baber/WOPTO huggingface dataset:
Patent CA-2168433-C (CA)
Inventor: GOZDZ ANTONI STANISLAW
IPC: H01M50/426
Filed: 1994-08-02
Granted: 1999-09-14
Abstract: A flexible polymeric film useful as an interelectrode separator or electrolyte member (45) in electrolytic devices, such as rechargeable batteries, comprises a copolymer of vinylidene fluoride with 8 to 25 % hexafluoropropylene.  The film may be cast or formed as a self-supporting layer retaining about 20 to 70 % of a high-boiling solvent or solvent mixture plasticizer comprising such compounds as ethylene carbonate, propylene carbonate, dimethyl carbonate, and dibutyl phthalate.  The film may be used in such form or after leaching of the retained plasticizer with a film-inert low-boiling solvent to provide a separator member into which a solution of electrolytic salt is subsequently imbibed to displace retained plasticizer or replace plasticizer previously leached from the polymeric matrix.
Patent CA-2170587-C (CA)
Title: Multi-thread re-entrant marker with simultaneous switching
Inventor: HO WING
IPC: G08B13/24
Filed: 1996-02-28
Granted: 2007-07-03
Abstract: A marker for a harmonic electronic article surveillance system includes three wires of magnetic material arranged in parallel. The material has a magnetic hysteresis loop with a large Barkhausen discontinuity such that, upon exposure of the marker to an external magnetic field whose field strength in the direction opposing the instantaneous magnetic polarization of the marker exceeds a predetermined threshold value, there results a regenerative reversal of the magnetic polarization in the material. The three wires are coupled at opposite ends thereof by magnetic charge spreading elements formed of a highly permeable material so that all three wires exhibit the regenerative reversal simultaneously on exposure to the above--described magnetic field. The resulting harmonic marker can be formed with a substantially shorter over-all length than previously practical markers of the harmonic type while providing a signal of comparable amplitude.
Patent CA-2171009-C (CA)
Inventor: DEJACO ANDREW P
IPC: G10L25/78
Filed: 1995-08-01
Granted: 2006-04-11
Abstract: Procédé qui permet de réduire la probabilité de coder des sons non vocaux à faible énergie en tant que bruit de fond. Un taux de codage est déterminé par la division du signal d'entrée en sous-bandes à l'aide de filtres (4, 6) de sous-bandes numériques et par la comparaison de l'énergie de ces bandes à une série de seuils dans des éléments (12, 14) de décision de taux de sous-bande, puis par l'examen de ces comparaisons dans un sélectionneur (16) de taux de codage. Ce procédé permet de distinguer les sons non vocaux du bruit de fond. La présente invention concerne également un moyen de fixer les niveaux de seuil à l'aide du rapport signal/bruit du signal d'entrée, ainsi qu'un procédé de codage de musique par un vocodeur à taux variable constituant à examiner la périodicité du signal d'entrée pour distinguer la musique du bruit de fond.
Patent CA-2172948-C (CA)
Inventor: IANNELLI ANTHONY
IPC: E04D13/076
Filed: 1996-03-28
Granted: 2003-09-09
Abstract: A rain gutter shield for preventing leaves and other debris from entering a raingutter is provided.  The gutter is attached to a house adjacent to and directly beneath an edge of a roof of the house, and the rain gutter shield of the present invention comprises a sheet of material having a length and a width, this sheet formed so as to comprise: (a) a substantially planar primary surface securable to the roof such that at least a portion of the primary surface may lie atop said roof; (b) a substantially arcuate surface extending downwardly from the primary surface; (c) a trough having a plurality of perforations along its length, the perforated trough attached to and positioned beneath the arcuate section of the shield; and (d) a front section securable to the front of the gutter; wherein water may traverse across the primary surface, around at least a portion of the arcuate surface, into the trough, and through the perforations into the trough. The primary surface of the shield preferably has a plurality of protuberances extending across its width.
Patent CA-2173622-C (CA)
Title: Improvements in pipe lining
Inventor: RODRIGUEZ ALAN
IPC: F16L55/165
Filed: 1994-09-29
Granted: 2005-04-05
Abstract: A tubular liner for a pipe is collapsed on itself to define a pair of lobes. The lobes are folded into a Central region so that bending modulus and radius are reduced. The liner can be stored in a tighter coil and can be introduced into an underground pipe co be lined at a more acute angle.
Patent CA-2173641-C (CA)
Title: Switched-inverter modulator
Inventor: GERSTENBERG JOHN W
IPC: H03K7/10
Filed: 1996-04-09
Granted: 1999-11-23
Abstract: A switched-inverter modulator (40) for use in driving a load (11) that comprisesmaster and slave high voltage power supplies (41, 42) for providing output pulses that directly drive the load (11). A synchronized pulse generator (45) provides pulse width timing and synchronized amplitude commands to the master power supply (41). The timing pulse instructs the power supplies (41, 42) when to initiate high voltage and for what time interval. The analog waveform instructs the master power supply (41) as to what high voltage level to obtain. The master power supply (41) may have multiple slaves (42) connected in parallel for additional current capacity. A low voltage DC capacitor bank (43) is connected in parallel with each of the power supplies (41, 42) to supplement energy storage. Isolation resistors (44) are coupled between outputs of the respective high voltage power supplies (41, 42) and the load (11) to minimize temporary shorts from ringing back into the power supplies (41, 42). A ramp generator (48) is provided for synchronizing timing pulses with corresponding amplitude commands, and for controlling the rise time of each power supply (41, 42). The switched-inverter modulator (40) is capable of varying pulse widths, pulse repetition frequencies, and amplitude output applied to the load (11), and complex radio frequency pulse trains may be created. The present invention provides for the smallest, lightest, and most versatile pulse modulator (40) available using current state-of-the-art technology to drive the load (11), and in particular a magnetron (11).
Patent CA-2178777-C (CA)
Inventor: MIYAZAKI SHINICHI
IPC: H04B1/40
Filed: 1996-06-11
Granted: 2000-04-04
Abstract: The object of the present invention is to realize a radio transmitter/receiver in which a receiving local oscillation means composed of a PLL including a divid-ing circuit is free from an erroneous operation due to an invasion of a transmitting signal and a suppression of power consumed is achieved.  A frequency mixing cir-cuit 3 receives a local oscillation signal S3 from a receiving local oscillation means 5 and converts a receiving signal S1 into an intermediate frequency signal.  A transmitting section 6 output a transmitting signal S4 during talking.  A transmitting detection circuit 7 detects the transmitting signal S4 to output a transmitting detection signal S5.  An amplifying circuit 51 of receiving local oscillation means 5 is supplied with a current from a current source circuit 52 and amplifies the local oscillation signal S3.  The current source circuit 52 increases the supply current upon the receipt of the transmitting detection signal S5 and increases the gain of the amplifying circuit 51.          A rejection filter 86 is constituted such that the rejection filter 86 exhibits a low impedance for the frequency of the transmitting signal.  A switch 53 is rendered to be in the ON state upon the receipt of the transmitting detection signal S5 so that the rejection filter 86 function to attenuate the transmitting signal which interferes into the dividing circuit.
Patent CA-2179192-C (CA)
Title: Surfactants providing enhanced efficacy and/or rainfastness to pesticide formulations
Inventor: KASSEBAUM JAMES WEB
IPC: A01N57/20
Filed: 1994-11-30
Granted: 2000-10-24
Abstract: There is provided a new method of use of secondary or tertiary alcohol surfactants to enhance the efficacy and/or rainfastness of foliar-applied pesticidal and plant growth modifying agents. More specifically, there are provided new and useful compositions of such agents, in particular the herbicide N-phosphonomethylglycine or its salts or mixtures thereof. containing such efficacy-enhancing or rainfastness-enhancing surfactants.
Patent CA-2181979-C (CA)
Inventor: BRADEN VERONICA K
IPC: C10G7/10
Filed: 1996-07-24
Granted: 2008-10-14
Abstract: 2-amino-1-methoxypropane is used as a neutralizing amine in crude oil distillation units. The amine of the invention gives superior neutralization at the first initial condensate compared to other commonly used neutralizing amines.
Patent CA-2185900-C (CA)
Inventor: WAIN KEVIN JAMES
IPC: B26B21/14
Filed: 1995-04-04
Granted: 1999-08-31
Abstract: A shaving unit includes a skin engagement surface member for contact with the skin in advance of a blade edge and defined by a series of resiliently mounted elements (9) defining between them slots (10) through which hairs can pass while being subjected to a light pulling force to increase the length of hair projecting from the skin prior to cutting.  The skin engagement surface member may be a guard of the shaving unit or it can be mounted between two blades.
Patent CA-2188907-C (CA)
Title: Combination compound for contraception based on natural estrogen
Inventor: DITTGEN MICHAEL
IPC: A61P15/18
Filed: 1996-10-25
Granted: 2001-02-27
Abstract: The combination preparation for contraception includes from 2 to 4 first stage daily dosage portions each including an effective amount of at least one natural estrogen as sole active ingredient, from 16 to 22 second stage daily dosage portions each including an effective amount of a combination of at least one natural estrogen and at least one natural or synthetic gestogen as active ingredient; from 2 to 4 third stage daily dosage portions each including an effective amount of at least one natural estrogen as sole active ingredient; and from 2 to 4 final stage daily dosage portions containing a pharmaceutically acceptable placebo. The estrogen may be estradiol, an estradiol compound that is metabolized to estradiol when taken into the body, a conjugated equine estrogen or a phytoestrogen. The natural or synthetic gestogen can be natural progesterone or a synthetic gestogens, such as medroxyprogesterone acetate.
Patent CA-2194297-C (CA)
Title: Artificial hair for implantation and process for producing the same
Inventor: YAMADA SHIRO
IPC: A61F2/10
Filed: 1996-06-04
Granted: 2000-05-23
Abstract: An artificial hair having a physiologically active surface which is formed by a such manner that protein (collagen) molecules are bonded chemically to the graft-polymerized chains introduced onto the surface of the artificial hair. When the artificial hair is implanted into a human body skin, the collagen layer 11 fixed to the surface of the artificial hair having a root part 12 is integrally assimilated and bonded to collagens in the epidermis 4, the corium layer 5, the subcutaneous tissue 6 and the galea 7, whereby the artificial hair can be firmly fixed. Thus, this artificial hair exhibits a low infection rate, a high success rate and is not accompanied by down-growth.
Patent CA-2194952-C (CA)
Title: Lubricating compositions
Inventor: SCHARF CURTIS R
IPC: C10M169/04
Filed: 1997-01-13
Granted: 2006-05-23
Abstract: This invention relates to a lubricating composition comprising at least about 30 % by weight at least one mineral oil, having a kinematic viscosity of less than about 8 cSt at 100°C, (A) from about 15% to about 40% by weight of at least one polymer, and (B) up to about 30 % by weight of at least one fluidizing agent, provided that when the fluidizing agent is a poly.alpha.-olefin having a kinematic viscosity from about 2 to about 30 cSt at 100°C, then the poly.alpha.-olefin is present in an amount up to about 12% by weight, wherein the lubricating composition has a shear loss of less than about 15% in the 20 hour taper bearing shear test. The invention also relates to concentrates used in preparing lubricating compositions. The present combination of components provides good low and high temperature properties especially when used in combination with one or more mineral oils. In one aspect, the compositions provide improved oxidation resistance.
Patent CA-2196239-C (CA)
Inventor: OTA YUSUKE
IPC: H04J14/02
Filed: 1997-01-29
Granted: 2002-09-10
Abstract: In a system where a second signal interferes with the detection of a first signal at an input, in which the second signal is composed of a low frequency component and a portion of the frequency spectrum that is higher than that of the first signal, then both signals are processed to eliminate such interferenceby filtering the second signal to eliminate the portion of the frequency spectrum that is higher than that of the first signal and eliminate the low frequency component of the second signal. Advantageously, such processing is done without affecting any low frequency component of the first signal.
Patent CA-2199379-C (CA)
Title: Squeegee roller for imaging systems
Inventor: TAGANSKY BOAZ
IPC: G03G15/00
Filed: 1995-06-06
Granted: 2001-05-29
Abstract: Squeegee apparatus (14) for squeegeeing excess material from a surface (12), from which surface at least a portion of the material remaining after squeegeeing is to be transferred to a second surface (16), comprising a first surface, having a central portion and two end portions having recessed surfaces and having a liquid material thereon at least in said central portion, said surface moving in a given direction at a squeegee region and a second, squeegee surface, urged against at least the central portion of the imaging surface at the squeegee region. In the preferred embodiments of the invention the squeegee apparatus is used in imaging apparatus, preferably utilizing liquid toner.
Patent CA-2199488-C (CA)
Title: Perles polymeres avec materiau particulaire incorpore et procede de preparation connexe
Inventor: BATES JAMES SYDNEY
IPC: C08F6/24
Filed: 1995-09-08
Granted: 2005-11-08
Abstract: L'invention concerne un procédé, qui permet de produire des perles polymères renfermant des particules solides, et ces perles polymères qui sont nouvelles. Ce procédé consiste à produire une dispersion comprenant une phase dispersée qui contient un ou plusieurs monomères et un matériau à particules solides, puis à faire subir à ce ou ces monomères une réaction de polymèrisation destinée à former ces perles polymères. Cette dispersion contient aussi un dispersant en phase solide qui disperse les particules solides du matériau dans la phase dispersée. Ce dispersant réagit avec un monomère au moins pour s'incorporer chimiquement dans le polymère. Les perles polymères comportent une matrice polymère, où le matériau à particules solides est dispersé de façon virtuellement uniforme, matrice qui contient le dispersant en phase solide ayant subi une réaction chimique.
Patent CA-2203843-C (CA)
Inventor: WONG JONATHAN P H
IPC: A61K31/713
Filed: 1997-04-28
Granted: 2013-07-23
Abstract: Although poly ICLC possess a broad spectrum of antimicrobial and anticancer activities, it therapeutic potential has yet to be fulfilled due to its toxic side effect. This problem can be overcome by encapsulating poly ICLC within liposomes which provides a drug delivery system with slow sustained release characteristic and which has the ability to target the drug to sites of infection and tumor without causing systemic burden to normal tissues, thereby enhancing the immunological and biological activities of poly ICLC.
Patent CA-2204026-C (CA)
Title: Silicone surfactants for use in inert gas blown polyurethane foams
Inventor: MILLER GLENN A
IPC: C08G101/00
Filed: 1996-09-11
Granted: 2003-08-12
Abstract: It has now been found that the use of inert gases as an auxiliary blowing agent in flexible polyurethane foams places unexpected requirements on the composition of the silicone surfactants used in such foams. Typical silicone polyalkylene oxide polyether copolymer comb-type surfactants containing greater than about 37 % ethylene oxide in the pendant polyether chains cause large cells when added inert gas is used as the blowing agent.
Patent CA-2204666-C (CA)
Inventor: PATERSON YVONNE
IPC: C12R1/01
Filed: 1995-11-03
Granted: 2010-01-26
Abstract: L'invention a pour objet des vaccins contenant des Listeria monocytogenes de recombinaison pouvant exprimer des antigènes spécifiques contre les tumeurs. Ces vaccins, une fois administrés à un hôte, permettent d'induire une réponse immunitaire par rapport à l'antigène spécifique contre les tumeurs. L'invention traite également de procédés d'utilisation de ces vaccins pour supprimer la formation des tumeurs.
Patent CA-2207498-C (CA)
Inventor: SPINKS NIGEL
IPC: G08B25/14
Filed: 1997-06-10
Granted: 2001-12-18
Abstract: A converter provides an intermediary for allowing an alarm panel designed to use a first protocol to interact with a remote scanner using a second protocol.  The converter to the alarm panel is a remote receiver and thus the function of the alarm panel remains unchanged.  The converter to the remote scanner is an alarm panel.  The converter, in essence, has two receivers and two transmitters and a conversion table for converting system status signals from one protocol to a second protcol.
Patent CA-2212671-C (CA)
Title: Ascites valve
Inventor: LEVEEN HARRY H
IPC: A61M1/00
Filed: 1996-05-24
Granted: 2001-04-10
Abstract: This invention is a device (20) for the transfer of body fluids which accumulate in the peritoneum cavity into the vascular system comprising a peritoneal tube (26) connected to the inlet chamber (36) of a hollow plastic implanted valve assembly.  The valve assembly comprises a plastic housing (32) with an inlet and outlet, the peritoneal tube (26) being secured to the inlet leading to an inlet reservoir (36) located within the valve housing (32) and the venous tube (22) being secured to the outlet leading from the outlet reservoir (38) located within the valve housing (32).  The valve housing (32) defines a valve seat (40) having a flexible diaphragm valve (56) which rests against the valve seat (40), and moves away from said valve seat (40) in response to pressure exerted thereon to permit flow of the body fluid from the peritoneum through the valve housing (32) and into the venous tubing (22).
Patent CA-2212895-C (CA)
Title: Benzylpiperidines and piperazines as muscarinic antagonists
Inventor: TAGAT JAYARAM R
IPC: C07D233/84
Filed: 1996-02-16
Granted: 2007-04-10
Abstract: Di-N-substituted piperazine or 1,4 di-substituted piperadine compounds in accordance with formula (I) (including all isomers salts esters, and solvates) wherein R, R1, R2, R3, R4, R21, R27, R28, X, Y, and Z are as defined herein are muscarinic antagonists useful for treating cognitive disorders such as Alzheimer's disease. Pharmaceutical compositions and methods of preparation are also disclosed. Also disclosed are synergistic combinations of compounds of the above formula or other compounds capable of enhan cing acetylcholine release with acetylcholinesterase inhibitors.
Patent CA-2212905-C (CA)
Title: Pumpable organophilic clay/polyamide compositions useful as rheological additives
Inventor: REYNOLDS WILLIAM
IPC: C09D7/43
Filed: 1997-08-13
Granted: 2003-04-01
Abstract: A novel pourable organophilic clay polyamide composition useful as a rheological additive for organic fluid system comprising a) from about 5 to 15 weight percent of an organophilicly modified smectite-type clay, b) from about 25 to about 35 weight percent of one or more rheologically active polyamides and c) from about 40 to 60 weight percent of one or more organic solvents preferably selected from the group consisting of n-propanol, toluene and mineral spirits. The organophilic clay polyamide composition is used in non-aqueous fluid systems such as paints, inks, and coatings to provide improved rheological properties to the system.
Patent CA-2214465-C (CA)
Title: Materiau composite protege contre l'oxydation par une matrice autoregenerante, et methode de fabrication
Inventor: LAMAZOUADE GHISLAINE
IPC: C04B41/85
Filed: 1996-03-28
Granted: 2004-09-28
Abstract: Un matériau composite protégé par l'oxydation aux températures intermédiaires, n'excédant pas 850  DEG C, comprend un renfort fibreux densifié par une matrice qui comporte au moins une phase autocicatrisante comprenant un constituant précurseur de verre, tel que B4C ou un système Si-B-C, et du carbone libre (C) en excès avec un pourcentage massique compris entre 10 et 35 %. La ou chaque phase autocicatrisante peut être intercalée entre deux phases de matrice céramique, par exemple SiC. Lors de l'exposition du matériau à un milieu oxydant, l'oxydation du carbone libre favorise celle du précurseur et sa transformation en verre capable de colmater des fissures de la matrice par autocicatrisation.
Patent CA-2215892-C (CA)
Inventor: AUBE REJEAN
IPC: C06C7/00
Filed: 1997-09-17
Granted: 2005-11-15
Abstract: In-hole and surface detonators are provided which are essentially free from primary explosives. The detonators utilize a high energy pyrotechnic mixture of a fuel and an oxidizer for initiation of a base charge enclosed in the detonator, or for the initiation of adjacent shock tubes. Improved safety during manufacture and use of detonators is achieved.
Patent CA-2217004-C (CA)
Inventor: LUCAS CHARLES E
IPC: F16G11/04
Filed: 1996-04-18
Granted: 2006-10-17
Abstract: A wedge socket assembly (9) having a wedge socket (10), a pin (40) for connecting objects to the wedge socket, a wedge (50); and a bolt (64) for holding the wedge in the wedge socket. The wedge socket (10) has an elongated, hollow basket (12) of substantially rectangular cross section. The hollow basket (12) has a large opening (16) a t a first end (14), a small opening (20) at a second end (18) and an interior cross section tapering from said large opening (16) to said smal l opening (20). Connected to the basket (12) are a pair of jaws (30, 30') extending from opposite sides of the first end (14), and the jaws each have an opening (34, 34') therethrough aligned with one another, with the pin (40) inserted through the openings and retained by a cotter pin (42). The wedge (50) has a first wedge portion (52) with a large end (54) and a small end (56), and is of substantially the same shape as the interior of the basket (12). An extended portion (58) is connected to the small end (56) of the first wedge portion (52) and has an opening (60) therethrough, and is sized such that when the wedge is positioned within the basket the extended portion (58) extends through the small opening (20). The bolt (64) is inserted into the opening (60) in the extended portion (58), and is retained in the openin g by anut (66). In an alternate embodiment, a forged wire rope clip connects a wire rope to the extended wedge portion (58) through the opening (60).
Patent CA-2223185-C (CA)
Title: Cellulose food casing manufacturing method
Inventor: KAJIWARA EDWARD MAKOTO
IPC: B29C48/32
Filed: 1997-12-02
Granted: 2001-05-08
Abstract: The tubular extrusion of a thermoplastic nonderivatized cellulose solution about a mandrel and through a long air gap in excess of 304 mm is facilitated by use of a mandrel which is extensible from the extrusion die.  On extrusion start-up, the mandrel extends a short length from the die.  For steady-state operation, the mandrel is extended its full length from the die.  Also disclosed is a mandrel structure to facilitate the introduction of a nonsolvent liquid into the interior of the extruded tube at a high location on start-up of extrusion and at a lower location during steady-state operation.