baber/WOPTO huggingface dataset:
Patent CA-2054404-C (CA)
Title: Vertical cavity surface emitting lasers with transparent electrodes
Inventor: KOPF ROSE F
IPC: H01S5/042
Filed: 1991-10-29
Granted: 1994-03-08
Abstract: VERTICAL CAVITY SURFACE EMITTING LASERS       WITH TRANSPARENT ELECTRODES Abstract Optically transparent and electrically conductive cadmium tin oxide or indium tin oxide is employed in vertical cavity surface emitting lasers for vertical current injection. Continuous wave lasing at room temperature is achieved in GaAs/AlGaAsquantum well lasers. Devices with a 10µm optical window which also serves as a vertical current injection inlet give lasing threshold currents as low as 3.8mA. The differential series resistance is (350-450).OMEGA. with a diode voltage of (5.1-5.6)V at the lasing threshold. Far field pattern of the laser emission is Gaussian-like with a full width at half maximum of 7°.
Patent CA-2055972-C (CA)
Title: Amine modified hydrogenation of nitrile rubber
Inventor: REMPEL GARRY LLEWELLYN
IPC: C08F8/04
Filed: 1991-11-21
Granted: 2002-06-11
Abstract: An improved process is provided for the hydrogenation of nitrile rubber wherein the molecular weight increase during the hydrogenation process is minimized and controlled, the improvement being that the hydrogenation is undertaken in the presence in the solution of an NH2-containing compound selected from ammonia and a C1 to C20 primary amine.
Patent CA-2059733-C (CA)
Inventor: OGAWA KAZUFUMI
IPC: C08J7/056
Filed: 1992-01-21
Granted: 1999-10-05
Abstract: A water- and oil-repelling adsorbing film formed on a material having active hydrogen such as hydroxyl group, imino group and amino group at the surface. This film is a chemically adsorbed film having surface irregularities exceeding 10 nanometers. It is directly or indirectly covalently bonded to the material surface and includes a monomolecular film or a polymer film with the molecules thereof containing a fluorocarbon group and a -Si- bond. The surface irregularities which exceed the molecular level are at least either those formed on the material surface itself, those due to particles formed on the substrate surface or those due to particles present in the chemically adsorbed film.
Patent CA-2059965-C (CA)
Title: Check valve with quick lock attachment feature
Inventor: GILBERT MAJOR H
IPC: F16K27/02
Filed: 1992-01-23
Granted: 1997-10-07
Abstract: A check valve includes first and second valve body parts.  The first, or lower, valve body part defines a protruding neck and the second, or upper, valve body part defines a receiving flange sized to received the protruding neck in a telescoping manner.   A snap fit retaining mechanism includes a set of hooks on the second valve body part and a hook receiving groove on the first valve body part.   The hooks are shaped to engage the groove to hold the first and second valve body parts together as an assembly, with the neck received in the flange.  A central passageway extends through the first and second valve body parts, and a valve seat is defined around the central passageway.  A valve pin is mounted in the central passageway to releasably seal against the valve seat.
Patent CA-2061958-C (CA)
Title: Wellhead housing seal assembly for damaged sealing surfaces
Inventor: SWEENEY THOMAS F
IPC: F16L23/20
Filed: 1992-02-27
Granted: 1994-05-17
Abstract: A  seal  assembly  for  a  wellhead   housing  and wellhead  connector  will  seal  even  if  the  primary sealing  surface  becomes  damaged. The  wellhead connector and the wellhead housing each have primary sealing surfaces.   A seal ring with upper and lower conical surfaces will seal against the surfaces of the wellhead  connector  and  the  wellhead  housing.    The wellhead housing also has a secondary sealing surface that extends down from the primary sealing surface.  In the event  that the primary sealing surface becomes damaged, a seal is utilized that has a support section and a lower seal surface.  The support section does not sealingly contact the damaged primary seal surface on the wellhead housing.   The lower seal surface engages the secondary seal surface of the wellhead housing to perform sealing.
Patent CA-2062461-C (CA)
Title: Hydroprimer for metallising substrate surfaces
Inventor: WOLF GERHARD-DIETER
IPC: C23C18/28
Filed: 1992-03-06
Granted: 1999-09-14
Abstract: Formulations which contain a water-dispersible polymer, a metallisation catalyst, if appropriate fillers, if appropriate other constituents and water are outstandingly suitable for the pretreatment of various substrate surfaces for the purpose of subsequent metallisation in a currentless metallisation bath.
Patent CA-2063353-C (CA)
Title: Fluorine-containing cation exchange membrane for electrolysis
Inventor: SHIMOHIRA TETSUJI
IPC: C25B13/08
Filed: 1992-03-18
Granted: 2001-09-04
Abstract: A fluorine-containing ration exchange membrane for electrolysis, which comprises a first layer of a fluorine-containing polymer having ration exchange groups and reinforced with a porous base material and a second layer of a fluorine-containing polymer having carboxylic acid groups, present on the cathode side of the first layer, wherein at least 1/2 of the thickness of the porous base material protrudes from the first layer towards the anode side, the protrusions of the porous base material are covered with a coating layer of a fluorine-containing polymer having ration exchange groups so that the coating layer is integrated with the first layer, and the anode side surface of the coating layer has a roughness corresponding to the surface contour of the porous base material.
Patent CA-2065154-C (CA)
Title: Pressure-sensitive copying material
Inventor: TAKAHASHI NAOYA
IPC: B41M5/165
Filed: 1991-07-10
Granted: 2000-12-12
Abstract: An excellent pressure-sensitive copying material which has an excellent color developing rate, little odor, and neither offset nor bleeding, said copying material comprising an electron-accepting developer and a solution of an electron-donating color former which produces colors upon contacting with said color developer, wherein it is characterized in that the solvent of said solution comprises a mixture of 20 to 80 weight % of sec-butyldiphenylmethane, 5 to 50 weight % of sec-butyldiphenylethane (1,1) and 5 to 50 weight % of sec-butyldiphenylethane (1,2).
Patent CA-2065547-C (CA)
Title: Continuous process for mass transfer of a liquid reagent with two different gases
Inventor: HARDISON LESLIE C
IPC: B01D53/52
Filed: 1992-04-07
Granted: 1999-04-27
Abstract: A method and apparatus for removing H2S from a process gas, including a residence chamber between an absorption chamber and an oxidizer chamber, in the polyvalent metal redox catalyzed removal of H2S from a process gas. The process and apparatus of the present invention inclues a first gas-liquid mass transfer zone or absorber chamber for intimately contacting an H2S-containing process gas with an oxidized polyvalent metal redox solution for absorption of the H2S; and a residence chamber in fluid communication with polyvalent metal redox solution exiting the absorption chamber through a valve-controlled cross-flow conduit.  Cross flow of solution from the absorber chamber through a valve or other circulation control device to the residence chamber provides controlled, continuous and sequential gas-liquid contact with two or more different gases in separate absorption, reaction and oxygenation zones within a single or multiple vessels,
Patent CA-2072354-C (CA)
Title: Process and device for drawing off and blocking off a melt, especially of plastic material
Inventor: KEILERT JUERGEN
IPC: B29C48/05
Filed: 1990-12-19
Granted: 1996-11-12
Abstract: Process and device for drawing off and blocking off a melt, especially of plastic material, with a heatable melter (1) fitted with a blocking valve (3) acting as a melt distributor from which the melt flows into a nozzle plate (10) which divides the melt by means of nozzles (14) into a plurality of threads, whereby the temperature of the melter and nozzle plate is regulated separately and the blocking valve is closed to block the melt off and the nozzle plate is tightly closed off by a cover (18).  To draw off the melt with the blocking valve open, the temperature of the melter and the nozzle plate is kept substantially at the same level and to block off the melt with the blocking valve closed the nozzle plate is taken to a temperature just above the solidification temperature of the melt material.  With the closure of the blocking valve the cover, which is cooled to a temperature considerably below the solidification temperature, is laid on the nozzle plate into which residual melt flows and seals off the nozzle apertures in the solidified state.
Patent CA-2074215-C (CA)
Title: Improved oral dosing formulations of dideoxy purine nucleosides
Inventor: ULLAH ISMAT
IPC: A61K33/42
Filed: 1992-07-20
Granted: 2001-12-18
Abstract: Improved oral dosage formulations for acid-labile dideoxy purine nucleoside derivatives such as ddA, ddI, and ddG, have been developed by incorporating selected water-insoluble buffering systems in the formulation. These novel formulations provide reduced mass dosage units in the form of convenient, palatable chewable/ dispersible tablets or a dry powder sachet.      The reduced mass requirement, necessary to allow tablets of reasonable size, was achieved in part by an unexpected 20 to 25% increase in drug bioavailability resulting from use of the selected buffering systems comprised of an insoluble magnesium antacid agent and either dihydroxyaluminum sodium carbonate or calcium carbonate.
Patent CA-2075903-C (CA)
Title: Soluble cross-linkable copolymers based on vinyl ester, vinyl aromat and acrylate monomers, process for their production and their use in coatings
Inventor: HOFFMANN PETER
IPC: C09D133/04
Filed: 1990-12-07
Granted: 1997-09-02
Abstract: The invention relates to copolymers containing on average 1.25 to 30 functional groups per molecule and a number average molecular weight of 1500 to 6000, which copolymers can be prepared by free-radical solution polymerization at 130 to 200.degree.C from 5 to 25% by weight of vinyl ester, 10 to 50% by weight of vinyl aromatic, 10 to 40% by weight of functional, monomers and, if desired further monomers, in which the vinyl ester is initially introduced and the remaining monomers are metered in for all monomers over a monomers addition period which is of the same length in the following manner: The amount of acrylate monomers added per unit of time remains constant. The amount of vinyl aromatic added over the first third of the monomer addition period is 15 to 30% by weight, the amount added over the second third is 25 to 40% by weight, and the amount added over the last third is 35 to 60% by weight, each relative to the total amount of vinyl aromatic. The copolymer obtained is, if desired, reacted with compounds containing a group which is reactive towards the functional groups of the copolymer and at least one crosslinkable group.
Patent CA-2076844-C (CA)
Title: 1:n ring-type signal protection apparatus
Inventor: STALICK VICTOR J
IPC: H04J3/14
Filed: 1992-08-25
Granted: 1999-03-16
Abstract: A system is illustrated that uses a spare or auxiliary add-drop muldem located at each end of N high capacity transport circuits to form a ring-type protection circuit using one additional high capacity transport. This is accomplished by using error detection circuitry to switch all of the auxiliary muldems to be normally in a high speed input/output circuit LOOPed condition but switching the auxiliary muldems on either end of a "bad" circuit to a THRU or open condition upon detection of a problem and allowing signals to be routed through the protection transport mechanism rather than the normal transport mechanism.
Patent CA-2077898-C (CA)
Title: Half wave resonator dielectric filter construction having self-shielding top and bottom surfaces
Inventor: AGAHI-KESHEH DARIOUSH
IPC: H01P11/00
Filed: 1992-03-24
Granted: 1996-10-15
Abstract: A dielectric block filter construction having resonating cavities formed therein to form one half wave-wavelength resonators thereby. The resonating cavities span opposing side surfaces of the dielectric block forming the dielectric block filter to define openings at the opposing side surfaces. Outer surfaces of the dielectric block, including the opposing side surfaces having the openings defined thereat, are coated with an electrically-conductive material except for portions of one side surface of the dielectric block about peripheral surfaces of input and output couplers formed on the one surface. Because the opposing outer surfaces are coated with the electrically-conductive material, the opposing outer surfaces of the dielectric block are self-shielding to prevent propagation of electromagnetic radiation through openings defined by the resonating cavities of the dielectric block.
Patent CA-2080010-C (CA)
Title: Pneumatic member and related attachment elements for cushions, seats, foundations and the like
Inventor: WAGNER ROBERT F
IPC: A47C27/07
Filed: 1992-02-05
Granted: 1997-01-07
Abstract: A pneumatic and load-supporting spring device (20) for use in bedding, cushions and the like. The disclosed embodiments have tubular telescoping members (16 and 18) that are biased apart by either an elastomer (26) located in the overlapping region, or a helical spring (46) located within the pneumatic cylinder formed by the tubes. A conical or dish-shaped head element (70) with clips (76) for securely engaging a typical wire grid (32 and 34) found in many bedding products is also disclosed, as well as a dish-shaped head element (70) using cooperating lobe (122) and trough (124) pairs to hold a grid wire (158) therebetween to fix a spring device (20) in place. A foot element (82) is also disclosed for use in attaching a spring device (20) on the base frame of a typical bedding product. The foot element (82) can straddle and snap into a metal frame rail (86), or be stapled to a frame rail.
Patent CA-2083340-C (CA)
Title: Efficient conductor routing for inkjet printhead
Inventor: MCCLELLAND PAUL H
IPC: B41J2/14
Filed: 1992-11-19
Granted: 2001-03-20
Abstract: A novel, nozzle member for an inkjet print cartridge and method of forming the nozzle member are disclosed. In this method, the nozzles or orifices are formed in a flexible polymer tape by Excimer laser ablation. In one embodiment, a substrate containing heating elements is mounted on the back of the nozzle member. Conductors for providing electrical signals to the substrate are located inside the flexible polymer tape and end at a via overlying an associated electrode on the substrate. The via electrically connects the conductors to the associated electrode.
Patent CA-2091515-C (CA)
Inventor: RICHART DOUGLAS S
IPC: C09D201/06
Filed: 1993-03-11
Granted: 1997-01-28
Abstract: The use of an amine salt of trifluoromethanesulfonic acid as a catalyst for the curing of hydroxyl-functional polymers provides a wrinkle finish.  The hydroxy-function may be present in polyesters, epoxies, and acrylate or methacrylate polymers, among others.  The polyesters which are able to provide such a finish have a hot plate melt flow of at least about 50 mm but if it is more than 150 mm, the gel time of the polymer must not be more than about 280 seconds. The minimum gel time in the case of polyesters is about 30 seconds.
Patent CA-2092557-C (CA)
Title: Detergent compositions containing polyhydroxy fatty acid amide and alkyl benzene sulfonate
Inventor: COOK THOMAS E
IPC: C11D1/22
Filed: 1991-09-25
Granted: 1998-08-18
Abstract: Detergent compositions are disclosed containing alkyl benzene sulfonate and certain polyhydroxy fatty acid amide surfactants in combination with suds suppressors or an auxiliary surfactant component, and combinations thereof. Also disclosed is a method for washing substrates using alkyl benzene sulfonate and certain polyhydroxy fatty acid amide surfactants.
Patent CA-2093399-C (CA)
Title: Transmission for adjustable sashes in door or window frames
Inventor: TONSMANN ARMIN
IPC: E05C9/02
Filed: 1993-04-05
Granted: 2004-06-29
Abstract: One stile of the sash in a door or window frame has an elongated channel for an elongated trough-shaped gear case rotatably receiving a first gear in mesh with the toothed rack of a reciprocable carrier in the gear case. A bifurcated end portion of the carrier mounts a second gear which meshes with a fixed rack of the gear case and with an elongated rack which is slidable along and overlies an open side of the gear case. The first gear can be rotated by a handle to move the carrier whereby the second gear rolls along the fixed rack and causes the elongated rack to perform a movement greater than the carrier. The elongated rack is coupled to motion receiving bars in the channel of the stile.
Patent CA-2098616-C (CA)
Title: Coatings comprising an organosilane solution polymer and a crosslink functional dispersed polymer
Inventor: HAZAN ISIDOR
IPC: C09D151/00
Filed: 1991-12-16
Granted: 2002-01-29
Abstract: A coating composition containing a film-forming organosilane polymer and a sterically dispersed macromolecular polym-er having macromonomer chains which react with the silane functionality of the organosilane polymer. The coating composition can be used as the clear coat over a conventional pigmented basecoat, or as a basecoat or monocoat or primer when a suitable amount of pigment is incorporated therein. The coating composition provides improved chemical resistance and is not prone to cracking.
Patent CA-2098991-C (CA)
Title: Plastic-coated concrete form panel
Inventor: HAUSER EDWARD R
IPC: C08G18/10
Filed: 1992-01-23
Granted: 2001-03-13
Abstract: Plastic-coated substrate, such as sheet of plywood useful as concrete form panel, having a topcoat of moisture-cured isocyanate-terminated urethane prepolymer with the surface of the topcoat having high degrees of specular gloss and smoothness.
Patent CA-2109633-C (CA)
Title: Isdn interfacing of local area networks
Inventor: GAGLIARDI UGO O
IPC: H04Q11/04
Filed: 1991-05-24
Granted: 2002-10-15
Abstract: An ISDN gateway (102) for local area networks comprises at least one circuit board resident at each ne-twork for carrying out protocol conversion and other network interface functions (116). Two embodiments of the gateway (102) provide bridger and router gateway services, respectively. To improve bandwidth utilization of the ISDN line while transferring voice or data, a B-channel allocation algorithm executed by the gateway (102) and the ISDN line dynamically allocates band-width by monitoring traffic at each destination queue and responsively allocating or deallocating virtual B-channels. Bandwidth utilization is optimized by pack-aging data packets into trains that are transmitted to the destination when the train is completed and upon satis-faction of other conditions. Each train undergoes data compression by execution of a suitable compression at-gorithm.
Patent CA-2110342-C (CA)
Inventor: WOOD CHARLES FRANCIS
IPC: E04G17/065
Filed: 1993-11-30
Granted: 1998-02-10
Abstract: The present invention relates to concrete forming structures and in particular to concrete wall forming structures and further to strongback members used to support, at a rear edge of a wall form, the concrete wall forming structure.  The strongback provides horizontal support to exterior upright structural members and the strongbacks include cooperating tie plates associates with tie bars which typically pass through the concrete material.  Preferably, the strongback is an extruded member of a channel-like cross section defined by a base with opposed flanges extending from the opposite ends of the base and to one side thereof.  One of the flanges includes a slot arrangement which cooperates to engage to a tie plate which can be initially supported from the strongback. The tie plate will then pass through a tie bar and an appropriate mechanical arrangement will allow tensioning of the tie bar.  In one embodiment, the opposite flange from the one flange which cooperates with the tie plate is adapted to have a drop in wedge shape for cooperating with an upwardly opening bracket attached to an upright member. In this way, the strong back is easily supported from the wall form structure and conveniently supports, in an operative position, the tie plate in preparation for securing of the tie plate and also engages one end of the tie plate when a tensioning load is applied to the strongback.  A modified tie plate for high load applications is also disclosed which cooperates and engages the slot provided in the flange of the strongback and overlies this flange and overlies the base member and is adapted to contact an upright member adjacent the point of contact of the strongback with an upright member.  Thus, the tie plate is adapted to directly transmit some forces exerted thereon to an upright support member as well as through the strong back.
Patent CA-2111429-C (CA)
Title: Detachable bed legs
Inventor: MCDONNELL TIMOTHY J
IPC: A47C19/02
Filed: 1993-12-14
Granted: 1999-08-31
Abstract: Abstract of the Disclosure A  leg  apparatus  for  convenient  attachment  to  a conventional angle-brace bed frame such that the height of the bed may be increased thereby increasing the area  or storage beneath and also for producing a more aesthetically pleasing appearance.  The invention embodies one type of leg for attachment to the perimeter frame and a second type of leg for attachment to the frame cross-member.
Patent CA-2111853-C (CA)
Title: Substantially pure receptor like tgf-.beta.1 binding molecules and uses thereof
Inventor: ICHIJO HIDENORI
IPC: C07K16/00
Filed: 1992-06-18
Granted: 2002-09-17
Abstract: The invention relates to a family of substantially pure, receptor like TGF-.beta.1 binding glycoproteins. These molecules are characterized by molecular masses of 160 kd, 70-80 kd, and 30-40 kd as determined by SDS-PAGE, and the ability to bind the TGF-.beta.1 molecule. This family of molecules is useful in identifying and/or quantifying TGF-.beta.1 in a sample, as well as inhibiting its effect on cells. Also described are nucleic acid sequences which code for the protein monomer making up the molecules.
Patent CA-2117585-C (CA)
Title: Cement composition
Inventor: SHAWL EDWARD T
IPC: C04B28/02
Filed: 1994-08-29
Granted: 2001-06-05
Abstract: The invention relates to a cement composition containing a shrinkage reducing amount of a synergistic additive combination of a component having the formula:          R1O(AO)nH wherein A is a C2-C4 alkylene group or a combination of C2-C4 alkylene groups, n is 1-10, and R1 is a C1-C10 alkyl or cycloalkyl group with an alcohol having the formula ROH where R is a C4-C10 alkyl or cycloalkyl group and/or a dihydroxy compound having the formula HO(AO)nH where A is as above and n is 1-8.
Patent CA-2119016-C (CA)
Inventor: HOLLISTER ANNE
IPC: A61F2/38
Filed: 1991-11-12
Granted: 1998-09-15
Abstract: L'invention porte sur une endoprothèse totale pour le genou comprenant un axe fixe de flexion-extension (FE) passant par tous les degrés de flexion et d'extension du genou.  L'endoprothèse comporte une pièce fémorale (20) présentant des condyles interne et externe (21, 22) espacés qui reposent de façon coulissante sur un implant tibial (24).  L'axe fixe de flexion-extension (FE) est orienté vers le bas et l'arrière, du condyle interne (21) au condyle externe (22), et est décalé également par rapport aux plans transversal et frontal de 3,0 à 3,8 degrés.  Un axe longitudinal (LR), à travers le tibia (3), permet à ce dernier (3) de pivoter de façon non orthogonale et vers l'avant par rapport à l'axe de flexion-extension (FE).  Une rainure à rotule (23) est perpendiculaire à l'axe de flexion-extension (FE).  Une pièce rotulienne (30) optionnelle ou la rotule naturelle (36) glisse dans la rainure à rotule (23).