baber/WOPTO huggingface dataset:
Patent CA-2256616-A1 (CA)
Inventor: SHITAMORI EIICHI
IPC: H05B3/24
Filed: 1997-01-13
Abstract: L'invention concerne un élément chauffant planar dans lequel une pluralité d'éléments de recouvrement d'électrode (4) recouvrant respectivement des électrodes (3) sont fixés, à intervalles définis, à une feuille (2) formant une résistance chauffante planar. Dans chaque élément de recouvrement d'électrode (4), au moins la région voisine de l'électrode (3) est constituée d'une couche CTP présentant une caractéristique de coefficient de température positif telle que la valeur de la résistance électrique de la couche CTP augmente à mesure que la température s'élève. La feuille (2) ne présente pas une caractéristique de coefficient de température positif ou bien présente une caractéristique de coefficient de température positif telle que l'amplification de la montée en température de la feuille (2) est inférieure à celle de la couche CTP ou bien que la montée en température de la feuille (2) est supérieure à celle de la couche CTP à des températures inférieures à la température à laquelle la couche CTP présente l'amplification de montée en température maximale.
Patent CA-2257287-A1 (CA)
Inventor: TAYLOR D LANSING
IPC: G01N21/64
Filed: 1997-05-29
Abstract: The present invention discloses devices and methods of performing highthroughput screening of the physiological response of cells to biologically active compounds and methods of combining high-throughput with high-content spatial information at the cellular and subcellular level as well as temporal information about changes in physiological, biochemical and molecular activities. The present invention allows multiple types of cell interactions to be studied simultaneously by combining multicolor luminescence reading, microfluidic delivery, and environmental control of living cells in nonuniform micro-patterned arrays.
Patent CA-2262418-A1 (CA)
Inventor: ARNAU JOSE
IPC: C12N9/04
Filed: 1997-08-20
Abstract: L'invention concerne les séquences d'ADN complètes des gènes adhE et pfl de Lactococcus lactis, des réplicons recombinants contenant un de ces gènes ou les deux, ou leurs mutants ou variants, notamment des mutants dans lesquels les gènes sont inactivés, ainsi que des bactéries lactiques recombinantes contenant un réplicon de ce type. Les séquences géniques et/ou les séquences régulant l'expression des gènes peuvent être modifiées de façon à donner des bactéries lactiques à métabolisme modifié, qui produisent de manière augmentée ou diminuée un ou plusieurs métabolites résultant de la fermentation du citrate et/ou du sucre. Les cellules ainsi modifiées sont utiles comme cultures starters pour la fabrication de produits alimentaires et d'aliments pour animaux ayant un goût amélioré et/ou une durée de conservation accrue, notamment les produits laitiers, ou peuvent être utilisées directement pour la fabrication d'un métabolite des bactéries lactiques.
Patent CA-2264085-A1 (CA)
Title: Hyaluronic acid esters, threads and biomaterials containing them, and their use in surgery
Inventor: CALLEGARO LANFRANCO
IPC: A61L17/10
Filed: 1997-08-28
Abstract: The application discloses esters of hyaluronic acid, wherein a first part of the carboxy functions is esterified with an araliphatic alcohol and a second part is esterified with long-chain, straight aliphatic alcohols with between 10 and 22 carbons atoms. The possible remaining non-esterified carboxy functions, if present, are salified. The application further discloses biodegradable threads constituted by the aforesaid esters, and their use in the fields of medicine and surgery.
Patent CA-2265031-A1 (CA)
Inventor: HAUTALA RICHARD ROY
IPC: B44F9/04
Filed: 1999-03-08
Abstract: Disclosed is a method for producing sheets of polymeric surfacing, the sheets produced thereby, and the apparatus used to produce the sheets. The method includes providing a solid polymeric slab, and slicing the slab into sheets of surfacing. The sheets may include polymeric particles contained in a polymeric matrix. The particles may have a maximum linear dimension that is greater than the final thickness of the sheets, thereby resulting in an aesthetically pleasing "chunky" appearance. The apparatus used to slice the sheets produces a relatively smooth, uniform surface, and is capable of dramatically limiting the amount of variation in thickness within a finished sheet.
Patent CA-2265389-A1 (CA)
Title: System and method for efficient basis conversion
Inventor: LAMBERT ROBERT J
IPC: H04L9/00
Filed: 1999-03-12
Abstract: This invention describes a method for evaluating a polynomial in an extension field F q M, wherein the method comprises the steps of partitioning the polynomial into a plurality of parts, each part is comprised of smaller polynomials using a q -th power operation in a field of characteristic q; and computing for each part components of q -th powers from components of smaller powers. A further embodiment of the invention provides for a method of converting a field element represented in terms of a first basis to its representation in a second basis, comprising the steps of partitioning a polynomial, being a polynomial in the second basis, into a plurality of parts, wherein each part is comprised of smaller polynomials using a q- th power operation in a field of characteristic q; evaluating the polynomial at a root thereof by computing for each part components of q -th powers from components of smaller powers; and evaluating the field element at the root of the polynomial.
Patent CA-2266860-A1 (CA)
Inventor: HEINZEN RICHARD J
IPC: C12M1/36
Filed: 1997-09-25
Abstract: A gas-driven particle delivery instrument is provided. The device includes various elements which enhance the utility and efficacy of the device, including a rotational flow element, a turbulent flow element, a flow constriction element, and combinations thereof.
Patent CA-2268456-A1 (CA)
Inventor: MILEY GEORGE H
IPC: H05H1/24
Filed: 1997-10-31
Abstract: An electrostatic ion jet source design, based on inertial electrostatic confinement (IEC) technology. According to the invention, the inertial electrostatic confinement jet source employs a configuration that is compatible with the generation and acceleration of ions within a vacuum chamber (11). The device uses a unique spherical configuration, enlarged hole grid (113), channel guide grid and electron production/confinement method. The prior art designs have to produce a small diameter jet. Virtual cathode formation in a high-density region, combined with a locally distorted cathode grid potential field, extracts accelerated ions in an intense quasi-neutral ion jet (117). The device ejects matter with a jet form for use as an industrial plasma spray, industrial material processing, waste treatment, welding or cutting materials, or for plasma vapor deposition. The invention also concerns a device that can provide a propulsive thrust force for spacecraft propulsion, particularly an ion jet thruster, which uses an inertial electrostatic confinement design having a discharge plasma for generating ions that provide thrust when accelerated and expelled from the device in the plasma jet.
Patent CA-2270881-A1 (CA)
Title: Air to air heat and moisture recovery ventilator
Inventor: CRUM JOSEPH ARDEN
IPC: F24F3/14
Filed: 1997-11-04
Abstract: A ventilator (10) includes a ventilator housing (12) defining an exhaust air flow section (14) and a fresh air flow section (16), a rotary wheel (34), a heat and moisture exchange media (48) supported by the rotary wheel (34) and intersecting the exhaust air flow section (14) and the fresh air flow section (16), a rotary wheel mounting assembly (50) including a first set of guide rollers in contact with a first rim edge portion of the rotary wheel (34) and a second set of guide rollers in contact with a second rim edge portion of the rotary wheel (34), and a drive roller in contact with one of the rim edge portions. A hub and bearing assembly (39) is provided such that the rotary wheel (34) may tilt with respect to the mounting assembly (50). A rotary wheel access plate (72) defines an exhaust air outlet (20) and a fresh air inlet (22) and is equipped with an access plate opening assembly. A moisture transfer wick (69) extends across a partition assembly between the exhaust air flow section (14) and the fresh air flow section (16). A rotary wheel seal (47) positioned between the circumferential rim of the rotary wheel (34) and the ventilator housing (12) includes first and second sealing members pivotally mounted on one end thereof and spring mounted on another end thereof. The rotary wheel (34), which is designed to enable maintenance of wheel circularity, is mounted so as to be readily removable from the ventilator housing (12). Similarly, in one embodiment of the present invention, the exchange media (48) is arranged so as to be readily removable from the rotary wheel (34).
Patent CA-2272142-A1 (CA)
Inventor: GALLUP JAMES MICHAEL
IPC: E21B29/00
Filed: 1999-05-18
Abstract: A downhole milling tool including a cylindrical body and a milling head detachably secured to an end of the cylindrical body in a manner that precludes separation while in use downhole. A number of detachable milling heads with differing characteristics can be provided for use with the cylindrical body of the downhole milling tool.
Patent CA-2272441-A1 (CA)
Title: C-fold return postcard mailer
Inventor: PETERSON WAYNE C
IPC: B42D5/02
Filed: 1999-05-19
Abstract: A mailer type business form intermediate, and business form produced from the intermediate, have an included postcard which is used as a reply piece. The mailer may be a C-fold mailer, with a window (e.g. die cut-out) formed in one of the panels which overlies the outgoing address indicia formed on a face at the postcard. Check-off indicia is preferably provided on the postcard to optimize response, and tear-off strips along the side edges of the mailer are preferably held together with pressure sensitive cohesive. Tacking pressure sensitive adhesive may also be provided along edges of the die cut-out panel and the postcard-securing panel, exterior of the postcard.
Patent CA-2274834-A1 (CA)
Inventor: SANGER ALISON JANE
IPC: A61K8/41
Filed: 1997-12-09
Abstract: La présente invention concerne une composition pour colorants capillaires comprenant un oxydant à base de peroxyacide préformé (a) et un colorant capillaire oxydatif (b). En l'occurrence, le pH de l'oxydant à base de peroxyacide préformé (a) mais aussi du colorant capillaire oxydatif (b) se situe entre environ 1 et au maximum environ 7, le pH de la composition se situant entre environ 1 et au maximum environ 7. Ces produits, qui assurent une excellente coloration des cheveux, allient à l'efficacité d'utilisation des qualités telles qu'une excellente couleur initiale, une bonne tenue au shampooing, et une moindre agressivité à faible pH pour les cheveux.
Patent CA-2276072-A1 (CA)
Inventor: BATTISTONI DANIEL C
IPC: F16J15/12
Filed: 1999-06-23
Abstract: A composite gasket includes a central core located between non-metallic outer facing layers. Each non-metallic outer facing layer has an outer core adjacent the central core. The outer cores can be either perforated or non-perforated. A bead is provided on the central core to produce a resilient biasing force that urges the outer facing layers into contact with respective mating surfaces to improve gasket sealing. The central core optionally has an elastomeric coating to improve sealing between the central core and the outer cores to prevent leakage between gasket layers.
Patent CA-2276253-A1 (CA)
Inventor: MAO TOM
IPC: H04W16/12
Filed: 1997-12-23
Abstract: A cell cluster for use with a frequency re-use pattern is disclosed. The cell cluster comprises eight antenna sites arranged in first and second adjacent columns having four sites associated with the first column and four sites associated with the second column. Frequency groups are assigned to each of the antenna sites such that no adjacent channel interference exist between the antenna sites or between any similarly configured cell clusters associated with the cell cluster.
Patent CA-2277572-A1 (CA)
Inventor: SONG JIELIN
IPC: C25B1/00
Filed: 1999-07-13
Abstract: L'invention a trait à des méthodes et à des dispositifs permettant la génération électrochimique d'azote à partir de composés organiques de l'azote comme les hydrazides (RCONHNH2), les hydrazinocarboxylates organiques correspondants (RCO2NHNH2) et les sels d'aminoguanidine (p. ex., bicarbonate d'aminoguanide H2NNHC(NH)NH2.H2CO3). Divers hydrazides et hydrazinocarboxylates organiques peuvent être utilisés, et soumis à des essais de rendement empiriques. Par exemple, dans les hydrazides et les hydrazinocarboxylates, le « R » peut être un groupement alkyle, alcényle, alcynyle ou aryle et, selon certains modes de réalisation, du méthyle, de l'éthyle ou du benzyle. Les groupements alkyle, alcényle et alcynyle peuvent être ramifiés ou non, et substitués ou non. L'utilité de ces composés peut être éprouvée à l'aide de méthodes courantes, selon les indications données ici, y compris conformément aux exemples donnés ici, dans lesquels les composés azotés proposés peuvent être remplacés par d'autres dans le cadre d'essais systématiques.
Patent CA-2278250-A1 (CA)
Title: High efficiency power converter
Inventor: SCHLECHT MARTIN F
IPC: H02M3/335
Filed: 1998-01-23
Abstract: A power converter nearly losslessly delivers energy and recovers energy from capacitors (C3, C4) associated with controlled rectifiers (Q3, Q4) in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches (Q1, Q2) in series with first and second primary windings, respectively, are turned on for a fixed duty cycle, each for approximately one half of the switching cycle. Switched transition times are short relative to the on-state and off-state times of the controlled rectifiers. The control inputs to the controlled rectifiers (Q3, Q4) are cross-coupled from opposite secondary transformer windings.
Patent CA-2278749-A1 (CA)
Title: Single dose inhaler i
Inventor: JAHNSSON MAGNUS
IPC: A61M15/00
Filed: 1998-01-29
Abstract: A disposable inhaler including a deagglomeration section having a section inlet, a section outlet and a divider for splitting the stream of air into two flow parts either side of the divider, the divider having a surface facing the section inlet and orientated at an angle substantially perpendicular to the stream of air passing through the section inlet and the walls of the inhalation channel through the inhaler being shaped so as to cause substantially no resistance to or turbulence in the air flow through the inhaler.
Patent CA-2279622-A1 (CA)
Inventor: BACHAND JEFFREY P
IPC: D21F1/48
Filed: 1998-04-08
Abstract: A papermaking apparatus such as a Fourdrinier table which includes a long blade (10) and a trail blade (14). In the first aspect of the invention, the long blade includes an upper undulated surface (12) with vents (18) passing from the upper undulated surface (12) to the lower surface of the long blade (10) which is at substantially atmospheric pressure. In the second aspect of the invention, the trail blade (14) includes an elevator-type device (22) for adjusting the vertical position of the trail blade (14). The first and second aspects may be used independently or simultaneously.
Patent CA-2281776-A1 (CA)
Title: Stabilized dfb laser
Inventor: PALMER JAMES R
IPC: H01S5/12
Filed: 1998-02-24
Abstract: A method and apparatus are provided for stabilizing a distributed feedback semiconductor laser (12). The method includes the steps of comparing an optical output of a first oscillating mode of the semiconductor laser (12) at a first polarization angle with an optical output of a second oscillating mode of the semiconductor laser at a second polarization angle orthogonal to the first polarization angle. A first feedback signal is provided to a cavity temperature controller of the semiconductor laser in response to detected differences of the compared first and second oscillating modes. The method further includes the step of comparing an output of the reference laser (40) with an output of the semiconductor laser (12) and providing a difference signal as a second feedback signal to the temperature controller of the semiconductor laser in response to detected differences between the reference laser (40) and semiconductor laser (12).
Patent CA-2282358-A1 (CA)
Inventor: QUIGLEY PETER A
IPC: F16L11/08
Filed: 1998-02-23
Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube (10) can include an inner liner (12), an interface layer (14), fiber composite layers, a pressure barrier layer and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.
Patent CA-2284376-A1 (CA)
Title: Method and apparatus for managing clustered computer systems
Inventor: CHAO CHING-YUN
IPC: G06F11/00
Filed: 1999-10-01
Abstract: A cluster computer system provides both speed and reliability advantages. However, when communications between the clustered computers is compromised those same computers can become confused and corrupt database files. The present method and apparatus are used to improve the management of clustered computer systems.      Specifically, the system expands the number of nodes available for failover conditions.
Patent CA-2286258-A1 (CA)
Title: Projectile for ammunition cartridge
Inventor: BEAL HAROLD F
IPC: F42B12/74
Filed: 1998-08-28
Abstract: A composite projectile for an ammunition cartridge comprising a core (49) formed for compacted power particulates and having opposite ends. The core is encapsulated within a jacket (47) having an open end (62). A cap is contained with the jacket (47) adjacent the open end (62) thereof and is physically captured within the jacket. The contiguous relationship to that end of the core nearest the open end of the jacket. The cap (51) defines a fixed partition extending across the transverse cross section of the jacket that enhances the concentric positioning about the longitudinal centerline of the jacket of any powder particulates dislodged from that end of the core contiguous to the cap (51) and functions as a penetrator when the projectile strikes a target. The core (49) preferably is formed from a cold-compacted mixture of tungsten and lead powders.
Patent CA-2286858-A1 (CA)
Title: Dna sequence coding for a mammalian glucuronyl c5-epimerase and a process for its production
Inventor: LI JIN-PING
IPC: C12N9/90
Filed: 1998-04-17
Abstract: An isolated or recombinant DNA sequence coding for a mammalian, including human, glucuronyl C5-epimerase or a functional derivative thereof capable of converting D-glucuronic acid (GlcA) to L-iduronic acid (IdoA); a recombinant expression vector comprising such DNA sequence; a host cell transformed with such recombinant expression vector; a process for the manufacture of a glucuronyl C5-epimerase or functional derivative thereof capable of converting GlcA to IdoA, comprising cultivation of a cell-line transformed with such recombinant expression vector; and a glucuronyl C5-epimerase or functional derivative thereof prepared by such process.
Patent CA-2287780-A1 (CA)
Title: Use of nerve growth factor for the storage, culture or treatment of cornea
Inventor: LAMBIASE ALESSANDRO
IPC: C12N5/02
Filed: 1997-11-21
Abstract: The nerve growth factor (NGF) is used for the storage of corneas in culture, for the production and the storage in vitro of single cell populations of the corneal morphological and functional unit (i.e., epithelium, stroma/keratocytes and endothelium) and of the conjunctival epithelium, and for the production and the storage of corneal and conjunctival tissues, in particular for transplantation purposes. The NGF is also proposed for use in the therapy and/or the prophylaxis of diseases of the corneal surface, wherein a lack of integrity of the corneal and conjunctival morphological and functional unit occurs, in particular for pathologies having a dystrophic or neurodystrophic basis, both congenital and acquired.
Patent CA-2289436-A1 (CA)
Inventor: HANSEN TOMMY
IPC: B23K20/00
Filed: 1999-11-12
Abstract: Method of manufacturing catalysed hardware with a porous structure adhered to a metallic surface comprising steps of adhering the porous structure on the metallic surface; applying to and/or within the porous structure a ceramic carrier material; and applying catalytic active material to the ceramic carrier material.
Patent CA-2290317-A1 (CA)
Inventor: JACKSON PETER
IPC: H01B3/44
Filed: 1999-11-24
Abstract: A tracking resistant electrical insulating material or article suitable for high voltage applications comprising a silane-grafted polyolefin or olefin-silane copolymer; and a heat-shrinkable article prepared therefrom. Said material is preferably prepared by a process comprising: reacting a first polyolefin with a silane in the presence of a free-radical initiator to form a silane-grafted resin, or copolymerising a polyolefin with silane;  preparing a mixture of the first silane-modified resin with optional one or more non silane-modified polyolefins, and a silanol condensation catalyst; forming the insulating material or article by melt extruding or moulding said mixture; and crosslinking the insulating material or article by exposing it to combined heat and moisture. The silane-modified, moisture-crosslinkable polyolefin provides the insulating material with high resistance to tracking even in the absence of conventional anti-tracking fillers.
Patent CA-2291567-A1 (CA)
Title: Rubber-erasable aqueous ink for writing material composition and writing materials using the same
Inventor: HAYASHI HIROYUKI
IPC: C09D11/18
Filed: 1999-12-02
Abstract: A rubber-erasable aqueous ink for a writing material composition contains water, a water-soluble polar solvent, and a particulate adhesive colored resin. The particulate adhesive colored resin contains a pigment and an adhesive resin which is adhesive on at least a part of a surface thereof. The particulate adhesive colored resin has a particle diameter distribution such that the amount of particles having a particle diameter of from 2 µm to 20 µm is not less than 70% by weight of all the particles.
Patent CA-2298503-A1 (CA)
Inventor: TITUS JOHN S
IPC: B23C3/35
Filed: 1998-07-29
Abstract: In a method and apparatus for duplicating an original key, the keyway and keycode of the original key are measured and duplicated in a preform. The preform used in the duplication process need not include any keyway or keycode prior to the duplication process and, therefore, a single type of preform may be used in generating duplicates of many different types of keys. The apparatus may be automated to take the measurements of the original key and to cut the duplicate key, thus reducing the possibility of producing a nonfunctional duplicate.
Patent CA-2298782-A1 (CA)
Title: Knock-down separation of emulsions
Inventor: FISHER CAL
IPC: B01D17/00
Filed: 2000-02-16
Abstract: Water-in-oil emulsions are separated by heating the emulsion, pressurizing the heated emulsion, and passing it through a knock-down tube. The apparatus required for this process to work is described. This invention works particularly well to separate used water-in-oil invert drilling fluids.
Patent CA-2300201-A1 (CA)
Title: Variable speed wind turbine generator
Inventor: MIKHAIL AMIR S
IPC: F03D9/00
Filed: 1998-08-07
Abstract: A variable speed system for use in systems, such as, for example, wind turbines, is described. The system comprises a wound rotor induction generator (620), a torque controller (623) and a proportional, integral derivative (PID) pitch controller (1010). The torque controller controls generator torque using field oriented control, and the PID  controller performs pitch regulation based on generator rotor speed.