Source: http://www.google.com/patents/US7833457?dq=6,163,776
Timestamp: 2018-01-19 21:42:30
Document Index: 596286556

Matched Legal Cases: ['Application No. 200510108461', 'Application No. 2003', 'Application No. 2005', 'Application No. 2005', 'Application No. 2003', 'Application No. 10', 'Application No. 10']

Patent US7833457 - Method for producing birefringent film, optical film and image display ... - Google Patents
A birefringent film with excellent uniformity in in-plane retardation, retardation in the thickness direction, and alignment axis is provided. The birefringent film is produced in such a manner that, in the step of stretching a polymer film, the polymer film is stretched in a width direction while being...http://www.google.com/patents/US7833457?utm_source=gb-gplus-sharePatent US7833457 - Method for producing birefringent film, optical film and image display device using the same
Publication number US7833457 B2
Application number US 10/554,224
PCT number PCT/JP2004/014479
Also published as CN1791817A, CN100419474C, US20060275559, WO2005059609A1
Publication number 10554224, 554224, PCT/2004/14479, PCT/JP/2004/014479, PCT/JP/2004/14479, PCT/JP/4/014479, PCT/JP/4/14479, PCT/JP2004/014479, PCT/JP2004/14479, PCT/JP2004014479, PCT/JP200414479, PCT/JP4/014479, PCT/JP4/14479, PCT/JP4014479, PCT/JP414479, US 7833457 B2, US 7833457B2, US-B2-7833457, US7833457 B2, US7833457B2
Inventors Kuniaki Ishibashi, Kazuki Tsuchimoto, Hiroyuki Yoshimi
Patent Citations (55), Non-Patent Citations (12), Referenced by (3), Classifications (14), Legal Events (2)
US 7833457 B2
Non-patent Document 1: T. Yamada et al. Intn. Polym. Process., Vo. X, Issue 4, 334-340 (1995)
Patent Document 1: JP 6(1994)-51116 A
Patent Document 2: JP 3(1991)-23405 A
Patent Document 3: JP 2(1990)-191904 A
Patent Document 4: JP 5(1993)-249316 A
in longitudinal in width in thickness
Prior art Stretching 1 STD 1/STD
Prior art Stretching SMD STD = (1/SMD)1/2
in (1/SMD)1/2
Present Stretching + (1/STD)1/2 ≦ STD (1/SMD)1/2
invention Shrinking SMD
alignment Variation Variation
axis angle in Δnd in Rth
(°) Δnd (nm) (%) Rth (nm) (%) Appearance
Ex. 1 3.6 218.6 ±10.5 284.8 ±12.1 No
Comp. Ex. 1 20.6 173.7 ±18.2 394.1 ±22.5 No
Comp. Ex. 2 8.1 235.1 ±15.3 301.4 ±17.2 wrinkles were
Ex. 2 2.3 49.7 ±3.2 250.7 ±3.0 No
Comp. Ex. 3 11.3 50.9 ±10.4 309.2 ±25.5 No
Comp. Ex. 4 4.3 63.0 ±10.1 261.4 ±8.5 wrinkles were
US3229175 Jun 10, 1963 Jan 11, 1966 Strandberg Eng Lab Inc Stretch-shrink indicating and tension motor control apparatus
US5241030 Jun 8, 1990 Aug 31, 1993 The Dow Chemical Company Bioriented film
US5402556 Dec 7, 1993 Apr 4, 1995 Lindauer Dornier Gmbh Tentering frame with a tentering chain for treating film webs simultaneously in two axial directions
US7075604 Mar 28, 2003 Jul 11, 2006 Nitto Denko Corporation Optical film and display system
US7455801 Sep 16, 2003 Nov 25, 2008 Fujifilm Corporation Method of producing film
US20020008840 * Jun 15, 2001 Jan 24, 2002 Satoshi Sakamaki Method for stretching polymer film, polarizing film and method for producing the same, polarizer, birefringencial film and liquid crystal display device
US20030020208 May 23, 2002 Jan 30, 2003 Koji Tasaka Cellulose ester film, its manufacturing method, optical retardation film, optical compensation sheet, elliptic polarizing plate, and image display
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US20040052937 Sep 12, 2003 Mar 18, 2004 Fuji Photo Film Co., Ltd. Sheet polarizer, optical film, liquid crystal display, and method of producing sheet polarizers
US20040058093 * Sep 16, 2003 Mar 25, 2004 Hiroshi Nakashima Method of producing film
US20040119178 * Dec 4, 2003 Jun 24, 2004 Nitto Denko Corporation Method for producing polarizing plate, polarizing plate and image display device using the same
US20040241344 Aug 29, 2002 Dec 2, 2004 Hiroyuki Kawanishi Method for producing optical compensating film, optical compensating film circularly polarizing plate, and liquid crystal display
US20050018328 Jun 9, 2004 Jan 27, 2005 Masahiro Hata Optical film, polarizing optical film, and image viewing display
US20050213012 Mar 21, 2005 Sep 29, 2005 Nitto Denko Corporation IPS mode liquid crystal display
US20060077326 Oct 6, 2005 Apr 13, 2006 Nitto Denko Corporation Retardation-film integrated polarizing plate and method of manufacturing the same
US20060262401 * Mar 19, 2004 Nov 23, 2006 Nitto Denko Corporation Optical element, polarizing element, lighting device, and liquid crystal display
US20060275559 Oct 1, 2004 Dec 7, 2006 Nitto Denko Corporation Method for producing birefringent film, optical film and image display device using the same
JP2002090530A Title not available
JP2002296422A Title not available
JP2003315554A Title not available
JP2004144942A Title not available
JPH0323405A Title not available
JPH02191904A Title not available
JPH05249316A Title not available
KR910000870B1 Title not available
KR20030022791A Title not available
WO2002092671A1 May 8, 2002 Nov 21, 2002 Toray Industries, Inc. Biaxially oriented polypropylene film
1 Chinese Office Action dated Jul. 6, 2007 issued in Application No. 200510108461.1.
2 English language machine translation of JP-04-305602. Oct. 28, 1992. Umemoto et al.
3 English language machine translation of JP-2000-131693. May 12, 2000. Omuro et al.
4 English language machine translation of JP-2005-181450. Jul. 7, 2005. Ishibashi et al.
5 Japanese Office Action dated Aug. 17, 2010, issued in corresponding Japanese Patent Application No. 2003-418558.
6 Japanese Office Action dated Feb. 19, 2010, issued in corresponding Japanese Patent Application No. 2005-034644 ( With Translation).
7 Japanese Office Action dated Feb. 19, 2010, issued in Japanese Patent Application No. 2005-034645 (With Translation).
8 Japanese Office Action dated Oct. 14, 2008 (mailing date), issued in corresponding Japanese Patent Application No. 2003-418558.
9 JPO Website English language Machine Translation of JP2002-269781, Nakajima Hiroshi, Apr. 8, 2004.
10 Korean Office Action dated Oct. 31, 2006, issued in Korean Patent Application No. 10-2005-7019368.
11 Office Action of Corresponding Korean Patent Application No. 10-2005-7019368 mailed Oct. 31, 2006.
12 T. Yamada et al.; "Analyses of Bowing Phenomena in Successive Transverse Stretching and Thermosetting Process for Biaxially Oriented Film", Intern. Polymer Processing, vol. X, 1995, pp. 334-340. Cited in spec.
U.S. Classification 264/290.2, 264/134, 264/291
International Classification G02F1/1335, B29L11/00, G02B5/30, B29C55/00, B29C55/02, G02F1/13363
Cooperative Classification G02B5/3033, G02B5/3083, Y10T428/1041
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ISHIBASHI, KUNIAKI;TSUCHIMOTO, KAZUKI;YOSHIMI, HIROYUKI;REEL/FRAME:017887/0602