baber/WOPTO huggingface dataset:
Patent CA-2236884-A1 (CA)
Title: Negative trimming of fiber optic winding
Inventor: GOETTSCHE RANDY P
IPC: G01C19/72
Filed: 1996-12-12
Abstract: In a fiber optic coil arrangement for use in rotation sensors, for example, axial or radial errors can be reduced or substantially eliminated by negatively trimming the fiber optic coil. As a result of the negative trimming, a sufficient amount of the predictable truns of the optical fiber is removed from the fiber optic coil so as to interrupt the predetermined pattern with which the fiber optic coil is wound in order to thereby reduce axial or radial related errors which would have otherwise resulted. Alternatively, the fiber optic coil may be negatively trimmed by terminating winding of the fiber optic coil before the predetermined pattern of the fiber optic coil has been completed. The point at which winding is terminated may be selected so as to reduce axial or radial related errors to a desired level.
Patent CA-2244014-A1 (CA)
Title: Biostable water-borne paints and processes for their preparation
Inventor: SAU ARJUN CHANDRA
IPC: C09D105/00
Filed: 1998-07-27
Abstract: Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of their initial viscosity 24 hours after they are inoculated with polysaccharide hydrolysis enzyme. A process for making the biostable water-borne paints has the steps: a) treating precursor polysaccharide derivative with polysaccharide hydrolysis enzyme in aqueous medium for a time sufficient to obtain reduced molecular weight polysaccharide derivative; and b) mixing the reduced molecular weight polysaccharide derivative with an effective amount of at least one other water-borne paint ingredient to obtain a water-borne paint.
Patent CA-2244663-A1 (CA)
Inventor: MILLER A DUSTY
IPC: C12N15/867
Filed: 1997-02-12
Abstract: Cette invention concerne des cellules d'encapsidation de vecteurs rétroviraux qui produisent des particules de vecteurs rétroviraux, défectueux vis à vis de la réplication, capables de se lier à des récepteurs rétroviraux du type Glvr-1 ou Ram-1 sur des cellules cibles et qui sont utiles en thérapie génique. Ladite cellule d'encapsidation utilise un vecteur codant une protéine enveloppe d'un vecteur rétroviral de classe 10A1 et elle produit un titrage élevé de particules rétrovirales.
Patent CA-2245231-A1 (CA)
Inventor: CAMPBELL NORMAN
IPC: F16N3/12
Filed: 1998-08-18
Abstract: A grease gun includes a tubular casing having a first end, a second end, and an interior cavity defined by interior sidewalls. A pump mechanism is positioned at the first end of the casing. A piston is disposed in the interior cavity in sliding contact with the interior sidewalls. A shaft is provided having a first end secured to the piston and a second end that extends past the second end of the casing. A ratchet mechanism is positioned at the second end of the casing which engages and imparts axial movement to the shaft to move the piston toward the first end of the casing. The ratchet mechanism applies sufficient pressure to force entrapped air from the grease gun.
Patent CA-2248311-A1 (CA)
Title: Apparatus for blocking a d.c. component of a signal
Inventor: COUCH NIGEL
IPC: H01P1/20
Filed: 1997-03-03
Abstract: Apparatus for blocking a d.c. component of a signal comprises an electrically conductive signal path (1, 2) having a gap (3) in it preventing direct current flow across the gap, and an electrically conductive element (4) spaced from the path by a body (5) of dielectric material, the element (4) being located and dimensioned such that in use an a.c. signal is coupled from the signal path (1) into the element (4) at one side of the gap, and from the element (4) into the signal path (2) at the other side of the gap. The apparatus includes a quarter wavelength earthing strap between the signal path and ground potential. The apparatus includes means for providing an a.c. signal feed into a hazardous environment in an intrinsically safe manner.
Patent CA-2250072-A1 (CA)
Title: Polyetherester resins from diol diesters
Inventor: KLANG JEFFREY A
IPC: C07C69/60
Filed: 1997-03-13
Abstract: A process for making polyetherester resins is disclosed. The process comprises reacting a polyether with a diol diester in the presence of a catalyst that promotes random insertion of the diester into carbon-oxygen bonds of the polyether to produce the polyetherester resin. The process of the invention offers many advantages, including higher resin yields, reduced by-product generation, and the ability to make resins with low color and low acid numbers. The resins are useful for making polyetherester thermosets.
Patent CA-2250646-A1 (CA)
Title: Adaptive frequency channel assignment based on battery power level in wireless access protocols
Inventor: AGRAWAL PRATHIMA
IPC: H04L12/28
Filed: 1998-10-14
Abstract: A method and system adapt scheduling priorities in a wireless communications system to conserve battery power in mobile stations operating within the system. A base station, within the system, receives battery power level information and other s etup information from mobile stations operating within the service area of the base s tation during call setup procedures. Based on the battery power level information and o ther setup information, the base station assigns frequency channels to the mobile stations so that those mobile stations having battery power levels below a threshold value are assigned frequency channels that have lower interference levels than frequency channels assigned to other mobile stations. The frequency channel assignments are transmitted to the mobile stations.
Patent CA-2251392-A1 (CA)
Title: Plated meal with individually frozen ingredients
Inventor: ASKMAN LARS
IPC: A23L5/10
Filed: 1998-11-06
Abstract: The invention relates to a plated frozen meal comprising a plate, a group of individually frozen predominantly carbohydrate ingredients and/or a group of individually frozen predominantly vegetable ingredients, and a group of individually frozen predominantly meat based ingredients and frozen sauce. The groups of ingredients are arranged on a plate at a location on which they substantially remain upon thawing and heating, and the sauce is in pellet form and being effective to even the heating of the other ingredients in the meal.
Patent CA-2254025-A1 (CA)
Inventor: GREWE TIMOTHY M
IPC: B60L50/15
Filed: 1998-11-12
Abstract: An electric vehicle is controlled to conform its operation to that of a conventional internal-combustion-engine powered vehicle. In some embodiments, the charging of the batteries by the auxiliary source of electricity and from dynamic braking is ramped in magnitude when the batteries lie in a state of charge between partial charge and full charge, with the magnitude of the charging being related to the relative state of charge of the battery. The deficiency between traction motor demand and the energy available from the auxiliary electrical source is provided from the batteries in an amount which depends upon the state of the batteries, so that the full amount of the deficiency is provided when the batteries are near full charge, and little or no energy is provided by the batteries when they are near a discharged condition. At charge states of the batteries between near-full-charge and near-full-discharge, the batteries supply an amount of energy which depends monotonically upon the charge state. Charging of the batteries from the auxiliary source is reduced during dynamic braking when the batteries are near full charge. Control of the amount of energy returned during dynamic braking may be performed by control of the transducing efficiency of the traction motor operated as a generator.
Patent CA-2255949-A1 (CA)
Title: System and method for implementing multiple home location registers for a single mobile station in a cellular telecommunications network
Inventor: FOTI GEORGE
IPC: H04W8/04
Filed: 1997-05-16
Abstract: In a cellular telecommunication network utilizing home location registers for completion of calls to and from a mobile station (60), a system and method is disclosed for loading and accessing database information relating to the mobile station, and completing calls to the mobile station while roaming in a visited foreign network without incurring long distance charges. The radio telecommunication system includes a mobile station (60) having a mobile subscriber number (MSNB) and a first subscriber number (SNB), a home network (110) having a mobile switching center (MSC) (114) and a first home location register (HLR) (112) which maintains database information relating to the mobile station, and a visited foreign network (120) having a visited mobile switching center (V-MSC) (124) and a second HLR (122). When the mobile station (60) roams into the visited foreign network (120), a second SNB is assigned to the MSNB, and subscriber information is stored in the second HLR (122). When a call is received for the mobile station on the second SNB, the V-MSC (124) accesses the second HLR (122) for subscriber information and completes the call locally to the mobile station.
Patent CA-2256355-A1 (CA)
Title: Error detection method and apparatus for digital communication data packets
Inventor: LANG RALPH UWE
IPC: H04L1/00
Filed: 1997-05-30
Abstract: The present invention discloses an audio channel field for use in transmitting digital audio in a communication system. The audio channel field includes at least two nibbles (130a-d) of the digital audio. The audio channel field further includes a channel check field (130e) calculated from one or more bits from each of the at least two nibbles selected from the most significant bit to least significant bit but in no event more than a portion of each of the nibbles. The present disclosure also includes an error detection apparatus which includes a comparator (302) for comparing the value of the channel check field and the output of a second channel check field calculator and a circuit responding to the output from the comparator indicating non-equality of the channel check field and the second output by muting the audio and/or searching for a new transmission/reception channel for the communication system.
Patent CA-2256778-A1 (CA)
Title: Power semiconductor module
Inventor: GREENSPAN JAY
IPC: H01L25/18
Filed: 1998-12-21
Abstract: An electronic module or package is disclosed for providing high reliability and high performance operation.  The package comprises a hermetically sealed enclosure having a metallic baseplate and a ceramic cover,  and containing one or more circuits  or  devices  therein  which  typically  are  power rectifiers, bridges or power control circuitry.  One or more power terminals are disposed on a terminal block compliantly supported on or above the baseplate, the terminals extending through the cover in hermetically sealed manner.   Signal or control terminals may also be disposed on a terminal block compliantly  supported  on  or  above  the  baseplate,  these terminals also extending through the cover in hermetically sealed manner.  An adapter plate may be mounted on the cover and containing a plurality of terminals connected to the module terminals.  The terminals of the adapter plate can be in any configuration to suit user requirements without requiring a change in the terminal configuration of the module itself.  The adapter plate may also contain active and/or passive circuitry.
Patent CA-2258152-A1 (CA)
Title: Nouveaux derives aromatiques substitues par un ribose, leur procede de preparation et leur application comme medicaments
Inventor: KLICH MICHEL
IPC: C07H17/075
Filed: 1997-06-10
Abstract: L'invention a pour objet les composés de formule (I), où R1 = H, OH, alkyle, alkényle ou alkynyle éventuellement substitué ou alkoxy; R2 = H, Hal; R3 = H, alkyle, Hal; R4 = (a), Rg et Rh: H, alkyle, aryle hétérocycle; R5 = H ou Oalkyle; R6 = alkyle ou CH2-O-alkyle; R7 = H ou alkyle. Les composés de formule (I) présentent des propriétés antibiotiques.
Patent CA-2258292-A1 (CA)
Inventor: CHRISTENSEN TOVE
IPC: A23L29/00
Filed: 1997-06-30
Abstract: The present invention relates to a cloned DNA sequence encoding an enzyme with dextranase activity, a recombinant expression vector comprising said DNA  sequence, a filamentous fungus host cell, a method for producing said recombinant dextranase, and the isolated and purified enzyme. The invention also relates to compositions comprising the recombinant enzyme, oral care compositions and products and the use for removing of dental plaque.
Patent CA-2259101-A1 (CA)
Title: Flexible stent and method of use
Inventor: COX DANIEL L
IPC: A61F2/06
Filed: 1999-01-18
Abstract: The invention is directed to an expandable stent for implantation in a body lumen, such as an artery. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in the longitudinal direction.
Patent CA-2261323-A1 (CA)
Title: Backup procedure for dss2-based signalling links
Inventor: NAIDOO NILANTHREN V
IPC: H04L69/40
Filed: 1999-02-05
Abstract: A method of improving the signalling performance reliability of an interface between a signalling agent and an ATM switch in a DSS2 asynchronous transfer mode network. In the case of a non-redundant signalling agent, a primary link is established between a first Layer 2 port of the signalling agent and a first Layer 2 port of the ATM switch; and, a primary backup link is established between a second Layer 2 port of the signalling agent and a second Layer 2 port of the ATM switch. The Layer 2 ports are coupled to Layer 3 segments of the signalling agent and the ATM switch respectively, in accordance with established ATM protocols. During normal operation of the primary link, the primary link is maintained in an active state in which all signalling messages directed to the interface are transferred between the Layer 3 segments over the primary link. The primary backup link is maintained in a standby state in which the primary backup link is active between the second set of Layer 2 ports, but inactive between the Layer 3 segments. Upon abnormal operation of the primary link, the primary link is switched into an inactive state to prevent further transfer over the primary link of signalling messages directed to the interface; and, the primary backup link is switched into an active state in which all signalling messages directed to the interface are transferred between the Layer 3 segments over the primary backup link.
Patent CA-2266647-A1 (CA)
Title: Method and device for training the tactile perception of a marksman, in particular a sport marksman
Inventor: TRABUT PIERRE
IPC: F41A33/00
Filed: 1997-10-01
Abstract: For training the tactile perception of a marksman, in particular of a sport marksman, during the firing of a shot in which the marksman exercising a pressure on a trigger of a real or simulation firearm which triggers the shot when it crosses a predetermined threshold, a training process comprises (i) measuring the pressure exercised on said trigger by a finger of said marksman, (ii) converting said measured pressure into electric signals representing an instantaneous amplitude of a pressure vector, and (iii) transforming in real time said electric signals into signals perceptible by a sense of the marksman other than the tactile sense, so that the marksman can in real time follow the variation of the pressure exercised on said trigger until the departure of said shot in simultaneity and in synchronism with the tactile perception perceived by said finger. A training device for implementing this process is also provided.
Patent CA-2268149-A1 (CA)
Title: Stabilized adhesive microspheres
Inventor: KESTI MICHAEL R
IPC: C08F220/00
Filed: 1997-02-24
Abstract: Stabilized microsphere adhesive composition comprising: a plurality of polymeric, elastomeric microspheres wherein the microspheres are the reaction product of reactants comprising polymerizable starting materials comprising at least one C4-C14alkyl(meth)acrylate monomer and optionally at least one comonomer, at least one vinyl-unsaturated additive having both an ionic moiety and a hydrophobic moiety and containing at least 5 but not more than 40 carbon atoms in an amount about 0.1 to 3 parts by weight of the microspheres; optionally, a polymeric stabilizer in an amount of between about 0.1 and about 3 parts by weight per 100 parts by weight of the microspheres; a surfactant in an amount of no greater than about 5 parts by weight per 100 parts by weight of the microspheres; optionally a modifier, wherein the modifier is at least one of a chain transfer agent, a tackifier, a solvent or the like in an amount that is sufficient to provide microspheres with a n-heptane soluble portion in the range of 30-98 %; and (f) an initiator in an amount effective to catalyze the polymerization reaction present in amounts ranging from about 0.1 to approximately 2 parts by weight per 100 parts by weight of the polymerizable monomer starting material.
Patent CA-2271907-A1 (CA)
Title: Microwire staple for holding the resistive member of a heating element in place
Inventor: GRIFFITHS SIMON P
IPC: H05B3/68
Filed: 1998-10-13
Abstract: A heating unit (H) for a cook top includes a ribbon-type heating element (E).  The heating element is mounted on the upper surface of a cake (I) of microporous insulation material. The heating element is arranged in a predetermined pattern on the material and a plurality of staples (10) are used to attach and hold the heating element on the material surface. Each staple is a microwire staple and the staples are spaced along the length of the heating element to mount the heating element to the insulation. The microwire staples have a small thermal mass and so do not create heat sinks at their locations of use. Thus, they do not affect the efficiency of heat transfer between the heating element and that which is being heated. The staples are also preferably of the same metal alloy as that from which the heating element is formed so the staples can withstand high temperatures and numerous temperature cycles to provide a long service life.
Patent CA-2271986-A1 (CA)
Title: Composition de teinture d'oxydation des fibres keratiniques
Inventor: MAUBRU MIREILLE
IPC: A61K8/49
Filed: 1998-09-28
Abstract: L'invention a pour objet une composition prête à l'emploi pour la teinture d'oxydation des fibres kératiniques, et en particulier des fibres kératiniques humaines telles que les cheveux comprenant, dans un milieu approprié pour la teinture, au moins une base d'oxydation, au moins un éther en C4-C8 de glycol en C2 et/ou au moins un éther en C1-C8 de glycol en C3-C9, et au moins une enzyme de type oxydo-réductase à 2 électrons en présence d'au moins un donneur pour ladite enzyme, ainsi que le procédé de teinture mettant en oeuvre cette composition.
Patent CA-2273803-A1 (CA)
Title: Ethylene polymers with alpha-olefins
Inventor: FALCHI PAOLO
IPC: C10L1/18
Filed: 1999-06-09
Abstract: Ethylene copolymers with octene and/or ethylene terpolymers with alpha-olefins from 3 to 12 carbon atoms, optionally in the presence of other comonomers containing more than one unsaturation, usable as additives to increase the gas oil properties at low temperatures, obtainable by polymerization of the monomers in the presence of catalysts comprising: a bis-cyclopentadienyl derivative having the general formula:   (Cp1Cp2)-M-(L2L3) containing groups with oxygen bound to the transition metal, wherein M is a metal from the IIIb group to the Vb group or of the lanthanide series of the Element Periodic Table;      Cp1 and Cp2, equal to or different from each other, represent cyclopentadienyls bound to M with delocalized .pi. bonds.
Patent CA-2276732-A1 (CA)
Inventor: UESAKA HISAKAZU
IPC: H04W76/06
Filed: 1998-10-30
Abstract: Cette invention concerne un réseau de communication par paquets que l'on utilise dans le réseau fixe d'un réseau de communication mobile, et qui est géré de la manière suivante. (1) Lorsqu'un certain trafic d'un ou de plusieurs paquets n'a pas été transmis depuis un certain temps vers ou depuis un utilisateur, ce dernier passe en un mode de maintien de communication. Ce mode de maintien de communication consiste en un mode dans lequel une ressource du réseau est temporairement émise, tandis qu'une station passerelle entre la station mobile et un autre réseau va se comporter comme si un état de communication défini se poursuivait du côté de l'utilisateur et du côté de l'autre réseau. (2) Si l'utilisateur se trouvant dans un état de maintien de communication reprend une transmission par paquets, la station mobile va effectuer un nouvel appel sans aide de l'utilisateur, et va redéfinir un état de communication défini en vue de la communication avec la station passerelle. (3) Si la station passerelle reprend la réception du paquet pour l'utilisateur dans un état de maintien de communication, ladite station passerelle va procéder à une nouvelle réception sans aucune commande en ce qui concerne un autre réseau, puis va redéfinir un état de communication défini en vue de la communication avec la station mobile. (4) Afin de procéder à la nouvelle réception (3), la station mobile procède à un enregistrement de position dans le cas où elle se déplace d'une zone d'enregistrement de position vers une autre après le passage à un état de maintien de communication.
Patent CA-2279619-A1 (CA)
Inventor: CLEGG WILLIAM
IPC: H02G3/12
Filed: 1999-08-04
Abstract: A faceplate has self-contained fastening devices for securing it in a wall opening, and also has rearwardly projecting flanges and legs that are received in the wall. The flanges locate the faceplate relative to the opening and the legs serve to cooperate with the swinging fastener mounted arms to limit their rotation as the fastener is rotated to bring the arms into contact with the backside of the sheetrock wall structure.
Patent CA-2282171-A1 (CA)
Title: Biaxially oriented polyester film and production method thereof
Inventor: HIGASHIOJI TAKUJI
IPC: C08L79/08
Filed: 1999-09-10
Abstract: Disclosed is a biaxially oriented film made of (A) a polyester mainly composed of ethylene terephthalate and (B) a polyether imide and having a single glass transition temperature, a refractive index of 1.60 to 1.80 at least in either a machine direction or a transverse direction. The biaxially oriented film is excellent in thermal dimensional stability, clarity and productivity, and is suitable for use in magnetic recording tape, magnetic recording card, printing plate, ribbon, capacitor, heat-sensitive mimeograph stencil or the like.
Patent CA-2282275-A1 (CA)
Inventor: PEYMAN GHOLAM A
IPC: A61K31/407
Filed: 1998-03-24
Abstract: The present invention relates to, among other things, methods of treatment of migraine headache in humans with reduced side effects by the topical administration of a migraine-ameliorating effective amount of an opioid, singly, or in combination with other pharmacological agents, including vasoconstrictors, antiinflammatory agents, antimicrobial agents, decongestants and non-opioid migraine drugs.