baber/WOPTO huggingface dataset:
Patent CA-2190274-C (CA)
Inventor: TANAKA YASUHIRO
IPC: C08G63/78
Filed: 1996-04-05
Granted: 2002-07-02
Abstract: A process for producing a polyethylene terephthalate in which the amount of the oligomers, such as cyclic trimer etc., is lower and which causes metal mold staining to occur difficultly. The process comprises an esterification stage in which dicarboxylic acids including mainly terephthalic acid or ester- forming derivatives of such acids are esterified with glycols including mainly ethylene glycol or with ester-forming derivatives of such glycols; a liquid phase polycondensation stage in which the esterified product obtained in the esterification stage is subjected to a polycondensation in a liquid phase containing a polycondensation catalyst and having a content of an alkaline solubilizing agent of 0.4 mole or less per mole of the polycondensation catalyst with heating; a solid phase polycondensation stage in which the polycondensation product obtained in the liquid phase polycondensation stage is heated at a temperature below the melting point of the product in an inert atmosphere; and an aqua-treatment stage in which the polycondensation catalyst is deactivated by contacting the polycondensation product obtained in the solid phase polycondensation stage with water.  The polyethylene terephthalate obtained by this process is suitable as the material for containers to be charged with drinks.
Patent CA-2198103-C (CA)
Inventor: REIMELT ANDREAS
IPC: F16L58/10
Filed: 1995-08-29
Granted: 2006-12-12
Abstract: A process for renovating pipes in which internal deposits in the pipe are removed by flowing abrasive agents and the pipe is coated internally with a viscous, curing material is performed to obtain a conveyance quality comparable to that of new pipes using simple technical means and the prevention of blockages by removed internal deposits during treatment in such a way that the abrasive agent is conveyed to and fro by means of an alternating pressure drop in the pipe and finally out of the pipe by means of a pressure drop between the two ends of the pipe.
Patent CA-2199413-C (CA)
Title: Procede et machine d'impression pour la mise en oeuvre du procede et support ainsi imprime
Inventor: CHOULET LUC
IPC: B41M1/28
Filed: 1997-03-06
Granted: 2004-03-30
Abstract: L'invention est relative à un procédé pour imprimer sur un support une image en couleur, caractérisé par le fait qu'il comprend les étapes consistant à : - décomposer l'image à reproduire en une composition de surfaces élémentaires colorées (24), lesdites surfaces élémentaires étant disposées selon une répartition prédéterminée (22), la couleur de chaque surface élémentaire étant choisie parmi un ensemble prédéterminé de couleurs de base et un ensemble prédéterminé de nuances de ces couleurs de base (23), le nombre de nuances pour au moins une couleur de base étant supérieur ou égal à trois, le choix de la couleur de base et de la nuance attribuée à chacune desdites surfaces élémentaires étant effectué de manière à ce que ladite composition de surfaces élémentaires colorées (24) reconstitue visuellement l'image à reproduire, - imprimer ladite composition de surfaces élémentaires colorées sur ledit support au moyen d'encres dont les teintes sont choisies de manière à pouvoir reproduire, compte-tenu de la couleur dudit support, lesdites couleurs de base et leurs nuances lors de l'impression, la nuance d'une couleur de base attribuée à une surface élémentaire donnée étant obtenue lors de l'impression en jouant sur la proportion de chaque encre au sein de la surface élémentaire correspondante sur le support.
Patent CA-2204622-C (CA)
Title: Machine a emballer et technique pour eviter la separation de la partie fermee des emballages
Inventor: ORNDORFF GARY JAMES
IPC: B65B51/30
Filed: 1995-10-27
Granted: 2001-09-04
Abstract: Machine à emballer servant à envelopper hermétiquement des groupes séparés (30) d'articles absorbants (32) dans des couches (22, 24) d'un matériau d'emballage en continu. La machine comprend un appareil à fermer le matériau d'emballage (40), qui procède au liage thermique des couches, un appareil de coupe (50) de la partie fermée du matériau d'emballage, placé en aval de l'appareil à fermer le matériau d'emballage, qui coupe le matériau d'emballage en continu pour produire des paquets individuels (28) d'articles absorbants groupés et d'un dispositif de soutien par sangle (60) pour éviter que la partie fermée du matériau d'emballage (26) se sépare entre l'appareil à fermer et l'appareil de coupe du matériau d'emballage. Le dispositif de soutien par sangle comprend plusieurs pièces de maintien (70) qui maintiennent les couches de matériau d'emballage entre l'appareil à fermer et l'appareil de coupe.
Patent CA-2204943-C (CA)
Inventor: CUNKELMAN BRIAN L
IPC: B60T15/02
Filed: 1997-05-09
Granted: 2000-11-07
Abstract: A manually operable pneumatic emergency brake valve and electric switch including a valve body having an inlet port and an outlet port, an internal valve assembly normally seated by the biasing force of a helical spring, a pair of pivotal levers for operating a movable valve stem to unseat said internal valve assembly and said movable stem including a cam surface for actuating the electric switch, to signify an emergency brake application.
Patent CA-2210799-C (CA)
Title: Valaciclovir hydrochloride in anhydrous crystalline form
Inventor: WINNIKE RICHARD AUGUSTUS
IPC: A61P31/22
Filed: 1996-01-19
Granted: 2008-06-10
Abstract: The invention relates to an anhydrous crystalline form of 2--[(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]ethyl L--valinate hydrochloride, otherwise known as valaciclovir hydrochloride and a process for preparing it.
Patent CA-2214024-C (CA)
Title: Conducteur electrique protege contre les perturbations electromagnetiques depassant un seuil
Inventor: BRAUT JEAN-LOUIS
IPC: H01R13/719
Filed: 1997-09-08
Granted: 2001-11-20
Abstract: Dispositif de transport d'énergie électrique ou de signal électrique comprenant une âme, un conducteur extérieur et, entre l'âme et le conducteur extérieur, un matériau diélectrique. Le dispositif est caractérisé en ce que le matériau diélectrique comprend un matériau (17') qui est isolant lorsque le champ électrique est inférieur à un seuil déterminé et est conducteur quand le champ électrique dépasse ce seuil, de façon à empêcher la transmission de signaux pour lesquels le champ électrique est supérieur audit seuil. L'âme présente une configuration à pointes (40, 41, 42) permettant d'augmenter localement la valeur du champ électrique et donc d'abaisser le seuil de champ électrique extérieur à partir duquel ledit matériau (17') devient conducteur. L'invention s'applique à un câble ou à un connecteur protégé contre les surtensions.
Patent CA-2214294-C (CA)
Inventor: SHEPPARD PETER H
IPC: B62D5/06
Filed: 1997-08-29
Granted: 2002-04-23
Abstract: A power steering system for on-the-road and off-the-road vehicles  includes  a  positive  displacement  hydraulic  power steering pump, a master power gear with a rotary valve and a slave power gear mounted in tandem with the master power gear.          Heated return hydraulic fluid from the master power gear flows through a heat transfer passage in the slave power gear and is cooled.
Patent CA-2215910-C (CA)
Title: Anti-contaminating catheter sheath with filter/closure barriers
Inventor: LORENZEN RICK D
IPC: A61M25/01
Filed: 1995-04-20
Granted: 2002-02-19
Abstract: Filtration and closure barriers (50, 100, 260, 400) are disclosed which prevent passage of gas-carried contamination between the atmosphere and a collapsible sheath (26), which surrounds a catheter tube (12), during insertion and/or removal of the catheter tube from the respiratory tract of a medical patient.
Patent CA-2217700-C (CA)
Title: Procede de detection de substances biologiquement actives
Inventor: TULLIN SOREN
IPC: C12N15/65
Filed: 1996-01-31
Granted: 2002-12-17
Abstract: La présente invention décrit un procédé qui permet de détecter une substance biologiquement active modifiant des processus intracellulaires. Ce procédé consiste à: a) mettre en culture une cellule contenant une séquence d'ADN codant pour (i) une protéine fluorescente verte comprenant un site de reconnaissance de protéine kinase, ou (ii) une protéine fluorescente verte dans laquelle un ou plusieurs acides aminés ont été substitués, insérés ou supprimés de sorte qu'un domaine de liaison d'un deuxième messager ou un site de reconnaissance enzymatique soit produit, ou (iii) un polypeptide hybride de protéine fluorescente verte ou une protéine fluorescente verte modifiée et un site de reconnaissance enzymatique ou un domaine de liaison pour un deuxième messager dans des conditions permettant d'exprimer la séquence d'ADN; b) mesurer la fluorescence de la cellule; c) mettre la cellule en incubation avec un échantillon suspecté de contenir une substance biologiquement active modifiant les processus intracellulaires; et d) mesurer la fluorescence produite par la cellule ayant subi l'incubation et repérer toute modification de la fluorescence par rapport à celle mesurée dans l'étape b), cette modification signalant la présence d'une substance active biologiquement dans ledit échantillon.
Patent CA-2218126-C (CA)
Inventor: HARRINGTON STEVEN J
IPC: G06V10/00
Filed: 1997-10-08
Granted: 2002-04-30
Abstract: A document containing colored strokes or lines is reproduced in a way to preserve the color intent if the reproduced document is copied on a black-and-white device. Dashed lines are generated for insertion into the stroke, with dashing patterns that reflect the original color of the stroke. Outlining in black or white, dependent on the stroke color, may be provided. If the stroke is wide enough, the color within the stroke may alternatively be reproduced with a black and white reproducible pattern.
Patent CA-2218963-C (CA)
Inventor: TROTT DOUG
IPC: F16K31/04
Filed: 1997-10-15
Granted: 2003-08-19
Abstract: A valve actuator preferably driven by an electric motor is disclosed.  The valve actuator is useful with surface safety valves and uses power input from an electric motor to position the valve in its normal position.  A mechanism is provided to allow the valve to shift positions to a fallsafe position upon failure of electrical power to the motor connected to the actuator.  A screw drive is provided with the motor, with a latch mechanism holding a nut against rotation.  The nut can advance longitudinally upon rotation of the drive to move a valve stem.  Upon failure of electrical power, the latch mechanism releases the nut form a coupling in the actuator which is connected to the valve stem, and the main return springs in the actuator allow the nut to rotate with respect to the screw drive so that the valve can assume its failed position.  Normal applications allow the valve to fail closed; however, the valve can be configured so that failure results in opening of the valve if the application requires it.
Patent CA-2227564-C (CA)
Title: Electroluminescent lamp using multilayer optical film
Inventor: BENSON OLESTER JR
IPC: G02F1/13357
Filed: 1996-07-29
Granted: 2006-04-04
Abstract: Electroluminescent lamps incorporating one or more multilayer optical films according to the present invention to polarize and/or reflect light. The multilayer optical films exhibit the ability to reflect significant amounts of normal and off-axis incident light.
Patent CA-2228069-C (CA)
Title: Liquid-crystalline resin composition and precision moldings of the composition
Inventor: INOUE TOSHIHIDE
IPC: C08K3/38
Filed: 1998-01-28
Granted: 2006-08-01
Abstract: Disclosed are a liquid-crystalline resin composition comprising (A) from 20 to 99 parts by weight of a liquid-crystalline resin and (B) from 1 to 80 parts by weight of aluminium borate whiskers of which the grain size distribution as obtained through laser diffractometry is such that D90/D10 is from 7.5 to 20, and precision moldings of the composition.
Patent CA-2229146-C (CA)
Inventor: CATANZARITE DAVID M
IPC: G05B13/02
Filed: 1996-06-19
Granted: 2001-10-02
Abstract: A controllable fluid damper (22) is employed in a seat suspension system. A microprocessor (42) receives successive signals from a displacement sensor (44) and computes a rate of displacement. This displacement rate is used to determine an appropriate control signal for the damper (22) to provide the desired isolation of the seat occupant from the vibration input to the frame . A rate control method is disclosed as a preferred control technique for providing the desired isolation.
Patent CA-2235255-C (CA)
Title: Ink knife for an ink duct roller of a printing machine
Inventor: BRUNI HANSPETER
IPC: B23K26/02
Filed: 1996-10-17
Granted: 2005-09-13
Abstract: A process is disclosed for producing an ink knife (10) for the ink duct roller of a printing machine from an at least about 2 mm thick metal plate. Parallel slits (18) are formed which extend from the working edge of the ink knife (10) over part of the plate width and form lamellas (24) of colour zone width. Parallel transverse and blind-ended grooves (16) which start at the working edge are first cut into the metal plate at intervals which correspond to the width of the colour zones. Afterwards, a continuous rating groove that extends parallel to the working edge is cut in the area of the blind ends of the transverse grooves (16), preferably on at least one side of the metal plate. Finally the metal plate is completely cut through in the area of the transverse grooves (16), preferably by means of laser beams, forming a narrow slit (18) at intervals which correspond to the width of the colour zones.
Patent CA-2236125-C (CA)
Inventor: IMAMURA MASAKI
IPC: C22B3/32
Filed: 1998-04-29
Granted: 2002-06-25
Abstract: ABSTRACT OF THE DISCLOSURE    Provided  is  a method  of  purifying  a crude  nickel sulfate  solution  to  give  pure  nickel  sulfate  through solvent extraction, in which the impurities such as cobalt, calcium, magnesium, iron, zinc, copper, sodium, ammonia and others to be in the crude solution are removed while,  if necessary, effectively recovering cobalt, and for which the amount of a neutralizer to be used is reduced and the cost of treating wastewater is also reduced.    The method comprises a first purifying step comprising an extraction step of adding an organic acid extractant to a crude nickel sulfate solution to thereby extract nickel into the extractant to give a nickel-loaded organic phase, followed by a scrubbing step of scrubbing the organic phase as obtained in the previous extraction step with a nickel-containing  scrub  solution  to  thereby remove  sodium  and ammonia from the organic phase; and a second purifying step of adding a crude nickel sulfate solution to the nickel-retaining organic phase as obtained in the previous first purifying step so as to exchange the nickel in the organic phase  with  the  impurities  except  sodium  and  ammonia existing in the crude nickel sulfate solution added in this step, thereby giving a purified nickel sulfate solution and an organic phase containing impurities; and optionally a third purifying step of recovering nickel from the organic the organic phase containing impurities as obtained in the second purifying step, and a step of recovering a valuable metal, cobalt from the organic phase containing impurities.
Patent CA-2241684-C (CA)
Inventor: DENNEN MICHAEL WILLIAM
IPC: H01L29/78
Filed: 1997-02-04
Granted: 2006-08-01
Abstract: Un TEC de Fermi comprend une zone terminale de champ de drain située entre les zones drain et source, de façon à diminuer et de préférence à éviter l'injection dans le canal de porteurs provenant de la source par suite à la polarisation du drain. La zone terminale du champ de drain empêche l'abaissement excessif de l'effet barrière induit par le drain, tout en laissant persister un faible champ vertical dans le canal. Elle est de préférence constituée d'une couche contre-dopée enfouie entre la source et le drain, et s'étendant sous la surface du substrat depuis la source vers le drain. On peut former la couche contre-dopée enfouie en utilisant une structure à trois cuvettes qui donne trois couches entre la source et le drain éloignés l'un de l'autre. La zone terminale du champ de drain peut également être utilisée dans un transistor à effet de champ MOS classique. On forme de préférence la zone canal par dépôt épitaxial, ce qui évite l'obligation de la contre-doper par rapport à la zone terminale du champ de drain. Ceci permet une plus grande mobilité des porteurs dans le canal pour un niveau de dopage donné.
Patent CA-2259581-C (CA)
Inventor: KAWAJI TOSHIKUNI
IPC: A61K9/70
Filed: 1998-05-11
Granted: 2007-09-18
Abstract: Patch preparations for percutaneous absorption with the use of supports showing an appropriate strength as a patch support, which are excellent in drug barrier characteristics, compatibility with the skin, ODT effects and handling characteristics and can sustain these specific properties in a stable state over a prolonged period of time, thus ensuring good percutaneous absorption of drugs. In these patch preparation, use is made as the support of polyester film/nonwoven vinylon fabric laminates showing an elongation percentage of at least % and a tensile cutting load of at least 0.5 kg/10 mm, when measured by the test method specified in JIS K6732. In particular, the thickness of the polyester film constituting the laminate supports ranges from 1.5 to 6.0 µm and the unit weight of the nonwoven vinylon fabric ranges from 3 to 12 g/m2.
Patent CA-2259700-C (CA)
Inventor: WHITTENBURY CLIVE G
IPC: B27L5/06
Filed: 1999-01-20
Granted: 2007-05-08
Abstract: La présente invention fournit une méthode et un appareil de coupe du bois ou autre matériau en le séparant le long d'une ligne de faille contrôlée au moyen de l'application d'une force mécanique combinée à un laser pour briser les liens moléculaires qui retiennent le matériau le long de la ligne de faille contrôlée. Une utilisation de choix de l'appareil de coupe est habituellement une grande lame de coupe en coin à surfaces planaires supérieures et inférieures qui convergent l'une vers l'autre pour se terminer au tranchant. La lame est habituellement creuse et dotée d'une cavité permettant le passage de fibres optiques acheminant le laser jusqu'à une fenêtre transparente fixée au tranchant de la lame. Le laser passe par la fenêtre et est dirigé vers la ligne de faille contrôlée dans le matériau coupé afin de briser les liens moléculaires et affaiblir localement le matériau.
Patent CA-2260491-C (CA)
Inventor: LIMBERG ALLEN LEROY
IPC: H04N5/44
Filed: 1999-01-28
Granted: 2002-06-04
Abstract: An N-level digitally encoded signal at a symbol rate f s substantially equal to three times the NTSC color subcarrier frequency, N being a plural integer, modulates a carrier signal of a frequency within a few hundred kilocycles of the NTSC  audio carrier, for transmission through a channel subject at times to the presence of a co-channel NTSC analog television signal. The modulation is suppressed-carrier amplitude-modulation generating first and second amplitude-modulation sidebands. Any portion of the amplitude-modulation sidebands extending outside the channel is suppressed in the transmitted signal, thereby making the first amplitude-modulation sideband a vestigial sideband providing an image for only a portion of the second amplitude-modulation sideband closer in frequency to the carrier signal. The amplitude responses of the vestigial sideband and the portion of the second amplitude-modulation sideband closer in frequency to the carrier signal are halved in the transmitted signal compared to the amplitude response of a remaining portion of the second amplitude-modulation sideband further in frequency from the carrier signal. A fixed-amplitude pilot signal of the same frequency as the suppressed carrier is included in the transmitted signal.
Patent CA-2267027-C (CA)
Title: Rotary atomizer for particulate paints
Inventor: VETTER KURT
IPC: B05B7/08
Filed: 1999-03-26
Granted: 2011-11-22
Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.
Patent CA-2270667-C (CA)
Title: Process for making propylene homo or copolymers
Inventor: LEINONEN TIMO
IPC: C08F10/00
Filed: 1997-11-17
Granted: 2006-05-16
Abstract: There is provided a process for homo or copolymerising propylene, wherein propylene is polymerised in the presence of a catalyst system comprising a pro-catalyst component and a co-catalyst component, wherein said pro-catalyst component comprises magnesium chloride, a titanium compound and at least two internal donor compounds, wherein the at least two donor compounds comprise a first internal donor compound formed from a transesterification reaction of an alcohol selected from methanol and ethanol with an ester of a phthalic acid in which at least one alkoxy groups thereof comprises at least 5 carbon atoms and a second internal donor compound being said ester of a phthalic acid; wherein said co-catalyst component consists of trialkyl aluminium and optionally an external donor; wherein the polymerisation is carried out in at least one slurry reactor in a reaction medium comprising liquid propylene in a concentration greater than that of any single other component of the reaction medium; at a polymerisation temperature from 80 to 91 °C; and wherein an amount of said first internal donor in the catalyst system is at least 1% by weight.
Patent CA-2270668-C (CA)
Title: Soft decision output decoder for decoding convolutionally encoded codewords
Inventor: SINDHUSHAYANA NAGABHUSHANA T
IPC: H04L1/00
Filed: 1997-11-06
Granted: 2006-06-13
Abstract: A soft decision output decoder (20) and decoding method. The decoeder (20) decodes a sequence of signals output by an encoder (12) and transmitted over a channel (17). The soft decision output decoder (20) includes a first "generalized" Viterbi decoder (24) for decoding the sequence of signals received over the channel during a forward iteration through a trellis representing the encoder output having a block length T. The first "generalized" Viterbi decoder (24) begins at an initial state to and provides a plurality of forward iteration state metrics a for each state at each time interval over a window of length 2L, where L is on the order of a few constraint lengths and 2L is less than a block length T. A second "generalized" Viterbi decoder decodes the sequence of signals received over the channel (17) during a backward iteration through the trellis. The second decoder (26) starts at a second time t2L and provides a plurality of backward iteration state metrics .beta. for each state at each time interval. A processor (28) then performs a dual maxima computation at each state using the forward state metric, the backward state metric and the branch metric for same to provide a measure of the likelihood that a particular sequence of data was transmitted by the encoder (12). By performing forward and backward Viterbi decoding with dual maxima computations at each node within a window moved over the treillis, the inventive decoder (20) provides the performance benefits associated with a LOG-MAP decoder while avoiding the excessive memory requirements of same.