baber/WOPTO huggingface dataset:
Patent CA-2246146-A1 (CA)
Title: Direct digital phase synthesis
Inventor: BOGDAN WLADYSLAW
IPC: H03L7/14
Filed: 1998-08-27
Abstract: A universal synchronizer for use in a variety of telecommunications systems based on direct digital phase synthesis (DDPS) include digital and analog PLLs. The synchronizer may be used for wireless, optical, or wireline transmission systems and for a wide ranges of data rates. Digital phase detectors are used in the digital PLLs for comparing the phase of the local clock f L with the phase of a respective digital reference clock, and provides a respective phase error signal. A digital phase synthesis unit receives the phase error signal and a target phase error and produces a first and a second set of control signals for driving an error driver. The error driver generates the control voltage for adjusting the frequency of a VCXO that is used for all PLLs, to lock the respective PLL. The first set of control signal generates the control voltage for the digital PLLs, and the second set of control signals generates the control voltage for the analog PLLs and for the acquisition mode of operation of all PLLs. The frequency and the width of the members of the first and second set of control signals are adjusted with a density width code, which is calculated for a target value and for the specific configuration of the synchronizer.
Patent CA-2246653-A1 (CA)
Title: Copolymere greffe par polymerisation radicalaire en presence de radicaux stables, sa preparation et ses applications
Inventor: BOUTEVIN BERNARD
IPC: C08F291/00
Filed: 1998-10-02
Abstract: La présente invention porte sur un copolymère greffé portant des greffons de formule -O-PM1-(PM2)-T, où PM1 représente une séquence polymère issue d'au moins un monomère M1 (co)polymérisable par voie radicalaire; PM2, éventuellement présent, représente une séquence polymère issue d'au moins un monomère M2 (co)polymérisable par voie radicalaire; et T représente le reste d'un radical stable T~. Pour préparer le copolymère, on conduit une polymérisation redicalaire par voie thermique d'au moins un monomère M1 copolymérisable par voie radicalaire à l'aide d'au moins un macroamorceur de la formule (IV), et en présence d'au moins un radical stable T~, pour obtenir un copolymère greffé par des greffons de formule O-PM1-T, et, le cas échéant, on ajoute au milieu au moins un monomère M2 copolymérisable par voie radicalaire et on poursuit la (co)polymérisation pour obtenir un copolymère greffé par des greffons de formule -O-PM1-PM2-T. R20 = H ou radical hydrocarboné; x, y et z représentent chacun le pourcentage de fonctions (voir fig. I) respectivement -¢O-O-H!, -¢O-O-R20! ou -¢O-O!-, chacun d'eux pouvant varier de 0 a 100%, les fonctions -O-O- étant attachées à la chaîne de (co)polymère tronc directement ou par l'intermédiaire de groupements de liaison, ces derniers étant alors considérés comme entrant dans la définition du (co)polymère tronc.
Patent CA-2248156-A1 (CA)
Title: Article absorbant les hydrocarbures et methodes pour sa fabrication et son utilisation
Inventor: GRIESBACH HENRY LOUIS III
IPC: C02F1/40
Filed: 1997-03-26
Abstract: Article absorbant utilisé pour le nettoyage des nappes d'hydrocarbures, qui comprend une première couche externe exposée de non-tissé polymère fibreux, hydrophobe et perméable aux liquides, et un corps absorbant adjacent à la couche externe exposée et contenant un matériau à base de cellulose absorbant les hydrocarbures. De préférence, l'article aura une deuxième couche externe exposée, faite en non-tissé polymère hydrophobe, le corps absorbant étant situé entre la première et la deuxième couche externe exposée. L'article absorbant est placé sur une couche d'hydrocarbures qui se trouve à la surface de l'eau afin de nettoyer la nappe d'hydrocarbures. L'article absorbant absorbe sélectivement les hydrocarbures à la surface de l'eau sans absorber cette dernière car la couche externe hydrophobe repousse l'eau mais attire les hydrocarbures, qu'elle dirige vers le corps absorbant les hydrocarbures placé entre les deux couches externes exposées. Cette invention permet de réaliser des économies non négligeables en matière de coûts et de ressources non renouvelables, car une grande partie du produit est faite avec un matériau à base de cellulose, qui est renouvelable, tandis que seule une petite partie du produit est faite en non-tissé polymère, qui n'est pas renouvelable.
Patent CA-2248739-A1 (CA)
Inventor: TACK JOHANNES
IPC: A61K49/22
Filed: 1997-03-11
Abstract: The invention concerns gas-containing micro- and nanoparticles of biodegradable synthetic polymers based on water-repellent polysaccharides. The invention further concerns ultrasound diagnostic agents containing these particles, and a process for producing the particles and agents.
Patent CA-2249421-A1 (CA)
Title: Method for adhering a metallization to a substrate
Inventor: RAGHAVA RAM SINGH
IPC: H05K3/16
Filed: 1998-10-02
Abstract: There is disclosed herein a method for adhering metallizations to a substrate, comprising the steps of: (1) providing a substrate having a first surface; (2) applying a coating atop the first surface, such that the coating has a second surface bonded to the first surface, and a third surface generally conforming with the second surface; (3) etching away material from the third surface, so as to roughen and form pits in the third surface; and (4) attaching a metallization to the pits in the third surface by plating, sputtering, or similar means.
Patent CA-2250887-A1 (CA)
Title: Modified atmosphere package
Inventor: DELDUCA GARY R
IPC: A23B4/16
Filed: 1997-03-26
Abstract: A modified atmosphere packaging system and method creates a modified atmosphere in a package including an inner container and an outer container. The inner container is composed at least partially of a polymeric material substantially permeable to oxygen forming a tray, while the outer container is composed of a polymeric material substantially impermeable to oxygen. After a food product such as raw meat is placed within the container, the inner container is flushed with a desired mixture of gases to substantially remove oxygen from the inner container. The flushed inner container is then sealed and inserted into the outer container without sealing the outer container. Next, the outer container is flushed to remove oxygen. After flushing the outer container, the outer container is sealed.  An oxygen scavenger is provided in the package to substantially absorb any residual oxygen within the package.
Patent CA-2252569-A1 (CA)
Inventor: DODD JOHN
IPC: C22C38/44
Filed: 1997-02-20
Abstract: A refiner disk or disk segment is cast from a stainless steel alloy having a composition of 0.2 percent to 0.4 percent carbon, 0.5 to 1.5 percent manganese, 0.5 percent to 1.5 percent silicon, a maximum of 0.05 percent sulfur, a maximum of 0.05 percent phosphorus, 14 percent to 18 percent chromium, 2 percent to 5 percent nickel, 2 percent to 5 percent copper, a maximum of 1 percent molybdenum, and 1.5 percent to 2.5 percent niobium, the balance being iron. The Niobium forms discrete carbides at high temperatures during the melting process. Upon cooling, the carbides are distributed evenly throughout the structure. This resultant alloy provides toughness and corrosion resistance like a lower carbon alloy plus increased wear resistance due to the carbide formation. The alloy utilizes chromium to impart corrosion resistance, the process of tying up carbon as discrete, non-chromium carbides increases the amount of chromium present to provide corrosion resistance.
Patent CA-2252830-A1 (CA)
Title: Uv curable composition
Inventor: ERICKSON JAMES ROBERT
IPC: C09J153/00
Filed: 1997-04-25
Abstract: The present invention relates to UV curable composition comprising a monohydroxylated epoxidized polydiene polymer and a photoinitiator selected from the group consisting of diarylhalide salts of general formula (I) wherein X is a complex metal halide anion or a complex halide anion of a strong protonic acid; Y is (a) or (b) wherein R is hydrogen, aryl, alkyl or an alkyl halide; Z is I, Br or Cl; and n is an integer of at least 1. The invention further relates to a process for preparing the UV curable composition in the absence of a non-aqueous solvent, to UV cured compositions and articles containing the UV cured compositions.
Patent CA-2253170-A1 (CA)
Inventor: MUTHIAH JENO
IPC: C08G59/50
Filed: 1998-11-02
Abstract: A mixture of a self-curing epoxy resin having an equivalent weight of from about 100 to about 700, a melt viscosity of from about 200 to about 2000 centipoise at 150°C and a low temperature curing agent is extruded as one component at a temperature below 104°C (220°F) and the extrudate is cooled and pulverized to form a low temperature of from about 107°C (225°F) to about 149°C (300°F) and produces a coating having an exceptionally smooth surface with either a low or high gloss.
Patent CA-2255517-A1 (CA)
Inventor: STROMBERG C BERTIL
IPC: D21C7/14
Filed: 1998-12-08
Abstract: A vertical pulp treatment vessel having a top and bottom, such as a continuous or batch digester, has at least a first substantially annular screen assembly disposed within the vessel between the top and bottom. A first substantially annular header is associated with the first screen assembly and first and second withdrawal conduits extend outwardly from the header and are in fluid communication with it. A barrier, such as a radially extending plate, is disposed in the header between the withdrawal conduits, the withdrawal conduits being adjacent each other (typically spaced from each other between about 2-30°, e.g. between about 10-20°). A small, compared to the prior art, platform is provided for allowing access to the withdrawal conduits, and automatically controlled valves or like structures in or associated with the conduits, the platform having an arcuate extent of less than 180°, typically less than about 110° (e.g. about 90° or less). Typically, a second annular screen assembly, like thefirst screen assembly, with third and fourth withdrawal conduits circumferentially spaced from each other between about 2-30°, and have a centerline that is circumferentially spaced from the first and second withdrawal conduit centerline less than about 110° (e.g. about 80-110°, typically about 90°), so that on the single platform the four withdrawal conduits, and the automatically operated valves associated therewith, may be accessed.
Patent CA-2257818-A1 (CA)
Title: Elevated pressure polymerization processes with late transition metal catalyst systems
Inventor: CANICH JO ANN M
IPC: B01J31/18
Filed: 1997-06-17
Abstract: The invention encompasses late transition metal catalyst systems and their use in polymerization processes, particularly in solution, 2-phase suspension and super-critical phase polymerization of ethylene-containing polymers. Preferred embodiments include the use of a late transition metal catalyst system comprising a Group 9, 10, or 11 metal complex stabilized by a bidentate ligand structure for polymerization under elevated ethylene pressure, or concentration, conditions.
Patent CA-2257914-A1 (CA)
Inventor: GOUBET SANDRINE
IPC: C04B41/49
Filed: 1997-06-05
Abstract: The emulsion comprises: 1) at least one resin M alpha D beta T gamma Q delta (OR) epsilon  (I) where: M=R<1>R<2>R<3>SiO1/2, D1 = R<4>R<5>SiO2/2 T = R<6>SiO3/2 Q = SiO4/2; 2) the reaction product between: 2a) one or several aromatic amines or polyfunctional aliphatics from 2 to 25 carbon atoms; 2b) one or several carboxylic acids or anhydrides containing 3 to 22 carbon atoms; 2c) at least one cross-linking agent which is a water-soluble metal complex. The invention is useful for waterproofing surfaces, in particular building materials paricularly stone, cement, concrete, mortar, bricks, tiles, wood, in which the above emulsion is used.
Patent CA-2260021-A1 (CA)
Inventor: HEILLAUT CHRISTIAN
IPC: G06K17/00
Filed: 1997-07-10
Abstract: A coded digital message is used for modulating a voltage supplying fluorescent tubes (5). The modulation is effected, either in frequency, or pulse duration synchronised on the network. In the first case a direct voltage is strobed and the fluorescent tubes (5) are supplied by this voltage, the strobing frequency ranging from single to double depending on the logical state of the signals constituting the message. In the second case, half-cycles on the network double frequency are applied to the fluorescent tubes (5) synchronised with the alternation of the network frequency, for a first logical state, and dephased for a second logical state. The receiver is an electronic label (7) comprising a photoelectric cell (70), a decoder, a microcontroller and a display (71). The invention is applicable particularly in the updating of electronic labels in a departmental store.
Patent CA-2262163-A1 (CA)
Inventor: DRAKE MICHAEL
IPC: F21V17/06
Filed: 1999-02-18
Abstract: The invention relates to an improved outdoor light for lighting an outdoor area. More specifically, the present invention uses a rotatable shield that selectively controls the area to be illuminated by the light, an adjustable control that extends the period of operation of the light, and a unique mounting system that makes the light easier to install.      The mounting system used on the present invention overcomes these difficulties by providing a bracket to which the light is first pivotally mounted and held in place. Then, the device may be wired and permanently installed.
Patent CA-2262329-A1 (CA)
Title: Synchrodyning of vsb and qam final i-f signals supplied by separate converters in a qam/vsb digital tv receiver
Inventor: LIMBERG ALLEN LEROY
IPC: H04N5/455
Filed: 1999-02-19
Abstract: A QAM/VSB digital television (DTV) receiver of plural conversion type uses the same circuitry up to a penultimate IF amplifier for receiving DTV signals no matter whether they use QAM or VSB modulation. The converter used for generating final IF signals when QAM modulation is received and the converter used for generating final IF signals when VSB modulation is received have respective mixers and respective local oscillators with separate automatic frequency and phase control. The use of such separate converters avoids a lock-out from VSB reception mode that otherwise can occur during the reception of DTV signals with VSB modulation.
Patent CA-2266772-A1 (CA)
Inventor: STUDER HANS-JOERG
IPC: B65F1/16
Filed: 1996-10-11
Abstract: Device for storing polluted and/or contaminated materials (14), comprising a container (1) which can be closed by at least one swivelling, opening cover (2) and a drive mechanism enabling said cover to be opened temporarily. A proximity sensor (50) located in cover opening area controls an electric motor (22) which actuates a rocking lever via a control cable (25, 26, 29) in such a way that the rocking lever swings into rest position by virtue of the cover's own weight and the wound cable (26) rolls off onto a roller (25) placed on the axis of the electric motor and shuts the cover.
Patent CA-2267594-A1 (CA)
Title: Method of making pollutant harmless and apparatus for conducting the method
Inventor: MIHARA RYOHEI
IPC: A62D3/40
Filed: 1999-03-29
Abstract: This invention relates to a method of making a pollutant harmless by treating a material to be treated containing the pollutant. The method comprises the steps of: heating the material in a pressure resistant vessel hermetically to obtain a heated material; supplying the heated material from the vessel to a nozzle; and jetting out the material from the nozzle to collide against a collecting member arranged opposite to the nozzle.
Patent CA-2269640-A1 (CA)
Title: Enzymatic cofactor cycling using soluble pyridine nucleotide transhydrogenase
Inventor: BRUCE NEIL CHARLES
IPC: C12N1/21
Filed: 1997-10-29
Abstract: In an enzymic reaction involving a pyridine nucleotide cofactor, an enzyme is used that has sequence of greater than 70 % identity to SEQ  ID No: 2 and capable of transferring reducing equivalents between pyridine nucleotide cofactors.  Alternatively, a cell transformed to express the enzyme may be used.
Patent CA-2271138-A1 (CA)
Inventor: RIX GEOFFREY C
IPC: C08G73/16
Filed: 1997-11-13
Abstract: L'invention concerne un procédé permettant de préparer des résines de polyester-imides contenant des groupes hydroxyle et carboxyle, qui comprennent comme constituants monomères: (A) des composés formateurs d'imides comportant au moins deux groupes amino primaires et/ou au moins deux groupes isocyanates ou bien des composés formateurs d'imides comportant au moins un groupe amino primaire et/ou au moins un groupe isocyanate et au moins un autre groupe fonctionnel, sélectionné parmi hydroxy, carboxy et/ou anhydride d'acide carboxylique; (B) des acides polycarboxyliques et/ou leurs anhydrides et/ou leurs esters: ainsi que (C) des polyols. Ce procédé se caractérise en ce que (I) le constituant (A) est mis à réagir avec une partie du constituant (B) pour former un polyimide; (II) le polyimide obtenu selon l'étape (I) est mis à réagir avec le constituant (C) pour former un polyester-imide et pour finir, (III) le polyester-imide obtenu selon l'étape (II) est mis à réagir avec la partie résiduelle du constituant (B) pour former un polyester-imide contenant des groupes hydroxyle et carboxyle. L'invention concerne en outre l'utilisation des polyester-imides préparés selon l'invention, comme liants et vernis pour fils de fer, contenant des polyesterimides qui comprennent des groupes hydroxyle et carboxyle avec un indice d'acide ?80 mg KOH/g, pouvant être obtenus selon ledit procédé.
Patent CA-2272022-A1 (CA)
Title: Torque amplification for ice breaking in an electric torque motor
Inventor: TURNER DAVID
IPC: H02K26/00
Filed: 1999-05-11
Abstract: A method of amplifying the torque output by an electric torque motor (10) of a system such as a vehicle electronic throttle control system. Upon the formation of ice on and around the throttle plate (T) of an electronic throttle system, the torque output by the torque motor (10) connected to rotate the throttle plate (T) is amplified from a normal operating torque to an amplified torque sufficient to overcome the ice or other obstruction. The method includes applying either a clockwise or counter-clockwise direction torque to the rotor (38) of the torque motor (10) to twist the output shaft (34) connected to the stuck throttle plate (T). The torque applied to the rotor (38) is then reversed so that the other of the clockwise and counter-clockwise direction of torque is applied to the rotor (38). The foregoing torque-application steps are repeated in succession at a select frequency equal to the natural frequency of the mechanical system of which the motor (10) and throttle plate (T) are parts. As such, a resonant condition is established and the torque applied to the rotor (38) is amplified to a level sufficient to overcome the ice or other obstruction. A torque motor system is provided to implement the torque amplification method.
Patent CA-2273494-A1 (CA)
Title: Dispositif medical a aiguille escamotable
Inventor: HALSETH THOR R
IPC: A61M25/06
Filed: 1997-12-05
Abstract: La présente invention concerne un dispositif dont l'aiguille (15) s'escamote automatiquement, un verrouillage de sécurité (47) empêchant l'escamotage prématuré ou par mégarde de l'aiguille (15). Selon une réalisation préférée, ce dispositif médical comporte un cathéter intraveineux ou un dispositif d'insertion à fil de guidage (611) dont une pointe se régle axialement pendant le montage de façon à avoir une longueur uniforme de l'aiguille dépassant vers l'arrière du dispositif.
Patent CA-2276637-A1 (CA)
Title: Multipersonality automated transaction execution system
Inventor: SINTON E JOHN R
IPC: G07F19/00
Filed: 1999-06-30
Abstract: A dynamically branded transaction execution system including member institutions, an automated shared transaction terminal, and a processing and routing system to connect and process information between the member institutions and the automated terminals. Each of the terminals contains an identification device, user interface, a material device and a device for storing data. When a customer uses one of the transaction terminals, the user interface is subsequently modified to a full service transaction machine. The transaction terminal is dynamically branded such that the branch behaves as though it were owned by the member institution for the duration of the customers transaction and provides the full service desired by the customers of the selected member institution. Different forms of communication can include a display, a keypad or touch pad, an audio system and a video system.  Different ownership and licensing arrangements of the transaction execution system with a plurality of membership institutions is provided.
Patent CA-2277672-A1 (CA)
Inventor: CHIN KAY
IPC: G06F3/0354
Filed: 1999-07-14
Abstract: The present invention relates to an improved structure of a shield used in a computer mouse. The shield includes a generating part and a receiving part which are formed by integration and arranged linearly for constructing the reflecting shield for the mouse. To make the manual work for inserting the shield into the circuit board of the mouse can be done by just one action of composition to avoid the time of actions of repeatedly inserting electrical elements into the circuit board and to reduce the production cost.
Patent CA-2277746-A1 (CA)
Title: Relative pressure sensor
Inventor: DREWES ULFERT
IPC: G01L9/08
Filed: 1999-07-20
Abstract: In this flush-diaphragm relative pressure sensor (1), the reference air reaches its current dew point before getting into the interior of the housing. The sensor has a capacitive, resistive, or piezoelectric sensing element (2) with a diaphragm (21) an external surface of which comes into direct contact with a medium under pressure. A housing (7) has an interior space (71) and a front portion (72) open across the interior space in the vicinity of which the diaphragm closes the interior space such that the front portion projects beyond the diaphragm. Further, the housing has a bore (721) extending through the front portion from an outer side thereof to the interior space for guiding the reference air. The bore is closed from the outer side with an open-pore, highly heat-conducting and hydrophobic filter (8), so that the filter and the diaphragm are at the same or nearly the same temperature. The filter can be made of a sintered metal, e.g. high-grade steel or bronze, or of a metallic sponge, e.g. titanium or zirconium.
Patent CA-2278754-A1 (CA)
Title: Procede d'utilisation de defauts transitoires afin de verifier la securite d'un systeme cryptographique
Inventor: DE MILLO RICHARD A
IPC: G09C1/00
Filed: 1998-02-04
Abstract: Procédé utile servant à vérifier l'intégrité d'un système cryptographique et consistant à mettre en application des sorties erronées afin d'obtenir une information secrète (700). Dans certaines combinaisons à signatures basées sur le théorème chinois du reste, une signature correcte d'un message et une signature erronée du même message permettent d'obtenir le module sans difficultés. Si le contenu du message est connu, on peut déchiffrer ce type de systèmes cryptographiques avec une seule signature erronée du message. On peut déchiffrer certaines autres combinaisons à autorisations au moyen de l'analyse de certaines sorties erronées provoquées par un type particulier d'erreur appelé faute de registre. Un expert en sécurité ou un concepteur de système cryptographique peuvent provoquer intentionnellement la génération d'un calcul défectueux par un dispositif anti-fraude, en soumettant ce dernier, tel qu'une carte de crédit, à une contrainte physique, telle que certains types de rayonnement, de niveaux de tensions atypiques, ou à un rythme d'horloge supérieur à celui pour lequel le dispositif a été conçu. Les systèmes cryptographiques devraient être insensibles aux attaques décrites ci-dessus. Dans le cas contraire, il conviendrait de modifier ou d'éliminer ces systèmes.