baber/WOPTO huggingface dataset:
Patent CA-2220000-A1 (CA)
Inventor: WHITE DONALD ANDREW
IPC: C08F255/00
Filed: 1996-05-23
Abstract: La présente invention décrit un procédé de post-polymérisation destiné à modifier la répartition des poids moléculaires d'un polymère à répartition de poids moléculaire unimodale, lequel présente normalement une réduction de poids moléculaire lorsqu'il est soumis à un mélange à cisaillement élevé en présence d'un amorceur à radicaux libres, pour donner un polymère présentant une répartition de poids moléculaire bimodale. Ledit procédé consiste à: (a) chauffer un mélange constitué du polymère, d'un agent de réticulation polyinsaturé et, éventuellement, d'un amorceur à radicaux libres, pour obtenir un mélange uniforme; et à (b) soumettre ledit mélange à des conditions de mélange à cisaillement élevé jusqu'à obtention d'un polymère à répartition de poids moléculaire bimodale. Dans le mode préféré de réalisation, le mélange à cisaillement est effectué en présence d'un amorceur à radicaux libres tel que peroxyde organique et l'agent de réticulation est un composé bifonctionnel présentant une insaturation diallyle, divinyle ou diéthylénique. Le procédé permet de mettre au point des polymères présentant une répartition de poids moléculaire bimodale en raison du couplage de certaines des chaînes de polymères dégradées par des radicaux libres, fixées par addition du fait de la fonctionnalité insaturée de l'agent de réticulation. L'espèce à poids moléculaire élevé dans la répartition bimodale confère au polymère une plus grande résistance à la fusion et l'espèce à poids moléculaire plus faible confère des propriétés de transformation et de fusion améliorées.
Patent CA-2221501-A1 (CA)
Inventor: BAUER WALTER
IPC: F16D25/0638
Filed: 1997-11-19
Abstract: A disc assembly for use in, for example, an automatic transmission is disclosed.  The disc assembly includes a pair of spaced core members (15-16, 25-26, 36-37, 56-57).  A friction facing (17-18, 27-28, 42-43, 62, 77-78) is positioned on the outer side of at least one of said core members.  A grooved cooling layer (20, 30, 45, 61) is positioned between the pair of spaced core members and is in fluid communication with a cooling fluid.  The disc assembly is used with other disc assemblies and other power elements (12, 48, 65, 83) to form a clutch assembly for the transmission.
Patent CA-2223573-A1 (CA)
Title: Use of hydroxyethyl starch to prevent post surgical adhesion and as an intracavity carrier device
Inventor: DIZEREGA GERE STODDER
IPC: A61F2/82
Filed: 1996-05-31
Abstract: Hydroxyethyl starch (HES) and use thereof in methods are provided for reducing or preventing adhesion formation between tissue surfaces, e.g., organ surfaces, in body cavities following surgical procedures and for drug delivery. HES may be used as an absorbable mechanical barrier alone or in combination with one or more anti-adhesion formation compounds for application to injured areas of tissues, e.g., organs, situated in body cavities such as the peritoneal, pelvic, pleural cavity, central nervous system and interligamentous space. HES may also be used as an intracavity carrier device for delivery of pharmaceutically active agents.
Patent CA-2224310-A1 (CA)
Inventor: MCCORMICK JOSEPH A
IPC: B41L1/36
Filed: 1997-12-10
Abstract: An apparatus and method is provided for imprinting duplicate copies of a credit card receipt using a single-ply roll of paper.  The paper can be either coated on a first side with a carbonless coating that contains rupturable microcapsules, each filled with reactive, colorless dyes, and coated on a second side with a resin adapted to react with the colorless dyes, or coated on a  single side with self-contained microencapsulated colorless dyes and reactive resins.  To include transaction information printed on the credit card receipt as well as information written on the receipt by the customer (such as a signature and an indication of the amount of any gratuity), the transaction information is substantially duplicated in two separate fields each on a separate portion of the credit card receipt. At least part of the two separate portions are then aligned and presented to the customer for completion.  The two separate portions can be aligned by either folding the credit card receipt along a printed or imaginary line between the two separate portions, or by separating the two separate portions from one another and stacking the two separate portions one upon the other.
Patent CA-2224615-A1 (CA)
Title: Nozzle for atomizing liquid in two phase flow
Inventor: BASE TERENCE E
IPC: C10G9/00
Filed: 1997-12-11
Abstract: Mixing means, for producing a flow mixture of oil and steam, is combined with an atomizing nozzle to provide a nozzle assembly which produces a jet of very fine oil droplets. The nozzle assembly is used in conjunction with a reactor, such as a fluidized bed coker. The mixing means comprises a pipe, external of the reactor, having separate, spaced apart inlets for oil and steam. The steam inlet is upstream of the oil inlet. A reducing diameter nozzle is positioned in the pipe bore between the inlets, for accelerating the steam. The steam contacts the oil and turbulently moves down the pipe bore to produce what is known as a "bubbly flow" mixture. The mixture is fed to the nozzle, which is internal of the reactor. The nozzle has: an inlet; a first contraction section of reducing diameter for accelerating the flow, preferably to supersonic velocity, whereby the droplets are reduced in size; a diffuser section of expanding diameter wherein the mixture decelerates and a shock wave may be induced; a second contraction section operative to accelerate the mixture more than the first contraction section; and an orifice outlet for producing a jet or spray. The nozzle assembly has been shown to reduce droplet size from about 12,000µm to about 300µm.
Patent CA-2226181-A1 (CA)
Inventor: HOFER KLAUS
IPC: A61C17/22
Filed: 1998-01-05
Abstract: Electric toothbrush with a handle (1), a brush head (2) and a shank (3) which connects the handle to the brush head, and with a rotary motor (4) arranged in the handle which drives an unbalanced mass (5). According to the invention the unbalanced mass (5) driven by the motor (4) is supported on one side or on both sides in the shank (3) close to the brush head (2) and is driven via an extended drive shaft, preferably an intermediate shaft (6), by the motor (4).
Patent CA-2228961-A1 (CA)
Inventor: LUST VICTOR
IPC: B29C39/30
Filed: 1998-02-03
Abstract: Designs for basecurves are disclosed which are designed to promote adhesion of an excess polymer HEMA ring to the basecurve during a demolding operation such that the excess polymer HEMA ring is removed along with the basecurve during the demolding operation. The basecurve mold designs promote and maintain adhesion of an excess polymer HEMA ring to the basecurve in a process for molding cast contact lenses in mold assemblies, each comprising a frontcurve and a spaced basecurve, and wherein a molded lens is formed therebetween. In one embodiment an annular area of the basecurve mold adjacent to the excess polymer HEMA ring is formed with laser machining marks therein, formed by laser machining a corresponding annular area in a master mold used to cast the basecurve molds. In a second embodiment the annular area of the basecurve mold is formed with electric discharge machine marks therein, formed by electric discharge machining a corresponding annular area in a master mold used to cast the basecurve molds. In further embodiments, the annular area of the basecurve mold can be formed with projecting teeth which project into the excess polymer HEMA ring, or with an annular step which contacts the excess polymer HEMA ring. Moreover, the annular step can include a plurality of projecting teeth therearound, or can define a spoked design or an edgecut design.
Patent CA-2230310-A1 (CA)
Inventor: KLEIN-VELDERMAN JOHAN CHRISTIA
IPC: C11D17/00
Filed: 1996-07-29
Abstract: A non-spray-dried particulate detergent composition or component having a bulk density of at least 600 g/litre, prepared by mixing and granulating liquid and solid ingredients in a high-speed mixer/granulator, contains a builder polymer and/or a soil-release polymer. The polymer is incorporated during the mixing and granulation process in the form of a non-aqueous premix with a non-aqueous diluent.
Patent CA-2236734-A1 (CA)
Title: Polymeric compositions and method for use in low temperature well applications
Inventor: FROST KEITH A
IPC: C09K8/512
Filed: 1998-05-05
Abstract: The  present  invention  relates  to  improved  methods  and compositions  for  performing  well  completion  or  remedial procedures  in  subterranean  zones  having  temperatures  below about  70°F.    The  methods,  basically  comprise  the  steps  of introducing   into   the   zone   an   aqueous   solution   of   a polymerizable monomer, a polymerization initiator and an oxygen scavenger  comprised  of  stannous  chloride.    Thereafter,  the polymerizable monomer is allowed to polymerize in the zone.          The stannous chloride scavenges oxygen without generating free radicals and causing premature polymerization.
Patent CA-2238134-A1 (CA)
Title: Pressure monitoring guide wire and method for manufacturing such a guide wire
Inventor: SCHWAGER MICHAEL
IPC: A61B5/0215
Filed: 1998-05-20
Abstract: The pressure monitoring guide wire (1) comprises an elongated tube (1) made of one piece of elastic Nickel Titanium alloy. The distal end portion (3) of tube (1) has transverse openings (6) formed through wall (5) of tube (1) for the entry of pressure waves into lumen (4). The distal end portion (3) of tube (1) which encompasses the openings (6), is malleable. A thermal treatment is made to the distal end portion (3) of a guide wire formed of an elongated tube (1) of one piece of elastic Nickel Titanium alloy having a distal end portion (3) with transverse openings (6).
Patent CA-2240842-A1 (CA)
Title: Hair removal by selective photothermolysis with an alexandrite laser
Inventor: KLEIN ARIE
IPC: A61N5/06
Filed: 1996-12-18
Abstract: This invention is a hair removal by using an Alexandrite laser (50) emitting energy between 0.2 joules to 40 joules per pulse to provide an energy fluence between 15 joules and 70 joules per centimeter square, and having a pulse duration of between 100 microseconds and 10 milliseconds. A scanner (57) may be used to direct the laser beam on the tissue (60). The skin in the area to be irradiated may be shaved prior to exposure to laser treatment, and may be also covered by a protective substance serving as a heat sink (42).
Patent CA-2241493-A1 (CA)
Title: Mechanism for mounting a radiator above a vertical shaft engine
Inventor: ROACH JAMES EDWARD
IPC: B60K5/06
Filed: 1998-07-30
Abstract: A vehicle having a vertical shaft engine mounted to the vehicle frame via elastic mounting units which allow vibratory motion between the engine and the frame for reducing the amount of vibration transmitted from the engine to the frame during operation of the engine. A cooling fan is positioned directly above the engine for pulling air downwardly through a radiator positioned directly above the engine and fan. The radiator is supported in its position above the engine by being rigidly fixed with support members. The support members are rigidly fixed with and extend upwardly from the frame. The radiator is held in position by the support members and is not supported by the engine, and therefore the radiator is generally isolated from engine vibrations by the elastic mounting units.
Patent CA-2242482-A1 (CA)
Title: Method for improving pattern bandwidth of shaped beam reflectarrays
Inventor: COOLEY MICHAEL E
IPC: H01Q19/13
Filed: 1998-07-08
Abstract: A method and apparatus  for  shaping  reflected radio frequency signals includes geometrically shaping a reflector surface  (14)  of an antenna  (12)  to focus the beam, and reflectively shaping the reflector surface with phasing elements  (38)  that emulate geometric shaping to configure the beam (26) to a predetermined shape.  In the preferred  embodiment,  the  antenna   (12) comprises  a geosynchronous satellite antenna  (12)  conveying signals from a wave guide horn  (73)  to or from a predetermined geographic area  (28)  on earth.   The use of parabolic-approaching surface of reflectarray phasing elements for shaping the beam substantially improves the beam pattern bandwidth over the performance of previously known shaped beam reflectarrays.
Patent CA-2244334-A1 (CA)
Inventor: ISHII KENICHI
IPC: H04L12/28
Filed: 1998-07-29
Abstract: Méthode de sélection de canal pour système de communication sans fil, permettant à une station sans fil de sélectionner un canal sans fil dynamiquement, même lorsque les canaux sans fil sont en nombre insuffisant, la sélection se faisant parmi un certain nombre de canaux sans fil prévus pour le système de communication sans fil. La méthode comprend  les étapes suivantes : rechercher un canal (202) en vérifiant s'il y a un des canaux sans fil qui n'est pas utilisé par les autres stations sans fil du système; sélectionner un canal sans fil (207) commun parmi les canaux sans fil occupés par les autres stations sans fil, cela après avoir établi (205) que chacun des canaux sans fil était occupé par une des autres stations sans fil à l'étape de la recherche d'un canal; et établir la liaison sans fil en partageant le canal sans fil sélectionné à l'étape de la sélection de canal.
Patent CA-2244337-A1 (CA)
Title: Encryption processor with shared memory interconnect
Inventor: O'CONNELL CORMAC M
IPC: G06F13/36
Filed: 1998-07-30
Abstract: An encryption chip is programmable to process a variety of secret key and public key encryption algorithms. The chip includes a pipeline of processing elements, each of which can process a round within a secret key algorithm. Data is transferred between the processing elements through dual port memories. A central processing unit allows for processing of very wide data words, from global memory in single cycle operations. An adder circuit is simplified by using plural relatively small adder circuits with sums and carries looped back in plural cycles. Multiplier circuitry can be shared between the processing elements and the central processor by adapting the smaller processing element multipliers for concatenation as a very wide central processor multiplier.
Patent CA-2244446-A1 (CA)
Title: Signal processor for reducing undesirable signal content
Inventor: YU LI
IPC: H03H17/02
Filed: 1998-07-31
Abstract: A signal processor for reducing undesirable signal content reduces the undesirable signal content by exaggerating the undesirable signal content and then using this exaggerated undesirable signal and adaptive filter means to estimate the undesirable content in the signal and then substantially removing it from the signal. The signal processor includes a signal mapping means for exaggerating the undesirable signal content; and an adaptive filter means for reducing the undesirable signal content using the exaggerated undesirable signal content.
Patent CA-2246128-A1 (CA)
Title: Hanging data binder
Inventor: LONG ROBERT J
IPC: B42F15/00
Filed: 1998-08-31
Abstract: A hanging data binder is provided for a stack of paper.  The stack of paper is contained between two end pieces that secure the flexible posts passing through the stack.  The end pieces include retractable hooks that serve to secure the flexible posts and provide hooks for the hanging data binder.  The retractable hooks are slid outwardly to release the flexible posts and inwardly to store the hooks.
Patent CA-2246733-A1 (CA)
Inventor: THIM LARS
IPC: C07K14/605
Filed: 1997-02-27
Abstract: Cette invention se rapporte à un peptide visant à réduire l'appétit ou à une fraction de composition contenant ledit peptide réducteur d'appétit et utile pour le traitement de l'obésité et du diabète sucré non insulino-dépendant.
Patent CA-2253427-A1 (CA)
Title: Plastic blow molded container
Inventor: SLAT WILLIAM A
IPC: B65D1/02
Filed: 1997-05-06
Abstract: A plastic blow molded container (10) includes a hollow body portion (11), an upper dispensing end (14) having a dome (15) and spout (16), and a lower freestanding base (18). The container includes a main layer (19) of virgin polyethylene terephthalate that defines the upper dispensing end (14) and partially defines the hollow body portion (11) and the lower freestanding base (18), and the container also includes a gas barrier liner (20) that cooperates with the main layer (19) to define the freestanding base (18) and at least a portion of the body portion (11). The gas barrier liner (20) has an upper end (21) located below the dispensing end (14) and has a wall thickness that is less than 0.25 of the adjacent wall thickness of the polyethylene terephthalate main layer (19).
Patent CA-2254786-A1 (CA)
Inventor: BUCKNER NATHAN A
IPC: H02K15/095
Filed: 1997-05-20
Abstract: Stator coil lead wires (S1, F1) are coursed along complex, circuitous paths on the end of a stator core (30) and trimmed at a precise predetermined distance from the stator core (30). Improved end effector wire-guiding tooling members (60, 62) are provided in place of conventional gripper jaws to permit the lead wires to be coursed along complex, circuitous paths. In addition, an improved lead pull assembly (100), improved temporary wire clamps (32), and a wire former assembly (300) are provided.
Patent CA-2255713-A1 (CA)
Title: Hydrotalcite sulfur oxide sorption
Inventor: ALBERS EDWIN W
IPC: C10G32/00
Filed: 1997-06-19
Abstract: Hydrotalcite-like materials are stable in the crystalline oxide structure and essentially reversible in anion exchange. A novel process of sulfur oxide sorption is provided utilizing these hydrotalcite materials as contact solids. Large crystalline sheet materials having increased sorption of SO x are provided by incorporation of certain organic acid anionic species to modify the hydrotalcite/brucite structure. Typical industrial applications include sulfur removal from fluid catalyst cracking process, cold-side combustion gas sulfur abatement and cleaner coal gasification.
Patent CA-2256416-A1 (CA)
Title: High data rate cdma wireless communication system
Inventor: TIEDMANN EDWARD G JR
IPC: H04W84/18
Filed: 1997-05-28
Abstract: A method and apparatus for high rate CDMA wireless communication in which a set of individually gain adjusted subscriber channels are formed via the use of a set of orthogonal subchannel codes (Wi) having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded (134) and sequence repeated before being modulated with one of the subchannel codes, gain adjusted (152, 154, 156, 158), and summed (160) with data modulated using the other subchannel codes. The resulting summed data is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission.
Patent CA-2261176-A1 (CA)
Title: Apparatus and method for selectively making longitudinal perforations on web materials
Inventor: HARROD JIMMIE A
IPC: B26D5/02
Filed: 1998-04-20
Abstract: A web (11) perforating apparatus (10) comprising: a first and second perforator wheels (21, 22) mounted on stationary axes (26, 27) and spaced from each other along a predetermined path and in alignment with each other; first and second anvil cylinders (44, 45) spaced from each other along the path for cooperation with the wheels (21, 22) each cylinder having a raised (37) and a depressed portion (34), and a movable axis (35, 36). The cylinders are rotated about the axes (35, 36) synchronously with the web movement, and the cylinders (44, 45) may be selectively moved toward and away from the perforator wheels (21, 22).
Patent CA-2261531-A1 (CA)
Title: Seal active clearance control system for gas turbine stationary blade
Inventor: HAGI NAOKI
IPC: F02C7/28
Filed: 1999-02-15
Abstract: A clearance control system for a turbine seal, which optimizes a clearance by controlling the change in the clearance during a run due to a thermal elongation by cooling the sealing air.      The air from a compressor is cooled by a cooler 12 and is guided via an outer shroud 22 and a tube 28 in a stationary blade 21 into a cavity 26 in an inner shroud 23.      The air flows through a space 34 from a seal portion 36 to the outside and through a seal ring 25 and a space 35 from a seal portion 37 to the outside to seal the inner side of the inner shroud 23 from a hot combustion gas. A clearance .delta.H between a stationary portion and a rotary portion changes with a thermal elongation. A clearance measuring sensor 14 monitors the clearance .delta.H without intermission. When the clearance .delta.H is large; the control unit 10 opens the flow regulator valve 11 to cause the air to bypass the cooler 12. When the clearance .delta.H is small, the control unit 10 closes the valve 11 to control the thermal elongation so that the clearance .delta.H may be optimized at all times. As a result, the sealing performance can be improved to avoid the contact.
Patent CA-2262971-A1 (CA)
Title: Dryer vent elbow and method of assembly
Inventor: TUGGLE W GREGORY
IPC: D06F58/04
Filed: 1999-03-03
Abstract: An elbow for use in connecting the exhaust vent of a clothes dryer to an exhaust duct. The elbow having a depth equal to or less than the exhaust duct diameter while maintaining a constant exhaust airflow velocity. Preferably, the elbow comprises a rectangular portion connected to the dryer exhaust vent and an adapter portion extending from the rectangular portion and connecting to the exhaust duct.
Patent CA-2265285-A1 (CA)
Title: Roof construction
Inventor: RICKMAN PAUL DOUGLAS
IPC: E04B7/06
Filed: 1999-03-11
Abstract: The invention relates to a roof construction, assembled from aluminium alloy extrusions and sections which may be cut on site to the appropriate dimensions. There is a ring beam, made from a channel and a ridge member in the form of a central extruded aluminium alloy central box member, the channel tend member being essentially of the same section. Thus a relatively small number of different extrusions are required.
Patent CA-2267460-A1 (CA)
Inventor: FRANK STEPHAN
IPC: A47J31/08
Filed: 1999-03-29
Abstract: A filter-paper insert for a filter holder for producing brewed drinks such as coffee or tea. The filter-paper insert comprises at least one hollow chamber that is closed on all sides and is filled with a flavour carrier for the drink. The hollow chamber is formed by an additional filter-paper layer which is bonded to the filter-paper insert.      The flavour carrier may comprise a dry water-soluble powder, a dry powder pressed into tablet form, or a liquid flavour carrier contained in closed water-soluble and food-safe covering.
Patent CA-2269074-A1 (CA)
Title: Immunotherapy and improved vaccines
Inventor: WANG BIN
IPC: A61K39/00
Filed: 1997-10-23
Abstract: Improved vaccines which include a nucleotide sequence that encodes IL-12, GM-CSF, IL-1, TNF-.alpha., TNF-.beta., IL-2, IL-4, IL-5, IL-10, IL-15, IL-18, and/or BL-1 operably linked to regulatory elements are disclosed. The improved vaccines include DNA vaccines, recombinant vaccines for delivering foreign antigen and live attenuated vaccines. Methods of immunizing individuals are disclosed. Pharmaceutical compositions comprising nucleic acid molecules that encode one or more immunomodulatory proteins selected from the group consisting of IL-12, GM-CSF, IL-1, TNF-.alpha., TNF-.beta., IL-2, IL-4, IL-5, IL-10, IL-15, IL-18, and BL-1 are disclosed. An immunomodulatory protein, BL-1, and nucleic acid molecules that encode BL-1 are disclosed. Methods of making and using BL-1 are disclosed.