baber/WOPTO huggingface dataset:
Patent CA-2313375-A1 (CA)
Inventor: PAGEAU DANIEL
IPC: B08B7/00
Filed: 2000-07-04
Abstract: A method for efficiently removing a film of paint from a surface, which comprises the steps of applying a paint stripper onto the film of paint to be removed; covering the film of paint and paint stripper applied thereto with an impermeable or semi-permeable barrier film; allowing the paint striper to act onto the paint at room temperature for a given period of time; and removing the barrier film and cleaning the surface by wiping it and/or washing it with water to remove any paint which has not come off, attached to the barrier film.
Patent CA-2316362-A1 (CA)
Title: Method for separating wax from waste paper
Inventor: VEMULA ROHINIKUMAR
IPC: D21C9/08
Filed: 1998-12-15
Abstract: A method for separating wax from wax containing paper. The method involves immersing the wax containing paper in a heated alkane solvent, preferably n-hexane, to dissolve the wax contained in the paper into the solvent. The dissolved wax and solvent forms a miscella which is later separated from the paper. Any residual solvent absorbed in the paper is removed therefrom. The method also involves retrieving the wax from the miscella.
Patent CA-2320609-A1 (CA)
Inventor: MOORE EDWARD
IPC: E21B43/12
Filed: 2000-09-21
Abstract: A "rotor hanger" device for alleviating or eliminating the downward pull on drive rods in an oil or gas well is inserted in-line with a tubing string. At surface prior to this insertion, an orbiting sub is connected to the top end of the stator, and the rotor is kept backed out of the stator and the orbiting sub. A six foot long drive rod is then connected to the rotor. Next, a bearing housing is joined to the orbiting sub by sliding the drive rod through the orbiting sub, thereby sliding the rotor into the stator. Once the bearing housing is threaded to the top end of the orbiting sub, the assembly may be lifted and installed into the well bore. The present device is used to space the rotor within the stator, and to space or stabilize the top end of any pump in the casing. An on-off tool is provided at the top end of the rotor hanger to provide a connection between the sucker rods and the bearing assembly, and hence to ultimately transfer drive to the drive rod.     The on-off tool and sucker rods can be kept snug by pulling on the rods to provide a slight tension.
Patent CA-2320727-A1 (CA)
Title: Laser modulators
Inventor: WEEKS ALAN
IPC: H01S3/00
Filed: 1999-02-22
Abstract: An optical transmitter module comprises a single package (21) enclosing a laser assembly (22, 23, 24) and an integrated optical circuit (32) having an input waveguide and an output waveguide. An optical fibre stub (27) optically interconnects the laser assembly and the optical circuit (32), the fibre stub (27) having one end supported to receive light from the laser assembly and the other end (33) optically coupled to the input waveguide of the optical circuit. An output optical fibre (34) is in optical communication with the output waveguide of the optical circuit and leads out of the package, whereby light emanating from the laser assembly is fed to the optical circuit and is there subjected to data-encoding before leaving the package through the output optical fibre.
Patent CA-2322729-A1 (CA)
Title: Modification of fatty acid metabolism in plants
Inventor: PATTERSON NII
IPC: C12N15/09
Filed: 1999-03-05
Abstract: Methods and systems to modify fatty acid biosynthesis and oxidation in plants to make new polymers are provided. Two enzymes are essential: a hydratase such as D-specific enoyl-CoA hydratase, for example, the hydratase obtained from Aeromonas caviae, and a .beta.-oxidation enzyme system. Some plants have a .beta.-oxidation enzyme system which is sufficient to modify polymer synthesis when the plants are engineered to express the hydratase. Examples demonstrate production of polymer by expression of these enzymes in transgenic plants. Examples also demonstrate that modifications in fatty acid biosynthesis can be used to alter plant phenotypes, decreasing or eliminating seed production and increasing green plant biomass, as well as producing polyhydroxyalkanoates.
Patent CA-2323315-A1 (CA)
Title: Process for the preparation of piperidinylaminomethyl trifluoromethyl cyclic ether compounds
Inventor: CARON STEPHANE
IPC: C07C69/66
Filed: 2000-10-16
Abstract: The present invention relates to a novel process for the preparation of a diastereomeric mixture of piperidinylaminomethyl trifluoromethyl cyclic ether compounds of formulae Ia and lb:     (SEE FORMULA Ia) (SEE FORMULA Ib) and pharmaceutically acceptable salts thereof, wherein R1 is C1-C6 alkyl; R2 is C1-C6 alkyl, halo C1-C6 alkyl or phenyl or substituted phenyl; R3 is hydrogen or halo; m is zero, one or two, and wherein the mixture is highly enriched in the compound of formula Ia, and to novel processes for the preparation and purification of intermediate compounds useful in the preparation of compounds of formulae Ia and Ib. The compounds of the formulae Ia and Ib have substance P  antagonist activities and are useful as medicine for treating diseases such as central nervous system disorders.
Patent CA-2327642-A1 (CA)
Title: Cylinder head with two-plane water jacket
Inventor: HAUGEN DAVID JAMES
IPC: F02F1/38
Filed: 2000-12-06
Abstract: A cylinder head for an engine having a two-plane water jacket in which a lower chamber at one plane through the head cools the fire deck of each cylinder and a cross-flow passage for the coolant is spaced above the lower chambers in a second plane through the head directs coolant to an outlet. The two planes of the water jacket are connected by an annular passage surrounding the injector nozzle sleeve and has machined surfaces whereby the size of the flow channel and thus the coolant flow between the two planes is better controlled to enable more even cooling of the fire deck resulting in less variability in fire deck temperature from one cylinder to one another. The lower chambers cooling the fire deck are separate for each cylinder to prevent heated coolant from one cylinder flowing to the next cylinder fire deck.
Patent CA-2331246-A1 (CA)
Title: Conveying device
Inventor: STAUBER H ULRICH
IPC: B65G23/30
Filed: 2001-01-17
Abstract: In an adjustment zone (B), the spacings between objects, which are conveyed by in-dependently movable holding elements (2) along a rail track (1) are e.g. for a proc-essing operation adjusted to a predefined value larger than the minimum spacing. To achieve this, a continuously circulating and compressible, adjusting chain (5) running in a circulating track is provided, which adjusting chain (5) is elongatable in a con-trolled manner. The circulating track extends at least in the adjustment zone (B) par-allel to the rail track (1) such that the adjusting chain is in engagement with holding elements (2) conveyed along the rail track (1). Furthermore, control means for ad-justing a predefined compression of the adjusting chain (5) are provided in the ad-justment zone (B). The adjusting chain (5) comprises e.g. chain links (6) joined to-gether in an articulated manner. Assigned to every second articulated joint of chain links (6) are guide rollers (7.1) rolling in a circular guideway (8) and drivers for driving holding elements (2), and assigned to the other articulated joints are control rollers (12) rolling along a cam (11) which serves as control means. The distance between the circular guideway (8) and the cam (11) determines compression of the adjusting chain (5) and therefore the spacing between the holding elements (2) in the adjustment zone (B). The device is suitable in particular for adjusting spacings be-tween holding elements greater than the minimum spacings as established between holding elements being conveyed in a pushed manner, wherein the holding elements are pushed and the adjusting chain (5) is circulating passively. (Figure 1)
Patent CA-2332022-A1 (CA)
Inventor: SAVOIE J JAMES C
IPC: E04G15/06
Filed: 2001-01-19
Abstract: The invention provides a simplified method of preparing a hole in a poured concrete form for the insertion of a expandable anchoring device, or core hole once the forms are removed. The cylinder body has a hollow center which accepts a hex head screw to allow attachment to a wood form. The diameter of the base of the cylinder body is larger than the diameter of the opposite end of the cylinder body to allow easy removal of the form when the wood forms are removed. The device may be attached to any surface where once the concrete is hardened that surface will be removed. As the size of the hole required increases so does the size of the cylinder body. As the size of the cylinder body increases to become a core hole rather than a hole for a expandable anchoring device the base and opposite end of the cylinder body breakaway as the surface it is attached to is removed leaving a liner for the hole.
Patent CA-2332209-A1 (CA)
Title: Wire bond pad and method therefor
Inventor: COLLINS PETER MICHAEL FREDERIC
IPC: H01L23/498
Filed: 2001-01-24
Abstract: A wire bond pad in an electrical circuit device package and method therefor including forming an opening in a conductor of a first electrically conductive material, forming a conducting member of a second electrically conductive material, transferring the conducting member into the opening of the conductor, electrically contacting the conducting member with the conductor, and embedding conductor with the conducting member in the opening thereof in an insulating electrical circuit device package.
Patent CA-2332407-A1 (CA)
Inventor: DAVIS MARK FRANKLIN
IPC: H03M7/30
Filed: 1990-01-29
Abstract: An encoder applies a digital filterbank such as a transform or subband filterbank to an input signal to generate frequency subband information, encodes the resultant subband information using adaptive bit allocation to generate fixed-length values represented by fixed numbers of bits and variable-length values represented by variable numbers of bits, and formats the subband information into an encoded signal in which the fixed-length values are assembled into preestablished positions within the encoded signal. In response to an encoded signal including subband information represented by fixed-length values and variable-length values, a decoder extracts fixed-length values represented by fixed numbers of bits from preestablished positions within the encoded signal, extracts variable-length values represented by variable numbers of bits, wherein the variable numbers of bits are established in response to fixed-length values, and generates an output signal by applying an inverse filterbank to the extracted subband information. <IMAGE>
Patent CA-2336265-A1 (CA)
Inventor: HAMBLY HUGH
IPC: F16K15/14
Filed: 2001-03-01
Abstract: A bidirectional check valve controls movement of fluid. A valve body has an opening, a further opening and a passage connecting the opening and the further opening.  A poppet is disposed within the passage of the valve body, and a spring is coupled to the poppet. A further poppet is disposed within the passage formed in the first mentioned poppet, and a further spring is coupled to the poppet and to the further poppet. When fluid passing through the opening in the valve body exerts a force on the poppet that is greater than the spring force, the further portion of the outer surface of the poppet is directed away from the further portion of the wall of the passage and permits the fluid to flow from the opening in the valve body through a channel and to the further opening in the valve body. When fluid passing through the further opening in the valve body exerts a force on the further poppet that is greater than the further spring force, the further portion of the outer surface of the further poppet is directed away from the further opening in the valve body to open a further channel in the poppet and permit the fluid to flow from the further opening in the valve body through the further channel, at least one opening in the further poppet, a further passage in the further poppet, a further opening in the further poppet and an opening in the poppet to the opening of the valve body.
Patent CA-2337122-A1 (CA)
Inventor: WEAVER JIMMIE D
IPC: C09K8/575
Filed: 2001-03-05
Abstract: The present invention provides a method of treating a subterranean formation with a particulate laden fluid whereby particulate flowback is reduced or prevented while also providing a controlled release of a treatment chemical within the formation. The method includes the steps of providing a fluid suspension including a mixture of a particulate, a tackifying compound and a treatment chemical, pumping the suspension into a subterranean formation and depositing the mixture within the formation whereby the tackifying compound retards movement of at least a portion of the particulate within the formation upon flow of fluids from the subterranean formation and said tackifying compound retards release of at least a portion.
Patent CA-2337977-A1 (CA)
Inventor: IWASAKI KATSUYUKI
IPC: B61C13/00
Filed: 2001-02-23
Abstract: One end of a running direction of a bogie two guiding wheels are arranged, and another end of the running direction of the bogie two stabilizing wheels are arranged.      The stabilizing wheel is positioned in a lower portion of the guiding wheel. The stabilizing wheel has a function for guiding the bogie along to the monorail and a function for preventing the bogie from falling. A total number of the guiding wheels and the stabilizing wheels can be reduced, specifically the number of guiding wheels, and accordingly the bogie can be manufactured with a low cost.      A traction link for connecting the bogie and the car body is arranged on one end of the bogie and accordingly the bogie length can be shortened.
Patent CA-2339061-A1 (CA)
Title: Amplificateur optique a semi-conducteur
Inventor: SHVEIKIN VASILY I
IPC: H01S5/32
Filed: 1999-03-11
Abstract: Cette invention concerne un amplificateur optique à semi-conducteur qui assure l'introduction d'un rayonnement entrant dans la zone active ainsi que l'extraction des modes sortant hors de cette zone. Cet amplificateur offre dans un même temps des valeurs sensiblement réduites d'astigmatisme et d'angle de dispersion, des ouvertures d'entrée et de sortie plus élevées, une longueur efficace de la zone d'amplification, une grande puissance de sortie, une grande luminosité, ainsi qu'une plage étendue de modifications des orientations des rayonnements d'entrée et de sortie. Cet amplificateur utilise des plages prédéterminées de compositions et d'épaisseurs de couches en ce qui concerne toute l'hétérostructure, y compris la couche active (6), et comprend également des ensembles de couches représentant une pluralité de couches de limitation (7, 8). L'un au moins de ces ensembles de couches fait partie intégrante d'un système d'entrée-sortie et longe la zone d'entrée-sortie du rayonnement (17). Cette invention concerne également une plage étendue d'angles d'entrée et de sortie, ainsi que différentes structures de la zone d'entrée-sortie du rayonnement (17) où l'on utilise des facettes optiques inclinées qui possèdent des plages prédéterminées d'angles d'inclinaison par rapport au plan de la couche active. Cette invention concerne en outre des amplificateurs optiques à semi-conducteur à double transmission, à plusieurs faisceaux et à plusieurs cascades qui peuvent être réalisés sous forme discrète ou intégrale.
Patent CA-2340684-A1 (CA)
Title: Battery constructions having reduced collector assembly volume
Inventor: TUCHOLSKI GARY R
IPC: H01M50/193
Filed: 1999-08-17
Abstract: An electrochemical cell is provided that includes: a can for containing electrochemically active materials including at least positive and negative electrodes and an electrolyte, the can having an open end a closed end; and a collector assembly positioned across the open end of the can, the collector assembly having a collector and a cover, the collector assembly defining a collector assembly volume. In one embodiment, the collector assembly volume is less than 5.0 percent of the total volume of the battery. In other embodiments, the collector assembly volume is less than 5.0 percent (D-sized  batteries), less than 6.0 percent (AA-sized batteries) and less than 7.0 percent (C- and AAA-sized batteries) of the total internal volume. In furthe r embodiments, the collector assembly volume is less than 2.5 cm3 (D-sized batteries), less than 1.7 cm3 (C-sized batteries), less than 0.50 cm3 (AA- sized batteries) and less than 0.24 cm3 (AAA-sized batteries).
Patent CA-2340839-A1 (CA)
Title: Collar system for firefighter's coat
Inventor: SNEDEKER JULIE A
IPC: A41D27/18
Filed: 2001-03-15
Abstract: An outer collar part is permanently secured to the shell body portion and to an inner collar part. A first moisture barrier is disposed adjacent the inner collar part, and a second moisture barrier is disposed between the first moisture barrier and the outer collar part. A third moisture barrier is disposed between the second moisture barrier and the outer collar part. A plurality of spaced lines of stitching connect the third moisture barrier with the outer collar part to form air pockets. A liner includes a thermal barrier and a liner moisture barrier. Cooperating hook and loop fastening portions are supported on the thermal barrier of the liner and the inner collar part to removably secure the thermal barrier to the inner collar part. Further cooperating hook and loop fastening portions are supported on the second moisture barrier and the liner moisture barrier to removably secure the liner moisture barrier to the second moisture barrier and the outer collar portion. Sealing tape is disposed adjacent the further cooperating hook and loop fastening portions to prevent moisture from passing through the second moisture barrier and the liner moisture barrier.
Patent CA-2341512-A1 (CA)
Title: Systeme de radiocommunication capable d'adressage de multidiffusion et mode d'utilisation
Inventor: SHAUGHNESSY MARK
IPC: H04L12/56
Filed: 1999-08-24
Abstract: Ce système de radiocommunications (200) comprend un réseau à commutation de paquets (201) exploité en mode sans connexion couplé à une pluralité de sites (203-208) en communication par radio avec une pluralité d'unités d'abonnés (210-217) logiquement constituées en une pluralité de groupes de discussion pourvus des identifications de groupes de discussion correspondantes. Selon une première réalisation, chaque site tient à jour des tables (220-225) établissant des correspondances entre au moins une adresse de multidiffusion et au moins une identification de groupe de discussion. Selon une autre réalisation, la tenue à jour de telles tables de correspondance (320) est du ressort de chaque unité d'abonné. Lorsqu'une unité d'abonné vient s'inscrire dans un site particulier à un groupe de discussion (501, 601), le site fait l'identification d'une adresse de multidiffusion correspondant au groupe de discussion. Cette adresse de multidiffusion permet au site de participer au trafic aboutissant à l'adresse de multidiffusion considérée, et par conséquent au trafic aboutissant au groupe de discussion. Il en résulte une décentralisation du traitement de la mobilité, une amélioration de la variabilité dimensionnelle du système et une réduction des délais d'établissement de communication.
Patent CA-2342132-A1 (CA)
Inventor: MATSUZAWA KENJI
IPC: B01J27/053
Filed: 1999-08-26
Abstract: A method of isomerizing a feed material which has not undergone any special pretreatment such as desulfurization or a method of isomerizing a hydrocarbon using hydrogen containing a sulfur compound. The isomerization method is characterized by contacting hydrogen and a raw hydrocarbon containing sulfur compounds in an amount of 10 to 500 ppm in terms of sulfur amount by weight with a solid acid catalyst comprising a support containing a part consisting of zirconia and/or hydrated zirconia and a sulfuric acid ingredient deposited on the support. The isomerized hydrocarbon thus obtained preferably has a content of organic sulfur compounds of 10 ppm or lower in terms of sulfur amount by weight.
Patent CA-2342497-A1 (CA)
Title: Ambient atmospheric pressure compensation controller for pressurized copying device
Inventor: HOLLAR THOMAS C
IPC: G03G21/20
Filed: 2001-03-30
Abstract: A method and apparatus for maintaining the air pressure within a xerographic module/chamber of an image forming device above ambient pressure outside of the xerographic module/chamber which uses a pressure sensor, e.g., an altimeter to monitor ambient atmospheric pressure, and a microprocessor to control and maintain air pressure to a determined set point.
Patent CA-2342913-A1 (CA)
Inventor: NUIJTEN PETRUS ANTONIUS CORNEL
IPC: G11B20/12
Filed: 2000-06-27
Abstract: L'invention concerne un procédé pour incorporer des données supplémentaires dans un signal codé, selon un format différent du format utilisé pour coder les données du signal codé, et pour enregistrer ledit signal sur un support d'enregistrement de type disque par application de marques d'un premier type physique. Les données supplémentaires sont codées selon un second format, différent du format utilisé pour coder les données du signal codé. Les données de description de format concernant le second format sont enregistrées sur le support d'enregistrement, soit avec des marques du même type physique modulées selon une seconde modulation différente, soit avec des marques d'un second type possédant différentes caractéristiques physiques par rapport au premier type.
Patent CA-2346251-A1 (CA)
Title: A method and system for updating noise estimates during pauses in an information signal
Inventor: WINN STEVE
IPC: G10L21/02
Filed: 1999-10-06
Abstract: The invention relates to an improved adaptive spectral estimator for estimating the spectral components in a signal (205) containing both an information signal, such as speech, and noise. A method and system provide for generating noise estimates (245) and then only updating the noise estimates during pauses in an information signal, when speech or other information is not detected, rather than continuously updating the noise estimates. A noise estimate is calculated for each frequency band and provides for the inclusion of a variable mathematical factor that can be set by the user to produce the best sound quality.
Patent CA-2348455-A1 (CA)
Inventor: SALTER PETER W
IPC: A61M15/00
Filed: 1999-11-03
Abstract: This invention is a device (10) for inspiration of a mist from a nebulizer, the device comprising an inlet connector (12, 32) adapted to engage an outlet port of a nebulizer; a hollow mouthpiece element (126, 34) for insertion into a patient's mouth; a conduit (14) forming a fluid connection between the inlet connector, and the hollow mouthpiece element; an exhaust valve (26) for removing expiratory gases which are exhaled into the mouthpiece element to the ambient atmosphere via the exhaust/positive expiratory pressure (PEP) valve (26, 50) positioned on the conduit between the inlet connector, and the mouthpiece element; and a filter housing (44) containing a filter (60) for filtering the exhaled gases passing from the exhaust/PEP valve.
Patent CA-2348651-A1 (CA)
Title: Floor cleaning apparatus having a foam distributing device therein
Inventor: BESEL ARLEN DALE
IPC: B05B3/02
Filed: 1999-12-08
Abstract: A fluid distribution device (12) for distributing cleaning fluid to the floor surface comprises a hollow tube extender (56) attached to a hollow fixed shaft (52). A hub assembly (58) having a plurality of hollow open-ended spokes (60, 1-5) is rotatably mounted to the tube extender (56). If used with a brush floor cleaning apparatus a portion of each spoke extends into and terminates within a radial passage (42, 1-5) in the brush (32).