baber/WOPTO huggingface dataset:
Patent CA-2265065-A1 (CA)
Title: Liquid-absorbent polymer and gelatinoid product
Inventor: ANTRIM RICHARD L
IPC: C08J3/24
Filed: 1999-03-08
Abstract: Disclosed are a liquid-absorbent polymer and a substantially clear gelatinoid product. The liquid absorbent polymer comprises a saponified graft copolymer of starch and a polynitrile species, such as polyacrylonitrile. In accordance with the disclosed invention, the liquid-absorbent polymer is prepared from a derivatized starch, the derivatized starch having a degree of substitution sufficient to substantially inhibit starch-starch interactions in the gelatinoid product formed upon mixing of the polymer with liquid.      Preferred starches have a degree of substitution (DS) of at least about 0.01. Upon saponification of the liquid-absorbent polymer and placing of the polymer into absorbent contact with a liquid, a gelatinoid product will be formed. The gelatinoid product thus formed will have a substantially homogeneous index of refraction, and thus will be substantially clear.
Patent CA-2267024-A1 (CA)
Inventor: WHITE KEVIN T
IPC: G02B6/44
Filed: 1999-03-26
Abstract: A mixture of two water receptive agents. One of the water receptive agents is a mixture of two distinct superabsorbent substances, at least one of the superabsorbent substances is characterized by a very fast swelling rate whereby it is operative to quickly block the flow of water, and another of the superabsorbent substances is characterized by a high gel strength whereby it is operative to inhibit wicking. The other of the water receptive agents is a water soluble or a hydrophilic resin for enhancing the performance of the superabsorbent substances.      An exemplary fiber optic cable (10) includes fiber optic cable components in the form of buffer tubes (25) having two co-extruded layers (26,27). Layer (26) is the mixture of the two water receptive agents.
Patent CA-2267435-A1 (CA)
Inventor: ZENG ZING
IPC: G01S15/86
Filed: 1999-03-29
Abstract: Ultrasound is used to determine, by echo ranging, the distance of objects in front of a user for allowing a visually impaired pedestrian to walk safely. A double circuit allows two simultaneous measurements. Distances measured are converted into human paces or steps. Then each ear of the human receives measurement information. The user can calibrate the apparatus for his or her own stride.
Patent CA-2268150-A1 (CA)
Title: Method of preparation of physostigmine carbamate derivatives from eseretholes
Inventor: LEE THOMAS B K
IPC: C07D487/04
Filed: 1997-07-21
Abstract: This invention relates to a process for the preparation of a product of formula (I), wherein R is loweralkyl; R1 is hydrogen, loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralkyl; R2 is loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralkyl; or R1 and R2 taken together with the nitrogen atom to which they are attached form a group of formula (Ia), wherein Y is hydrogen or loweralkyl and Z is hydrogen, loweralkyl, halogen, loweralkoxy or hydroxy; X is loweralkyl, loweralkoxy, halogen or trifluoromethyl; and m is 0, 1 or 2; or a pharmaceutically acceptable salt thereof; which process comprises: (a) contacting a compound of formula (II) as defined herein with fortified hydrogen bromide to afford a compound of formula (III) as defined herein; (b) contacting the reaction mixture containing a compound of formula (III) with either: (1) an isocyanate of formula R1NCO, or (2) with a compound of formula (IV) as defined to afford a compound of formula (V) as defined herein, and (c) contacting the reaction mixture containing the compound of formula (V) with an amine of the formula R1R2NH herein in the presence of a carboxylic acid of the formula R5COOH and forming and isolating the product of formula (I).
Patent CA-2271004-A1 (CA)
Inventor: GAO YUN
IPC: A61K9/00
Filed: 1997-11-07
Abstract: A method is disclosed for the preparation of optically pure isomes of formeterol, especially the (R,R)- and (S,S)-isomer, by the reaction of an optically pure 4-benzyloxy-3-formamidostyrene oxide with an optically pure 4-methoxy-.alpha.-methyl-N-(phenylmethyl)benzeneethanamine followed by debenzylation. Useful intermediates in the process are also disclosed, as is the novel L-tartrate salt of R,R-formoterol.
Patent CA-2271135-A1 (CA)
Title: Nucleosides
Inventor: JOHANSSON NILS-GUNNAR
IPC: C07D473/18
Filed: 1997-11-12
Abstract: Mixed esters of antiviral nucleosides such as compounds of Formula (I), where B is natural or unnatural nucleotide base, X is O or CH2, Y and Z are each H, or together form a bond, or Y is methylene or -CH(OH)- and Z is a bond thereto; n is 0 or 1; one of R1 and R2 is the acyl residue of an aliphatic amino acid and the other is -C(=O)C5-C21 saturated or monounsaturated alkyl; and pharmaceutically acceptable salts thereof have advantageous pharmacokinetic and other properties.
Patent CA-2271995-A1 (CA)
Inventor: KUMAR VINOD
IPC: H04W16/32
Filed: 1998-09-08
Abstract: The invention concerns a base station controlling communications carried out in a digital and cellular radiocommunication network cell (17). The invention is characterised in that said base station comprises a set of at least two transmission and reception relays (13) geographically distributed in said cell, each of said relays capable of transmitting signals to mobile stations present in one said cell zone, and of receiving signals transmitted (12) by said mobile stations, in said zone; and a concentration centre (15), processing the signals (14) received by each of said relays (13), and delivering to each of said relays signals (14) to be transmitted. Moreover, the base station selectively assigns to each communication with a mobile station (11) a set of at least two said relays (23). The invention also concerns a corresponding method.
Patent CA-2273983-A1 (CA)
Inventor: WALSH DAVID A
IPC: C07D211/34
Filed: 1996-12-12
Abstract: Derivatives of 9-deazaguanine are prepared by reacting an aldehyde or ketone with a dialkylaminomalonate to form the corresponding enamine. The enamine is then reacted with a base to form a cyclic pyrrole. The cyclic pyrrole is reacted with an urea compound or a derivative of carbamimidoic acid to provide a protected guanidino compound. The guanidino is converted to the desired 9-deazaguanine derivative by reacting with trifluoracetic acid or with an alkoxide or hydroxide followed by neutralization with an acid.
Patent CA-2274072-A1 (CA)
Title: Surface treatment of steel or a nickel alloy and treated steel or nickel alloy
Inventor: SCHENKER ERHARD
IPC: C23C22/68
Filed: 1997-12-08
Abstract: The invention relates to a method for surface processing of steel and/or nickel alloy. It also relates to the use of said method and steel or nickel alloy processed using such a method. Processing involves the use of peroxide or a water-peroxide mixture or a peroxide solution.
Patent CA-2278517-A1 (CA)
Inventor: PFEMETER ALFRED
IPC: C04B28/26
Filed: 1998-01-13
Abstract: The invention concerns a lightweight material containing blown perlite, alkali silicates and optionally additives of hardeners for aqueous alkali silicates, the expanded perlite having a grain size of between 0.8 and 6 mm. The material further contains a water-repelling agent, and the apparent densities range from 60 to 500 kg/m3.
Patent CA-2283559-A1 (CA)
Title: Improved memory control system for microprocessor
Inventor: CMELIK ROBERT F
IPC: G06F12/10
Filed: 1997-08-11
Abstract: A memory controller for a microprocessor including apparatus to both detect a failure of speculation on the nature of the memory being addressed, and apparatus to recover from such failures.
Patent CA-2287434-A1 (CA)
Inventor: COTTER JONATHAN P
IPC: F16F9/43
Filed: 1999-10-26
Abstract: A gas spring has a casing defining a chamber constructed to be filled with a gas under pressure, a piston rod received in the chamber for reciprocation between extended and retracted positions and having a free end projecting beyond the casing, a gas fill passage formed in the casing and through which pressurized gas is admitted into the chamber and a filler valve disposed in the fill passage to selectively permit the flow of gas through the fill passage. The filler valve has a body with a passage formed therethrough, a valve seat defined in the passage between opposed ends of the body and a poppet received in the passage and engageable with the valve seat to selectively permit gas flow through the filler valve and hence through the fill passage of the gas spring casing. The filler valve body preferably has mechanical threads formed in its exterior and constructed to be mated with complementary threads in the gas fill passage to firmly and releasably hold the filler valve within the fill passage. Preferably, an O-ring carried by the valve body provides a gas-tight seal between the valve body and the fill passage within a generally cylindrical portion of the fill passage. The valve body preferably has one or more integral tabs which retain the poppet within the valve body in assembly.
Patent CA-2288432-A1 (CA)
Inventor: LORENZ GISELA
IPC: C12N15/09
Filed: 1998-04-16
Abstract: The invention relates to a method for producing fungicide-tolerant plants by expressing a fungicide-binding antibody therein.
Patent CA-2290135-A1 (CA)
Inventor: VALENTIN LUC
IPC: G01N27/447
Filed: 1999-03-11
Abstract: The invention concerns a multiple capillary electrophoresis device comprising a plurality of juxtaposed capillaries (2a), means (4, 5) for generating inside the capillaries (2a) an electric field ensuring electrophoretic migration, at least one source for emitting a beam designed to excite the molecules at the capillary output, means for detecting the fluorescence of the molecules excited by said beam. The invention is characterised in that it comprises means (5, 7) for generating another electric field, called confinement electric field, which is regularly distributed around said capillaries and which is substantially parallel thereto, said electric field confining the electrophoretic migration field and forcing the molecules to move substantially without divergence in the axis of said capillaries (2a).
Patent CA-2295708-A1 (CA)
Title: Method for block polymer synthesis by controlled radical polymerisation
Inventor: CORPART PASCALE
IPC: C08G/
Filed: 1998-06-23
Abstract: The invention concerns a method for polymerising block polymers of general formula (I) which consists in contacting: an ethylenically unsaturated monomer of formula: CYY'(=CW-CW')¿a?=CH¿2?; a precursor compound of general formula (II); a radical polymerisation catalyst.
Patent CA-2297196-A1 (CA)
Title: Device for self-cleaning of valve seats in alumina obtaining installations
Inventor: GONI USABIAGA JUAN JOSE
IPC: F16K31/50
Filed: 1998-05-26
Abstract: This valve is applicable in conduction of bauxite in pipes and is meant to allow the self cleaning of the valve with the aid of a locking cap which connects the drive crown and the valve shaft, causing the rotation of said crown to be transmitted to the valve shaft, which as it rotates rubs on the valve seats, thus removing the depositions.
Patent CA-2297731-A1 (CA)
Title: Method and apparatus for handling and drying a pulp web
Inventor: SAIRANEN PAAVO
IPC: D21F5/18
Filed: 1998-08-17
Abstract: A method and apparatus achieve a more sustainable lift of a wet or heavy pulp web from a pulp machine to the topmost drying level of a pulp drying, allowing the speed of production to be increased and runnability problems to be minimized. The pulp web is lifted from the last press of the pulp machine to the topmost of the drying levels of the pulp dryer by supporting the web on a support wire. The pulp may be passed through the topmost drying level, and one or two other levels, also supported by a support wire, but in subsequent levels the pulp web is preferably supported only by an air cushion. In each level drying gas is blown toward the pulp web (preferably from both above and below the web) to effect drying, and the web passes around turning rolls between each drying level to enter the next, lower, drying level. The support wire may be of metal or plastic, and has a texture significantly coarser than the texture of wires commonly used in pulp machines.
Patent CA-2298319-A1 (CA)
Title: Extruded permanent form-work for concrete
Inventor: MORIN CECIL
IPC: E04B2/86
Filed: 2000-02-09
Abstract: A set of extruded panels is provided which can be assembled on site to create a permanent form-work for concrete. The set includes inside and outside extruded side wall panels which are arranged to be connected edge to edge to form inside and outside walls. Longitudinally spaced connecting wall panels span between the inside and outside walls at spaced positions across the width of the walls to hold the walls apart and define a hollow interior therebetween including a plurality of interconnected cells with a plurality of holes for communication of concrete and reinforcing bars between each cell and the next. Each connecting wall panel has T-shaped connectors at each edge for attachment to corresponding C-- shaped receptacles on the side wall panels. Rigid foam insulation is inserted at the outside wall. The inside wall panels are arranged to support without bowing cast concrete poured into the interior within each cell and a support wall identical to the connector walls spans between the inside and outside walls to hold the panels against bowing.
Patent CA-2300009-A1 (CA)
Title: Polyaniline-containing solution and method for preparing the same
Inventor: HO KO-SHAN
IPC: C08G73/02
Filed: 2000-03-06
Abstract: A process for producing a conductive polyaniline is disclosed. The process includes mixing an aniline monomer, a water-immiscible organic solvent, at least one protonic acid doping agent and water together to form an emulsion via agitation, stopping agitation to allow the emulsion to separate into an aqueous phase and a non-aqueous phase, separating the non-aqueous phase from the aqueous phase, and adding an oxidation agent into the non-aqueous phase to carry out polymerization. A non-aqueous in-situ formed transparent polyaniline solution prepared by the process is also disclosed.
Patent CA-2302991-A1 (CA)
Title: Holding device for rods and the like
Inventor: PAINCHAUD MAURICE
IPC: A45B11/00
Filed: 2000-03-23
Abstract: The present invention is a holding device that can be used to easily and simply mount and hold the cylindrical post of a large protecting umbrella or parasol at various angles to a variety of openwork guardrails or railings on an outside patio or on a balcony. The tightening of securing bolts of the device simultaneously anchors the holding device to the guardrails and grasps the cylindrical post within symmetrical jaws of the device.
Patent CA-2305506-A1 (CA)
Inventor: DUEZ JOSE
IPC: C08J5/00
Filed: 1998-10-15
Abstract: La bande anti-friction pour rasoir jetable de l'invention est obtenue par extrusion à partir d'un mélange polymère comprenant un matériau polymère insoluble et l'oxyde de polyéthylène. Elle a un coefficient de frottement dynamique (KD) initial de l'ordre de ou inférieur à 0,2. Le mélange à extruder comporte exclusivement, comme oxyde de polyéthylène, un produit ayant un poids moléculaire moyen supérieur à 3,5 millions. De préférence, elle est obtenue par extrusion à partir d'un mélange comprenant du polystyrène et de l'oxyde de polyéthylène d'une poids moléculaire moyen supérieur à 4 millions, notamment un seul oxyde de polyéthylène d'un poids moléculaire supérieur à 7 millions. L'invention concerne également une tête de rasage sur laquelle est fixée par soudure ultrasons la bande anti-friction précitée.
Patent CA-2310837-A1 (CA)
Title: Method of forming a flexible mold and resulting article
Inventor: CORRY ARTHUR A
IPC: B29C33/38
Filed: 2000-06-07
Abstract: A method of forming a flexible mold and resulting article is provided where a model having the contour of the article to be molded is provided. The model is partially encapsulated within a flexible and substantially liquid impervious layer. The combined model and liquid impervious layer is immersed into a curable liquid composition and handle members are inserted into the curable composition liquid composition. The curable liquid composition is cured having the handles embedded within the composition and subsequent to curing, forms a solid flexible mold encompassing structure.    Handle members are actuated to release the model from the layer to form the flexible mold for the article to be produced.
Patent CA-2311904-A1 (CA)
Title: Long lasting deck product
Inventor: GUSLER JAY
IPC: E04F15/10
Filed: 2000-06-19
Abstract: A deck product comprising a composite and a base. The composite covers the base and the base and the composite are removably attached
Patent CA-2314070-A1 (CA)
Title: Removable doctor blade holder
Inventor: GOODNOW RONALD F
IPC: D21G3/00
Filed: 1998-12-18
Abstract: A doctoring apparatus (10) for a roll (12) in a papermachine includes a doctor blade (14), a blade holder (16) for applying the doctor blade to the surface of the roll, and a doctor back (18) for supporting the blade holder. The blade holder is releasably secured to and removable from the doctor back for cleaning and repair outside of the papermachine.
Patent CA-2319180-A1 (CA)
Title: Improved papermaking processes
Inventor: LAURILA-LUMME AULI
IPC: D21H23/10
Filed: 1998-06-25
Abstract: The invention relates to papermaking processes wherein calcium carbonate is included in a pulp suspension. The dissolution of the calcium carbonate in the papermaking system is prevented or substantially retarded by the introduction of carbon dioxide to said pulp suspension in connection with subjecting said calcium carbonate in said papermaking system to pH conditions of about 8 or lower. The invention also provides processes for the production of paper or board in papermaking systems wherein solid calcium carbonate is present as a filler and/or pigment.
Patent CA-2319975-A1 (CA)
Title: Universal joint having hemispherical cup-shaped yoke and exterior, lubricating ring
Inventor: CORNAY PAUL J
IPC: F16D3/26
Filed: 1990-06-28
Abstract: A universal joint that includes a ring having a lubricant channel for allowing lubricant flow. A yoke is disposed within the ring. The universal joint further includes a shaft and pins pivotally interconnecting the yoke and the shaft to the ring. A number of bearings are disposed in the ring in fluid contact with the lubricant channel. The lubricant channel is non-continuous, extending less than 360 degrees around the ring such that lubricant entering a first lubricant port must travel through the entire length of the lubricant chancel before exiting through a second lubricant port.
Patent CA-2324285-A1 (CA)
Title: Coding sequence polymorphisms in vascular pathology genes
Inventor: DALEY GEORGE Q
IPC: C12Q1/6827
Filed: 1999-03-26
Abstract: The invention provides nucleic acid segments of the human genome, particularly nucleic acid segments from the coding region of a gene, including polymorphic sites. Allele-specific primers and probes hybridizing to regions flanking or containing these sites are also provided. The nucleic acids, primers and probes are used in applications such as phenotype correlations, forensics, paternity testing, medicine and genetic analysis.
Patent CA-2326865-A1 (CA)
Title: An apparatus and method of enhancing transmit diversity
Inventor: SONI ROBERT ATMARAM
IPC: H04B7/06
Filed: 2000-11-24
Abstract: Disclosed is a method and apparatus for enhancing diversity gain without reducing data rate by increasing the number of antenna elements and configuring the antenna elements for improving signal-to-noise ratio at a receiver. The antenna array comprise a first antenna group with at least two antenna elements and a second antenna group with at least one antenna element. The first and second antenna groups are spaced approximately ten carrier wavelengths or more apart from each other, and the antenna elements belonging to the first antenna group are spaced approximately a half carrier wavelength or less apart from each other. A plurality of data streams is generated from a signal and used to produce a first and second plurality of representative data streams. Each of the first plurality of representative data streams is phase-shifted and encoded using different orthogonal codes, and each of the second plurality of representative data streams is encoded using different orthogonal codes, wherein a different orthogonal code is used to encode representative data streams in the first and second plurality of representative data streams generated from a same data stream, and the first and second plurality of representative data streams allow for the plurality of data streams to be recovered at a receiver after encoding. The encoded and phase shifted first plurality of representative data streams being transmitted over the first antenna group, and the encoded second plurality of representative data streams being transmitted over the second antenna group.
Patent CA-2327597-A1 (CA)
Title: Lithium secondary battery and transportation method thereof
Inventor: NEMOTO HIROSHI
IPC: H01M10/50
Filed: 2000-12-05
Abstract: A lithium secondary battery includes an electrode body obtained by minding or laminating a positive electrode and a negative electrode via a separator, and a non-aqueous electrolyte solution. The battery satisfies the following Equation (1): E0/Cp + T1 = T2 <t ... (1) where E0 (J/g) is energy quantity per unit weight at the tine of full charging of said battery; Cp (J/°C~g) is the specific heat of said battery; T1 (°C) is a normal use temperature of said battery;      T2 (°C) is the highest elevated temperature of said battery; and t (°C) is the lowest temperature at which said battery falls into an unsafe state.
Patent CA-2330828-A1 (CA)
Title: Mobile cruiser machine for forestry applications
Inventor: ALSTER L GREGORY
IPC: G01C15/00
Filed: 2001-01-11
Abstract: A mobile machine for determining information at a forestry site. The mobile machine includes a gimbal base mounted on the mobile machine, a rotating laser beam range detector mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane, a position determining system mounted on the mobile machine, and a slope determining system located on the mobile machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile machine.
Patent CA-2337182-A1 (CA)
Title: Systeme de repos
Inventor: JENKINS CLIVE CHARLES
IPC: A61G7/065
Filed: 1998-07-09
Abstract: L'invention porte sur un système de repos destiné à être utilisé notamment, mais pas exclusivement, pour limiter le mouvement d'une personne ou d'un animal au repos. Cette invention concerne notamment les personnes souffrant de troubles neurologiques ou ayant subi des interventions chirurgicales longues qui impliqueraient d'empêcher tout mouvement excessif. D'autre part, des patients souffrant de lésions à la colonne vertébrale ou des individus souffrant de brûlures importantes, ou encore des nouveau-nés pouvant être touchés par le syndrome de la mort soudaine du nourrisson pourraient également profiter de ce dispositif de repos permettant de limiter les mouvements.
Patent CA-2337728-A1 (CA)
Inventor: BROOKS STANLEY J
IPC: H05B37/02
Filed: 2001-02-22
Abstract: A programmable control system includes a control module having one or mo re inputs to which an external sensor device may be connected, and one or more outputs to which an external actuator device capable of manual override and providing a  status feedback signal may be connected. One or more signal inputting devices are provided which a human operator can utilize to enter a learn mode. A display can be used to indicate a mode of the control system, and a memory can be used to store the characteristics of an external sensor device connected to an input and an association between inputs and outputs. A controller/processor has both a learn mode and  a run mode. The control module may interface with external actuator devices such a s circuit breakers located in one or more panels via an intelligent control bus and an  address module.