baber/WOPTO huggingface dataset:
Patent CA-2249840-A1 (CA)
Title: Method for conflict resolution in a multiple access system for communications networks
Inventor: CHUAH MOOI CHOO
IPC: H04L69/14
Filed: 1998-10-08
Abstract: In a method for conflict resolution among remote hosts in a wireless network where remotes make bandwidth requests to the base station via uplink frames partitioned into one or more reservation minislots, a collision occurs where two or more remotes have transmitted a request in the same minislot. Each remote is characterized by a stack level, and only remotes with a stack level equal to 0 are permitted to transmit access request packets. Newly active remotes are allowed to join in with those remotes already having stack level 0 during any particular conflict resolution period by setting their stack levels to 0 and entering the request state. If the stack level of a remote is 0, the remote randomly picks a minislot for transmission of an access request. If the outcome is SUCCESS, and the queue at the remote is empty, the remote transmits the current packet after receiving a transmit permit and exits the request state. If the queue is not empty, then, after receiving a permit, the current packet is transmitted with a piggybacked reservation request for transmission of the next packet in the queue, continuing until the queue is empty. If the outcome of the reservation request was not SUCCESS, the remote participates in a random draw to determine whether to increment its stack level by 1 or leave it at 0. If the stack level of any remote is not 0, then in one embodiment if the outcome of theprevious reservation request was COLLIDED, the remote increments its stack levelby 1, otherwise decrementing it by 1. In an alternate embodiment, if the outcome of all the reservation requests during the previous cycle was COLLIDED for greater than or equal to some threshold, the remote increments its stack level by 1, otherwise decrementing it by 1. The number of reservation minislots available in any particular uplink frame may be dynamically changed based on the percentage of idle minislots and the total uplink queue length.
Patent CA-2253487-A1 (CA)
Inventor: RUCKI JOHN STANLEY
IPC: H04B17/40
Filed: 1998-11-09
Abstract: A wireless base station has a transmitter and receiver. Transmission signals are applied to an antenna through a transmit bandpass filter that is tuned for a transmit band of frequencies. Received signals from the antenna are applied to the receiver through a receive bandpass filter that is tuned for a receive band of frequencies An RF switching array consisting of four RF switches interconnects the output of the transmitter and the input of the receiver such that normal, loopback (self-test), and scanning modes can be performed. In the normal mode, the antenna is connected to the transmitter and receiver through the transmit and receive bandpass filters, respectively. The transmit and signal paths are effectively isolated from each other by three serially-connected open switches. In the loopback mode, the transmitter output is connected to the receiver input. In the scanning mode, the antenna is connected to the receiver through the transmit bandpass filter. The same set of interconnects provides for loopback and normal operation as well as the new scanning operation. The use of switches rather than couplers or couplers for the loopback function reduces noise and crosstalk between transmit and receive signal lines and lower losses in these lines.
Patent CA-2254422-A1 (CA)
Title: Stereo photographic system
Inventor: INABA MINORU
IPC: G02B27/22
Filed: 1998-11-24
Abstract: A stereo photographic system capable of reproducing a correct stereo image by improving the precision of positions for mounting the films on a stereo slide mount. Positions of the projected images of perforation of the films relative to the focusing plates are measured when a suitable perspective feeding is obtained by using a detecting device that projects the pictures of the films onto a pair of right and left focusing plates and that adjusts the gap between the right and left projected pictures to adjust the perspective feeling. A printer device 81 drives a printer head 87 based upon the position data that are measured, and prints indexes on a base frame 51a of the stereo slide mount to accomplish the positioning with respect to the perforations. When the films are mounted in a manner that the indexes of the base frame 51a are in agreement with the perforations of the films, the offset amount of the pictures of the films relative to the windows of the stereo slide mount is fixed to a position relatively equal to the offset amount of the projected pictures relative to the focusing plates detected by the detecting device.
Patent CA-2255747-A1 (CA)
Title: A cellulose composition, its preparation, and its use in foods
Inventor: MCGINLEY EMANUEL J
IPC: A23L29/20
Filed: 1997-05-27
Abstract: The invention is directed to a cellulose composition used as a texturizing, thickening, stabilizing, gelling or bulking agent for aqueous-based food systems comprising a combination of: (1) a finely divided cellulose component and (2) a surfactant component comprising one or more surfactants, in powder aggregate form; and to the use of this agent in reduced fat foods; and to the method of making the agent.
Patent CA-2256215-A1 (CA)
Inventor: HOMMELTOFT SVEN IVAR
IPC: C07C9/12
Filed: 1998-12-16
Abstract: A process for the removal of alkyl halides from a liquid hydrocarbon substrate by reaction of the halide with an isoalkane and/or aromatic hydrocarbons in presence of an acid catalyst supported on a solid support material.
Patent CA-2256566-A1 (CA)
Inventor: SCHNEIDER GOTTFRIED
IPC: H05H1/30
Filed: 1998-03-26
Abstract: The invention relates to a plasma torch system comprising a high-frequency plasma torch with a plasma torch device, wherein a plasma flame can be produced by supplying high-frequency energy, in addition to comprising a processing chamber, wherein workpieces can be positioned in order to enable processing by said plasma flame. In order to create a universally applicable system, the plasma torch system is provided with a height adjustment device enabling regulation of a vertical distance between the plasma torch device pertaining to the high-frequency torch and the workpiece which is to be processed.
Patent CA-2259526-A1 (CA)
Inventor: LYLE JOHN W
IPC: A61K9/70
Filed: 1997-07-02
Abstract: A nonocclusive drug delivery device includes (a) an open cell, flexible, oleophilic thermoplastic resin foam layer, (b) a substantially moisture vapor permeable, liquid impermeable, flexible thermoplastic barrier layer bonded to the upper surface of the foam layer, (c) a pressure sensitive adhesive layer and (d) a drug composition comprising a drug and an oleophilic drug delivery vehicle.
Patent CA-2260759-A1 (CA)
Inventor: COCHRAN MARK D
IPC: C07K14/11
Filed: 1997-07-25
Abstract: L'invention concerne un virus de recombinaison de la variole porcine comprenant un ADN étranger introduit dans un génome de virus de la variole porcine, cet ADN étranger étant introduit dans (a) un site AccI à l'intérieur d'une zone correspondant à un sous-fragment de 3,2 Kb de HindIII à BgIII du fragment de HindIII M et (b) un site EcoRI à l'intérieur d'une zone correspondant à un sous-fragment de 3,2 Kb du fragment de HindIII K contenant à la fois un site HindIII et EcoRI, du génome du virus de la variole porcine et étant capable d'être exprimé dans une cellule hôte dans laquelle on a introduit le virus. Elle concerne également des vaccins et des procédés d'immunisation contre le virus de recombinaison de la variole porcine.
Patent CA-2261722-A1 (CA)
Title: A toothbrush
Inventor: SOLANKI SANJAY AMRATLAL
IPC: A46B5/00
Filed: 1997-08-01
Abstract: A toothbrush having a handle (4) and a head (1), the head (1) being of length L and having longitudinal and transverse axes, the head (1) having a bristle-bearing surface (7) with a plurality of tufts (6) extending therefrom, wherein the tufts (6) are arranged in a plurality of groups N, which are separated from each other by a transverse gap (8) of from 1.3 mm to 5 mm, the distance between tufts (6) within a group being less than 1.3 mm, and wherein at least 50 % of the tufts (6) are characterized by there being no other tuft (6) within 1.3 mm, measured along a line parallel to the transverse axis, for at least 50 % of the width of the tuft (6). Preferably, each group is in the form of a crescent shaped array and tufts (6) are generally perpendicular to the toothbrush head (1). The arrangement allows for independent movement of bristle tufts (6), particularly whilst using the Bass technique for toothbrushing, yet maintains a high density of tufts (6) on the toothbrush head (1).
Patent CA-2262233-A1 (CA)
Title: Gas turbine starting control system
Inventor: HAMANA HIROYUKI
IPC: F02C3/30
Filed: 1999-02-18
Abstract: A gas turbine starting control system is provided, wherein starting power is increased while an inlet gas temperature of the turbine is prevented from rising during starting of the gas turbine, so that a starting motor can be reduced in size and the system cost can also be reduced.      Accordingly, a gas turbine starting control system for a gas turbine in which starting power is supplied to a rotational shaft of a compressor and a turbine by using a starting motor in order to start the compressor and the turbine, comprises: a steam pipe for supplying steam to a combustor in the gas turbine; a temperature detector for detecting an inlet gas temperature of the turbine; a steam control valve provided at the steam pipe for opening and closing the steam pipe; and a valve controlling unit for controlling the opening degree of the steam control valve in response to detection signals of the inlet gas temperature from the temperature detector.
Patent CA-2263145-A1 (CA)
Inventor: MCCROSSEN PETER CHARLES
IPC: B65D53/08
Filed: 1997-08-08
Abstract: Récipient (40) avec un corps (41) présentant une extrémité ouverte (42) entouré d'une collerette (43) dirigée vers l'extérieur et vers le bas (43). Un élément de d'obturation (44) est conçu pour être fixé au corps du récipient (41). Cet élément d'obturation (44) présente une partie de serrage de la collerette (48). Lorsque l'élément d'obturation (44) est placé sur le corps (41), la partie de serrage (48) réalise une fermeture hermétique au moins avec la surface externe de la collerette (43) en exerçant sur cette dernière une pression dirigée vers l'intérieur. La partie de serrage (48) peut également être adaptée de manière à obturer l'extrémité ouverte (42) du corps (41) et la surface intérieure du corps du récipient (41) située à proximité immédiate de l'extrémité ouverte (42). L'invention concerne également une bague filetée (10) pouvant être montée sur l'extrémité ouverte d'un récipient. Cette bague filetée est retenue par un moyen de fixation composé d'un bord continu formant un crochet (13), établissant un contact hermétique avec l'extrémité ouverte du récipient et constituant ainsi un moyen permettant de fixer facilement et hermétiquement les éléments d'obturation aux récipients.
Patent CA-2264196-A1 (CA)
Title: Drum-like container of plastic and process and device for its production
Inventor: RICHTER GUENTER
IPC: B29C48/475
Filed: 1997-08-23
Abstract: This invention concerns a drum-like container (1) made of a discontinuously extruded hose-like preform of thermoplastic in a blow molding process. This drum-like container has a wall consisting of an inner layer, an outer layer and at least one intermediate layer. To effect that the wall consist of at least three layers and that it be possible to monitor the fill level of the fill material, the wall has a visual indicator strip (2) out of translucent plastic running in the axial direction.
Patent CA-2265518-A1 (CA)
Inventor: CORREA ROBERTO
IPC: C12N15/42
Filed: 1997-09-08
Abstract: L'invention concerne des vaccins contre les virus de la fièvre aphteuse à base de peptides présentant une séquence d'au moins huit aminoacides correspondant à une séquence partielle issue de la région protéique non structurale du virus de la fièvre aphteuse, qui a été sélectionnée par immunoréactivité avec des anticorps spécifiques du virus de la fièvre aphteuse ou par immunoréactivité avec des lymphocytes T spécifiques du virus de la fièvre aphteuse, ainsi que leur production et leur utilisation.
Patent CA-2266089-A1 (CA)
Title: Methods for producing nucleoside derivatives and intermediates therefor
Inventor: TAKAMATSU SATOSHI
IPC: C07D473/00
Filed: 1999-03-17
Abstract: Novel intermediates of nucleoside derivatives, of which the 6-position of the nucleic acid base moiety is substituted with a halogen atom, are produced. Using those novel intermediates, even substrates, of which the 3'-position of the saccharide moiety is deoxylated, can be substituted at the 2'-position at an extremely high yield. Specifically, by subjecting a 3'-deoxy derivative of inosine to 6-halogenation to give a 6-halide of the derivative, and then subjecting it to 2'-deoxylation/substitution with a fluorine atom or the like, followed by further subjecting it to substitution with an amino group, a hydroxyl group or any other intended substituent at the 6-positioned halogen atom, nucleoside derivatives are produced at a high yield.      Methods for producing nucleoside derivatives including 9-(2,3-dideoxy-2-fluoro-.beta.-D-threo-pentofuranosyl)adenine (FddA) and their related compounds, in a simplified manner, at a high yield and at low costs , and especially Economical methods for substituting substrates, of which the 3'-position of the saccharide moiety is deoxylated, at the 2'-position to produce those nucleoside derivatives on an industrial scale are also provided.
Patent CA-2266476-A1 (CA)
Inventor: STEININGER JEFFREY A
IPC: H01R13/68
Filed: 1997-09-18
Abstract: An electrical connector (10) for connecting an electrical plug (30) having prongs to circuitry (20) has a pair of electrically conductive sockets (40, 50) adapted to receive the plug prongs (34, 35). Each socket has an inner leg (42, 52), an outer leg (44, 54), an a portion (46, 56) which is narrower than a plug prong. An elastically deformable supporting member (60) supports the sockets with a pair of cantilevered inner supports (70, 80), which support the inner legs and define a cavity (68) between the sockets into which the inner supports can be deflected. This allows the inner legs to deflect when the plug prongs are inserted into the sockets past the narrow portions. An intermediate member (90) is disposed in the cavity and contacts at least one inner support at a fulcrum point (76, 86) at which the intermediate member opposes deflection of the inner support into the cavity, causing the corresponding inner leg to grip the plug prong with a retention force. If desired, a thermal cutoff mechanism can interrupt the electrical connection between the circuitry and one of the sockets when the intermediate member exceeds a threshold temperature, thereby disconnecting the plug.
Patent CA-2268074-A1 (CA)
Title: Enceinte de protection pour conteneur de type pot ou bac
Inventor: AVOT BERNARDUS JOHANNES MARTIN
IPC: A47G7/08
Filed: 1997-10-07
Abstract: Cette invention concerne un enceinte de protection pour un conteneur de type pot ou de type bac, lequel conteneur est destiné à recevoir des plantes, des fleurs, des bulbes, des fruits ou autres, et possède une paroi tubulaire close se terminant en un bord orienté vers l'extérieur, ainsi qu'une paroi inférieure comportant des ouvertures. L'enceinte de protection possède une paroi circonférentielle close qui se termine en un rebord de type col orienté vers l'extérieur. L'enceinte, qui est faite d'un matériau plastique élastique, possède également une paroi de fond ne comportant pas d'ouvertures. Le conteneur et l'enceinte de protection sont couplés l'un à l'autre à l'aide d'un élément annulaire fait d'un matériau élastique. Cet élément possède une paroi annulaire dans laquelle sont pratiquées au moins deux fentes qui s'étendent le long de la circonférence. Ces fentes vont chacune recevoir une partie du rebord de type col, ainsi qu'une partie du bord qui repose sur ce dernier.
Patent CA-2268925-A1 (CA)
Inventor: OLSSON BJOERN
IPC: H04Q11/04
Filed: 1997-10-17
Abstract: A telecommunications network (10) comprises a set of service provider/operator domains (20), including mobile telecommunications domains (20A-20C). A calloriginating domain (20F) accesses a mobile subscriber number portability database (30F) to obtain the address of the gateway node (GMSC) of the telecommunications domain which currently serves a called mobile subscriber having a mobile station (70), and optionally the address of the home location register (HLR) of the called mobile subscriber. The address of the gateway node obtained from the database (and optionally the address of the home location register) are included along with the directory number (MSISDN) or IMSI of the called mobile subscriber in a routing message for completing the call. When changing service providers (e.g., changing to a new domain), the mobile subscriber number portability database is updated to reflect the change. Access of the database and usage of the address of the gateway node of the new domain in the routing message permit the mobile subscriber to retain the same MSISDN when changing service providers.
Patent CA-2277383-A1 (CA)
Title: Microwave thermal shock metallurgy
Inventor: RIDLER ROLAND R H
IPC: C22B1/00
Filed: 1999-07-15
Abstract: A method to enhance the extraction of an element from an ore by subjecting the element bearing material to a thermal shock. The thermal shock is sufficient to cause microfracturing of the material without significant change in the chemical structure, thereby reducing or essentially eliminating the refractory nature of the ore. The microfractured material may then be processed in a conventional manner at a relatively higher yield, than would otherwise be the case.
Patent CA-2277671-A1 (CA)
Title: Control apparatus and control method for reformer
Inventor: YAMASHITA MASASHI
IPC: H01M8/06
Filed: 1999-07-19
Abstract: A control apparatus can maintain a substantially constant temperature of a reforming reaction in which a partial oxidation reaction occurs. The control apparatus can be used for a reformer that reforms reformate fuel into fuel by an endothermic reforming reaction and a partial oxidation reforming reaction. The amount of oxygen supplied for the partial oxidation reaction is determined based on an amount of the raw material and on theoretical endothermic values and exothermic values of the respective reforming reaction and partial oxidation reaction.
Patent CA-2277737-A1 (CA)
Inventor: DE MARCHI SILVERIO
IPC: G02B6/38
Filed: 1999-07-20
Abstract: A sleeve part (1) for a plug connection for fibre optics is provided with an opening (2) for accommodating a plug part (21). The plug part (21) is insertable in the direction of an insertion axis (A) into the sleeve part (1). The sleeve part comprises a sleeve (3) for receiving a plug pin of the plug part (21). The sleeve part (1) is furthermore provided with a securing element (4) with a coding consisting of projections (5) and/or reliefs (6). The securement section (4) is arranged on at least one separately formed coding element (7, 7'). The coding element (7, 7') in a snap-on direction (R) roughly perpendicular to the insertion axis (A) can be snapped on the sleeve part (3).
Patent CA-2280636-A1 (CA)
Title: Water dispersion type water and oil repellent composition
Inventor: MAEKAWA TAKASHIGE
IPC: C08G18/81
Filed: 1999-08-23
Abstract: A water dispersion type water and oil repellent composition obtained by polymerizing the following polymerizable monomer mixture (b) in the presence of a compound (a) having a blocked isocyanate group and no polymerizable unsaturated group:   (b) a mixture comprising a polymerizable monomer having a polyfluoroalkyl group and a polymerizable monomer having no polyfluoroalkyl group.
Patent CA-2282042-A1 (CA)
Title: Solid phase enzyme kinetics screening in microcolonies
Inventor: DILWORTH MICHAEL R
IPC: C12Q1/00
Filed: 1999-08-30
Abstract: A MicroColonylmager instrument and solid phase methods to screen cells expressing mutagenized enzymes for enhanced activity. The MicroColonylmager instument and methods permit high throughput screening of enzyme libraries by time course analyses of single-pixels, using either absorption, fluorescence or FRET. This high throughput assay can detect small differences in enzyme rates within microcolonies grown at a nearly confluent density on an assay disk. Each microcolony is analyzed simultaneously at single-pixel resolution, requiring less than 100 nl substrate/measurement. By simultaneously assaying different substrates tagged with spectrally distinct chromogenic or fluorogenic reporters, the substrate specificity of an enzyme can be changed.
Patent CA-2283040-A1 (CA)
Title: Mouldings consisting of pyrogenic mixed oxide and use thereof
Inventor: MANGOLD HELMUT
IPC: B01J37/00
Filed: 1999-09-23
Abstract: Mouldings based on pyrogenically produced mixed oxide having the following physicochemical parameters:        External diameter 0.8-25 mm BET surface area  5-400 m2/g Pore volume       0.2-1.8 ml/g Fracture strength 5 to 350 N      Composition       At least two from the group SiO2, Al2O3, TiO2 and ZrO2 in any desired combination, but with the exception of SiO2/Al2O3 mixed oxides, in which > 75 wt.% of SiO2 is present.      Other constituents < 1 wt.%      Bulk density       250-1500 g/l are produced by homogenising pyrogenically produced mixed oxide as desired with one or more compounds from the group methylcellulose, methylhydroxyethylcellulose, wax, polyethylene glycol, magnesium stearate or aluminium stearate with the addition of water, drying the product at a temperature of 70 - 150 °C, optionally comminuting it to yield a powder, optionally compression moulding the powder to yield mouldings and performing heat treatment for a period of 0.5 to 10 hours at a temperature of 400 to 1200 °C.        These mouldings may be used as a catalyst or catalyst support for hydrating ethylene and propylene.
Patent CA-2283449-A1 (CA)
Title: Methods and compositions for protecting against cardiac ischemia by administering adenosine a2a receptor antagonists
Inventor: JACOBSON KENNETH A
IPC: A61K31/522
Filed: 1998-03-06
Abstract: Materials and methods for reducing or preventing ischemic damage of the heart are disclosed. A preferred embodiment of the invention comprises the administration of a specific A2a receptor antagonist, 8-(3-chlorostyryl) caffeine, to patients suffering from ischemic damage or at risk for the same.
Patent CA-2284353-A1 (CA)
Title: Cryogenic rectification system with high strength and high capacity packing
Inventor: BILLINGHAM JOHN FREDRIC
IPC: F28F25/08
Filed: 1999-10-01
Abstract: A cryogenic rectification system and a packing module and column suitable for cryogenic rectification having packing sheets with top and bottom modifications in alternating sequence and preferably having top and bottom edges terminating in planes wherein capacity and mass transfer efficiency is enhanced and mechanical strength is not compromised.
Patent CA-2286135-A1 (CA)
Title: Method and device in tail threading
Inventor: AHVENNIEMI VESA
IPC: B65H20/00
Filed: 1999-02-15
Abstract: The invention relates to a method in tail threading, in which a lead-in strip, tail (T) separated from the edge of a paper web is guided between two elongated mobile means in a paper web conveying machine and transferred forward between these two means along a given portion in the machine direction of the machine. The mobile means are belts (1, 2) between which the tail is transported. The neutral axes (N) of the belts (1,2) are substantially on the same level.