baber/WOPTO huggingface dataset:
Patent CA-2271384-A1 (CA)
Inventor: SUN TONG
IPC: D21H21/20
Filed: 1997-11-25
Abstract: The invention is a method for improving the efficiency of aqueous cationic wet strength additives by pretreating cellulose surfaces with reactive anionic compounds, thus providing the cellulose surface with additional anionic sites suitable for retaining a high proportion of said cationic wet strength additives on the cellulose. The wet strength additives on the cellulose surface are cured or reacted with the cellulose surface. The resulting fibrous material has unusually high wet strength with unusually low doses of cationic wet strength additive. The preferred reactive anionic compounds comprise compounds having a reactive group suitable for covalent bonding to hydroxyl groups on cellulose, and further having sulfonic or other anionic end groups capable of attracting cationic wet strength compounds in aqueous solution.
Patent CA-2273580-A1 (CA)
Inventor: SCODELLARO ENI
IPC: G03B27/46
Filed: 1999-05-27
Abstract: Photographic material guide arrangements for the guidance of photographic material between at least three spaced apart photographic material guide paths along which photographic material, especially films or photographic paper, is guided, which includes the following: a selector with a receiving end for the taking up of photographic material from one end of a guide path and an output end for giving off photographic material to one end of another guide path, whereby the selector is constructed for the guiding of photographic material from the receiving end to the output end, whereby the selector is movable between different connecting positions wherein respectively at least two guide paths are connected with one another by way of the selector in order to guide photographic material from one end of a guide path to another end of a guide path through the selector, whereby with the change of the connecting position, at least one of the path ends connected by the selector changes.
Patent CA-2274398-A1 (CA)
Inventor: COLAS MARIE-JOSE
IPC: A61M16/22
Filed: 1999-06-11
Abstract: A single breath induction anesthesia apparatus for anesthetising a patient, comprises a gas delivery system for delivering at least one gas to the patient, an oxygen supply system for providing oxygen, and an oxygen/anesthesia gas supply system for mixing oxygen and at least one anesthesia gas at a preset optimum ratio sufficient to cause anesthesia of the patient with a single breath, thereby providing an oxygen/anesthesia gas mixture. The apparatus of the invention further includes a valve for providing selective gas flow communication between the oxygen supply system and the gas delivery system or between the oxygen/anesthesia gas supply system and the gas delivery system. The valve is operable for first establishing gas flow communication between the oxygen delivery system and the gas delivery system to deliver oxygen to the patient and permit pre-oxygenation thereof, while inhibiting gas flow communication between the oxygen/anesthesia gas supply system and the gas delivery system to allow the oxygen/anesthesia gas mixture to reach the preset optimum ratio, and thereafter establishing gas flow communication between the oxygen/anesthesia gas supply system and the gas delivery system to deliver the oxygen/anesthesia gas mixture to the patient and permit single breath induction anesthesia thereof, while inhibiting gas flow communication between the oxygen supply system and the gas delivery system.
Patent CA-2275580-A1 (CA)
Inventor: HALIMI EDWARD M
IPC: F25D7/00
Filed: 1996-12-20
Abstract: A beverage container such as a can contains pressurized beverage together with a cartridge (32) containing a refrigerant such as carbon dioxide. A cartridge holder (42) holds the cartridge in place by engaging the inside of the can. A  cartridge piercer (68) is positioned between the cartridge and the can end.  When the can is filled and the end installed, the pressurized beverage releases part of its gas which increases gas pressure within the can. The increasing gas pressure deflects the can ends which are resilient. The released beverage gas also arms and lengthens the cartridge piercer to engage substantially under the deflected can end (20). When the can pressure is released, the cartridge piercer pierces the cartridge to release the carbon dioxide therein to chill the beverage container and its contents.
Patent CA-2276761-A1 (CA)
Title: Arched window blind
Inventor: SHAW TREVOR
IPC: E06B9/24
Filed: 1999-06-29
Abstract: An arcuately deployable blind for arched frame windows includes a base, a pivot mounted to the base and positionable over a center of curvature of a window frame of the arched frame window, and a slide arm, rotatably mounted at first end to the pivot. An arcuate guide secured to the base. An arcuately deployable pleated blind has first and second parallel longitudinal sides and first and second parallel transverse edges. The edges extend generally at right angles to, and contiguous with the sides. A follower on the pleated blind is in sliding cooperation with the guide. The first edge of the blind is fastened to the base. The second edge of the blind is slidably fastened to the slide arm. An actuator deploys and retracts the blind.
Patent CA-2278307-A1 (CA)
Title: Novel cannabinoid receptor modulators
Inventor: ELLIOTT JOHN DUNCAN
IPC: C07D231/14
Filed: 1998-01-20
Abstract: Novel pyrazole derivatives are provided which are cannabinoid receptor modulators.
Patent CA-2278675-A1 (CA)
Title: Hard gelatine capsules containing pharmaceutical compositions substantially free of any oil
Inventor: MEINZER ARMIN
IPC: A61K9/64
Filed: 1998-01-28
Abstract: The present invention provides a hard gelatine capsule containing a pharmaceutical composition comprising cyclosporin A in a mixture with a surfactant of HLB value at least 10, substantially free of any oil and when a hydrophilic phase is present, the hydrophilic phase being a polyethylene glycol and/or a lower alkanol provided that any lower alkanol present is present in less than 12 % of the total weight of the composition absent the hard gelatine capsule.
Patent CA-2280901-A1 (CA)
Title: Process for making hydrophobic silica with reduced surface area under neutral conditions
Inventor: HAHN JAMES R
IPC: C01B33/159
Filed: 1998-02-18
Abstract: The present invention is hydrophobic silica gels having a reduced surface area and a method for their preparation under natural conditions. The method comprises two steps, where in the first step the pH of a mixture comprising a silica hydrosol and colloidal silica is adjusted with a base to within a range of pH 3 to pH 6 to facilitate formation of a silica hydrogel having incorporated therein colloidal silica. In the second step the silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the silica hydrogel to form a hydrophobic silica gel having a surface area within a range of about 100 m2/g to 450 m2/g in the dry state. In a preferred process the hydrophobic silica gel is contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic silica hydrogel into a hydrophobic silica organogel. A water soluble compound of cerium or iron may be added during conduct of the second step to improve heat stability of the hydrophobic silica gel.
Patent CA-2283003-A1 (CA)
Inventor: MILLER KENT ALLAN
IPC: F16K5/06
Filed: 1999-09-22
Abstract: An incrementally positionable ball valve for use in the fluid circuit of a refrigeration or air conditioning system which can be remotely controlled by a low amperage control signal is disclosed. The ball valve harnesses the pressurized refrigerant from the fluid circuit in which it is installed as the primary power medium to actuate the valve. A sensor provides feedback to a controller relating to the incremental position of the valve. The controller then controls the operation of the valve in accordance with predetermined criteria. In another embodiment, the ball valve incorporates locator detents so that its incremental position can be determined by an operator manually controlling the valve. In still another aspect of the invention, a restrictor is provided for varying the flow capacity of the valve.
Patent CA-2287388-A1 (CA)
Title: Dual compressed video bitstream camera for universal serial bus connection
Inventor: HSIEH PETER H
IPC: H04N7/26
Filed: 1999-02-17
Abstract: A method for presenting video on a local monitor (318) and a remote monitor (300') includes encoding (312) an original video signal (V) to produce a first compressed video signal (LLV_1). Using the first compressed video signal, the video signal is also encoded to produce a second compressed video signal (ELV_1). Both the first and second compressed video signals are transmitted to a local terminal (314) where they are decoded to produce first (DVL_1) and second decoded video signals. A first decoded version of the video signal (DVE_1) is produced from a combination of the first and second decoded video signals. Only the first compressed video (LLV_1; LLV_r) signal is transmitted to the remote terminal at which a second decoded version (DVL_r) of the video signal is recovered from only the first compressed video signal (LLV_r). The first compressed video signal may be produced by motion compensation temporally encoding (460) and spatially encoding (430) the original video signal (V). The second compressed video signal may be produced by both spatially and motion compensation temporally decoding the first compressed video signal and subtracting (418) each pixel of each picture thereof from a corresponding, spatially and temporally aligned pixel of a picture of the original video signal (V) to form a difference video signal. The difference video signal is then only spatially encoded to produce the second compressed video signal. To produce the first decoded version of the original video signal, the first compressed video signal may be both spatially (504, 506, 508) and motion compensation temporally (510, 512, SW) decoded and the second compressed video signal may be only spatially decoded. Each pixel of each picture of the second decoded video signal may be added (514) to a corresponding temporally and spatially aligned picture pixel of the first decoded video signal.
Patent CA-2287939-A1 (CA)
Title: System and method for communication media management
Inventor: WELLS PETER M
IPC: H04M1/27475
Filed: 1998-04-27
Abstract: A system and method for consolidating access to communication media into a single, configurable interface accessible by callers.
Patent CA-2290485-A1 (CA)
Title: Method for the production of non-immunogenic proteins
Inventor: CARTER GRAHAM
IPC: C07K14/315
Filed: 1998-05-21
Abstract: Protein, or parts of proteins, may be rendered non-immunogenic, or less immunogenic, to a given species by identifying in their amino acid sequences one or more potential epitopes for T-cells of the given species and modifying the amino acid sequence to eliminate at least one of the T-cell epitopes. This eliminates or reduces the immunogenicity of the protein when exposed to the immune system of the given species. Monoclonal antibodies and other immunoglobulin-like molecules can particularly benefit from being de-immunised in this way: for example, mouse-derived immunoglobulins can be de-immunised for human therapeutic use.
Patent CA-2292084-A1 (CA)
Title: Print window improvement for continuous ink jet printer
Inventor: ENZ RICHARD T
IPC: B41J2/085
Filed: 1999-12-13
Abstract: A system and method are provided for improving the operating latitude for the charging and deflection voltage of an ink jet printhead, by catching non-print drops with a wall impinging catcher to form a fluid layer in a face of the catcher; and lowering drag on the fluid layer on the catcher face. This is accomplished by providing a drop generator for producing ink drops and a catcher/charge plate assembly for catching and recirculating non print drops. A printhead frame maintains the alignment of the drop generator and the catcher/charge plate assembly. Temperature induced distortion of these components is eliminated by heating them to a constant temperature.
Patent CA-2292850-A1 (CA)
Inventor: KWON ANDREW H
IPC: H01H59/00
Filed: 1999-12-20
Abstract: A planar microwave switch matrix including a plurality of inputs for receiving input signals, a plurality of outputs for transmitting output signals, and a plurality of nodes connecting the inputs to the outputs. Each node includes a switch, an input coupler and an output coupler. The input and output couplers connecting input lines to output lines such that any input can be connected through a switch to any output. The planar microwave switch matrix is formed on a dual-sided circuit board to form a plurality of co-planar waveguide transmission lines.      The layout of the microwave switch matrix allows any combination of input lines and output lines to be connected at a given time, while providing sufficient signal isolation to prevent interference.
Patent CA-2292977-A1 (CA)
Title: Length adjustable belt tensioning arm
Inventor: HANKINS LYNN
IPC: F16H7/14
Filed: 1999-12-22
Abstract: A tensioning device includes an adjustable tensioning arm having first and second opposed ends, a first mounting bracket secured to the first end of the adjustable tensioning arm, and a second mounting bracket pivotally connected to the second end of the adjustable tensioning arm. The adjustable tensioning arm includes a middle member having first and second opposed ends, a first end member engaged with and extending from the first end of the middle member and a second end member engaged with and extending from the second end of the middle member.
Patent CA-2294222-A1 (CA)
Inventor: MUMFORD GREGORY L
IPC: H04M3/42
Filed: 1998-06-16
Abstract: A method and system for providing enhanced skills based routing of telephone calls is provided. The enhanced skills based routing database. In a call center, an automated call distributor queries the skills based routing program for an appropriate agent console to service a received call. The skills based routing program determines the required product skills for the received call and determines the appropriate agent console to service the call. The determination of an appropriate agent console is based upon the proficiency system comprises a skills based routing program and a skills based routing agents for the required product skills. In one embodiment, the proficiency levels for the various agents are stored in a skills based routing database and retrieved as necessary. The proficiency levels of the agents can take into account efficiency and throughput as well as training on particular call center products.
Patent CA-2297187-A1 (CA)
Inventor: MELTZER PETER C
IPC: A61K38/00
Filed: 1998-07-10
Abstract: Cette invention se rapporte à de nouveaux analogues de tropanes qui se lient aux transporteurs de monoamines, en particulier des tropanes 8-aza, 8-carbo et 8-oxo ayant 6 ou 7 substituants. Ces composés peuvent être racémiques, R-énantiomères purs ou S-énantiomères purs. Certains composés de cette invention ont une sélectivité élevée exprimée par le rapport entre DAT et SERT. Cette invention concerne également des compositions thérapeutiques pharmaceutiques contenant ces composés formulés dans un véhicule pharmaceutiquement acceptable, ainsi qu'un procédé permettant d'inhiber la réabsorption de 5-hydroxy-triptamines par un transporteur de monoamines, grâce à la mise en contact du transporteur de monoamines avec un composé de cette invention en quantité propre à inhiber la réabsorption de 5-hydroxy-triptamines. Les transporteurs de monoamines préférés pour la réalisation de cette invention sont le tranporteur de dopamine (DAT), le transporteur de sérotonine (SERT) et le transporteur de noradrénaline.
Patent CA-2298396-A1 (CA)
Title: Method and system for controlling an air-to-fuel ratio in a non-stoichiometric power governed gaseous-fueled stationary internal combustion engine
Inventor: WEISBROD ERIC J
IPC: F02D19/02
Filed: 2000-02-14
Abstract: A gaseous-fueled reciprocating internal combustion engine includes a carburetor having a throttle valve that is controlled by a speed governor. A proportional fuel control valve is disposed intermediate a fuel supply and the carburetor, and is controlled by an air fuel computing device. The computing device generates a control signal to adjust the fuel control valve based on a governor sensed variable indicative of engine speed, sensed engine torque, a governor output signal from the governor indicative of an opening position of the throttle valve wherein 100% corresponds to a wide open throttle position, and 0% corresponds to a closed position, and a lean combustion control map containing predetermined set point values stored in memory. During operation, the control valve is responsive to the control signal generated by the computing device for adjustment of a fuel flow therethrough so as to obtain a ratio of air to fuel provided to the engine that is substantially at a lean misfire limit of the engine, thereby reducing fuel consumption, NO x emissions, and reducing exhaust gas temperatures.      Alternatively, the control signal is generated using engine speed alone.
Patent CA-2302274-A1 (CA)
Inventor: STOLL DETLEF
IPC: H04L7/033
Filed: 1998-08-18
Abstract: The invention relates to a circuit and a method for minimising bit errors. Corresponding bits of a bit sequence are compared with the corrected bit sequence or an error signal. If they do not correspond, the adjacent bits of the corrected bit sequence are used to correct a decision criterion made up of a scanning time and a threshold value.
Patent CA-2302971-A1 (CA)
Title: Paired row furrow opener
Inventor: HENRY JAMES WAYNE
IPC: A01C5/06
Filed: 2000-03-29
Abstract: A ground-engaging paired row furrow forming tool includes a tool body having fore and aft ends with an outer edge defined on each of two opposing sides of the tool body. A furrowing wing is located adjacent each of the opposing sides and protrudes from bottom portions of the tool body. The tool body has lower surfaces including a central front surface portion which is angled upwards towards the fore end and a center passage is defined between the furrowing wings. This passageway is in part defined by a central rear surface portion which is adapted to be substantially aligned fore to aft in a direction of travel T during operation of the ground engaging tool. This paired row opener works well without compromise in a broad range of soil conditions without fouling and enables planting of seed rows spaced widely apart while minimizing soil surface disturbance.
Patent CA-2302977-A1 (CA)
Inventor: STANG DARREN L
IPC: E21B31/113
Filed: 2000-03-28
Abstract: A hydraulic drilling jar having an outer generally hollow housing, an inner mandrel, an anvil, a hammer, and a hydraulic valve. The mandrel has a first end securable to a drill string and a second end slidably receivable within an end of the housing to form a fluid chamber therewith. The mandrel is slidable within the housing from a contracted position to an extended position. One of the anvil and the hammer is situated on the housing and the other on the mandrel. The valve is received around the second end of the mandrel and in the fluid chamber. Extension of the jar causes the valve to seat against the housing and the mandrel to bifurcate the fluid chamber into first and second portions while pressurizing the first portion to place the jar in a cocked configuration. Further extension of the jar causes a high impact loading of the anvil and hammer portions.
Patent CA-2303415-A1 (CA)
Title: Animal carrier
Inventor: RICHMOND EDWARD
IPC: A01K1/03
Filed: 1997-09-22
Abstract: A pet housing (10) expansible to hold a pet and collapsible to suitcase size for manual transport includes a pair of platforms (12 and 14) and first and second pairs of spaced walls (16, 18, 20 and 22). The walls (16, 18, 20 and 22) in the first pair (e.g. front and rear walls) are pivotably attached at opposite ends to the platforms (12 and 14) and are hinged at intermediate positions for collapse and expansion. The walls (16, 18, 20 and 22) in the second pair (e.g. side walls) are pivotable toward an individual one of the platforms (12 and 14) with the platform as a fulcrum to collapse the housing and toward the other platform to expand the housing. In the collapsed housing disposition, detents on opposite sides of the hinge (26) on the first pair of walls releasably engage to maintain the housing collapsed. A manually grippable handle (30) on one of the platforms (12) provides for a transport of the collapsed housing (10). With the walls in the first pair expanded, detents (42 and 44) on the walls in the first and second pairs of housings releasably engage to maintain the expanded housing enclosure (10). A second handle (36) on one of the platforms (14) is manually grippable to provide for the housing (10) transport in the expanded relationship. Third detents (60) provide for a releasable closing and opening, preferably on a vertical axis, of a door (50) in one of the second pair of walls. The walls in the first and second pairs are preferably formed from gratings of spaced wires to minimize weight and to provide a circulation of air through the housing (10) from the atmosphere in the expanded housing (10).
Patent CA-2304800-A1 (CA)
Title: Contraceptive transcervical fallopian tube occlusion devices and methods
Inventor: NIKOLCHEV JULIAN N
IPC: A61B17/12
Filed: 1998-09-23
Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device (10) is enhanced by forming the structure at least in part from copper or a copper alloy. The device (10) is anchored within the fallopian tube by a lumen-traversing region of the resilient structure which has a helical outer surface, together with a portion of the resilient structure which is biased to form a bent secondary shape, the secondary shape having a larger cross section than the fallopian tube.  The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released.  Optionally, permanent sterilization is effected by passing a current through the resilient structure to the tuba] walls.
Patent CA-2308294-A1 (CA)
Title: Systeme de distribution a base de dispersion d'emulsifiant dans une solution aqueuse de sucre
Inventor: DOUCET JIM
IPC: A23L27/00
Filed: 1998-11-12
Abstract: L'invention concerne l'utilisation d'un sucre, tel qu'un monosaccharide et/ou un disaccharide dans une solution aqueuse comme véhicule pour la distribution d'au moins un émulsifiant, ainsi que des système de distribution d'émulsifiants, des dispersions d'émulsifiants, des produits dérivés et des procédés de fabrication et d'utilisation desdits systèmes de distribution, desdites dispersions et desdits produits. L'émulsifiant est hydraté et se présente sous forme d'alpha-gel dans la dispersion. La dispersion présente une certaine durée de conservation pour ce qui concerne la conservation de l'alpha-gel, l'activité microbienne et la moisissure. Les produits fabriqués à partir de la dispersion présentent une durée de conservation accrue. Les dispersions de l'invention contiennent environ 15 à 40 % en poids d'émulsifiant, par exemple environ 26 à 30 % en poids, environ 42 à 65 % en poids de sucre et environ 10 à 20 % en poids d'eau. L'émulsifiant peut être un monodiglycéride. Le sucre peut être du dextrose ou du sirop de glucose à teneur élevée en fructose.