baber/WOPTO huggingface dataset:
Patent CA-2192507-C (CA)
Inventor: GUTHRIE RODERICK I L
IPC: G01R1/067
Filed: 1996-12-10
Granted: 2004-05-25
Abstract: A molten metal inclusion sensor probe which is immersed in the molten metal and detects inclusions therein by the electric sensing zone method comprises inner and outer steel tubes disposed one within the other to form an annular gas containing space, the tubes being spaced apart from one another by electrically insulating spacing rings between the two tubes at or adjacent to the opposite ends thereof. The space is vented to the exterior of the outer tube, or in the case of a one-shot probe to the interior of the inner tube. A sensing zone member, which may also act to space the tube lower ends, is mounted by the tubes at their lower ends and provides the sensing zone orifice. In some embodiments the seals between the sensing zone member and the tube lower ends are maintained despite differences in expansion coefficients of the materials by tension or compression springs which press the tube ends against the member.
Patent CA-2192564-C (CA)
Inventor: BILLMAN FRED L
IPC: C11D3/00
Filed: 1995-06-13
Granted: 2000-08-08
Abstract: An aqueous carpet cleaning composition restores properties of manufacturer finishes to carpeting which is composed of from about 0.5 % to about 6.0 % by weight of ethylene glycol n-hexyl ether; from about 0.05 % to about 2.0 % by weight of a water-soluble or water-miscible fluorinated hydrocarbon which forms a water and oil repellent surface upon drying; from about 0.25 % to about 5.0 % by weight of a surfactant selected from the group consisting of nonionic surfactants and mixtures thereof; and from about 0.5 % to about 7.0 % by weight of an olefinic/acrylic polymer having an acid number from about 10 to about 450. The composition forms a non-tacky, soil repellent residue upon drying and restores the water repellent finish of the carpet.
Patent CA-2197133-C (CA)
Title: Apparatus and method for creating and resurfacing ice
Inventor: ABEL THOMAS H
IPC: E01H4/02
Filed: 1997-02-10
Granted: 2004-10-26
Abstract: An apparatus and method for creating and resurfacing ice for skating purposes. The apparatus comprises a rigid frame, a water dispersion member connected to the frame, a mat connected to the frame, and a water supply conduit connected to the water disperson member. This device is well suited for indoor and outdoor commercial public and private skating rinks, for community parks rinks and, for home or residential skating rinks.
Patent CA-2197230-C (CA)
Inventor: KLADDERS HEINRICH
IPC: B65D51/16
Filed: 1995-08-11
Granted: 2008-12-09
Abstract: A closure cap for sealing containers without gas bubbles displaces some of the contents of the container when fitted onto the neck of the container and at the same time allows any trapped gas to escape through one or more vents before the closure cap engages in the closure position.
Patent CA-2203618-C (CA)
Inventor: SABATINI MASSIMO
IPC: C07D221/10
Filed: 1997-04-24
Granted: 2002-05-28
Abstract: L'invention concerne de nouveaux composés répondant à la formule (I): (See formula I) dans laquelle m et n, identiques ou différents, représentent 0, 1 ou 2; R1 e t  R2, identiques ou différents, représentent un atome d'hydrogène ou un groupement alkyle ou aryle, ou bien R1 et R2 forment avec l'atome de carbone qui les porte un groupement carbonyle ou un groupement cycloalkyle; R3 représente un atome d'hydrogène ou un groupement alkyle, hydroxy, alkoxy ou aryle; R4 représente un groupement -CO-NR6-OR'6, -CS-NR6-OR'6, (See formula II), -CO2R7, -NH-CO-NH-OH, -NH-CH2-CO2R7,   (see formulas), dans lesquels R6 et R'6, représentent chacun un atome d'hydrogène ou un groupement alkyle, et R7 et R'7, représentent chacun un atome d'hydrogène ou un groupement alkyle; X représente -SO2-, -CO- ou -SO2NH-; R5 représente un groupement alkyle, cycloalkyle, aryle, ou un hétérocycle; et A représente un groupement furane ou benzofurane. L'invention vise également les isomères des composés de formule (I) ainsi que leurs sels d'addition à un acide ou à une base pharmaceutiquement acceptable. Les composés selon l'invention sont utiles à titre d'inhibiteurs de métalloprotéases.
Patent CA-2213426-C (CA)
Title: Circuit arrangement for operating electrical incandescent bulbs
Inventor: KIERMEIER THEODOR
IPC: H05B39/04
Filed: 1997-08-18
Granted: 2004-12-14
Abstract: A circuit arrangement for operating electrical incandescent bulbs, particularly low-volt halogen incandescent bulbs, comprises an inverter in the half-bridge circuit and an overload detector circuit, which comprises a current-voltage transformer, e.g., a resistance (R4), which is serially connected between first half-bridge capacitor (C3) and ground potential.      The current-voltage transformer controls a signal-conditioning and cutoff circuit (R5-R7, C4, C5, D4, T3), which disconnects the inverter at least temporarily in the case of overload or short circuit.      Preferably, current-voltage transformer (R4) of the overload detector circuit is a component of a frequency adaptation circuit (L1, R4), which opposes a decrease in the frequency of the inverter in the upper power connection range. This variant is particularly cost-favorable, since in this case, no additional component is required for detector circuit (R4).
Patent CA-2220418-C (CA)
Inventor: MONFORTE JOSEPH ALBERT
IPC: C12Q1/68
Filed: 1996-04-30
Granted: 2003-06-03
Abstract: The present invention provides modified oligonucleotide primers designed to incorporate a cleavable moiety so that a (3') portion of the primer (linked to an extension product) can be released from an upstream (5') portion of the primer. Upon selective cleavage of the cleavable site, primer extension products that contain about five or fewer base pairs of the primer sequence are released, to provide more useful sizing and sequence information per fragment than extension products containing the entire primer.
Patent CA-2231697-C (CA)
Inventor: HAVLINEK KENNETH
IPC: F16L55/11
Filed: 1998-03-09
Granted: 2001-07-03
Abstract: This invention is a new device that can be used to plug perforations in materials. This plug comprises a cylinder plug with a tapered bore partially extending through the plug from one end. A cylinder pin that is tapered substantially the same as the plug will fit in the plug after installation is complete. A shear flange surrounds the pin so that when the pin is installed in the plug, the shear flange is against a plug flange. The pin is adhered to the plug by means such as a thin layer of epoxy or glue which allows the pin and plug to be handled as a single component. The pin is designed so that while in this position, there is no significant radial expansion of the plug. The pin has a pattern of holes or grooves that extend the entire length of the pin in order toallow for the expansion of any trapped fluids in the bore of the plug. The pin can have a groove along the outer diameter to allow for easier handling of the pin. The diameter size of these openings are not important, as long as the openings are large enough to resist plugging with debris.
Patent CA-2232909-C (CA)
Inventor: BYCHKOWSKY MARK
IPC: G01F23/04
Filed: 1998-03-19
Granted: 1999-11-23
Abstract: A dipstick wiping device for use in measuring fluid reservoir levels in an internal combustion engine is described. The dipstick wiping device comprises a pliable converging tubular body, a fluid wiping element and mounting means. The fluid wiping element comprises a sponge removably mounted around the inner surface of the body by a locking ring. The dipstick wiping device is connected to a dipstick tube by first removing the dipstick from the dipstick tube and then fitting the mounting means over the end of the dipstick tube. The mounting means includes a tie strap for locking the dipstick wiping device into place. The tie strap allows the dipstick wiping device to be mounted on a variety of dipstick tubes, regardless of the diameter of the dipstick tube. The dipstick is then reinserted into the dipstick tube by passingthe dipstick through the body. In operation, the user removes the dipstick from the dipstick tube while applying pressure to the outer surface of the pliable converging tubular body. This pressure forces the fluid wiping element inward such that the sponge cleans the dipstick during removal. The pressure is then released and the clean dipstick is reinserted into the dipstick tube to measure the fluid level. Of note is that the dipstick wiping device is designed as an add-on device and all factory-installed components are retained, thereby minimizing the risk of contamination to the fluid.
Patent CA-2234781-C (CA)
Title: Fuel tank filler assembly for engine driven welder
Inventor: PETERS MARK E
IPC: B23K9/32
Filed: 1998-04-15
Granted: 2004-11-23
Abstract: An engine driven welder has a fuel tank with a filler tube that extends upwardly from a reservoir in the machine base.      The filler tube upper end and a cap thereon are below the machine top cover. The machine top cover has a cutout into which is installed a grommet that closes the cutout and that fully protects the filler tube upper end and the cap. The grommet has a hole that seals over a top portion of the filler tube such that any spilled fuel does not leak inside the machine. The filler tube has an expansion space that prevents splashback and spillover during fueling. An angled tail pipe directs engine exhaust away from the welding machine in any desired direction.
Patent CA-2237650-C (CA)
Inventor: TIDWELL RICHARD RAY
IPC: A61K31/38
Filed: 1996-11-15
Granted: 2006-10-24
Abstract: La présente invention concerne une thérapie contre la pneumonie par Pneumocystis carinii chez un sujet justifiant d'une telle thérapie. La thérapie consiste en l'administration par voie orale au sujet d'un bis-benzamidoxime, ou de l'un de ses sels pharmaceutiquement acceptables, qui est réduit chez le sujet de façon à produire une benzamidine dotée d'activité anti-P. carinii. Sous une autre réalisation, la thérapie de la présente invention peut consister en l'administration par voie intraveineuse au sujet d'un composé actif tel que celui de l'invention. L'invention concerne également des formulations pharmaceutiques et des composés actifs convenant pour la mise en oeuvre de la présente invention.
Patent CA-2250763-C (CA)
Title: Olefin solution polymerization
Inventor: STULTZ JEFF H
IPC: C08F2/00
Filed: 1997-04-01
Granted: 2004-01-27
Abstract: A solution polymerization system for polymerizing an olefin monomer by reacting the monomer with catalyst and solvent has been invented. The system in one aspect includes a flow loop with a product polymer outlet, the flow loop forming a recycling reactor, a cataylst inlet on the flow loop through which catalyst and solvent flow into the flow loop, a monomer inlet on the flow loop through which monomer and solvent flow into the flow loop and, with the catalyst, form a reactant material stream, a first heat exchanger on the flow loop for receiving the reactant materials stream and any formed polymer and for removing heat of reaction or polymerization from the flow loop, and pump apparatus for pumping the reactant materials stream and formed polymer in the flow loop and from the first heat exchanger to the product polymer outlet. In one aspect, the system includes at least one additional heat exchanger on the flow loop for receiving the reactant materials stream and formed polymer and for removing heat of reaction or polymerization from the flow loop, the pump apparatus pumping formed polymer and remaining reactant materials to the product polymer outlet, and a portion of the formed polymer and remaining reactant materials flowing out from the product polymer outlet and the remainder recycling through the flow loop. In one aspect systems and methods according to the present invention are used to make polyethylene.
Patent CA-2251258-C (CA)
Title: Cutting tool for toothed articles
Inventor: CLARK RAYMOND E
IPC: B23F21/22
Filed: 1997-03-24
Granted: 2004-05-11
Abstract: A cutter head (2) including a cutter body portion (6) having a first outer surface (13) and a second outer surface (14) located inward of the first outer surface. Both first and second outer surfaces are interrupted by a plurality of blade receiving slots (12) which extend inward into the cutter body portion (6). The first and second outer surfaces are arranged such that an annular projection (16) is formed protruding from the second outer surface (14) and extending to the first outer surface (13). The annular projection is also interrupted by the plurality of cutting blade slots (12) thus forming a plurality of individual projections. The cutter head (2) additionally includes a clamping ring (20) extending about the cutter body (6) and secured to the annular projection (16). The clamping ring comprises first and second ring portions (24, 26) which together define an inner receiving channel (32) having a form complementary with the form of the annular projection (16) whereby securing the first and second ring members (24, 26) together about the annular projection (16) positions the annular projection in the receiving channel and secures the clamping ring (20) to the cutter body (6). The cutter head (2) may include a generally concave shaped clamping block (34) which is attached to the receiving channel (32) in the clamping ring (20). The cutter head (2) may further comprise blade receiving slots (12) wherein the inner end portion (60) of the slots includes a pair of angled blade mounting surfaces (62, 64). Also included are cutting blades (87, 89) having side portions (82, 84) of a form which is complementary to the angled blade mounting surfaces (62, 64) of the cutter head (2).
Patent CA-2264908-C (CA)
Inventor: HEIDARI BABAK
IPC: C25D7/12
Filed: 1997-09-05
Granted: 2006-04-25
Abstract: Dans un procédé de gravure anisotrope d'une structure dans une substance électroconductrice, on utilise un agent de gravure qui, en solution concentrée, permet de réaliser une gravure isotrope de structures dans la substance à graver. Cette substance est mise en contact avec l'agent de gravure dans une solution qui est diluée de sorte que l'agent de gravure ne puisse être utilisé dans la gravure isotrope. L'agent de gravure est soumis, à côté de la substance à graver, à un champ électrique d'une intensité permettant de réaliser la gravure anisotrope. L'invention concerne, en outre, un fluide de gravure comprenant un agent de gravure dans une solution diluée, cet agent étant présent dans une concentration maximale de 200 mM, ainsi que l'utilisation de ce fluide de gravure pour fabriquer des structures égales ou inférieures à 50  mu m.
Patent CA-2267721-C (CA)
Inventor: TAKAGI TSUYOSHI
IPC: H04L9/30
Filed: 1999-03-24
Granted: 2002-07-30
Abstract: A new scheme for fast realization of encryption, decryption and authentication which can overcome the problems of the RSA cryptosystem is disclosed. The encryption obtains a ciphertext C from a plaintext M according to C ~ M e (mod n) using a first secret key given by N (~ 2) prime numbers p1, p2, ~, p N, a first public key n given by a product p1 k1p2 k2 ~ p N kN where k1, k2, ~, kN are arbitrary positive integers, a second public key a and a second secret key d which satisfy ed ~ 1 (mod L) where L is a least common multiple of p1-1, p2-1, ~, pN-1. The decryption recovers the plaintext M by obtaining residues M p1k1, M p2k2, ~, M pNkN modulo p1k1, p2k2, ~, p NkN, respectively, of the plaintext M using a prescribed loop calculation with respect to the first secret key p1, p2, ~, p N, and by applying the Chinese remainder theorem to the residues M p1k1, M p2k2, ~, M pNkN. This encryption/decryption scheme can be utilized for realizing the authentication.
Patent CA-2278036-C (CA)
Title: Percussion movement apparatus
Inventor: JANG MYEONG SOO
IPC: B25D9/14
Filed: 1999-07-19
Granted: 2005-11-29
Abstract: In order to maximize percussion force and reduce the number of components and weight by installing a valve between a piston and a cylinder, the invention provides a percussion movement apparatus which comprises a valve installed between the piston and the cylinder, the valve being constructed to open/close a flow path and organically cooperate with the piston by predetermined movements thereof, the valve having substantially cylindrical overall shape whose both end surfaces which is upper and lower end surfaces thereof with different cross sectional areas, and also the valve including a longitudinal piston hole with multistage sills, a plurality of holes extending rectangularly to the piston hole for communicating the piston hole with exterior, and an annular projection with front and rear peripheral surfaces partially formed on a peripheral surface of the valve, the cylinder being mounted the outside of the valve and including a plurality of cylinder holes for reciprocating the piston; and a rear cover mounted on the rear of the valve and the cylinder, the piston, the cylinder and the valve having a plurality of chambers and a valve switching chamber defined by making a difference in diameter along a longitudinal direction for providing predetermined annular chambers between inner and outer peripheral surfaces thereof into which the fluid can be introduced, and the cylinder including a cylinder block formed with a plurality of fluid passages for inflow/discharge of a working oil.
Patent CA-2278370-C (CA)
Inventor: SCHANKE DAG
IPC: C10G2/00
Filed: 1998-01-23
Granted: 2007-06-26
Abstract: A process and an integrated plant are provided herein to be used for the preparation of synthetic fuel (synfuel) and for the production of electrical energy. The process includes feeding a starting material comprising a first part of said hydrocarbonous gas to the integrated plant for converting the starting material via a carbon monoxide-containing gas to a stream of converted products. The converted products comprise major part of chemical reaction products, and an exhaust gas stream comprising a major part of unreacted amounts of carbon monoxide, hydrogen gas, synthesis gas, residual amounts of low molecular products, steam, carbon dioxide and inert components. A second part of the hydrocarbonous gas and an oxygen-containing gas is fed to a power station.  The power station includes at least one gas turbine for the production of mechanical power or electrical power for the operation of machinery in the integrated plant and for export, and for the manufacture of a warm exhaust gas.  The exhaust gas from a gas turbine of the gas power station is supplied as a heat exchange medium for a heat recovery unit at a temperature of at least about 500° C to a prewarming step for heating the starting material for the preparation of the carbon monoxide-containing gas of the conversion plant.
Patent CA-2280739-C (CA)
Title: Illumination system with light recycling to enhance brightness
Inventor: BEESON KARL W
IPC: F21Y103/00
Filed: 1998-02-09
Granted: 2005-12-06
Abstract: An optical illumination system is comprised of: (a) a light source means having a reflective emitting surface and an intrinsic luminance (brightness); (b) a light transmitting means (c) a light reflecting means to reflect and recycle a portion of the light emitted by the light source means back to the light source means; and (d) a light extracting means to extract a portion of the light from the light transmitting means and direct the light to the output of the illumination system. The resulting illumination system achieves an enhanced output luminance. Under certain conditions, it is possible to achieve an output luminance that is greater than the intrinsic luminance of the bare light source.
Patent CA-2282572-C (CA)
Title: A surface covering backing containing polymeric microspheres and processes of making the same
Inventor: CHEN HAO A
IPC: D06N3/00
Filed: 1999-01-12
Granted: 2002-09-24
Abstract: A secondary backing for surface coverings is disclosed which comprises at least one thermoplastic material optionally having polymeric microspheres dispersed therein. A textile substrate comprising a primary backing with textile fibers extending upwardly from the backing and forming a surface and the above-described secondary backing attached thereto is also described.  Methods of making the textile substrate and the secondary backing which can be foam or hardback are also described. Also described is a resilient surface covering, such as vinyl flooring, using the secondary backing of the present invention in one or more layers.
Patent CA-2284107-C (CA)
Inventor: AJOULA HARMESH SINGH
IPC: A61K47/48
Filed: 1998-03-18
Granted: 2008-06-10
Abstract: L'invention porte sur un procédé de production d'un peptide dont la fonction peut être modifiée de façon temporaire et/ou compétitive, ce peptide étant éventuellement confiné sur son site actif. Le peptide produit selon ce procédé peut être utilisé dans des dosages, des procédés de purification et dans des médicaments.
Patent CA-2284245-C (CA)
Inventor: CHONG DANIEL T
IPC: G06N5/04
Filed: 1990-09-04
Granted: 2001-02-06
Abstract: An object access system for retrieving objects in response to requests identifying requested objects, the system comprising an access structure consisting of a plurality of tables where each table is identified by a unique table identifier and has a plurality of rows where each row has a plurality of fields and is identified by a unique primary key in one of the fields and where a field may also contain objects; a row index for each table, each row index having entries ordered on the primary key of the rows in the table where each entry points to a row of fields in the table; a table index ordered on the table identifier for the tables, the table index having an entry for each table which point to the row index for that table and access means, responsive to requests for an object having an associated table identifier and primary key, for searching the table index for the requested table identifier and for retrieving from the table index entry for the requested table identifier the pointer to the row index for the requested table identifier, searching the pointed to row index for the requested primary key and retrieving from the row index entry for the requested primary key the pointer to the row of fields and searching the pointed to row of field for the requested object and retrieving the requested object.
Patent CA-2284567-C (CA)
Title: Scratch-off lottery game with dual transparent layers
Inventor: HOLMAN STEPHEN JOHN
IPC: A63F3/06
Filed: 1999-01-18
Granted: 2004-08-17
Abstract: A scratch-off lottery game including a substrate having at least one ar ea having printed indicia thereon, the printed indicia being covered by at leas t one clear, transparent layer which can be removed by scratching, and at least on e layer on said clear transparent layer which is colored, transparent and made of a non-scratch-off material, the colored transparent layer being affixed to the clear transparent layer in a manner in which removing the clear transparent layer by scratching results in removal of the colored transparent layer.
Patent CA-2284939-C (CA)
Inventor: MITCHELL WILLARD N
IPC: C10G2/00
Filed: 1998-04-29
Granted: 2006-02-14
Abstract: Il est possible de régénérer un catalyseur particulaire réversiblement désactivé présent dans des boues d'hydrocarbures de synthèse en faisant circuler les boue de la masse de boues dans une zone de régénération où de l'hydrogène entre en contact avec les boues et régénère le catalyseur, entrainant la formation de boues à catalyseur régénéré et d'un effluent gazeux contenant des substances désactivant le catalyseur. L'effluent gazeux est séparé puis extrait des boues régénérées avant de repasser dans la masse. On évite ou réduit ainsi la contamination et la recontamination de la masse par les substances désactivantes produites pendant le processus de régénération.