baber/WOPTO huggingface dataset:
Patent CA-2227090-A1 (CA)
Inventor: BORZA MICHAEL ANDREW
IPC: A61N1/378
Filed: 1998-01-15
Abstract: In the design of transcutaneous energy transfer devices variation in spacing between the coils results in energy transfer efficiency changes. These changes may have other causes. It is proposed to use an autotuning circuit and a voltage control circuit in cooperation with feedback from the internal coil in order to better maintain energy transfer levels as desirable. The feedback is typically provided via IR communication;  however, when skin is highly pigmented, IR communication is inefficient. A method and system for using RF signals to accomplish the communication is disclosed.
Patent CA-2227939-A1 (CA)
Inventor: CULPEPPER PATRICK M
IPC: E04F13/18
Filed: 1998-01-27
Abstract: A composite interlocking vinyl or other veneer siding having an elongated insulating member bonded to a vinyl panel with a permanently flexible adhesive that is compatible with both vinyl and insulation material and does not harden.  The insulating member is configured such that a front face of the insulating material exactly coincides with the profile of the front face of the vinyl member.  The insulating member forms a shallow shelf at an upper edge of the insulating member and an adjacent insulating member forms another shelf to overlap the adjacent shallow shelf to form a shiplap seal when assembled.  Horizontal and vertical edges of the vinyl siding and insulating member are configured to overlap when mounted.
Patent CA-2229713-A1 (CA)
Inventor: KUNZ PASCAL
IPC: G01R31/28
Filed: 1998-02-16
Abstract: A wafer (10) is described comprising several integrated optoelectronic circuits of a first type (11), such circuits of the first type each comprising electronic modules (13) and at least a first photodiode (14). Said wafer (10) is characterised in that it further comprises at least one integrated optoelectronic circuit of a second type (21) comprising electronic modules (23), at least one second photodiode (24) and at least one bonding pad (25) intended to be connected to an external measuring apparatus, said at least one bonding pad (25) being superposed onto said at least one second photodiode (24) so that said at least one circuit (21) of the second type  may  be  used  as  a  circuit  for  verifying  the manufacturing of said wafer.
Patent CA-2233633-A1 (CA)
Inventor: MARUSZAK JANUSZ
IPC: H04L9/30
Filed: 1998-03-30
Abstract: A voice mail system computer network gateway server is disclosed. The server interfaces with a voice mail system, and exchanges voice mail messages with other gateway servers and voice mail systems using a computer network. The server includes a routing table for converting voice mail system addresses to computer network addresses. The routing table may be updated and exchanged between interconnected servers. As well, the server may broadcast received messages to multiple recipients. Methods used by such server are also disclosed. Messages exchanged may be encrypted. A method and system for exchanging cryptographic keys to facilitate such encryption are also disclosed.
Patent CA-2236806-A1 (CA)
Title: Powderable reactive resin compositions
Inventor: WHITE PETER DRUMMOND BOYS
IPC: C08G59/06
Filed: 1996-11-18
Abstract: A reactive resin composition, which is a fusible, solid optionally foamable, heat curable, epoxy functional reaction product with a Kofler Heat Bank melting point of not less than 55 °C, formed by mixing together: (A) epoxy resins of epoxy group containing compounds; (B) an amine solidifying system present in insufficient quantities to cause gelation after all the amino hydrogen atoms are consumed by epoxy groups, under the reaction conditions chosen for (A) and (B), and which yields a product with a Kofler Heat Bank melting point of greater than 55 °C and less than 120 °C and melting point stability of at least six months normal workshop temperatures; (C) a hardener system for (A) and the reaction product of (A) and (B) which is different from (B) and remains substantially unreacted under the conditions of reaction chosen for (A) and (B) with (A) and (B) and which is of low reactivity at normal workshop temperatures in the final solid epoxy formulation; optionally, (D) an expanding agent which is of low reactivity under the conditions of reaction chosen for (A) and (B) and which is of low reactivity at normal workshop temperatures in the final solid epoxy formulation; and optionally, (E) other additives that may be required to modify the physical properties of the cured or uncured composition.
Patent CA-2238209-A1 (CA)
Title: Toothbrush
Inventor: WATANABE TAKAYUKI
IPC: A46D1/00
Filed: 1998-05-22
Abstract: In the case of conventional toothbrushes whose bristles have all needlelike tapering tips, the bristles near tips becomes too flexible because they are too thin. On the other hand, in the case of toothbrushes whose bristle ends being rounded or hemispherical, it is difficult to go into the spaces between teeth or boundary spaces between teeth and gums. Thus, it is difficult for conventional toothbrushes to clean up in every nook and corner in the mouth. A  toothbrush comprising a block head having brush portion, a handle and a neck portion connecting said block head with the handle, wherein a part of said tufts of the brush portion are made up of filament with polygonal cross section, and the rest of the tufts are made up of sheath-core structural filament whose core material is covered with sheath material so that the cross section thereof is concentric circles.
Patent CA-2240744-A1 (CA)
Title: An applicator
Inventor: BUNYAN GLEN WALTER
IPC: A47G19/18
Filed: 1998-06-17
Abstract: An applicator to deliver viscous liquids such as cream, mayonnaise or mustard.  The applicator includes a cylinder assembly (25) which receives a piston (4). The cylinder assembly (25) separates a pair of chambers (26, 27). The piston (4) includes a one-way valve (3) which is resiliently deflectable from apertures (28) in the piston to provide for the flow of liquid from the chamber (26) to the chamber (24). An inlet extends to the chamber (26) while an outlet valve (1) communicates with the chamber (24).  This arrangement minimises hand pressure required by are operator to manipulate the applicator in delivering! the viscous liquid.
Patent CA-2241752-A1 (CA)
Title: Reverse inter-msc handover
Inventor: LAHTINEN LAURI
IPC: H04B7/185
Filed: 1996-12-17
Abstract: The GSM system includes a protocol for re-establishing a lost call. A problem occurs if the call is lost after an inter-MSC (MSC-A, MSC-B) handover, resulting in that the system does not know into which MSC the subscriber data of a mobile station (MS) has been updated. If the MSC has changed during the call, and the MS is no longer able to contact the cell served by the original MSC-A, the call will be lost. In the method according to the invention, the MSC serving the location area of the mobile station detects a start message (1') transmitted by the mobile station and containing the Last Location Area Identifier of the mobile station. Based on the Last Location Area Identifier, the second center MSC-B, which detects the start message (1'), determines the first center MSC-A in whose area the call was started. Following this, the second center MSC-B may establish a connection to the first center MSC-A. At this stage, the centers (MSC-A and MSC-B) reverse roles and the method proceeds as in a conventional inter-MSC handover. The method of the invention for establishing a connection may also be applied to a satellite system that uses the GSM system network structure.
Patent CA-2244494-A1 (CA)
Title: Tabletting of erythritol
Inventor: DE TROOSTEMBERGH JEAN-CLAUDE M
IPC: A23L27/30
Filed: 1998-08-04
Abstract: A process for preparing a composition suitable for use as an excipient for tabletting comprising the following steps is disclosed; a) mixing of erythritol and sorbitol in a dry form, b) heating up to a temperature where the mixed products are melted, c) cooling the product, d) milling the cooled product to obtain a composition having a desired particle size. Additionally tablets obtained after direct compression of an erythritol/sorbitol mixture are disclosed.
Patent CA-2244637-A1 (CA)
Inventor: GUMEDE HENRY NHLANHLA
IPC: B03D1/02
Filed: 1998-07-13
Abstract: The present invention provides a process for the recovery of base metal sulfides including chalcocite, chalcopyrite, pentlandite and platinum group metal bearing mineral ores. The process involves passing a slurry of the ore through a reagent conditioning stage wherein suitable activators, collectors, frothers and/or depressants are added, further conditioning the slurry with a non-oxidizing gas in a quantity conducive to the separation of the sulfide minerals from the remainder of the ore and subsequently subjecting the slurry to a final flotation treatment with a flotation gas having a higher oxygen content than the non-oxidizing gas. The non-oxidizing gas conditioning can be carried out prior to or after the reagent conditioning stage.
Patent CA-2244793-A1 (CA)
Inventor: SIELING FREDERICK W
IPC: E04D1/26
Filed: 1997-01-13
Abstract: This invention relates to a rectangular roofing shingle defined as a shingle unit (I) having front (9) and rear (10) stepped edges and having an undivided headlap portion (2) and a butt portion (3) horizontally divided into at least 4 dissimilarly shaped, space-separated, snaggle-toothed tabs (4-7) which are integral with, and extend from the bottom portion of said headlap and which are recessed from the side edges of said headlap; said shingle unit, having an overall length in inches approximately equal to from about 9 to about 12 inches multiplied by the number of tabs, is secured to a reinforcement strip (22) which is positioned to underlay said tabs, and from about 0.75 to about 5 inches of said adjoining headlap and which has a length equal to the overall length of the shingle unit.
Patent CA-2247017-A1 (CA)
Inventor: LUNA AMAURI ZANINI
IPC: B65D75/34
Filed: 1998-09-14
Abstract: A machine dish washing tablet comprising a bleaching system, a silicone and less than 10 wt% of surfactant.  A process is claimed for making this tablet and a pack is claimed for its storage and delivery.  The tablets according to the invention have quick dissolution times and are easy to prepare.
Patent CA-2247930-A1 (CA)
Inventor: STEMMER WILLEM P C
IPC: C12N15/74
Filed: 1997-03-20
Abstract: The invention provides a number of strategies for transferring and/or evolving gene(s) associated with cellular DNA uptake so that they confer or enhance DNAuptake capacity of a recipient cell. Evolution is achieved by recursive cycles of recombination and screening/selection. One such strategy entails evolving genes that confer competence in one species to confer either greater competence in that species, or comparable or greater competence in a second species. Another strategy entails evolving genes for use as components of a cloning vector to confer enhanced uptake of the vector. Other strategies entail evolving viral receptors, viruses, and genes that mediate conjugal transfer.
Patent CA-2249123-A1 (CA)
Inventor: CONN MARIE-LOUISE FRANCINE
IPC: B65D33/18
Filed: 1998-10-02
Abstract: A multiple-pocket envelope constructed of a flexible plastic, for accommodating multiple groups of documents for mailing. A smaller pocket is provided on the front of a larger pocket, the openings of both pockets being located at the top of the envelope. A flap is provided at a top of a back panel of the larger pocket, which flap may be folded down over, and affixed to the front of the smaller pocket to close the openings of both pockets.
Patent CA-2251961-A1 (CA)
Inventor: YASUE TAKAHARU
IPC: D06M15/333
Filed: 1997-04-18
Abstract: A first fiber treatment comprising a functional protein prepared by treating proteins such as collagen with a cross-linking agent and a solvent-base resin; a second one comprising the above functional protein and a water-base resin; a third one comprising a water-soluble organic substance having an average molecular weight of 100 to 20000 and a reactive modifier; a fourth one comprising the above functional protein and a reactive modifier; and products such as fibers and textile goods treated with one of the treatments.
Patent CA-2253157-A1 (CA)
Title: Flame-retardant thermoplastic molding compositions comprising aluminum hydroxide
Inventor: KLEINER HANS-JERG
IPC: C08K3/22
Filed: 1998-10-30
Abstract: The present invention relates to a thermoplastic polyester molding composition comprising aluminum hydroxide and obtainable by treating a mixture comprising from 60 to 90% by weight of a thermoplastic polyester and from 0 to 40% by weight of aluminum hydroxide at from 230 to 330°C under subatmospheric pressure, where from 0.9 to 1.2 mol of water is removed per mole of aluminum hydroxide used. The use of the novel molding composition for producing moldings is also described, as are moldings comprising the novel molding composition.
Patent CA-2254138-A1 (CA)
Title: Air intake system for an internal combustion engine
Inventor: FUESSER ROLF
IPC: F02M35/14
Filed: 1997-05-07
Abstract: The invention concern an air intake system for an internal combustion engine. The intaken air passes via an air filter (3) to the internal combustion engine. Within the intake passage an attenuation volume (5) is provided which acts as a Helmholtz resonator. The size of the attenuating volume is such that a given noise frequency range can be attenuated. To achieve optimum noise reduction at least a partial flow of air passes through the attenuation volume (5) and the size of the effective attenuation volume (5) through which the air passes can be varied by reversible switches and valves.
Patent CA-2256766-A1 (CA)
Title: Materials and methods for the immobilization of bioactive species onto polymeric substrates
Inventor: DRUMHELLER PAUL D
IPC: C12N11/08
Filed: 1997-06-02
Abstract: The present invention is directed to support members having surfaces that are rendered hydrophilic for use as a substrate for the immobilization of bioactive species thereon. The hydrophilic surfaces are chemically stable on the support member. The surfaces are also chemically variable to provide a variety of chemically functional groups for immobilization of bioactive species thereto. The surfaces comprise polymeric surfactants attached onto the surfaces of a support member and covalently cross-linked thereon to form a first layer. Hydrophilic polymers are then attached to the first layer on the support member to form a second layer thereon. The second layer is used to enhance the hydrophilicity of a support member as well as to provide a substrate for immobilizing bioactive species thereto. Methods for forming the first and second layers are also provided. In addition, methods for attaching bioactive substances to the hydrophilic polymers are provided.
Patent CA-2257756-A1 (CA)
Title: Method and apparatus for controlling formation of two-colour balls for a twisting ball display
Inventor: RICHLEY EDWARD A
IPC: G09F9/37
Filed: 1999-01-04
Abstract: An apparatus for fabricating bichromal balls includes a means for fabricating droplets from electrically conductive hardenable liquids. The liquids have different colors. A forward end of the hardenable liquids becomes unstable and breaks up into the droplets. Each droplet includes hemispheres of different colors. An RF signal generator produces electrical pulses which increase the instability of the forward end of the hardenable liquids.      A capacitance in the conductive liquids causes current to flow from the signal generator to the hardenable liquids.      A diameter of the droplets is reduced to form substantially spherical balls. Each of the balls includes hemispheres of different colors. The bichromal balls are collected.
Patent CA-2259171-A1 (CA)
Title: Microscope slide with removable layer and method
Inventor: FERGUSON GARY W
IPC: G02B21/34
Filed: 1997-06-27
Abstract: A slide (1) or observing material (4) under a microscope comprising a mounting surface (15) to receive material (4) for observation and a removable layer (2) on the mounting surface (4) formed with at least one opening (3) in the removable layer (5) to define at least one exposed region (6) on the mounting surface (15) for retaining material to be observed when the removable layer (12) is detached. The exposed region has definite boundaries and any material to be examined remaining on the slide is confined to be exposed region to facilitate examination of the slide by human visual identification or machine vision by making material easier to locate, by limiting material to regions appropriate for best observation (e.g. away from edges of the slide and coverglass), and by limiting the amount of material or area covered by material to permit quick and rigorous observation and analysis. A method for using slides according to the present invention is also disclosed.
Patent CA-2260362-A1 (CA)
Title: Procede pour l'examen d'acides nucleiques et kits d'examen
Inventor: OKA TAKANORI
IPC: C12Q1/6827
Filed: 1997-07-09
Abstract: Grâce à cette invention des mutations ou des polymorphismes géniques sont détectés, identifiés ou déterminés en toute sécurité par des procédures simples en un temps court, directement à partir de spécimens contenant ces mutations ou polymorphisme génétique, dans une quantité trace, à l'intérieur de régions spécifiques d'acides nucléiques cibles. Un procédé pour examiner les acides nucléiques consiste à amplifier une région spécifique d'un acide nucléique cible dans un spécimen, afin de préparer un ADN échantillon à deux brins, à ajouter une quantité excédentaire de cet ADN échantillon à un ADN standard marqué, constitué d'un acide nucléique à deux brins possédant un site capable de se fixer à un support en phase solide dans l'un des brins et une marque détectable sur l'autre brin, pour créer une hybridation compétitive, à détecter l'ADN standard marqué mentionné ci-dessus, ainsi reconstitué à l'aide de la marque détectable et du site capable de se fixer à un support en phase solide, et, partant, à déterminer le dégré de substitution des brins complémentaires entre cet ADN échantillon et cet ADN standard marqué, afin de détecter l'ADN cible qui est identique à cet ADN standard marqué contenu dans cet ADN échantillon. Ce procédé se caractérise en ce que la limite de détection de l'ADN cible qui est identique à l'ADN standard marqué contenu dans l'ADN échantillon est spécifiée au préalable et en ce que, dans l'étape d'hybridation compétitive, la quantité d'excédent de l'ADN échantillon devant être ajouté à l'ADN standard marqué est spécifiée en fonction de la limite de détection ainsi spécifiée. Cette invention se rapporte en outre à des kits d'examen pour détecter, identifier et déterminer des acides nucléiques portant des mutations ou des polymorphismes géniques en fonction du procédé d'examen ainsi décrit.
Patent CA-2260472-A1 (CA)
Title: Safety-catch linkers
Inventor: CZARNIK ANTHONY W
IPC: C07D295/215
Filed: 1999-01-27
Abstract: Safety-catch linkers and methods for use of safety-catch linkers in solid phase and combinatorial solid phase synthesis are provided.  Safety-catch linkers covalently bonded to solid supports are also provided.  The safety-catch linkers are stable to a wide variety of synthetic protocols so that substrates, such as amines, thiols and alcohols, are cleaved from the linkers under mild conditions. The safety-catch linkers are useful in solid phase synthesis and modification of natural products and other complex organic substrates.
Patent CA-2260794-A1 (CA)
Title: Film-nonwoven laminate containing an adhesively-reinforced stretch-thinned film
Inventor: MCCORMACK ANN LOUISE
IPC: D04H1/58
Filed: 1997-07-09
Abstract: The present invention is directed to film-nonwoven laminates incorporating stretch-thinned, breathable films onto which a pattern or network of adhesive areas is applied to improve durability and strength of the snitch-thinned film.      The present invention has applicability in a wide variety of areas where strength, comfort, liquid impermeability and breathability are needed or desired, including without limitation, personal care absorbent articles, articles of clothing, roll goods and health care-related items.
Patent CA-2264525-A1 (CA)
Title: Method for purifying crude naphthalenedicarboxylic acid and process for preparing polyethylene naphthalate
Inventor: IWASAKI HIROSHI
IPC: C08G63/189
Filed: 1997-09-05
Abstract: A method for preparing polyethylene naphthalate having a low impurity content from a naphthalenedicarboxylic acid containing impurities, which comprises mixing a crude naphthalenedicarboxylic acid with an aqueous ethylene glycol solution, heating the mixture to esterify a part of the naphthalenedicarboxylic acid to prepare a naphthalenedicarboxylic ester, dissolving the naphthalenedicarboxylic ester in the aqueous ethylene glycol solution, bringing hydrogenatable impurities contained in the crude naphthalenedicarboxylic acid into contact with hydrogen in the presence of a hydrogenation catalyst to hydrogenate the impurities to thereby dissolve the same in the aqueous ethylene glycol solution, crystallizing the naphthalenedicarboxylic ester, separating the crystallized naphthalenedicarboxylic ester from the aqueous ethylene glycol solution, and polycondensating the resultant naphtalenedicarboxylic ester. A method for purifying a crude naphtalenedicarboxylic acid to obtain a naphthalenedicarboxylic acid and a naphthalenedicarboxylic ester each having a low aldehyde content from a naphthalenedicarboxylic acid containing aldehydes, which comprises mixing a crude naphthalenedicarboxylic acid with an aqueous alcohol solution, heating the mixture to esterify a part of the naphthalenedicarboxylic acid to prepare a naphthalenedicarboxylic ester, dissolving the naphthalenedicarboxylic ester in the aqueous alcohol solution, bringing the aldehydes contained in the crude naphthalenedicarboxylic acid into contact with a salt of sulfurous acid to prepare an aldehyde adduct, dissolving the aldehyde adduct in an aqueous alcohol solution, and crystallizing and separating the naphthalenedicarboxylic acid and the naphthalenedicarboxylic ester.
Patent CA-2266328-A1 (CA)
Inventor: STOCKINGER JOSEF
IPC: C21B7/00
Filed: 1997-09-02
Abstract: The invention concerns a method of monitoring the operation of a system for feeding an abrasive medium using fluid as conveying medium for at least one burner in a fusion vaporizer plant. The dust extracted from a fusion vaporizer plant or reduction shaft furnace is to be introduced by means of a fluid and via a dust-conveyer tube through at least one dust burner into the fusion vaporizer plant as an additional carbon-carrier. However, the method can also be applied in other melting or incineration plants, such as for example fluid bed reactors. The object to be achieved by this method is to determine as rapidly as possible whether hot gases or unburned oxygen have/has flowed back into the dust-recycling system. To that end, the flow direction in the feed system conveying pipe is measured downstream of the burner or burners. When backflow of the fluid flow is determined or when the presence of oxygen which has penetrated the feed system is determined, the feed system is stopped.