baber/WOPTO huggingface dataset:
Patent CA-2353753-C (CA)
Title: Improved process for manufacture of polyvinyl chloride
Inventor: STAINBROOK BARBARA
IPC: C08F218/08
Filed: 2001-07-25
Granted: 2009-09-29
Abstract: In the process according to the invention for the aqueous suspension polymerization of vinyl chloride, alone or as a mixture with another vinyl monomer, the polymerization initiator comprises at least one compound chosen from dialkyl peroxydicarbonates, peroxy-tert-alkanoates and diacyl peroxides and use is made, as agent for halting the polymerization, of a mono- or disubstituted hydroxylamine. The resins thus obtained exhibit improved color and heat stability.
Patent CA-2355976-C (CA)
Title: Vascular endothelial cell growth factor antagonists and uses thereof
Inventor: VAN BRUGGEN NICHOLAS
IPC: A61P9/10
Filed: 1999-12-09
Granted: 2012-07-17
Abstract: The present invention provides vascular endothelial cell growth factor (VEGF) antagonists and methods of using VEGF antagonists. VEGF antagonists contemplated by the invention include VEGF antibodies and VEGF receptor fusion proteins. Methods of treating edema and stroke using VEGF antagonists are also provided.
Patent CA-2358064-C (CA)
Title: Vibration reducers for archery bows
Inventor: SIMS STEVEN C
IPC: F41B5/20
Filed: 2000-01-06
Granted: 2005-06-07
Abstract: Disclosed are devices for modifying the pattern of vibrations set up in a bow when an arrow is released. The devices (22, 24) may have an integral head (42) and stem (44), and are fabricated from elastomeric material. The devices may be attached directly to bow limbs, using various attachments such as adhesive (58, 60), or a threaded stem (68).      The devices may also be attached to the end of a bow stabilizer (140).
Patent CA-2362297-C (CA)
Inventor: HOLLINGSWORTH RAWLE I
IPC: C08F38/00
Filed: 2000-02-17
Granted: 2005-12-27
Abstract: Polyacetylene compounds and process for the preparation thereof from a chira l dihydroxy amide are described. The compounds preferably have diacyl groups attached to the amide. The compounds are usefu l for making films which are electrically conductive, near infrared absorbing, polarizing, and have the characteristic optical and othe r properties of polyacetylenes.
Patent CA-2370220-C (CA)
Title: Improved slot guard for slotted rail terminal
Inventor: BLIGH ROGER P
IPC: E01F15/04
Filed: 2000-05-04
Granted: 2006-07-18
Abstract: Slot guards (34) for slotted rail terminals (10) are described having a central section (44) and a pair of wing portions (50, 50') that are angularl y disposed with respect to the central portion (44). The wing portions (50, 50 ') are folded away from the plane of the central section (44) along lines that are angularly oriented with respect to one another so that the wing portions (50, 50') are wider at one end of the slot guard (34) than at the other end. As a result, the slot guard (34) provides a greater height at one of its end s than at the other end. Apertures (52) for connectors (36) are disposed throu gh each of the wing portions (50, 50'), but not through the central portion (44 ). The slot guard (34) preferably provides an asymmetrical aperture pattern and/or conspicuous markings so that the slot guard (34) is not inadvertently installed in a reversed configuration on a guardrail (12). Methods for formi ng the slot guard (34) are also described wherein a blank for a slot guard (34) is cut or stamped out of a sheet of metal. Apertures (52) for the receipt of connectors (36) are cut into the blank, preferably in an asymmetrical patter n. Longitudinal sides of the blank are then bent along non-parallel lines to provide the wing portions.
Patent CA-2378412-C (CA)
Inventor: OHTA YOUICHI
IPC: B23K33/00
Filed: 2002-03-22
Granted: 2010-12-14
Abstract: An object of the present invention is to provide an excellent weld nut wherein the weld nut and an iron plate are closely fixed together by inserting extra metal materials upon welding into a groove around a weld projection. The present invention relates to weld nuts each having such a groove in the vicinity of such a weld projection.
Patent CA-2380048-C (CA)
Title: A system for relative vehicle navigation
Inventor: DUFF ELLIOT STANLEY
IPC: G05D1/02
Filed: 2000-07-24
Granted: 2011-08-16
Abstract: A means of navigating without localisation infrastructure or external control, an autonomous vehicle along a path that is confined by walls that are within range of on-board sensors by determining the relative location and orientation of the walls with respect to the vehicle, the means comprising means of controlling the vehicle, including setting steer angle and ground speed, without localisation comprising hardware and means to: (a) use range data to establish free space in front of vehicle; (b) use active contours (or snakes) to generate a desired path; (c) use driving hints to guide the or a said snake, for instance along arcs and open areas; and/or to (d) use steering hints to confine the snake to a specific domain of free space, for instance at intersections; and (e) use desired path to generate steering demand and velocity.
Patent CA-2391242-C (CA)
Title: Nitrogen rejection method and apparatus
Inventor: OAKEY JOHN DOUGLAS
IPC: B01D3/00
Filed: 2002-06-25
Granted: 2010-03-30
Abstract: Nitrogen is rejected from a feed gas stream comprising methane and nitrogen so as to form a methane product. The feed gas stream is cooled in a main heat exchanger 4, and the cooled feed gas stream is rectified in a double rectification column 12 comprising a higher pressure rectification column 14, a lower pressure rectification column 16, and a condenser-reboiler 18 placing the higher pressure rectification column 14 in heat exchange relationship with the lower pressure rectification column 16. At least part of the feed gas stream being expanded through a valve 23 into the higher pressure rectification column 14, the feed gas stream being partially liquefied upstream of the double rectification column. Over a period of time, the mole fraction of nitrogen in the feed gas stream may increase. The operating pressure of the lower pressure rectification column 16 is periodically increased in response to increases in the said mole fraction of nitrogen. A back pressure valve 58 may be periodically adjusted to effect the increase in pressure.
Patent CA-2395366-C (CA)
Inventor: MILLS PETER SHELLEY
IPC: E21D9/00
Filed: 2001-02-21
Granted: 2008-01-29
Abstract: L'invention concerne un procédé permettant d'obtenir un revêtement de protection dans une mine, qui consiste à pulvériser sur les surfaces rocheuses de la mine un adhésif thermofusible en une quantité permettant de former une couche d'au moins 1 mm, de préférence d'au moins 2 mm en épaisseur, et à laisser durcir ce revêtement. L'adhésif thermofusible possède un point de fusion de préférence dans le domaine de 70 à 250  DEG C, et il peut contenir une charge, telle qu'un matériau inerte sous forme finement divisée, comme par exemple de la chaux, du mica, du sable et de la silice broyés, la charge représentant entre 1 et 40 % en poids du poids combiné d'adhésif et de la charge.
Patent CA-2395558-C (CA)
Inventor: ES-SAYED MAZEN
IPC: A61P11/08
Filed: 1998-10-31
Granted: 2007-07-17
Abstract: Compounds of the general formula (II) or (IV) are intermediates in the preparation of 2-phenyl-substituted imidazotriazinones, which have pharmaceutical activity.      wherein R1 represents hydrogen or straight-chain or branched alkyl having up to 4 carbon atoms; R2 represents straight-chain alkyl having up to 4 carbon atoms; L represents straight-chain or branched alkyl having up to 4 carbon atoms; and R5 and R6 are identical or different and each represents hydrogen, straight-chain or branched alkyl having up to 6 carbon atoms, hydroxyl or straight-chain or branched alkoxy having up to 6 carbon atoms. Also provided are processes for preparing the compounds (II) and (IV).
Patent CA-2401709-C (CA)
Title: Wireless downhole well interval inflow and injection control
Inventor: HIRSCH JOHN MICHELE
IPC: E21B47/12
Filed: 2001-03-02
Granted: 2009-06-23
Abstract: Apparatus and methods of electrically controlling downhole well interval inflow and/or injection. The downhole controllable well section (71) comprises a communications and controle modul e (80), a sensor (82), an electrically controllable valve (84), and an induction choke (90). The electrically controllable valve (84) is adpated to regulate flow between an exterior of the tubing (40) and an interior (104) of the tubing. Power and signal transmission between surface and downhole is carried out via the tubing (40) and/or the casing (30). When there are multiple downhole controllable well sections (72-75), flow inhibitors (61-65) separate the well sections.
Patent CA-2403310-C (CA)
Title: Single crystal gan substrate, method of growing same and method of producing same
Inventor: UEMATSU KOJI
IPC: C30B25/18
Filed: 2002-09-13
Granted: 2007-07-10
Abstract: Seeds are implanted in a regular pattern upon an undersubstrate. A GaN crystal is grown on the seed implanted undersubstrate by a facet growth method. The facet growth makes facet pits above the seeds. The facets assemble dislocations to the pit bottoms from neighboring regions and make closed defect accumulating regions (H) under the facet bottoms. The closed defect accumulating regions (H) arrest dislocations permanently.  Release of dislocations, radial planar defect assemblies and linear defect assemblies are forbidden. The surrounding accompanying low dislocation single crystal regions (Z) and extra low dislocation single crystal regions (Y) are low dislocation density single crystals.
Patent CA-2415275-C (CA)
Title: Improved methods of synthesis for 9-substituted hypoxanthine derivatives
Inventor: GLASKY ALVIN
IPC: C07D233/88
Filed: 2001-06-08
Granted: 2011-01-04
Abstract: An improved method of systhesis of a 9-substituted hypoxanthine derivative comprises the steps of: (1) reacting aminocyanacetamide with triethyl orthoformate to form an imidoester derivative of aminocyanacetamide; (2) forming a compound having a reactive amino group on a hydrocarbyl moiety, the hydrocarbyl moiety being linked through an amide group to a physiologically active moiety or an esterified derivative of a physiologically active moiety including therein an esterified benzoyl group; (3) reacting the imidoester with the compound having the reactive amino group on the hydrocarbyl moiety to form a derivative of 5-aminoimidazole-4-carboxamide substituted at the 1-position with a hydrocarbyl moiety linked through an amide group to a physiologically active moiety including therein an optionally esterified benzoyl group; (4) forming the six-membered heterocyclic ring of the purine moiety of the hypoxanthine by reacting the derivative of 5-aminoimidazole-4-carboxamide formed in step (3) with triethyl orthoformate to form a 9-substituted hypoxanthine compound substituted at the 9-position with a hydrocarbyl moiety linked through an amide group to a physiologically active moiety including therein an optionally esterified benzoyl group; and (5) hydrolyzing the ester of the optionally esterified group if present.
Patent CA-2417183-C (CA)
Title: Low profile infusion set
Inventor: WOJCIK STEVEN E
IPC: A61M5/178
Filed: 2001-06-08
Granted: 2009-06-02
Abstract: An infusion set (10) for administration of fluid to a subcutaneous layer includes a cannula housing (12). The needle housing (14) has a pair of flexible sidewalls (94,96) and a resilient band (102) connected to the sidewalls (98,100). The resilient band (102) is lockably engageable with the cannula housing (12) to thereby secure the housings together, and is releasable from the cannula housing (12) when the sidewalls (94,96) are pressed toward each other to deform the resilient band (102). A hollow needle extends out of a main body of the needle housing (14) for delivering fluid to the cannula from a fluid source. The walls of the needle housing (14) extend beyond a distal end of the hollow needle to prevent needle contact with contaminated surfaces and inadvertent injury.
Patent CA-2426618-C (CA)
Inventor: MATUSZ GLENN
IPC: A47L9/10
Filed: 2003-04-28
Granted: 2006-08-15
Abstract: The invention is an agitator configuration for a floor care appliance such as an upright vacuum cleaner. The floor care appliance is provided with at least two agitator chambers each having at least one rotary agitator member disposed therein. In the preferred embodiment of the present invention, a vacuum cleaner suction nozzle is provided with symmetric left and right agitator disposed adjacent one another.  A front agitator assembly comprised of a left arid right agitator half-section is disposed in the left and right agitator chambers, respectively. A rear agitator is located rearward of the front agitator assembly and is also comprised of a left and right agitator half section disposed in the left and right agitator chambers, respectively. A plurality of brush members extend from each agitator half-section arranged in a helical pattern around the circumference of each of the agitator-half-sections. The left and right agitator half-sections of the front agitator assembly have opposite helical patterns so that a "chevron" pattern is formed from the front agitator assembly. The "chevron" brush pattern sweeps dirt particles from the center of the suction nozzle along the front of the cleaner toward the suction nozzle's outer edges. Similarly, the left and right agitator half-sections of the rear agitator assembly have opposite helical patterns so that a "chevron" pattern is formed from the rear agitator assembly. The "chevron" brush pattern sweeps dirt particles from the center of the suction nozzle along the rear edge of the suction nozzle toward the suction nozzle's outer edges.
Patent CA-2427038-C (CA)
Inventor: RUETHER HORST
IPC: G01F23/14
Filed: 2003-04-29
Granted: 2008-07-15
Abstract: The invention relates to a method for determining the current filling level of a liquid, preferably a calibrating, quality control, or cleaning fluid, or waste water, in a container, far example of an analyzer, where an immersion pipe is dipped into the liquid in the container to be filled or drained, which immersion pipe is connected to a pumping device via a tube system. The invention proposes that the pressure p in the tube system should be measured and increased, starting from the ambient pressure p0, until a first discontinuous pressure change occurs at pressure p1 due to the liquid column in the immersion pipe being forced out of the pipe, and/or that the pressure p in the tube system should be decreased until the liquid column in the immersion pipe reaches a change in cross-section of the immersion pipe, which change is situated above the maximum filling level of the liquid, such that a second discontinuous pressure change occurs at pressure p2 due to the liquid column reaching the change in cross-section, and that the pressure difference between ambient pressure p0 and the pressure p1 or p2 at one of the two pressure discontinuities or the time t1 or t2 until one of the two pressure discontinuities is reached, should tie recorded and used to determine the current filling level of the container.
Patent CA-2429041-C (CA)
Title: Dispositif de securite physique pour ordinateur
Inventor: KUO LAMBERT
IPC: E05B73/00
Filed: 2001-07-12
Granted: 2009-06-30
Abstract: L'invention concerne un système de sécurité physique équipé d'un cadenas (630) à combinaison, qui comprend un dispositif (650) portatif présentant une paroi (655) définissant une fente de sécurité (660) de sécurité ; un corps (605) présentant une extrémité supérieure, une extrémité inférieure et une paroi latérale située entre celles-ci. L'extrémité supérieure comprend un élément (610) destiné à s'engager dans la fente, qui comporte un élément (615) de blocage pouvant être inséré dans la fente (660) de sécurité ; et un élément (620) de retenue, placé entre l'élément (615) de blocage et le corps (605), et destiné à entrer en contact avec une partie extérieure de la paroi (655) située à proximité de la fente (660) de sécurité lorsque l'élément (615) de blocage est introduit dans la fente (660) de sécurité pour faciliter le déplacement de l'élément (610) en position rétractée, par l'application de force sur le corps (605). L'élément (615) de blocage s'étend dans la fente (660) de sécurité, et l'élément (610) peut être déplacé par rapport au corps (605) entre une position étendue et une position rétractée ; cet élément (610) est sollicité en position étendue et est fixé rotatif par rapport au corps (605).
Patent CA-2429403-C (CA)
Inventor: REYNOLDS CHRISTOPHER JOHN
IPC: A47G27/02
Filed: 2001-11-19
Granted: 2008-07-22
Abstract: A mat for use on sand has a lower layer (2) and an upper layer (3). Sand is able to pass through both layers. Sand failing on the upper layer (3) can pass through it and either remain trapped between the two layers or pass through the lower layer (2) to the ground. The perimeters of each layer are preferably sewn together with overlapping tape (4). Suitable materials for the upper layer and lower layer Include polypropylene mesh material, particularly shade cloth with a shade rating of approximately 70%. The mat may optionally include a sand--permeable third layer positioned over the upper layer. The third layer may be made from polyvinylchloride-coated nylon mesh material, and may be screen printed.
Patent CA-2430608-C (CA)
Inventor: CHERNE LARRY W
IPC: H01S3/223
Filed: 2003-06-02
Granted: 2012-01-10
Abstract: La présente invention vise en partie un gaz de résonateur laser au dioxyde de carbone qui comprend du dioxyde de carbone, de l'hélium et de l'azote, et qui présente une concentration d'halocarbure totale inférieure à environ 100 parties par trillion. Dans une version, la concentration d'halocarbure totale est inférieure à 50 parties par trillion. Les gaz du résonateur laser, les systèmes laser et les méthodes de la présente invention fournissent un rendement élevé et une lumière laser à haute énergie, tout en diminuant les frais d'entretien et en améliorant la performance d'un système laser en limitant la concentration totale d'halocarbure.
Patent CA-2432880-C (CA)
Inventor: GILLESPIE RICHARD D III
IPC: A61M5/28
Filed: 2001-12-21
Granted: 2009-12-08
Abstract: An automatic mixing and injecting apparatus comprises a syringe assembly (400) within a housing (100). The syringe assembly (400) has a chamber (425) for holding a liquid, which can be a liquid medicine or a solvent. A second chamber (460) may hold a dry medicine. The second chamber (460) is releasably sealed with respect to the first chamber (425). A spring-operated plunger (300) forces liquid from the first chamber (425) and causes the releasable seal (430) to disengage when the needle (540) has entered the recipient. At this time, the liquid flows through the second chamber (460) and dissolves any dry medicine in that chamber (460). A releasable coupling (340) disengages the plunger (300) from the driver spring (500) and allows the plunger (300), syringe assembly (400), and needle (540) to retract under the urging of a return spring (505).
Patent CA-2434457-C (CA)
Inventor: MORGAN WILLIAM BEVLY
IPC: B63C11/12
Filed: 2002-01-07
Granted: 2008-08-12
Abstract: Disclosed is a flexible full face mask (10) to supply breathable air to humans when in environments where it is not possible to breathe, such as underwater masks, or in environments having toxic gases or similar toxic conditions. The mask (10) includes a mask skirt (12) in the form of a one-piece flexible face seal and separate rigid frame components (74, 84) which define separated self-contained spaces (151, 152) that are connected together in a manner to allow each self-contained space (151, 152) to individually conform and seal against the contours of the face of the wearer. The mask (10) also includes a removable adaptor pod (90) mounted on a lower (84) of the frame components to enable full access to the mouth of the wearer while maintaining the mask (10) in sealed relation on the facial surfaces of the wearer.
Patent CA-2440518-C (CA)
Inventor: HENNINGSEN MICHAEL
IPC: C07D265/30
Filed: 2002-03-15
Granted: 2010-05-25
Abstract: L'invention concerne un procédé pour réaliser des 2,6-dialkyle morpholines N-substituées de formule générale (I), dans laquelle R?1¿ et R?2¿ représentent indépendamment hydrogène, alkyle ou cycloalkyle, ou bien R?1¿ et R?2¿, avec l'atome de carbone auquel ils sont liés, signifient un carbocycle de 5 à 14 chaînons, et R?3¿ et R?4¿ représentent indépendamment alkyle ou cycloalkyle. Selon l'invention, au moins une liaison carbonyle de formule générale (II), dans laquelle R?1¿ et R?2¿ ont les significations susmentionnées, est mise à réagir avec au moins une morpholine de formule générale (III), dans laquelle R?3¿ et R?4¿ ont les significations susmentionnées, en présence d'hydrogène et d'au moins un catalyseur métallique. L'invention est caractérisée en ce que le composant actif du catalyseur est essentiellement constitué de métaux du groupe platine.
Patent CA-2442387-C (CA)
Title: Process for incorporating whey proteins into foodstuffs
Inventor: WOLFSCHOON ALAN F
IPC: A23L13/40
Filed: 2002-04-08
Granted: 2010-08-10
Abstract: The present invention is concerned with the incorporation of whey proteins into foodstuffs by acidifying an aqueous solution of one or more whey proteins below their isoelectric pH, optionally forming a whey protein-stabilized fatty emulsion by blending and homogenizing said acidified solution of whey proteins with one or more fats, heat-treating said acidified solution or whey protein-stabilized fatty emulsion and blending same with a foodstuff base to from a foodstuff, and optionally blending and incubating the food stuff with a transglutaminase.
Patent CA-2446179-C (CA)
Inventor: ROSEN ERIC
IPC: H04L12/56
Filed: 2002-05-14
Granted: 2012-01-24
Abstract: A method and apparatus for reducing latency in a group communication network (100) provides for a significant reduction in the actual total dormancy wakeup time and the PTT{XE"PTT"} latency by exchanging group call signaling even when mobiles (102, 102, 106) are dormant and no traffic channel is active. The method and apparatus provides for exchanging the group call signaling through the use of the short data burst (SDB) message signaling. The method and apparatus provides for re-establishing dedicated traffic channels for the talker mobile and the dormant listener mobiles advantageously in parallel.
Patent CA-2450912-C (CA)
Inventor: HUNTER ROBERT ALAN
IPC: C11D7/22
Filed: 2002-08-19
Granted: 2010-10-12
Abstract: L'invention concerne une composition constituée d'une silicone et d'un polysaccharide substitué comprenant des liaisons .beta.¿1-4? qui sont liées de manière covalente au fragment de polysaccharide, au moins un groupe améliorant le dépôt qui subit une modification chimique dans l'eau à une température d'emploi afin d'augmenter l'affinité du polysaccharide pour un substrat. Le polysaccharide substitué comprend en outre au moins une chaîne de silicone choisie de manière indépendante.
Patent CA-2454810-C (CA)
Inventor: RADTKE DAVID E
IPC: E05D7/00
Filed: 2003-12-31
Granted: 2008-12-16
Abstract: A hinge arrangement for a welder enclosure includes a door panel having at least one hinge at one end that is engagable in a slot of a base to allow the door panel to move between a maximum closed position to a maximum open position. The hinge and slot arrangement of the door panel and base allow the door panel to open and close through a rotation point from a maximum open position to a maximum closed position, and also allows complete removal of the door panel at certain positions between the maximum open position and the maximum closed position.