Source: https://patents.google.com/patent/US9856588B2/en
Timestamp: 2018-10-16 00:54:19
Document Index: 423425043

Matched Legal Cases: ['application No. 201380017906', 'application No. 201410312160', 'application No. 201380006868', 'application No. 201380006868', 'Application No. 201380006868', 'Application No. 201410312160', 'application No. 10807285', 'application No. 10807287', 'Application No. 6058', 'Application No. 1839', 'Application No. 2014', 'application No. 2015', 'application No. 2013', 'Application No. 201410312160', 'Application No. 201380017906', 'Application No. 10732230', 'application No. 13741191', 'Application No. 201080004845', 'application No. 12739348', 'Application No. 13772707', 'Application No. 13741191']

US9856588B2 - Electrospinning of PTFE - Google Patents
Electrospinning of PTFE Download PDF
US9856588B2
US9856588B2 US14636274 US201514636274A US9856588B2 US 9856588 B2 US9856588 B2 US 9856588B2 US 14636274 US14636274 US 14636274 US 201514636274 A US201514636274 A US 201514636274A US 9856588 B2 US9856588 B2 US 9856588B2
US14636274
US20150183940A1 (en )
The process of electrostatic spinning is well known in the art as represented in U.S. Pat. Nos. 2,158,416; 4,043,331; 4,143,196; 4,287,139; 4,432,916; 4,689,186; 6,641,773 and 6,743; 273 each of which is incorporated herein by reference thereto. U.S. Pat. Nos. 4,323,525, 4,127,706 and 4,044,404, all of which are incorporated herein by reference, provide information related to processing and electrostatic spinning of PTFE from an aqueous or other dispersion.
Particularly preferred fiberization polymers include dextran, alginates, chitosan, guar gum compounds, starch, polyvinylpyridine compounds, cellulosic compounds, cellulose ether, hydrolyzed polyacrylamides, polyacrylates, polycarboxylates, polyvinyl alcohol, polyethylene oxide, polyethylene glycol, polyethylene imine, polyvinylpyrrolidone, polyacrylic acid, poly(methacrylic acid), poly(itaconic acid), poly(2-hydroxyethyl acrylate), poly(2-(dimethylamino)ethyl methacrylate-co-acrylamide), poly(N-isopropylacrylamide), poly(2-acrylamido-2-methyl-1-propanesulfonic acid), poly(methoxyethylene), poly(vinyl alcohol), poly(vinyl alcohol) 12% acetyl, poly(2,4-dimethyl-6-triazinylethylene), poly(3-morpholinylethylene), poly(N-1,2,4-triazolyethylene), poly(vinyl sulfoxide), poly(vinyl amine), poly(N-vinyl pyrrolidone-co-vinyl acetate), poly(g-glutamic acid), poly(N-propanoyliminoethylene), poly(4-amino-sulfo-aniline), poly[N-(p-sulphophenyl)amino-3-hydroxymethyl-1,4-phenyleneimino-1,4-phenylene)], isopropyl cellulose, hydroxyethyl, hydroxylpropyl cellulose, cellulose acetate, cellulose nitrate, alginic ammonium salts, i-carrageenan, N-[(3′-hydroxy-2,3′-dicarboxy)ethyl]chitosan, konjac glocomannan, pullulan, xanthan gum, poly(allyammonium chloride), poly(allyammonium phosphate), poly(diallydimethylammonium chloride), poly(benzyltrimethylammonium chloride), poly(dimethyldodecyl(2-acrylamidoethyly)ammonium bromide), poly(4-N-butylpyridiniumethylene iodine), poly(2-N-methylpridiniummethylene iodine), poly(N methylpryidinium-2,5-diylethenylene), polyethylene glycol polymers and copolymers, cellulose ethyl ether, cellulose ethyl hydroxyethyl ether, cellulose methyl hydroxyethyl ether, poly(1-glycerol methacrylate), poly(2-ethyl-2-oxazoline), poly(2-hydroxyethyl methacrylate/methacrylic acid) 90:10, poly(2-hydroxypropyl methacrylate), poly(2-methacryloxyethyltrimethylammonium bromide), poly(2-vinyl-1-methylpyridinium bromide), poly(2-vinylpyridine N-oxide), poly(2-vinylpyridine), poly(3-chloro-2-hydroxypropyl-2-methacryloxyethyldimethylammonium chloride), poly(2-vinylpyridine N-oxide), poly(2-vinylpyridine), poly(acrylamide/2-methacryloxyethyltrimethylammonium bromide) 80:20, poly(acrylamide/acrylic acid), poly(allylamine hydrochloride), poly(butadiene/maleic acid), poly(diallyldimethylammonium chloride), poly(ethyl acrylate/acrylic acid), poly(ethylene glycol)bis(2-aminoethyl), poly(ethylene glycol)monomethyl ether, poly(ethylene glycol)-bisphenol A diglycidyl ether adduct, poly(ethylene oxide-b-propylene oxide), poly(ethylene/acrylic acid) 92:8, poly(1-lysine hydrobromide), poly(1-lysine hydrobromide), poly(maleic acid), poly(n-butyl acrylate/2-methacryloxyethyltrimethylammonium bromide), poly(N-iso-propylacrylamide), poly(N-vinylpyrrolidone/2-dimethylaminoethyl methacrylate), dimethyl sulfatequaternary, poly(N-vinylpyrrolidone/vinyl acetate), poly(oxyethylene)sorbitan monolaurate (Tween 20®), poly(styrenesulfonic acid), poly(vinyl alcohol), N-methyl-4(4′-formylstyryl)pyridinium, methosulfate acetal, poly(vinyl methyl ether), poly(vinylamine)hydrochloride, poly(vinylphosphonic acid), poly(vinylsulfonic acid) sodium salt and polyaniline.
In one embodiment electrospinning dispersions are based upon Daikin D 210 PTFE and Sigma Aldrich polyethylene oxide with a molecular weight of 300,000. Daikin D 210 PIFE is representative of a material suitable for demonstrating the invention. Daikin D 210 PTFE has about 59-62 wt % solids, 6.0-7.2% wt % surfactant, a pH of 8.5 to 10.5, a specific gravity of 1.5 to 1.53 and a Brookfield viscosity maximum of 35 cP.
Representative results are provided in Tables 2-4 with standard deviations reported in parenthesis. In the Tables the air flow, pore diameter, and bubble point were measured using a Porous Materials, Inc. Capillary Flow Porometer Model CFP-1100-AEXL using test type “Dry Up/Wet Up”. Density was measured by a gas pycnometer using ISO 1183-3. Tensile, elongation, and modulus were measured using ASTM D882 with diecut ASTM D638 Type V dogbone sample geometry. Viscosities for different formulations of PEO/PTFE were done at the constant spindle speed setting listed for a #25 spindle at 25° C. taken in a Brookfield LV Viscometer.
A particular advantage offered by the present process is that the resulting material has significanly fewer broken fibrils upon sintering than a sample of the prior art. A decrease in fibril breakage increases manufacturing productivity due to a decrease in the material which is inferior. This is achieved without a loss of product characteristics.
Physical Properties of PTFE Membranes 60% PTFE,
0.048 gm/ml PEO/1000 ml PTFE dispersion.
BP: Pore 9.17 (0.787) 3.18 (0.157) 3.01 (0.123) 3.41 (0.235) 2.63 (0.088)
Air Flow 1.4217
Density(g/cm3) 2.0871 2.2334 2.2022 2.2255 2.1985
Tensile 190 (58.1) 339 (15) 348 (86.9) 1450 (290) 208 (19.9)
BP: Pore 4.14 3.95 5.09 4.05 6.7
Air Flow 1.4806 1.5747 1.9938 1.8346 3.0425
Tensile 371.37 626.76 321 109 114.47
Basis Weight 13.795 13.320 10.442
BP: Pore 7.14 9.15 5.7223
Bubble point: 0.92 0.76 1.09
Tensile 218.57 103.99 335
1. A method of preparing a spinning dispersion, comprising: adding a fiberizing polymer to a polytetrafluoroethylene (PTFE) aqueous dispersion to form a PTFE/Polymer dispersion, wherein the PTFE/Polymer dispersion comprises at least 1% by weight of the fiberizing polymer in relation to weight of the PTFE/Polymer dispersion to no more than 10% by weight of the fiberizing polymer in relation to weight of the PTFE/Polymer dispersion, and wherein the PTFE/Polymer dispersion has a viscosity of at least 50,000 cP.
2. The method of claim 1, wherein the PTFE/Polymer dispersion comprises 50-80 wt % PTFE solids.
3. The method of claim 2, wherein the PTFE/Polymer dispersion comprises 59-61 wt % PTFE solids.
4. The method of claim 1, wherein the PTFE/Polymer dispersion comprises a weight ratio of fiberizing polymer to PTFE/Polymer dispersion of at least 3.0 to no more than 5.5.
5. The method of claim 1, wherein the fiberizing polymer comprises polyethylene oxide (PEO), the PTFE/Polymer dispersion comprises a PTFE/PEO dispersion, and wherein the ratio of PEO to PTFE corresponds to a ratio in the range of 0.03 to 0.06 grams of PEO per ml of 60 wt % PTFE dispersion.
6. The method of claim 5, wherein the ratio of PEO to PTFE corresponds to a ratio of between 0.032 and 0.052 grams of PEO per ml of 60 wt % PTFE dispersion.
7. The method of claim 6, wherein the ratio of PEO to PTFE corresponds to a ratio of about 0.048 grams of PEO per ml of 60 wt % PTFE dispersion.
8. The method of claim 5, further comprising mixing the PTFE/PEO dispersion in a jar roller turning at a constant rate.
9. The method of claim 8, wherein mixing the PTFE/PEO dispersion comprises mixing in a jar roller turning at a constant rate for at least 24 hours.
10. The method of claim 5, further comprising filtering PTFE/PEO dispersion to remove clumps.
11. The method of claim 5, further comprising allowing the PTFE/PEO dispersion to homogenize.
12. The method of claim 1, wherein a molecular weight of the fiberizing polymer is 200,000 to 4,000,000 Mw.
13. The method of claim 1, wherein the spinning dispersion is spun to create one or more fibers, the one or more fibers having a diameter of about 0.8 microns.
14. The method of claim 1, wherein PTFE particles dispersed in the spinning dispersion have a particle size of no more than 0.8 microns.
15. The method of claim 1, wherein PTFE particles dispersed in the spinning dispersion have a particle size of at least 0.1 microns.
16. The method of claim 1, wherein PTFE particles dispersed in the spinning dispersion have a particle size in a range of 0.2 microns to 0.6 microns.
US14636274 2009-01-16 2015-03-03 Electrospinning of PTFE Active US9856588B2 (en)
US14636274 US9856588B2 (en) 2009-01-16 2015-03-03 Electrospinning of PTFE
US20150183940A1 true US20150183940A1 (en) 2015-07-02
US9856588B2 true US9856588B2 (en) 2018-01-02
US13446300 Abandoned US20130023175A1 (en) 2009-01-16 2012-04-13 Electrospinning of ptfe with high viscosity materials
US14331400 Abandoned US20150011139A1 (en) 2009-01-16 2014-07-15 Electrospinning of ptfe with high viscosity materials
US14856992 Abandoned US20160002430A1 (en) 2009-01-16 2015-09-17 Electrospinning of ptfe with high viscosity materials
US14858518 Abandoned US20160060797A1 (en) 2009-01-16 2015-09-18 Electrospinning of ptfe with high viscosity materials
JPS5160773A (en) 1974-09-26 1976-05-26 Ici Ltd
US20030008944A1 (en) 2001-03-13 2003-01-09 Jones Clay Woodward High build dispersions
US20030044585A1 (en) 1999-04-15 2003-03-06 Taylor Jack Draper Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20030044559A1 (en) * 2001-08-13 2003-03-06 3M Innovative Properties Company Articles for optical recording media and method for securing the same
WO2005095684A1 (en) 2004-03-25 2005-10-13 Massachusetts Institute Of Technology Production of submicron diameter fibers by two-fluid electrospinning process
US20070132130A1 (en) 2003-03-27 2007-06-14 Robert Roberts Methods for continuous processing polytetrafluoroethylene (PTFE) resin
WO2007145283A1 (en) 2006-06-15 2007-12-21 Japan Gore-Tex Inc. Stretch composite fabric and stretch porous polytetrafluoroethylene film
CN101350413A (en) 2008-07-22 2009-01-21 山东东岳神舟新材料有限公司 Fiber-reinforced multilayer fluorine-containing cross-linking ionic membrane and preparation method thereof
WO2009018463A2 (en) 2007-08-01 2009-02-05 Donaldson Company, Inc. Fluoropolymer fine fiber
US20090324950A1 (en) 2005-05-02 2009-12-31 Kim Hak-Yong Method of manufacturing a continuous filament by electrospinning and continuous filament manufactured thereby
EP2223725A1 (en) 2009-02-27 2010-09-01 BHA Group Holdings Inc. HEPA (H-10) Performance Synthetic Nonwoven And Nanofiber Composite Filter Media
KR20120116640A (en) 2011-04-13 2012-10-23 주식회사 엠아이텍 Double coated stent and manufacturing method using the same
JPS54151675A (en) 1978-04-19 1979-11-29 Ici Ltd Production of fibrous tube product
US20090227165A1 (en) 2006-06-15 2009-09-10 Takashi Imai Stretch Composite Fabric and Expanded Porous Polytetrafluoroethylene Film
CN103561682A (en) 2011-01-28 2014-02-05 梅瑞特医药体系股份有限公司 Electrospun PTFE coated stent and method of use
Advisory Action dated Dec. 3, 2014 in U.S. Appl. No. 13/957,931.
Advisory Action dated Nov. 18, 2014 in U.S. Appl. No. 13/564,927.
Amendment & Response to Office Action filed Aug. 29, 2016, in U.S. Appl. No. 13/446,300.
Amendment & Response to Office Action filed with the USPTO on Feb. 2, 2016, in U.S. Appl. No. 13/742,077.
Amendment & Response to Office Action filed with the USPTO on Feb. 9, 2016, in U.S. Appl. No. 14/044,050.
Amendment A amd Response to Office Action filed Sep. 19, 2017, in U.S. Appl. No. 15/069,989.
Amendment and Response to Office Action filed May 18, 2016 in U.S. Appl. No. 14/081,504.
Amendment and Response to Office Action filed Nov. 30, 2015 in U.S. Appl. No. 14/152,626.
Amendment B and Response to Office Action filed Jun. 13, 2016 for U.S. Appl. No. 14/331,400.
Amendment under 37 C.F.R. 1.312 dated Jul. 23, 2012 in U.S. Appl. No. 12/825,993.
Amendment under 37 C.F.R. 1.312 dated Jul. 23, 2012 in U.S. Appl. No. 12/852,989.
Applicant Initiated Interview Summary for U.S. Appl. No. 13/826,618 dated Mar. 20, 2017.
Applicant-Initiated Interview Summary dated Feb. 12, 2014 in U.S. Appl. No. 13/957,884.
Applicant-Initiated Interview Summary dated Jan. 24, 2014 in U.S. Appl. No. 13/957,884.
Applicant-Initiated Interview Summary dated Mar. 6, 2012 in U.S. Appl. No. 12/689,334.
Applicant-Initiated Interview Summary dated Nov. 13, 2014 in U.S. Appl. No. 13/564,927.
Applicant-Initiated Interview Summary dated Sep. 19, 2016, in U.S. Appl. No. 14/152,626.
Arguments in Support of Pre-Appeal Brief Request for Review, filed Nov. 8, 2016 for U.S. Appl. No. 14/044,050.
C.A. Sperati and H.W. Starkweather, Fortschr. Hochmpolym. Forsch, 1961, p. 465-495.
Certification and Request for Consideration Under the After Final Consideration Pilot Program and Amendment C and Response to Final Office Action, filed Oct. 31, 2016 for U.S. Appl. No. 14/331,400.
Chinese Office Action dated Apr. 25, 2016, in Chinese patent application No. 201380017906.8 (including translation).
Chinese Office Action dated Feb. 24, 2016, in Chinese patent application No. 201410312160X (including translation).
Chinese Office Action dated Jan. 22, 2017, in Chinese patent application No. 201380006868.6.
Chinese Office Action dated Jul. 21, 2015, from Chinese patent application No. 201380006868.6.
Chinese Office Action dated Sep. 22, 2017, in Chinese Patent Application No. 201380006868.6.
Chinese Response to Office Action filed Oct. 10, 2017, in Chinese Patent Application No. 201410312160X.
DuPont TM Teflon PTFE 601A, Product Information. Copyright 2005.
European Office Action dated Jul. 22, 2016, in European patent application No. 10807285.1.
European Office Action dated Jul. 22, 2016, in European patent application No. 10807287.7.
Examiner's Answer dated Jun. 5, 2017, from U.S. Appl. No. 14/044,050.
Final Office Action dated Feb. 22, 2016, in U.S. Appl. No. 13/742,077.
Final Office Action dated Feb. 26, 2015, from U.S. Appl. No. 14/152,590.
Final Office Action dated Jan. 22, 2016, in U.S. Appl. No. 14/152,626.
Final Office Action dated Jan. 23, 2017, issued in U.S. Appl. No. 14/081,715.
Final Office Action dated Jul. 26, 2017, from U.S. Appl. No. 13/827,790.
Final Office Action dated Jul. 29, 2016, in U.S. Appl. No. 14/331,400.
Final Office Action dated Jun. 1, 2017, from U.S. Appl. No. 14/852,656.
Final Office Action dated Jun. 16, 2016 for U.S. Appl. No. 14/175,016.
Final Office Action dated Jun. 27, 2017, from U.S. Appl. No. 13/360,444.
Final Office Action dated Jun. 8, 2016 for U.S. Appl. No. 14/044,050.
Final Office Action dated Oct. 15, 2015, from U.S. Appl. No. 13/827,790.
Final Office Action dated Oct. 16, 2017, from U.S. Appl. No. 13/749,823.
Final Office Action dated Oct. 20, 2017, from U.S. Appl. No. 13/826,618.
Final Office Action dated Oct. 21, 2015, from U.S. Appl. No. 14/331,422.
Final Office Action dated Sep. 23, 2016, issued in U.S. Appl. No. 14/152.590.
Final Office Action dated Sep. 27, 2016, issued in U.S. Appl. No. 13/827,790.
Final Office Action dated Sep. 28, 2017, from U.S. Appl. No. 14/207,344.
Final Office Action for U.S. Appl. No. 13/446,300, dated Dec. 2, 2016.
Final Office Action for U.S. Appl. No. 13/826,618, dated Nov. 18, 2016.
Final Rejection dated Dec. 29, 2014 in U.S. Appl. No. 13/625,548.
Final Rejection dated May 21, 2014 in U.S. Appl. No. 13/957,884.
Final Rejection dated May 21, 2015 in U.S. Appl. No. 13/446,300.
Final Rejection dated Sep. 12, 2014 in U.S. Appl. No. 13/957,931.
Final Rejection dated Sep. 3, 2014 in U.S. Appl. No. 13/564,927.
Indian Response to Office Action filed Oct. 17, 2017, in Indian Patent Application No. 6058/DELNP/2011.
Indian Response to Office Action filed Oct. 20, 2017, in Indian Patent Application No. 1839/KOLNP/2012.
International Preliminary Report on Patentability (Chapter 1 of the PCT) dated Jul. 30, 2013, from International Application No. PCT/US2012/023006.
International Preliminary Report on Patentability (Chapter 1 of the PCT) dated Sep. 15, 2015, from International Application No. PCT/US2014/023416.
Japanese Office Action dated Oct. 26, 2017, in Japanese Patent Application No. 2014-554841.
Japanese Office Action dated Sep. 16, 2016 (with translation), issued in Japanese patent application No. 2015-252820.
Japanese Office Action dated Sep. 30, 2014, from corresponding Japanese patent application No. 2013-126693, filed Jun. 17, 2013.
Jyoti Lochab and V R. Singh, Indian Journal of Pure & Applied Physics, vol. 42, Aug. 2004, p. 595-599.
Lee, K.H. et al. The Change of Bead Morphology Formed on Electrospun Polystyrene Fibers, Polymer 44 (2003), p. 4029-4034.
Menini, Richarad and Masoud Farzaneh, Production of Superhydrophobic Polymer Fibers With Embedded Particles Using the Electrospinning Technique, Polymer International 57:77-84, 2008.
Non Final Office Action in U.S. Appl. No. 13/826,618 dated Apr. 7, 2017.
Non Final Office Action in U.S. Appl. No. 14/204,466 dated Mar. 31, 2017.
Non Final Office Action in U.S. Appl. No. 14/207,344 dated Mar. 15, 2017.
Non Final Office Action in U.S. Appl. No. 14/631,909 dated Apr. 7, 2017.
Non Final Office Action in U.S. Appl. No. 15/069,989 dated Mar. 23, 2017.
Non-Final Office Action dated Apr. 21, 2015 in U.S. Appl. No. 14/331,422.
Non-Final Office Action dated Aug. 10, 2015, from U.S. Appl. No. 14/044,050.
Non-Final Office Action dated Aug. 26, 2016, in U.S. Appl. No. 14/858,619.
Non-Final Office Action dated Aug. 5, 2014 in U.S. Appl. No. 13/827,886.
Non-Final Office Action dated Dec. 18, 2015, in U.S. Appl. No. 14/081,504.
Non-Final Office Action dated Feb. 13, 2012 in U.S. Appl. No. 12/852,989.
Non-Final Office Action dated Feb. 16, 2012 in U.S. Appl. No. 12/689,334.
Non-Final Office Action dated Feb. 16, 2016, in U.S. Appl. No. 14/918,877.
Non-Final Office Action dated Feb. 16, 2017, from U.S. Appl. No. 14/520,368.
Non-Final Office Action dated Feb. 5, 2016, in U.S. Appl. No. 13/749,823.
Non-Final Office Action dated Feb. 7, 2017, issued in U.S. Appl. No. 13/827,790.
Non-Final Office Action dated Feb. 9, 2012 in U.S. Appl. No. 12/852,993.
Non-Final Office Action dated Jan. 12, 2016, in U.S. Appl. No. 14/152,590.
Non-Final Office Action dated Jan. 14, 2016, in U.S. Appl. No. 14/331,400.
Non-Final Office Action dated Jul. 12, 2017, from U.S. Appl. No. 14/331,400.
Non-Final Office Action dated Jul. 2, 2014 in U.S. Appl. No. 13/803,892.
Non-Final Office Action dated Jul. 29, 2015, from U.S. Appl. No. 14/152,626.
Non-Final Office Action dated Jul. 8, 2015 in U.S. Appl. No. 13/743,668.
Non-Final Office Action dated Jun. 10, 2016 for U.S. Appl. No. 13/749,823.
Non-Final Office Action dated Jun. 13, 2014 in U.S. Appl. No. 13/625,548.
Non-Final Office Action dated Jun. 19, 2017, from U.S. Appl. No. 14/081,504.
Non-Final Office Action dated Jun. 20, 2016 for U.S. Appl. No. 14/348,309.
Non-Final Office Action dated Jun. 23, 2017, from U.S. Appl. No. 13/749,823.
Non-Final Office Action dated Jun. 29, 2017, from U.S. Appl. No. 14/081,715.
Non-Final Office Action dated Jun. 30, 2016 for U.S. Appl. No. 14/081,715.
Non-Final Office Action dated Jun. 9, 2016 for U.S. Appl. No. 14/152,626.
Non-Final Office Action dated Mar. 13, 2015 in U.S. Appl. No. 14/331,375.
Non-Final Office Action dated Mar. 18, 2015 in U.S. Appl. No. 13/564,925.
Non-Final Office Action dated Mar. 21, 2014 in U.S. Appl. No. 13/564,927.
Non-Final Office Action dated Mar. 21, 2014 in U.S. Appl. No. 13/957,931.
Non-Final Office Action dated Mar. 23, 2011 in U.S. Appl. No. 12/689,334.
Non-Final Office Action dated Mar. 28, 2016, in U.S. Appl. No. 13/446,300.
Non-Final Office Action dated Mar. 28, 2016, in U.S. Appl. No. 13/827,790.
Non-Final Office Action dated Mar. 9, 2017. from U.S. Appl. No. 15/069,988.
Non-Final Office Action dated May 11, 2015 in U.S. Appl. No. 14/331,400.
Non-Final Office Action dated May 11, 2015, from corresponding U.S. Appl. No. 14/331,400.
Non-Final Office Action dated May 3, 2013 in U.S. Appl. No. 13/272,412.
Non-Final Office Action dated May 7, 2015 in U.S. Appl. No. 13/827,886.
Non-Final Office Action dated Nov. 1, 2017, from U.S. Appl. No. 13/446,300.
Non-Final Office Action dated Nov. 12, 2014 in U.S. Appl. No. 13/446,300.
Non-Final Office Action dated Nov. 2, 2012 in U.S. Appl. No. 13/272,412.
Non-Final Office Action dated Nov. 2, 2015, from U.S. Appl. No. 13/742,077.
Non-Final Office Action dated Nov. 20, 2015, in U.S. Appl. No. 13/826,618.
Non-Final Office Action dated Nov. 3, 2017, from U.S. Appl. No. 14/967,597.
Non-Final Office Action dated Nov. 30, 2015, in U.S. Appl. No. 14/175,016.
Non-Final Office Action dated Nov. 8, 2013 in U.S. Appl. No. 13/957,884.
Non-Final Office Action dated Oct. 26, 2016 for U.S. Appl. No. 13/742,077.
Non-Final Office Action dated Oct. 6, 2016, issued in U.S. Appl. No. 13/360,444.
Non-Final Office Action dated Oct. 6, 2016, issued in U.S. Appl. No. 13/742,025.
Non-Final Office Action dated Oct. 7, 2016, issued in U.S. Appl. No. 14/852,656.
Notice of Allowability dated Sep. 24, 2015, from U.S. Appl. No. 13/787,327.
Notice of Allowance dated Jan. 25, 2017, issued in U.S. Appl. No. 14/152,626.
Notice of Allowance dated Jul. 11, 2016, in U.S. Appl. No. 13/826,618.
Notice of Allowance dated Oct. 4, 2017, in U.S. Appl. No. 14/204,466.
Notice of Allowance dated Sep. 3, 2015, from U.S. Appl. No. 13/787,327.
Notification Concerning Transmittal of International Preliminary Report on Patentability (Chapter 1 of the PCT) dated Sep. 24, 2015, from International Application No. PCT/US2014/024868.
Notification of Transmittal of the International Search Report & The Written Opinion of The Internaional Searching Authority, or the Declaration dated Dec. 3, 2013, from International Application No. PCT/US2013/060172.
Notification of Transmittal of the International Search Report & The Written Opinion of the International Searching Authority, or the Declatation dated Oct. 7, 2010, from PCT Application No. PCT/US10/0044874.
Notification of Transmittal of the International Search Report & The Written Opinion of the International Searching Authority, or the Declatation dated Oct. 7, 2010, from PCT Application No. PCT/US10/0044879.
Office Action dated Feb. 24, 2016 in co-pending CN Application No. 201410312160X.
Office Action dated Jul. 2, 2014 from U.S. Appl. No. 14/044,050, filed Oct. 2, 2013.
Office Action dated Jul. 20, 2015 in Chinese Patent Application No. 201380017906.8.
Office Action dated Sep. 24, 2015, from EP Patent Application No. 10732230.7.
Office Action for EP application No. 13741191.4, dated Dec. 2, 2016.
Office Action from corresponding Chinese Patent Application No. 201080004845.8, dated Nov. 5, 2012 (Good Faith Translation).
PCT International Search Report from PCT/US10/021246, dated Aug. 16, 2010.
Preliminary Amendment filed Jul. 28, 2016, in U.S. Appl. No. 15/069,989.
RCE & Response to Office Action filed on Aug. 4, 2015, from U.S. Appl. No. 13/360,444.
RCE and Amendment and Response to Final Office Action filed May 23, 2016 in U.S. Appl. No. 13/742,077.
RCE and Amendment and Response to Final Office Action filed May 23, 2016 in U.S. Appl. No. 14/152,626.
RCE and Amendment B and Response to Final Office Action filed Nov. 20, 2015 in U.S. Appl. No. 13/446,300.
RCE and Response to Final Office Action for U.S. Appl. No. 14/081,504, dated Dec. 9, 2016.
RCE and Response to Final Office Action for U.S. Appl. No. 14/152,590, dated Dec. 21, 2016.
RCE and Response to Office Action filed Aug. 14, 2017, in U.S. Appl. No. 13/742,025.
RCE and Response to Office Action filed Oct. 25, 2017, in U.S. Appl. No. 13/742,077.
RCE and Response to Office Action filed Oct. 26, 2017, in U.S. Appl. No. 13/360,444.
Reply Brief filed Aug. 7, 2017, in U.S. Appl. No. 14/044,050.
Response dated Apr. 26, 2012 to Non-Final Office Action in U.S. Appl. No. 12/852,989.
Response dated Aug. 5, 2013 to Non-Final Office Action in U.S. Appl. No. 13/272,412.
Response dated Dec. 17, 2014 to Final Rejection and Second Advisory Action in U.S. Appl. No. 13/564,927.
Response dated Dec. 2, 2014 to Non-Final Office Action in U.S. Appl. No. 13/827,886.
Response dated Feb. 1, 2013 to Non-Final Office Action in U.S. Appl. No. 13/272,412.
Response dated Feb. 17, 2015 to Non-Final Office Action in U.S. Appl. No. 13/446,300.
Response dated Feb. 28, 2012 to Non-Final Office Action in U.S. Appl. No. 12/689,334.
Response dated Feb. 4, 2014 to Non-Final Office Action in U.S. Appl. No. 13/957,884.
Response dated Jul. 20, 2015 to Non-Final Office Action in U.S. Appl. No. 14/331,422.
Response dated Jul. 21, 2015 to Final Rejection in U.S. Appl. No. 13/446,300.
Response dated Jun. 19, 2014 to Non-Final Office Action in U.S. Appl. No. 13/564,927.
Response dated Jun. 19, 2014 to Non-Final Office Action in U.S. Appl. No. 13/957,931.
Response dated Mar. 3, 2014 to Applicant-Initiated Interview Summary in U.S. Appl. No. 13/957,884.
Response dated May 3, 2012 to Non-Final Office Action in U.S. Appl. No. 12/852,993.
Response dated May 9, 2011 to Non-Final Office Action in U.S. Appl. No. 12/689,334.
Response dated Nov. 12, 2014 to Final Rejection in U.S. Appl. No. 13/957,931 Along with Request for Consideration Under the After Final Pilot Program.
Response dated Nov. 25, 2014 to Final Rejection and Advisory Action and Pilot Program Request in U.S. Appl. No. 13/564,927.
Response dated Nov. 4, 2014 to Final Rejection in U.S. Appl. No. 13/564,927.
Response dated Sep. 15, 2014 to Non-Final Office Action in U.S. Appl. No. 13/625,548.
Response resubmission dated Nov. 4, 2014 with Pilot Program Request in U.S. Appl. No. 13/564,927.
Response to Non Final Office Action for U.S. Appl. No. 14/152,626, dated Dec. 7, 2016.
Response to Non Final Office Action for U.S. Appl. No. 14/207,344, dated Dec. 9, 2016.
Response to Non Final Office Action in U.S. Appl. No. 13/742,077 dated Mar. 27, 2017.
Response to Non-Final Office Action filed Jun. 28, 2016 for U.S. Appl. No. 13/827,790.
Response to Non-Final Office Action, filed Oct. 31, 2016, for U.S. Appl. No. 14/081,715.
Response to Office Action filed Apr. 11, 2016, in U.S. Appl. No. 14/152,590.
Response to Office Action filed Feb. 6, 2017, in U.S. Appl. No. 13/360,444.
Response to Office Action filed Feb. 6, 2017, in U.S. Appl. No. 13/742,025.
Response to Office Action filed Feb. 7, 2017, in U.S. Appl. No. 14/852,656.
Response to Office Action filed Jul. 7, 2017, in U.S. Appl. No. 13/826,618.
Response to Office Action filed Jun. 15, 2017, in U.S. Appl. No. 14/207,344.
Response to Office Action filed Jun. 7, 2017, from U.S. Appl. No. 13/827,790.
Response to Office Action filed Mar. 21, 2016, in U.S. Appl. No. 13/826,618.
Response to Office Action filed May 4, 2016, in U.S. Appl. No. 13/749,823.
Response to Office Action filed Oct. 4, 2017, in U.S. Appl. No. 13/749,823.
Response to Office Action filed Sep. 19, 2017, in U.S. Appl. No. 14/081,504.
Response to Office Action filed Sep. 29, 2017, in U.S. Appl. No. 14/081,715.
Response to Restriction Office Action filed Jul. 28, 2016, in U.S. Appl. No. 14/852,656.
S.V. Gandal and Brothers, Encyclopedia of Polymer Science and Technology, 2010, section Perfluorinated Polymers, Polytetrafluoroethylene.
Second Advisory Action dated Dec. 12, 2014 with Interview Summary in U.S. Appl. No. 13/564,927.
Statement of Substance of Telephone Interview dated Mar. 12, 2012 in U.S. Appl. No. 12/689,334.
Supplemental Amendment filed Jun. 20, 2016, for U.S. Appl. No. 13/826,618.
Supplemental Amendment filed Jun. 28, 2016 for U.S. Appl. No. 13/742,077.
Supplementary European Search Report & Opinion dated Jun. 25. 2015, from European patent application No. 12739348.6.
Supplementary European Search Report dated Oct. 20, 2015, from EP Patent Application No. 13772707.9.
Supplementary European Search Report dated Oct. 22, 2015, from EP Patent Application No. 13741191.4.
Written Opinion of the International Searching Authority, PCT/US2010/021426, dated Aug. 12, 2010, Won Jae Lee.
Xiong, Joe, Fabrication of Ultrafine Fibrous Polytetrafluoroethylene Porous Membranes by Electrospinning Journal of Materials Research, 24(9), 2755-2761.
US20150011139A1 (en) 2015-01-08 application
Wang et al. 2006 Electrospinning of polyacrylonitrile nanofibers
Duan et al. 2007 Hybrid nanofibrous membranes of PLGA/chitosan fabricated via an electrospinning array
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