baber/WOPTO huggingface dataset:
Patent CA-2284656-A1 (CA)
Title: Aerosol dispensing device
Inventor: BACON RAYMOND JOHN
IPC: A61M15/00
Filed: 1998-03-16
Abstract: The dispenser (1) is for a medicament in an aerosol container (2), which is mounted in a body (3), within a sleeve (4) in a manner allowing air flow to pass the container, with the aerosol outlet tube (5) received in a socket (6) in a block (7) upstanding from the floor (8) of the body. The container is of the type which dispenses a measured dose on depression of the tube towards the container's body (9). The tube (5) is a gas tight seal in the socket (6). The block has a polyethylene tube (11) adhered into a side opening (12) of the block, in communication with the socket (6).  The tube has a pair (13, 14) of kinks in it. Its end opposite from the block is adhered into a piston (15) at a throughbore (16). The piston is housed in a cylinder (17) formed in the body (3). To the outside of the cylinder is clipped an extension (18) of the body, having a mouthpiece (19) with an inhalation orifice (20). The arrangement provides an enlargement (21) in the bore (22) of the cylinder (17). The enlargement steps down in diameter to that of the (non-circular) mouthpiece, providing an abutment for a spring (23) acting on the piston and urging it in the direction of the block.  Normally the tube is kinked (13, 14) by the action of the spring to such extent that it is obturated and acts as a valve (24). Thus when a dose is released into the socket (6), it is contained by the valve (24). On inhalation through the mounthpiece, the piston is drawn towards the mouthpiece against the action of the spring by the reduced pressure in the mouthpiece.
Patent CA-2284706-A1 (CA)
Inventor: ALLEMANN MARCO
IPC: F24H1/26
Filed: 1998-03-23
Abstract: L'invention concerne une chaudière de chauffage (11) équipée d'un brûleur, destinée à des appareils de chauffage mural ou à des appareils de chauffage encastrés dans une cuisine. Dans cette chaudière, un échangeur de chaleur (15), en forme d'enveloppe, constitué d'éléments tubulaires (43) montés en parallèle ou en série, sépare le foyer en une chambre de combustion (17) et une chambre de gaz brûlés (19). L'échangeur de chaleur (15) présente des ouvertures (41) pour les gaz de combustion chauds, réparties sur l'ensemble de la surface de l'enveloppe. La tête de brûleur montée dans la chambre de combustion est adaptée à la combustion de mazout et présente un tube-foyer (23) comportant une ouverture axiale (37) pour la flamme. A distance de ladite ouverture (37) est placé un déflecteur de flamme (39) conçu de sorte que la flamme soit déviée dans l'espace compris entre le tube-foyer (23) et l'échangeur de chaleur (15). En outre, une enveloppe entourant la zone de la flamme peut être placée entre l'échangeur de chaleur (15) et le tube-foyer (23) pour protéger l'échangeur de chaleur (15) d'un contact direct avec la flamme.
Patent CA-2286773-A1 (CA)
Inventor: HENSLER THOMAS ANTHONY
IPC: D21H27/02
Filed: 1998-04-02
Abstract: A process for high pressure embossing a single ply of paper and the paper produced thereby. The embossing process requires two rolls, a pattern roll (30) and an anvil roll (32). The rolls are loaded together at a pressure of at least 1000 psi at the nip. A single ply of paper is embossed in the nip. The embossments of the paper do not extend outwardly beyond the thickness of the paper to have any out of-plane deformation. The embossments are typically glassined.      The resulting paper has an aesthetically pleasing appearance, without undue loss of tensile strength from the embossing process.
Patent CA-2287645-A1 (CA)
Title: Process for producing nucleic acid derivatives
Inventor: KATAYAMA SATOSHI
IPC: C07H19/04
Filed: 1999-10-26
Abstract: There can be provided an excellent industrial process for producing compounds having sugar-moiety hydroxyl groups or halogen atoms reduced in nucleic acids or in derivatives thereof by allowing O-thiocarbonyl derivatives of sugar-moiety hydroxyl groups or allowing halogenated derivatives in the sugar-moiety, in the nucleic acids or in derivatives thereof to react with any one of hypophosphorous acids (including salts thereof) and phosphites (esters) which are inexpensive, non-toxic and safely usable as radical reducing agents in industrial scale, in the presence of a radical reaction initiator.      The process of the present invention is an industrially useful and highly safe process for reducing sugar-moiety hydroxyl groups and halogen atoms in nucleic acids or derivatives thereof (including nucleic acid-related compounds) at low costs.
Patent CA-2289296-A1 (CA)
Title: Fasteners for electric load center basepan
Inventor: TUMLIN RICKY W
IPC: H02B1/04
Filed: 1999-11-10
Abstract: A first surface of a basepan of molded plastic for an electric load center includes a plurality of integrally formed fasteners for securing electrical components such as bus bars, neutral bars, and neutral tie bars to the basepan. Each fastener is formed in the absence of any core through the basepan from a second surface obverse to the first. Each integrally formed fastener has a support portion which projects away from the basepan first surface and a flexural portion supported by the support portion. The flexural portion has a first outwardly facing surface inclined with respect to the basepan first surface at an angle that facilitates elastic deformation of the flexural portion, but not the support portion upon application of a bar to the basepan. The flexural portion also has a second inwardly facing surface arranged at an angle with respect to the basepan first surface that facilitates fixed retention of the bar despite any reasonable variation in the thickness of the bar.
Patent CA-2289825-A1 (CA)
Title: Self-centering roller hinge unit for a roll-up door
Inventor: MILLER JERRY G
IPC: B60J5/00
Filed: 1999-11-15
Abstract: A hinge and roller assembly for use in a roll-up door including a pair of leaves each forming a portion of a bearing socket, a bushing mounted in the bearing socket, a shaft slidably mounted in the bushing. The shaft mounts a roller on one end and the roller is adapted to roll in a track. A spring is mounted between the shaft and the bushing to bias the shaft axially toward the track. A releasable retainer on the bushing removably retains the bushing in the socket. Preferably, each of the leaves includes a plate through which the hinge is mounted to the door and an integral strap which is bent into a circular shape to define a portion of the socket and is attached at a distal end to the plate.
Patent CA-2290437-A1 (CA)
Title: Video-assisted apparatus for hearing impaired persons
Inventor: LAPALME MARIE
IPC: H04R1/08
Filed: 1998-05-26
Abstract: The apparatus for hearing impaired persons of the present invention comprises a telephone receptionist style headset which is to be worn by a speaker person on her head, in the conventional way. This headset is equipped with a frontwardly extending support arm which carries at its front free end a miniature camera (and also optional microphone) targetting the speaker's mouth. The camera is linked by a wire to a transmitter having intrinsic power means, which transmits the images caught by the camera by means of a wireless signal to receivers located remotely of the transmitter, e.g. on students' desks in a classroom. The receivers decode the signal and retransmits the images to television screens.  Thus, hearing impaired persons can observe the screens for performing lip-reading of the speaker person, so as to understand the conversation, even though the speaker's mouth may not be visible from the distance to these hearing impaired persons at any given time. Alternately, the camera could be shifted back over an ear of the speaker person, and a minor directed toward the camera placed instead ahead of the speaker's mouth, for reduced weight of the headset ahead of the teacher and therefore enhanced comfort by the speaker person.
Patent CA-2290694-A1 (CA)
Title: Heavy aromatics processing
Inventor: KINN TIMOTHY FREDERICK
IPC: C10G11/05
Filed: 1998-06-12
Abstract: A heavy aromatics feed is converted to lighter aromatics products, such as benzene, by contacting a C9+ aromatics fraction and toluene over a first catalyst comprising a zeolite having a constraint index ranging from 0.5 to 3 and a hydrogenation component, and a second catalyst composition comprising an intermediate pore size zeolite having a constraint index ranging from 3 to 12 and a silica to alumina ratio of at least 5, whereby the amount of coboilers is reduced or eliminated.
Patent CA-2290961-A1 (CA)
Title: Coating composition and printing medium
Inventor: WANG ALAN E
IPC: B41M5/50
Filed: 1998-05-15
Abstract: A printing medium comprising a substrate having at least one surface and a coating on the surface wherein the coating comprises: (a) binder comprising:  (1) organic polymer which is substantially free of ammonium groups, (2) first cationic addition polymer consisting essentially of quaternary ammonium-containing mer units derived from addition monomer and ammonium-free mer units derived from addition monomer, and (3) second cationic addition polymer consisting essentially of secondary, tertiary, or both secondary and tertiary ammonium-containing mer units derived from addition monomer and ammonium-free mer units derived from addition monomer, wherein the binder constitutes from 20 to 90 percent by weight of the coating; and (b) finely divided substantially water-insoluble filler particles which have a maximum dimension of less than 500 nanometers, are distributed throughout the binder, and constitute from 10 to 80 percent by weight of coating. An aqueous coating composition comprising the above binder and filler is also described.
Patent CA-2293195-A1 (CA)
Title: .alpha.-amylase maltogenique immobilisee et son utilisation dans la fabrication d'un sirop riche en maltose
Inventor: FOUACHE CATHERINE
IPC: C12N11/08
Filed: 1999-12-22
Abstract: L'invention concerne une .alpha.-amylase maltogénique immobilisée, caractérisée par le fait qu'elle est adsorbée sur des particules d'au moins un support choisi dans le groupe constitué par les résines phénoliques, les résines acryliques et les résines polystyréniques. Elle concerne également l'utilisation d'une telle .alpha.-amylase pour la fabrication d'un sirop riche en maltose.
Patent CA-2294473-A1 (CA)
Inventor: BUCK LINDA
IPC: C12Q1/68
Filed: 1998-06-30
Abstract: The invention describes a multigene family encoding a collection of novel mammalian pheromone receptors. Nucleic acids encoding the pheromone receptor polypeptides, including fragments and biologically functional variants thereof are provided. Also included are polypeptides and fragments thereof encoded by such nucleic acids, and antibodies relating thereto. Methods and products for using such nucleic acids and polypeptides also are provided.
Patent CA-2296290-A1 (CA)
Title: Medical infusion wire
Inventor: WALKER BLAIR D
IPC: A61M25/00
Filed: 1998-07-14
Abstract: An infusion wire that can be used either as a guidewire or an infusion catheter having a tapered core wire within an infusion lumen formed of the aligned lumens of the conduit of a proximal connector housing, an inner sheath in a proximal infusion wire portion and a distal coil wire in a distal infusion wire portion. The inner sheath is formed either of a polyimide tube or a wire reinforced polyimide tube, at least in a proximal section thereof.  In a fixed core wire embodiment, the core wire proximal end is attached to the connector housing, and the core wire distal end is connected to the distal end of the distal wire coil. An outer sheath is attached to the connector housing and formed over the inner sheath and the distal wire coil. A plurality of infusion side holes are formed in a distal infusion segment of the outer sheath in fluid communication with the infusion lumen. At the junction of the inner sheath and the distal wire coil, a radiopaque wire coil of a material having a higher radiopacity than the distal wire coil is formed into a plurality of radiopaque wire coil turns of substantially the same pitch, inner lumen diameter and outer diameter as the distal wire coil. The distal wire coil is space wound with distally increasing coil spacings. The distal core wire portion extending through the distal wire oil is tapered distally either continuously or in a stepped manner.
Patent CA-2296691-A1 (CA)
Inventor: SCHULZ GRACE Y
IPC: A61B18/12
Filed: 1998-07-17
Abstract: La présente invention concerne un cathéter muni d'électrodes extensibles permettant d'appliquer de l'énergie sur une structure anatomique creuse telle qu'une veine. Utilisé sur une veine, le cathéter permet de traiter de façon peu invasive une insuffisance veineuse. Le cathéter comprend des bagues terminales conductrices auxquelles les électrodes sont attachées, qui permettent d'interconnecter mécaniquement et électriquement les électrodes afin d'obtenir des points de connexion électrique à fil unique, et de pouvoir transmettre l'énergie en espaçant les électrodes de façon plus uniforme. Des bras extensibles formés dans un matériau électroconducteur sont isolés sur leur longueur, sauf sur une partie intermédiaire qui fonctionne comme électrode. Les bras vont en s'effilant afin de laisser plus d'espace aux fils et de réduire la possibilité de courts-circuits entre les extrémités des bras. Le cathéter comprend en outre, dans les électrodes, des thermocouples qui permettent de mesurer la température à la surface extérieure de l'électrode. Dans les bras sont formées des fentes qui permettent de monter les thermocouples. On mesure la température de la structure anatomique creuse et si l'on observe une diminution de la température importante et rapide et de courte durée indiquant qu'un jet de fluide est détecté, l'énergie est maintenue à un niveau constant.
Patent CA-2296852-A1 (CA)
Title: Dual-laminate honeycomb material
Inventor: SWISZCZ PAUL G
IPC: B31D3/02
Filed: 2000-01-21
Abstract: A dual-laminate honeycomb panel permits the use of two or more different materials to form a single panel. In this manner, a retractable covering for an architectural opening may be formed that has a different appearance depending upon which side of the panel is being viewed. The resultant panel is formed by attaching a plurality of elongated precursor tubular cells, wherein each precursor tubular cell itself comprises two strips of material attached to one another.
Patent CA-2298636-A1 (CA)
Title: Diamond-coated button insert for drilling and percussive rock drill
Inventor: INGMARSSON KARL
IPC: E21B10/573
Filed: 1998-08-14
Abstract: A button insert for a percussive drill bit comprises a carbide base and a diamond layer bonded thereto. The diamond layer forms a dome-shaped cutting surface which is of symmetrical configuration about a center axis of the insert. A crest portion of the cutting surface has a larger radius of curvature than a peripheral portion thereof. The cutting surface can be formed by numerous radii, or can be of constantly varying radius (i.e., elliptical).
Patent CA-2300025-A1 (CA)
Title: Air-borne particle reduction system
Inventor: DOUGLAS R WAYNE
IPC: B01D51/00
Filed: 2000-03-06
Abstract: An air flow system for handling particulate contaminated air has a fan which draws air through the system, the fan being located at a point upstream of a particle separator, so that particles agglomerating on the surfaces of the fan, when released back into the airstream leaving the fan, are primarily entrained in the particle separator. The function of particle agglomeration can be enhanced by use of a liquid spray at the fan inlet, serving to wet the fan active surfaces. For this purpose a recirculating emulsion paint solvent or dispersant is beneficial as the fan inlet spray to capture fine paint particles, while preventing build-up on the fan active surfaces.
Patent CA-2301985-A1 (CA)
Title: Procede de conversion de fractions lourdes petrolieres comprenant une etape d'hydroconversion en lits bouillonnants et une etape d'hydrotraitement
Inventor: KRESSMANN STEPHANE
IPC: C10G65/04
Filed: 2000-03-22
Abstract: L'invention concerne un procédé de conversion d'une fraction d'hydrocarbures ayant une teneur en soufre d'au moins 0,1 % pds, une température initiale d'ébullition d'au moins 340.degree.C et une température finale d'ébullition d'au moins 440.degree.C caractérisé en ce qu'il comprend les étapes suivantes: a) on traite la charge hydrocarbonée dans une section de traitement en présence d'hydrogène ladite section comprenant au moins un réacteur triphasique, contenant au moins un catalyseur d'hydroconversion en lit bouillonnant, fonctionnant à courant ascendant de liquide et de gaz, b) on envoie au moins une partie de l'effluent issu de l'étape a) dans une section d'élimination des particules de catalyseur contenues dans ledit effluent, c) on envoie au moins une partie de l'effluent issu de l'étape b) dans une section de traitement en présence d'hydrogène et éventuellement d'une fraction d'hydrocarbure d'hydrotraitement en lit fixe.
Patent CA-2303378-A1 (CA)
Title: Automated language filter
Inventor: BRAY JAMES R
IPC: H04N21/488
Filed: 1998-10-02
Abstract: A method and apparatus for analyzing the closed captioned aspect of a video signal for specific undesirable words or phrases and then muting the audio portion of those words or phrases while not affecting the video portion therein while simultaneously modifying the closed captioned signal in order to display an acceptable word or phrase.
Patent CA-2307485-A1 (CA)
Inventor: KNISELY DOUGLAS N
IPC: H04L1/16
Filed: 2000-05-04
Abstract: A variable length sequence number is used to identify data units in a communication channel. The sequence number associated with the most recent data that has been received successfully and the sequence number expected with the next new data message to be received are examined to determine the minimum size sequence number necessary to unambiguously identify to the transmitter incorrectly received data that must be retransmitted in a later message. The receiver provides the transmitter with the sequence number associated with the last successfully received byte of data and the sequence number associated with the next expected byte of data. The receiver communicates this information to the transmitter using a NAK control message.  The transmitter then uses the sequence number of the next byte of data to be transmitted and the information received in the control message from the receiver to determine the smallest number of bits necessary to represent the sequence numbers for both data transmissions and the retransmission of data that was not received properly by the receiver.
Patent CA-2308401-A1 (CA)
Inventor: BARTLETT JEFFREY L
IPC: G01R31/28
Filed: 1998-10-22
Abstract: A test equipment interface circuit (108) capable of acting as an interface between a wireless transceiver and a piece of test equipment for both high frequency band signals and low frequency band signals without the use of active or mechanical switches.
Patent CA-2308876-A1 (CA)
Title: Improved rubber composition
Inventor: VON HELLENS CARL WALTER
IPC: C08L15/00
Filed: 2000-05-12
Abstract: The invention relates to novel crosslinkable carboxylated nitrile rubber compositions that also comprise a multivalent salt of an organic acid and a peroxide crosslinking agent. The compositions may also contain nitrile rubber in admixture with the carboxylated nitrile rubber. The rubber may be hydrogenated. Cured compositions made from the crosslinkable compositions display improved properties, particularly an unexpectedly high modulus.
Patent CA-2309655-A1 (CA)
Inventor: LING HUNG CHI
IPC: C09J7/38
Filed: 1998-11-20
Abstract: A flexible energy-carrying circuit device has reduced flame retardancy while maintaining desired levels of adhesion between the energy-carrying filaments and the substrate with use of a flame-retardant pressure-sensitive adhesive comprised of a polymer of one or more acrylic esters with bromine and phosphorous compounded into the backbone of the polymer to provide an adhesive having inherent flame retardancy. Small quantities of antimony trioxide may be dispersed in the adhesive to enhance flame retardancy.
Patent CA-2312931-A1 (CA)
Title: Test automatise de la fonction visuelle via la telemedecine
Inventor: WROBLEWSKI DARIUSZ
IPC: A61B3/024
Filed: 1998-11-30
Abstract: L'invention concerne un procédé et un appareil permettant d'utiliser un réseau neural central et une banque de données centrale (18), de façon à exécuter une interprétation automatique de paramètres de test de la fonction visuelle obtenus dans une pluralité de systèmes de test de champ visuel (5), pour une pluralité de patients, les signaux de commande et de réponse étant transmis par Internet. Les données produites par les systèmes de test sont analysées automatiquement et comparées avec des modèles sur lesquels le réseau neural a été préalablement entraîné. Des diagnostics cliniques pour des états pathologiques sont ainsi suggérés au clinicien pour chaque patient.
Patent CA-2313298-A1 (CA)
Title: Method and system for selectively receiving content over a communications network based on network communication speed
Inventor: VU CUONG
IPC: G06F17/30
Filed: 2000-06-07
Abstract: The invention provides a method and system for selectively providing content to a user over a communications network based upon the detected bandwidth throughput or speed the user is experiencing while communicating over the network. The determination of the bandwidth throughput or speed is not based upon the access mechanism of the users (e.g. dial-up, DSL, cable modem), but is based upon the effective bandwidth throughput the user is experiencing.   Briefly, according to the method, the speed is determined automatically; the content is selected based on the determined speed and communicated to the user. Speed may be determined automatically by measuring throughput at the user system or the server side. Preferably the speed is determined non-intrusively. Further preferably, the speed between the user and a particular server is determined for example by measuring the speed of the transfer of a plurality of data content items which measures may be averaged.
Patent CA-2314323-A1 (CA)
Inventor: GUNJA VIJAY GOMATAM
IPC: H02M7/5387
Filed: 2000-07-21
Abstract: An apparatus for preventing power backfeed into an inverter circuit having a switching stage for supplying AC power to an output path of the inverter circuit is disclosed. The apparatus comprises a current sensor which senses a current condition in the output path and a switching stage current limiter operable to limit current in the switching stage when said current condition meets a criterion. The current sensor device senses current in the output path and compares it with a reference value to determine whether or not it is within a range. If it is not within this range, a signal is communicated to a gate drive controller which prevents gate drive signals produced by the inverter, from reaching the switching devices of the switching stage. This prevention of gate drive signals from reaching the switching devices occurs very quickly, before the damaging AC backfeed power can reach a level sufficiently high to damage the switching devices because the rate of flow of AC backfeed power is limited to permit disclosed AC backfeed power protection circuitry to operate quickly to prevent AC backfeed power from reaching damaging levels.