baber/WOPTO huggingface dataset:
Patent CA-2122459-C (CA)
Inventor: FRANCIS GAYLORD L
IPC: C03C8/24
Filed: 1994-04-28
Granted: 2007-01-16
Abstract: Lead-free, tin phosphate glasses contain 25-50 mole percent P2O5, 30-70% SnO, 0-15% ZnO, the mole ratio of SnO:ZnO being greater than 5:1, and an effective amount up to 25% total of at least one oxide in the indicated proportion selected from the group consisting of up to 25% R2O, wherein R2O consists of 0-25% Li2O, 0-25% Na2O, and 0-25% K2O, up to 20% B2O3, up to 5% Al2O3, up to 5% SiO2, and up to 5% WO3. The classes are particularly useful as sealing glass frits in sealing material to join component parts in electrical and electronic devices. The sealing glass material may contain mill additions to reduce the effective coefficient of thermal expansion in a seal, as well as a strength reinforcing additive having a coefficient of thermal expansion preferably below 120 × 10-7/°C.
Patent CA-2131052-C (CA)
Inventor: ROSHDY CONSTANCE E
IPC: B65D25/10
Filed: 1994-08-29
Granted: 2006-06-06
Abstract: Packaging for retaining a component together with an instrument package is disclosed. In a preferred embodiment, a foldable package made from a sheet of cut and folded paperboard material is used to retain an endoscope introduces and attach the introduces to an instrument package containing an instrument that is used with the introduces. The disclosed foldable package comprises openings and flaps that retain both the proximal and distal ends of the introduces, and a proximal flap overlies the introduces. the proximal flap is used to release the package and expose the introduces, permitting it to be removed in one smooth motion. Methods of providing prepackaged surgical instruments for a procedure are also disclosed.
Patent CA-2133407-C (CA)
Inventor: DE CASTRO AURORA
IPC: G01N33/49
Filed: 1992-03-30
Granted: 2002-05-21
Abstract: Blood separation filter assemblies (15) and methods are provided to quickly and completely separate plasma or serum from whole blood without the need of centrifugation. The filter assembly (15) has a cylindrical well wall (13) of well structure (12) sandwiched between the retaining cover structure (16) and the well bottom (14). The filter assembly (15) having filter materials comprising at least one layer of glass fibers having an average fiber diameter ranging from 0.2 µm to 7.0 µm is maintained com-pressed at least 25 % in thickness in the well structure (12) to provide the fast separation of serum or plasma from a blood sample introduced through central aperture (17).
Patent CA-2138738-C (CA)
Inventor: OKUIZUMI KIYOSHI
IPC: H04L12/28
Filed: 1994-12-21
Granted: 2000-06-13
Abstract: A television receiver for automatically judging from a command from a remote controller to control the power on/off, the picture brightness, and the picture contrast of a video projector using a video projector controller provided in the television receiver and for controlling the rolling up and down of a screen using a screen controller also provided in the television receiver.
Patent CA-2139931-C (CA)
Title: Purification of factor ix
Inventor: HERRING STEVEN W
IPC: A61P7/02
Filed: 1993-07-13
Granted: 2001-01-30
Abstract: The present invention relates to a process for purifying Factor IX from an impure protein fraction containing Factor IX. The purification process comprises the steps of adding a solvent and a detergent to an impure protein fraction and incubating the solvent/detergent protein solution to inactivate any viral contaminants. Factor IX is purified from the solvent/detergent protein solution by chromatography on a sulfated polysaccharide resin without first removing the solvent and detergent prior to the purificationon the sulfated polysaccharide resin. The Factor IX, purified by the process has a specific activity of at least 85 units/mg.
Patent CA-2142825-C (CA)
Inventor: AMATEAU MAURICE F
IPC: H05B6/14
Filed: 1993-08-19
Granted: 2004-11-30
Abstract: An apparatus and method are provided for the thermomechanical net shape finishing of precision gear tooth surfaces by controlled deformation into the metastable austenitic condition. To this end, an arrangement of a fixed axis through-feed motion of workpiece (42) and moving axes in-feed motion of two opposed rolling dies (44, 46) are utilized. By means of process control methods and architecture for accomplishing precise mechanical motions, thermal and environmental control, and timely and automatic transfer of workpieces, high strength and high accuracy gear tooth surfaces can be produced.
Patent CA-2144309-C (CA)
Title: Ethylenic oxygen scavenging compositions and process for making same by esterification or transesterification in a reactive extruder
Inventor: CHING TA YEN
IPC: C08F8/32
Filed: 1994-07-13
Granted: 2006-10-24
Abstract: Disclosed is a process for transesterifying a polymer having a polyethylenic backbone and pendant ester moieties comprising contacting a melt of the polymer in a reactive extruder with a transesterifying compoun d so that the polymer undergoes transesterification but not alcoholysis. The transesterified polymer also has pendant ester moieties whi ch differ in kind and/or number from the unreacted polymer. In one embodiment, the process also comprises adding an amount of a transiti on metal salt that is effective to promote oxygen scavenging. Also in a further embodiment, the process comprises irradiating the transesterified polymer with actinic radiation to reduce the induction period before oxygen scavenging commences. Also disclosed are compositions comprising a component which comprises an ethylenic backbone and a pendant or terminal moiety comprising a benzyl radical are disclosed. The invention also embodies new polyethylenic oxygen scavenging compositions comprising a transition-metal salt and a component which comprises a polyethylenic backbone and a pendant or terminal moiety comprising a benzyl radical. Methods of making th e compositions, and methods and compositions using the ethylenic compositions, are disclosed.
Patent CA-2152089-C (CA)
Inventor: WU GUANG-ZHONG
IPC: C07D301/19
Filed: 1993-12-15
Granted: 2006-10-24
Abstract: The present invention comprises a process for the asymmetric synthesis of florfenicol, thiamphenicol or chloramphenicol. In an alternative embodiment, the present invention comprises a process for isomerizing of the S,S-isomer of florfenicol to the R,S-isomer (I)] by sequentially treating with: (i) a lower alkylsulfonyl chloride and a tertiary amine base; (ii) sulfuric acid and water, (iii) an alkali metal hydroxide. The present invention further comprises a process for regioselectively opening an epoxide to form a threo-oxazoline.
Patent CA-2155574-C (CA)
Title: Non-acidic palladium-based catalyst system and its use in carbonylation
Inventor: DRENT EIT
IPC: B01J31/28
Filed: 1994-02-07
Granted: 2004-07-27
Abstract: The invention provides a process for the carbonylation of ethylenically unsaturated compounds by reaction with carbon monoxide and a co-reactant in the presence of a substantially non-acidic catalyst system based on a palladium compound and a bidentate ligand of the formula (I): R1R2M1RM2R3R4 wherein M1 and M2 independently represent a phosphorus, arsenic or antimony atom, R represents a bivalent organic bridging group, R1, R2, R3 and R4 independently represent substituted or non-substituted aliphatic groups, with the proviso that R1 together with R2, and/or R3 together with R4 represent a bivalent cyclic group with at least 5 ring atoms whereby the two free valencies are linked to M1 or M2, respectively. In addition, the invention provides catalytic compositions comprising: a) a palladium compound; b) a bidentate ligand of the formula (II): R1R2PRPR3R4 wherein R is a bivalent organic bridging group containing from 1 to 10 atoms in the bridge and R1, R2, R3 and R4 independently represented substituted or non-substituted aliphatic groups, with the proviso that R1 together with R2 and/or R3 together with R4 represent a bivalent cyclic group with at least 6 ring atoms whereby the two free valencies are linked to the phosphorus atoms(s) and c) a basic compound.
Patent CA-2167475-C (CA)
Title: Cryogenic chiller with vortical flow
Inventor: ENGLER SIDNEY V
IPC: F25D3/11
Filed: 1996-01-17
Granted: 2006-03-28
Abstract: A chiller or tunnel freezer for rapid chilling of chicken carcasses and the like wherein a cryogen such as liquid nitrogen or carbon dioxide snow is sprayed directly on the carcasses or other items as they travel through a passage or tunnel, and wherein vortical flow of air and/or vaporized cryogen is effected within the chiller to continuously sweep the bottom surface of the chiller and recirculate cryogen from the bottom surface, thereby avoiding accumulation of liquid nitrogen or CO2 snow on the bottom surface. The vortical flow is preferably provided by one or more fans disposed within the tunnel. A deflector may be provided on the tunnel interior to direct recirculated cryogen onto the items being chilled. A damper may be provided to regulate fan output and thereby enable optimization of operational efficiency.
Patent CA-2173144-C (CA)
Title: Catheter having imperforate protective barrier
Inventor: GANDI ROBERT ANDREW
IPC: A61M25/00
Filed: 1994-09-30
Granted: 2007-08-07
Abstract: This invention has a catheter (10) with a distal end which is to be positioned through potentially contaminated tissue within a patient to a desired site, and a proximal end. The catheter has at least one fluid lumen (18) extending between the distal end and the proximal end. The fluid lumen (18) provides fluid communication between the desired site and the proximal end. A removable protective barrier (22) is positioned within the fluid lumen at its distal end. The protective barrier (22) is made from a bio-compatible material and selectively occludes the distal end of the fluid lumen so that entry of the contaminated tissue, prior to the distal end of the catheter reaching the desired site, is prevented.
Patent CA-2173578-C (CA)
Inventor: HEATH DEREK E
IPC: A61C5/02
Filed: 1994-10-11
Granted: 2004-09-14
Abstract: An endodontic instrument for use in root canal therapy which comprises an inner core of a metal having a specific flexibility, and at least one outer shell of a metal having a different flexibility.  By selecting the ratio of the two metals, the instrument may be designed to have a predetermined desired flexibility which is sufficient to assure proper operation of the instrument, yet not so stiff as to risk damage to the tooth canal.  A kit which is composed of several such instruments of increasing diameter is also disclosed, and with the instruments being designed to be used sequentially in root canal therapy, and wherein all of the instruments possess substantially the same degree of flexibility.  The instruments can thus be used with predictable and consistent results.
Patent CA-2174281-C (CA)
Inventor: GERHARDINGER DIETER
IPC: C04B28/14
Filed: 1996-04-16
Granted: 2001-03-06
Abstract: Water-repellent plaster compositions comprising the constituents (A) 100 parts by weight of gypsum plaster, (B) from 0.05 to 50 parts by weight of oxide or hydroxide of alkali or alkaline earth metals or a mixture thereof, and (C) from 0.05 to 20 parts by weight of an organopolysiloxane which has hydroxyl and/or alkoxy groups bonded to silicon atoms.
Patent CA-2179228-C (CA)
Title: Method and apparatus for reproducing speech signals and method for transmitting same
Inventor: NISHIGUCHI MASAYUKI
IPC: G10L19/087
Filed: 1996-06-17
Granted: 2004-10-12
Abstract: An encoding unit 2 divides speech signals provided to an input terminal 10 into frames and encodes the divided signals on the frame basis to output encoding parameters such as line spectral pair (LSP) parameters, pitch, voiced(V)/ unvoiced (UV) or spectral amplitude A m. The modified encoding parameter calculating unit 3 interpolates the encoding parameters for calculating modified encoding parameters associated with desired time points. A decoding unit 6 synthesizes sine waves and the noise based upon the modified encoding parameters and outputs the synthesized speech signals at an output terminal 37. Speed control can be achieved easily at an arbitrary rate over a wide range with high sound quality with the phoneme and the pitch remaining unchanged.
Patent CA-2179826-C (CA)
Inventor: FRENGEN JOMAR
IPC: G01N15/14
Filed: 1994-12-23
Granted: 2006-08-22
Abstract: A binary assay method capable of providing wide dynamic range, a high degree of precision and rapid processing times in which analyte is reacted successively with two independently determinable forms of solid-supported binding partner and also with a labelled ligand having affinity for the analyte or binding partner, the analyte concentration being determined from signals deriving from the resulting two forms of analyte-binding partner-labelled ligand systems by reference to a double standard calibration curve. A kit for use in the method is also disclosed.
Patent CA-2180518-C (CA)
Title: Loopback mechanism for frame relay oam
Inventor: AHMAD KHALID
IPC: H04L12/56
Filed: 1996-07-04
Granted: 2000-12-05
Abstract: A loopback mechanism uses frame relay OAM loopback frames which eliminate the need for location identifiers and reduces overhead and complexity. The frames replace source and destination loopback location identifiers by a loopback indicator field, a send node count field and a return node count field. The originating node of the loopback procedure sets the number of intermediate frame relay nodes to be traversed. The intermediate frame relay nodes simply increment or decrement the node count, depending on the direction of the loopback frame.
Patent CA-2188336-C (CA)
Inventor: TREMBLAY CLAUDE
IPC: F42D3/04
Filed: 1996-10-21
Granted: 1999-06-15
Abstract: A device for unblocking mine raises which has multiple flexible arms attached to a top hollow tube which carries the explosive material. Flexible extension poles are attached to a top hollow tube section and hollow tube sections. The flexible arms allow for easy, precise and safe positioning of the explosive material.
Patent CA-2189541-C (CA)
Title: Appareil commade par une vanne a boisseau tournant pour la separation de boites d'un verin de formage de corps de boite
Inventor: MAIN RALPH
IPC: B21D45/08
Filed: 1995-03-16
Granted: 2000-11-21
Abstract: Une presse (15) pour le formage du corps cylindrique relativement long (18) d'une boîte à boisson en deux pièces fait appel à un vérin à mouvement alternatif horizontal (25) pour entraîner un godet (16) relativement court à travers un bloc matriciel circulaire (22). De l'air comprimé est appliqué à travers une vanne à boisseau tournant (55) pour séparer le corps du vérin. Cette vanne comporte un rotor (65) rotatif en continu relié mécaniquement à l'entraînement (20) du vérin de sorte que, pour chaque révolution du rotor, le vérin effectue un cycle complet. Le rotor est constitué de deux disques (91, 92) venant en butée, face contre face, et dont chacun est doté d'une ouverture courbée en arc (95, 96). Un arbre d'entraînement (66) de rotor s'étend à travers le centre du rotor, et la position angulaire des disques, l'un par rapport à l'autre, est variable de manière à permettre l'ajustement de la partie de chaque révolution du rotor pendant laquelle l'air comprimé est appliqué pour la séparation par le réglage du niveau de chevauchement des ouvertures.
Patent CA-2199027-C (CA)
Title: Oral compositions
Inventor: VERNON PETER GEORGE
IPC: A61K8/60
Filed: 1995-09-20
Granted: 2001-02-20
Abstract: The invention relates to oral care products such as toothpastes with an improved sensorially-perceivable cleaning benefit. This is achieved by the inclusion in the oral care products of agglomerates, substantially free from organic and/or inorganic binding agents, whereby the agglomerates are made of at least two chemically and/or physically different particulate materials of specified particles sizes. The inclusion of materials having a therapeutic benefit on the teeth or gums in the agglomerates such as zinc citrate provides for a further benefit in that this material is slowly released from the agglomerates, thus providing for a delivery of this material over a longer period. Upon use, the gritty-feeling agglomerates will break-down into smaller particles, thus giving the consumer the feeling of initial cleaning and subsequent polishing.
Patent CA-2204353-C (CA)
Title: Ozone generator
Inventor: CONRAD HELMUT GERHARD
IPC: C01B13/11
Filed: 1995-11-03
Granted: 2002-12-31
Abstract: A generator is taught which uses alternating current or pulsating direct current to produce ozone from oxygen. The generator comprises a high voltage (212) and ground electrode (210) separated to form a gap (18) for accommodating a dielectric member (214) and gas to be reacted. The generator includes many features which may be used alone or in combination to provide an energy efficient and safe apparatus.
Patent CA-2205542-C (CA)
Title: Systeme de detection d'impuretes
Inventor: HOFFMANN JOHN D
IPC: G01N33/34
Filed: 1995-12-06
Granted: 2002-05-28
Abstract: L'invention concerne un procédé et un appareil destinés à l'échantillonnage continu d'une pâte cellulosique aqueuse dans un courant de traitement ou dans un réservoir, et à la détection d'impuretés trop grosses dans le courant échantillonné, dans le but général d'estimer le niveau de contamination dans le réservoir ou le courant de traitement au cours d'une période de production donnée. Le procédé décrit comprend notamment les étapes suivantes: (1) un courant d'échantillonnage continu est extrait du courant de traitement ou principal; (2) ce courant est amené à passer par un dispositif centrifuge qui divise le courant échantillonné en fonction de sa densité; (3) le courant présentant le niveau le plus élevé d'impuretés, en provenance du dispositif centrifuge, est amené à passer à travers un tamis qui isole les impuretés; et (4) les impuretés sont rincées hors du tamis de sorte qu'elles puissent être quantifiées. Ces mesures sont ensuite utilisées pour l'évaluation de la pureté du matériau en cours de production. Une application utile de cette invention est la détermination de la présence de traces d'impuretés plastiques dans la production de pâte cellulosique. Par comparaison aux procédés manuels de vérification de la présence d'impuretés plastiques, cette invention permet d'effectuer des mesures plus précises, plus pratiques et moins subjectives.
Patent CA-2207608-C (CA)
Inventor: LARSEN FRANK
IPC: C12Q1/6806
Filed: 1995-12-12
Granted: 2009-04-07
Abstract: La présente invention se rapporte à un procédé d'isolement de l'acide nucléique d'un échantillon, ce procédé consistant à mettre en contact cet échantillon avec un détergent et un support solide, l'acide nucléique soluble de l'échantillon étant lié au support, et à séparer de l'échantillon ce support et l'acide nucléique lié. Le procédé de l'invention est utilisé pour isoler l'ADN, et il peut être associé de manière appropriée à une autre étape afin d'isoler l'ARN du même échantillon.
Patent CA-2208309-C (CA)
Inventor: BONNET HENRI
IPC: B65G67/08
Filed: 1996-02-12
Granted: 2001-08-14
Abstract: An extendible conveyor (10) for conveying material to be loaded or unloaded from a trailer includes a telescoping boom (12) supporting an endless conveyor belt for rotation about the telescoping boom at any extention length. A belt take-up (16) is provided external to the telescoping boom for releasing or taking-up excess belt corresponding to the movement of the telescoping boom (12). A belt tension control arrangement which includes a control circuit and an extension sensor is provided to coordinate the release or take-up of excess conveyor belt corresponding to the telescoping boom movement while maintaining the conveyor belt at a desired belt tension. The extendible conveyor (10) is pivotally supported for accommodating varying trailer bed heights and material loading conditions.
Patent CA-2217508-C (CA)
Inventor: D JURIC GORAN
IPC: F16L37/098
Filed: 1997-10-06
Granted: 2007-06-12
Abstract: A connector assembly comprising a retainer mounted axially to tubing, conduit, rod, cable or other axially loaded components behind a male insert having an annular ring or bead or an expanded end portion. Upon assembly of the male insert and retainer into a female receptor, the retainer arm's spring extensions compress to permit entry into the female receptor and once past an annular protrusion in the receptor, resume their normal state. This prevents the female receptor and the male insert from disengaging by the interference between the annular ring, the annular protrusion and the retainer arms and also prevents debris from entering into the joint connection, thereby affecting the operation of the retainer and any sealing means.
Patent CA-2222582-C (CA)
Title: Synthetiseur vocal ayant une base de donnees constituee d'elements acoustiques
Inventor: TANENBLATT MICHAEL ABRAHAM
IPC: G10L13/02
Filed: 1996-08-02
Granted: 2001-09-11
Abstract: L'invention concerne un procédé de synthèse vocale utilisant une base de données constituée d'éléments acoustiques et réalisée à partir de séquences phonétiques apparaissant dans l'intervalle d'un signal vocal. Pour réaliser la base de données, on détermine les trajectoires (220) pour chacune des séquences phonétiques contenant un segment phonétique correspondant à un phonème particulier (210). Une région de tolérance est identifiée ensuite sur la base de la concentration des trajectoires correspondant à différentes séquences de phonèmes (230). Les éléments acoustiques pour la base de données (260) sont formés à partir de portions des séquences phonétiques, par identification des points de coupure (250) dans les séquences phonétiques correspondant à des points dans le temps le long de trajectoires respectives près de la région de tolérance (240). De cette manière, il est possible d'enchaîner des éléments acoustiques ayant des phonèmes de jonction communs, ce qui permet de minimiser les discontinuités perceptibles au niveau des phonèmes de jonction. On décrit également des procédés de calcul simples et rapides, pour déterminer la région de tolérance.
Patent CA-2234323-C (CA)
Title: Drip tray
Inventor: HOLTBY QUINN
IPC: F16N31/00
Filed: 1998-04-07
Granted: 2008-11-25
Abstract: A drip tray includes, in combination, a plurality of trays having a bottom and a raised peripheral sidewall extending from the bottom to define a liquid retaining enclosure. The plurality of trays are arranged in edge to edge relation to form a grid-like pattern. The trays are detachably secured together in edge to edge relation to maintain the grid-like pattern.
Patent CA-2237547-C (CA)
Title: Metal corrosion inhibited organic acid compositions
Inventor: BREZINSKI MICHAEL M
IPC: C09K8/54
Filed: 1998-05-13
Granted: 2004-11-30
Abstract: By the present invention, improved metal corrosion inhibited aqueous organic acid compositions and methods are provided. The compositions are basically comprised of water, an organic acid, a corrosion inhibitor comprising at least one rosin amine derivative and a low toxicity corrosion inhibitor intensifier selected from the group consisting of thioglycolic acid and derivatives thereof.