baber/WOPTO huggingface dataset:
Patent CA-2237602-A1 (CA)
Title: Displaying method of reaction path diagram of compound
Inventor: TAMURA FUMIO
IPC: G06F3/14
Filed: 1996-11-14
Abstract: A method for displaying a chemical reaction path diagram by using an apparatus having an input device, a display device and a storage device. The method comprises the steps of generating a chemical reaction path diagram on the basis of input data and displaying it on the display device; extracting an end compound accompanied by a non-displayed adjacent reaction from the compounds constituting the reaction path diagram and displaying a guide mark corresponding to the non-displayed adjacent reaction on the display device;  and scrolling the reaction path diagram so that the non-displayed compounds constituting the non-displayed adjacent reaction indicated by the selected guide mark can be displayed on the display device.
Patent CA-2238069-A1 (CA)
Title: Audio noise reduction system implemented through digital signal processing
Inventor: MERCS LAURA
IPC: H03H21/00
Filed: 1996-11-22
Abstract: A decoder capable of decoding audio signals encoded using analog noise reduction techniques, particularly Dolby A, is implemented by means of digital signal processing. The encoded signal passes through one or more digital filters, producing the decoded signal. The decoded signal is fed back to drive control blocks, which determine the parameters of the digital filters. The determination of these parameters may be arranged so as to emulate closely a given analog noise reduction decoder, such as a Dolby A decoder. The one or more digital filters are relocated to the feed-forward portion of the decoder - they are located in the feedback portion of the encoder when performed using analog techniques - to overcome the problems caused by delay introduced by the digital implementation which prevent a direct conversion of the analog decoder to a digital one.
Patent CA-2239621-A1 (CA)
Inventor: BAILEY DALE R
IPC: H02J9/06
Filed: 1996-11-27
Abstract: Un véhicule tel qu'un véhicule aérien, terrestre, aquatique, spatial ou similaires est équipé d'un système de transfert d'énergie qui assure l'alimentation en courant des équipements électriques de bord lors d'un passage normal d'une source d'alimentation à une autre, non consécutif à une panne, mais commandé manuellement par le pilote ou automatiquement par le système. Le système de transfert d'alimentation, qui peut être utilisé avec des sources de courant C.C. séparées, comprend un ensemble bus jumelé assurant une alimentation électrique continue des équipements de bord par une première source de courant jusqu'à ce qu'une deuxième source de courant une fois mise en route soit à même de fournir du courant aux équipements en question, la première source pouvant être interrompue dès que la deuxième est branchée. Le système s'applique aux commutations entre différents groupes d'alimentation de bord et à celles entre des groupes d'alimentation de bord et des alimentations extérieures.
Patent CA-2247927-A1 (CA)
Inventor: SLINGSBY ROSANNE W
IPC: B01J41/20
Filed: 1997-02-26
Abstract: Borate-binding compositions are provided comprising polymers containing covalently attached borate-binding carbohydrates. Methods of making and using the compositions are also provided.
Patent CA-2251967-A1 (CA)
Inventor: GIUGNI STEVE
IPC: H01P1/15
Filed: 1998-03-05
Abstract: This invention concerns a multi-port switching circuit which may operate at frequencies up to an even beyond 100 GHz. The invention may be implemented as a GaAs based monolithic microwave integrated circuit. The circuit comprises at least three ports arranged in a star configuration around a central ring. A  single switching device is associated with each port. Each switching device is connected to two transmission lines to provide impedance matching and an interconnecting path around the ring. The transmission lines are initially chosen to have a length of a quarter wavelength at the centre of the band of operation of the switch. The matching lines and the lines which form the interconnecting ring are then subject to an optimisation procedure in which each pair of the switching devices is in turn modelled in their ON state while the remainder of the switching devices is modelled in their OFF state. The optimisation procedure aims to achieve low transmission and insertion loss, while providing good isolation.
Patent CA-2252581-A1 (CA)
Title: Flea protease proteins, nucleic acid molecules, and uses thereof
Inventor: GAINES PATRICK J
IPC: C12N15/09
Filed: 1997-04-24
Abstract: The present invention relates to flea serine protease proteins and flea cysteine protease proteins; to flea serine protease and cysteine protease nucleic acid molecules, including those that encode such proteins; to antibodies raised against such proteins; and to compounds that inhibit flea serine protease and/or cysteine protease activities. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitors. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies, and/or inhibitors as well as the use of such therapeutic compositions to protect a host animal from flea infestation.
Patent CA-2253031-A1 (CA)
Inventor: SCHROEDER RICK
IPC: B21F15/04
Filed: 1998-11-05
Abstract: A wire wrapping tool is provided for wrapping a wire end about a fixed wire. The tool includes a housing having an outer slot across a front end and a handle extending rearwards from a back end. A spur gear is rotatably mounted near the front end and includes a hub extending axially from each side through respective sides of the housing. A bore extends axially through the spur gear and both hubs. A slot extends radially from the bore to a periphery of the spur gear between a pair of adjacent gear teeth. The slot also extends through the hubs from the bore to a side of the hub. An idler gear is mounted centrally within the housing for meshing with the spur gear. A drive gear is mounted near the back end of the housing for meshing with the idler gear and includes a socket extending from a side of the drive gear through the housing. The socket is arranged to connect to a suitable drive such as a power drill. The outer slot of the housing is for co-operation with the slot of spur gear for receiving the fixed wire therethrough such that the fixed wire extends axially through the bore in use and the spur gear rotates about the fixed wire. The hubs on the spur gear are arranged to engage the wire end such that the wire end is rotated with the spur gear about the fixed wire.
Patent CA-2257165-A1 (CA)
Inventor: EVANS IAN DAVID
IPC: C02F3/06
Filed: 1997-05-28
Abstract: A wastewater treatment system comprises a fixed bed aeration zone (20, 30) and, upstream of the aeration zone, a moving bed biofilm reactor zone (10).  Typically, the reactor zone comprises a buoyant medium (11) and a forced oxygen supply (13).
Patent CA-2257909-A1 (CA)
Inventor: CHEN TSUHAN
IPC: H04L9/08
Filed: 1998-02-24
Abstract: Secure data transmission apparatus comprises a data translator for translating an input string of signals, each signal having incomplete information for identifying an alphanumeric character, into a first encryption key. A data encrypter receives a first encryption key, a choice of encryption algorithm and a message and outputs an encrypted message according to the selected algorithm. The apparatus may be applied whenever the user is confronted with telecommunications apparatus that provides a limited input capability and no means for encrypting a message for transmission to an end user. In this manner, for example, a user may authenticate their name for display on caller identification plus name apparatus and the called party can be assured, before answering their line, that the call is from the party having the displayed name.
Patent CA-2258532-A1 (CA)
Title: Bag-in-box package with adjustable outlet position
Inventor: SCHROEDER ALFRED A
IPC: B65D77/06
Filed: 1997-06-13
Abstract: A box (32) and the method for use thereof for a concentrate bag-in-box package for use with bags having a discharge tube (52) for use with beverage dispensers having peristaltic pumps, the box having a tear flap (34) defining a plurality of different tube opening locations (36) whereby different size packages can be used even though their center line does not line up with the tube passageway in the pump.
Patent CA-2260388-A1 (CA)
Title: Improved process for the preparation of substituted hydroxyhydrocinnamate esters by removal of tin catalysts
Inventor: ROSS JOHN RICHARD
IPC: C07C67/03
Filed: 1999-01-29
Abstract: The invention is directed to an improved process for the preparation of a compound of formula (I) (see fig. I) wherein R is alkyl, n is 0 to 2, m is 1 to 4 and A is alkyl, interrupted or uninterrupted alkylene, alkanetriyl or pentaerythrityl, by transesterifying the corresponding lower alkyl with a higher alkanol of the formula A-(OH)m in the presence of a tin catalyst; wherein the improvement comprises reacting the tin catalyzed transesterification reaction mass with a carboxylic acid or hydrate thereof neat, in the absence of an aqueous medium, until the tin catalyst forms an insoluble derivative, and then separating the insoluble derivative from the reaction mass by filtration without the assistance of a filtration aid. The invention allows for a convenient method by which to remove the residual tin catalyst from the substituted hydroxyphenylcarboxylic acid ester compounds of formula (I).
Patent CA-2260564-A1 (CA)
Title: Nickel fine powder and method for preparing the same
Inventor: SHIMAMURA HIROYUKI
IPC: H01G4/12
Filed: 1999-01-29
Abstract: The present invention herein provides nickel fine powder which comprises nickel, and 0.02 to 1.0% by weight of magnesium and/or 0.02 to 0.1% by weight of calcium dispersed in the nickel; and a method for preparing nickel fine powder which comprises the steps of forming nickel hydroxide by mixing an aqueous solution containing a magnesium salt and/or a calcium salt and a nickel salt with an aqueous solution of sodium hydroxide and then reducing the hydroxide with a hydrazine reducing agent. The nickel fine powder has thermal shrinkage characteristics very close to those observed for ceramic substrates and is accordingly suitable for use, in particular, as a material for producing an internal electrode for laminated ceramic condensers.
Patent CA-2263914-A1 (CA)
Title: Bidentate metalloprotease inhibitors
Inventor: TAIWO YETUNDE OLABISI
IPC: C07D213/16
Filed: 1997-08-22
Abstract: The invention provides compounds which are useful as inhibitors of metalloproteases, and which are effective in treating conditions characterized by excess activity of these enzymes. In particular, the present invention relates to a compound having a structure according to Formula (I) as described in the claims, or an optical isomer, diastereomer or enantiomer thereof, or a pharmaceutically-acceptable salt, or biohydrolyzable alkoxyamide, ester, acyloxyamide, or imide thereof. Also disclosed are compounds, pharmaceutical compositions and methods of treating diseases characterized by metalloprotease activity using these compounds or the pharmaceutical compositions containing them.
Patent CA-2266434-A1 (CA)
Title: Article with stay-in-place feature, e.g. diaper
Inventor: TANZER RICHARD WARREN
IPC: A61F13/56
Filed: 1997-09-04
Abstract: An article (20) has a front waistband section (38), a back waistband section (40), an intermediate section (42) interconnecting the front and back waistband sections, a longitudinal direction (86), a cross-direction (88) and a laterally extending line (100) which is longitudinally centered in the article (20). At least a first fit panel (36) is connected to an inside surface (66) of at least one of the waistband sections (38, 40), and the fit panel has a direction-dependent coefficient of friction value along a basis line (54) of the fit panel. A first coefficient of friction value is exhibited when sliding on the fit panel along the basis line in a first, inward basis direction (62) generally toward the lateral line and a different second coefficient of friction value is exhibited when sliding on the fit panel along the basis line in a second, outward basis direction (64) which is opposite the first basis direction (62).
Patent CA-2269780-A1 (CA)
Title: Polyanionic polymers as adjuvants for mucosal immunization
Inventor: HILGERS LUUK
IPC: A61K39/39
Filed: 1997-10-23
Abstract: Mucosal adjuvants for vaccines are disclosed comprised of water-soluble polyanionic polymers which have anionic constitutional units obtained from acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, ethylsulphonic acid, vinylsulphuric acid, vinylsulphonic acid, styrenesulphonic acid, vinylphenylsulphuric acid, 2-methacryloyloxyethane sulphonic acid, 3-methacryloyloxy-2-hydroxypropanesulphonic acid, 3-methacryl amido-3-methylbutanoic acid, acrylamidomethylpropanesulphonic acid, vinylphosphoric acid, 4-vinylbenzoic acid, 3-vinyl oxypropane-1-sulphonic acid, N-vinylsuccinimidic acid, and salts of the foregoing. The polyanionic polymers may further have hydrophobic constitutional repeating units, such as alkylesters, cycloalkylesters, hydroxyalkylesters, ethers, glycols, aromatic groups and salts thereof. Also disclosed herein are use of the polyanionic polymers of the present invention for the induction or enhancement of mucosal immune responses, as well as nonparenteral vaccines containing the polyanionic polymer of the present invention.
Patent CA-2272421-A1 (CA)
Inventor: ROFFELSEN FRANCISCUS
IPC: B21D53/06
Filed: 1997-11-24
Abstract: Heat exchanger tube (4; 4') composed of a metal outer tube (2; 2') having inner profile (8; 8') and a metal inner tube (3; 3') having outer profile (9;  9'), wherein the profiles are in undercut engagement with each other so that the inner and outer tubes are in rigid abutment without play, and at least one longitudinal channel (10, 11; 10', 11') is provided for leak detection, formed between the outer tube and the inner tube. The heat exchanger tube can be manufactured by designing the profiles so that the inner and outer tubes can be screwed or slid one into the other, after which the tubes can be brought into a play-free, rigidly abutting configuration through deformation, for instance by means of a drawing die.
Patent CA-2272461-A1 (CA)
Inventor: LAURENT DENIS
IPC: C07C57/075
Filed: 1997-11-20
Abstract: The method consists in extracting acrylic acid by countercurrent filtration washing of reaction gases by at least a hydrophobic absorbing heavy solvent, then recuperating the purified acrylic acid from the solution obtained at the end of this extracting step. As hydrophobic absorbing heavy solvent at least a hydrophobic aromatic compound is used having: a boiling point under atmospheric pressure between 260° C. and 380° C.; a crystallisation temperature less than 35° C. and a viscosity less than 10 mPa.s in a range of temperature between 30-80° C.
Patent CA-2273094-A1 (CA)
Title: Gel formulations for topical drug delivery
Inventor: BEAURLINE JOSEPH M
IPC: A61K47/10
Filed: 1997-12-01
Abstract: Pharmaceutical gel formulations for topical drug delivery include drug, colloidal silicon dioxide, triacetin and, preferably, propylene glycol. The gel formulations are well suited for topical delivery of the drug 4-amino-2-ethoxymethyl-.alpha.,.alpha.-dimethyl-1H-imidazo[4,5-c]quinoline-1-ethanol, which when applied topically induces cytokines, such as interferon and tumor necrosis factor, locally in the skin or mucous membranes of a mammal. The gel formulations are also well suited for topical delivery of drugs for treatment of diseases involving skin and/or mucosal lesions because the gel formulations do not need to include irritating components.
Patent CA-2274232-A1 (CA)
Inventor: DION ERNEST A
IPC: A61M1/00
Filed: 1997-12-17
Abstract: Un instrument chirurgical comprend un tube intérieur qui tourne à l'intérieur d'un tube extérieur et porte un outil chirurgical comportant une fraise qui sert à couper les tissus exposés à la fraise à travers une ouverture prévue dans le tube extérieur. L'instrument présente plusieurs caractéristiques qui améliorent l'efficacité de l'aspiration dans le tube intérieur des fragments de tissus coupés par la fraise et qui permettent à la fraise de couper efficacement des tissus mous ainsi que des tissus durs comme de l'os. La fraise comprend, par exemple, une queue proximale dont une paroi comporte une ouverture d'une largeur substantielle par rapport au diamètre extérieur de la paroi qui permet d'acheminer les fragments de tissus coupés par la fraise dans une chambre intérieure de la queue puis dans un passage du tube intérieure. L'ouverture du tube extérieure est suffisamment étirée dans le sens axial pour exposer une grande partie de l'ouverture. Cette grande ouverture et son exposition par l'ouverture du tube extérieur réduisent le risque d'obstruction étant donné qu'elle laisse passer des fragments de tissus plus gros dans le tube intérieur pour qu'ils soient aspirés. En outre la fraise comporte une pluralité de rainures qui sont allongées dans le sens axial et inclinées transversalement aux nervures, lesdites rainures définissant une pluralité d'encoches espacées axialement dans chacun des bords coupants. Les encoches divisent les bords coupants en segments relativement petits qui produisent des fragments de tissus de taille correspondante (même lorsque la fraise est utilisée pour couper des tissus mous) ceci réduisant encore le risque d'obstruction. Les bords coupants sont quant à eux de préférence prévus avec un angle de pente positif qui rend les bords coupants plus tranchants et appropriés à couper efficacement les tissus relativement mous plutôt qu'à les cisailler ou les déchiqueter.
Patent CA-2277221-A1 (CA)
Title: Microchannel marking engine
Inventor: KUEHNLE MANFRED R
IPC: B41J2/015
Filed: 1997-11-19
Abstract: A printer (10) employs electrostatic grippers (12, 14, and 16) to advance paper (18) past a print head (22) that forms capillaries (33) in which capillary action ordinarily retains hot-melt ink and prevents it from marking the paper. When the paper is to be marked, a potential difference is applied to electrodes (40 and 42) to create electric-field gradients that cause the ink to bulge from the capillary outlet and mark the paper.
Patent CA-2278425-A1 (CA)
Title: Image projection system for dome surface
Inventor: MIYAZAKI HIDEHIKO
IPC: G03B37/06
Filed: 1999-07-23
Abstract: An image to be projected is deformed to obtain a projected image having small distortion. An image deforming device constituted by an optical fiber bundle is arranged in front of an original of a projector arranged at a position other than the center of a dome, so that the image of the original is transmitted from an end face on the incident side of an image correction device to an end face on the emission side as images divided into pixels using optical fibers as units. A secondary image subjected to predetermined deformation is displayed on the end face on the emission side, and the secondary image is projected on a dome surface to obtain a projected image which is free from distortion by the same manner as that performed when the original is projected from the center of the dome onto the same projection surface.
Patent CA-2281144-A1 (CA)
Title: A device and method for balancing loads between different paths in a computer system
Inventor: AHMED KHALID
IPC: H04L12/803
Filed: 1999-08-26
Abstract: A system and method for balancing loads in a computer system is disclosed. The system and method assess the health of various paths in a computer system by determining the health or status of at least two layers on each path. A health or status of the paths is then determined based on the information of tine health of each layer in the path. A load balancing device routes information for processing to the various paths based on the determined health of the paths. To better estimate the health of a path, algorithms which weight the health signals for each layer are used giving greater weight to layers of greater importance. The system and method can also add or remove additional paths if the combined health of the existing paths is determined to be above or below a predetermined value. In addition, the weight of certain layers can be locked in to provide for updating of specific layers. A topology of the computer system is used to determine the health or status of the paths and this topology can either be entered by a programmer or independently determined by the load balancing system.
Patent CA-2283157-A1 (CA)
Inventor: TJON-JOE-PIN ROBERT M
IPC: C09K8/08
Filed: 1998-03-06
Abstract: L'invention concerne la dégradation de molécules de xanthane au moyen d'un complexe d'enzyme xanthanase stable à des températures supérieures à 250  DEG F, telles que les températures de certains trous de forage et cycles de fabrication. L'enzyme xanthanase est produite par une nouvelle bactérie de sol. Le complexe d'enzyme xanthanase peut s'utiliser pour enlever une détérioration de la formation due au xanthane, telle que des gâteaux de filtre et des filtrats de forage, ou pour enlever des gâteaux de filtre et/ou des résidus dus au xanthane et présents dans le matériel de traitement. Le complexe d'enzyme xanthanase peut également s'utiliser pour réduire la viscosité de fluides contenant du xanthane, tels que des fluides de fracturation hydraulique, des gels de blocage, des boues de forage et des fluides de traitement. Le complexe d'enzyme xanthanase peut aussi s'utiliser simultanément avec d'autres fluides de traitement de puits ou fluides utilisés dans des procédés de traitement, tels que des opérations de stimulation ou de cimentation, pour augmenter l'efficacité de ces traitements.
Patent CA-2283177-A1 (CA)
Inventor: ABRAMSON FRED P
IPC: H01J49/10
Filed: 1998-03-11
Abstract: A mass spectrometer or method for measuring the isotope ratio of samples containing carbon and nitrogen compounds performs adding a sample containing carbon or nitrogen compounds to a sample introduction component in which a mixture of analytes is separated into molecules. The sample introduction is continuously introduced into a chemical reaction interface for converting intact carbon and nitrogen analytes into compounds having fluorine.
Patent CA-2283266-A1 (CA)
Title: Method and apparatus for still picture transmission and display
Inventor: BURMAN BO
IPC: H04N21/81
Filed: 1998-03-05
Abstract: An imaging system (6) and method for alleviating perceptional problems of a viewer during the transmission and display of high resolution still images on a video system is disclosed. Through modifications to an encoder (16) and decoder (24) within the imaging system, the viewer may select a still image or portion thereof from a video image sequence for viewing. The imaging system and method ameliorate perceptional delays in displaying the lengthy high resolution still image by immediately displaying a lower-resolution, shorter-length video image frame corresponding to the still image. The lower resolution video image being displayed is then updated and refined with the image data from the high resolution still image as it is received.
Patent CA-2284707-A1 (CA)
Title: Preforme en polyester aromatique, moulages par soufflage et procede de production de ladite preforme
Inventor: KOMENOI AKIO
IPC: B29C49/00
Filed: 1999-01-26
Abstract: En vue du moulage par injection d'une préforme en polyester aromatique par l'exposition avantageuse de polyester aromatique fondu à une atmosphère à pression réduite, on produit une préforme en polyester aromatique à l'aide d'une machine à mouler dotée d'évents situés à des positions spécifiques pour faire le vide dans la machine, ce qui permet de produire avantageusement une préforme à teneur réduite en acétaldéhyde.