baber/WOPTO huggingface dataset:
Patent CA-2190134-C (CA)
Inventor: CZEKAI DAVID A
IPC: A61K9/14
Filed: 1995-05-08
Granted: 2005-03-08
Abstract: A continuous method of preparing submicron particles of a therapeutic or diagnostic agent comprises the steps of continuously introducing the agent and rigid grinding media into a milling chamber, contacting the agent with the grinding media while in the chamber to reduce the particle sire of the agent, continuously removing the agent and the grinding media from the milling chamber, and thereafter separating the agent from the grinding media. In a preferred embodiment, the grinding media is a polymeric resin having a mean particle size of less than 300 µm. In another preferred embodiment, the agent, grinding media and a liquid dispersion medium are continuously introduced into the milling chamber. In a further embodiment, the agent and grinding media are recirculated through the milling chamber. The method enables the use of the grinding media, e.g., of a particle size of less than about 300 µm, in a continuous grinding process which provides extremely fine particles of the agent, e.g., particles less than 100 nm in size, while avoiding problems, e.g., separator screen plugging, associated with prior art processes requiring the separation of agent from the grinding media in the milling chamber.
Patent CA-2203227-C (CA)
Title: Method for forming a seamless stainless steel sink bowl with a grid ledge and product
Inventor: LANZ MELCHIOR
IPC: B21D22/26
Filed: 1997-04-21
Granted: 2005-06-07
Abstract: A method for forming a stainless steel sink bowl having a top edge, a sidewall and a bottom surface interconnected by smooth corner surfaces from a single sheet is provided. The method comprises drawing a stainless steel blank between a first draw die and a first forming die to form a first drawn blank having an unfinished bowl with a length, width and depth which are less than the finished length and width and generating a deformation warmth in the blank at the corner surfaces in proximity to the rim as the first drawn blank is being formed to a temperature of approximately 70°C to 90°C.      The first drawn blank is immediately removed from the first draw die and the first forming die and transferred to a finish draw die. The first drawn blank is finish drawn, prior to loss of the deformation warmth, between the finish draw die and a finish forming die to form a finish drawn blank having a finished bowl while simultaneously forming a grid ledge at a medial position in a portion of the sidewall of the finished bowl. A stainless steel sink bowl formed from a single sheet of material and having a grid ledge is also provided.
Patent CA-2207256-C (CA)
Title: Seal for a universal joint trunnion
Inventor: REYNOLDS JAMES T
IPC: F16C33/78
Filed: 1997-06-06
Granted: 2006-04-11
Abstract: An elastomeric seal assembly for use with a bearing cup mounted on a trunnion of a universal joint cross member includes an elastomeric seal attached to a metallic support ring. The metallic rings are pressed into the open ends of the bearing cups and are retained therein by friction. The elastomeric seals each include first, second and third radially inwardly extending sealing lips. When the bearing cups and sealing assemblies are mounted about the trunnions the annular lubricant sealing lip engages the frustoconical sealing surface of the trunnion. The annular lubricant sealing lip is slanted towards the closed end of the cup to prevent lubricant from flowing past the seal and out of the roller bearing region. The second sealing lip engages the cylindrical sealing surface of the trunnion and is slanted towards the open end of the cup to resist the entry of abrasive contaminants into the roller bearing region. A third sealing lip engages the cylindrical sealing surface of the trunnion and is slanted in the same direction as the first contaminant sealing lip. The second contaminant sealing lip resists the movement of contaminants towards the first contaminant sealing lip thereby prolonging the life of the seal and universal joint.
Patent CA-2208093-C (CA)
Title: Process for reusing slide gate plates and plate for this closure
Inventor: HANSE ERIC
IPC: B22D11/10
Filed: 1996-10-25
Granted: 2006-08-08
Abstract: Process for reusing the plates of a slide gate for a metallurgical container . The gate has an upper indentation and a lower indentation for receiving a set of two refractory plates, each of these plates resting i n an indentation by a face that becomes its support face and cooperating with the other plate by a face that becomes its characterized sliding face. A set of refractories comprised of a new plate associated with a plate that had been used once is used in the slide gate (2 ), and in that when the plates (12, 16) are changed the new plate is mounting in a lower or upper charging indentation (14, 18), this indentation remaining the same at each plate change, the plate used once being mounted in the other indentation, which forms a recycling indentation.
Patent CA-2209065-C (CA)
Title: Catalyst composition for transalkylation of alkylaromatic hydrocarbons and process for production of xylene
Inventor: ICHIOKA RYOJI
IPC: C07C4/18
Filed: 1997-06-27
Granted: 2006-05-30
Abstract: Disclosed herein is a catalyst composition for transalkylation of alkylaromatic hydrocarbons which exhibits the percent conversion of ethyltoluene higher than 50 wt%, is composed of mordenite (100 pbw), inorganic oxide and/or clay (25-150 pbw), and at least one metal component of rhenium, platinum, and nickel, and contains mordenite such that the maximum diameter of secondary particles of mordenite is smaller than 10 µm. Disclosed also herein is a process for producing xylene by the aid of said catalyst from alkylaromatic hydrocarbons containing C9 alkylaromatic hydrocarbons containing more than 5 wt% ethyltoluene and less than 0.5 wt% naphthalene, in the presence of hydrogen.
Patent CA-2213308-C (CA)
Title: Objective lens driving device and optical disc apparatus using the same
Inventor: IZUMI KATSUHIKO
IPC: G11B7/135
Filed: 1997-08-18
Granted: 2001-10-02
Abstract: It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam is passed through a space surrounded by a tracking coil and a focusing coil which are adjacent to each other and fixed in a holder. Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances which are radially extended with the sliding shaft at the center are provided in the lens holder, and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens and a second objective lens are arranged so that the objective lens arrangement angle at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft is displaced, by a predetermined amount, from the magnetic circuit arrangement angle at which the magnetic substances and the magnets are arranged with respect to the shaft center of the sliding shaft.
Patent CA-2213740-C (CA)
Title: Recherche en dictionnaire de codage algebrique privilegiant la profondeur pour codage rapide de la parole
Inventor: ADOUL JEAN-PIERRE
IPC: G10L19/12
Filed: 1996-03-05
Granted: 2003-01-21
Abstract: La présente invention concerne une recherche dans un dictionnaire de codage afin de coder un signal sonore. Ce dictionnaire de codage se compose d'un jeu de vecteurs de codage à 40 positions et comprenant N impulsions d'amplitude non nulle affectables à des positions valides prédéfinies. Pour réduire la complexité de la recherche, on a recours à une recherche du type "profondeur d'abord" mettant en oeuvre une arborescence dont les niveaux sont classés de 1 à M. A chacun de ces niveaux, une opération de constitution d'itinéraire de recherche se produit. Un itinéraire de recherche candidat, issu d'un niveau antérieur, trouve ainsi sa suite par sélection d'un nombre prédéfini de nouvelles impulsions et par sélection de positions validées pour lesdites nouvelles impulsions selon une règle spécifique d'ordonnancement des impulsions et un critère de sélection spécifique. Un chemin de recherche issu du premier niveau, et se prolongeant dans les niveaux ultérieurs par des opérations de constitution de chemins de recherche permet ainsi de déterminer les positions respectives de N impulsions d'amplitude non nulle du vecteur de codage candidat. Pour que l'analyse des impulsions d'origine permette de lancer la recherche dans des conditions favorables, on a recours à une évaluation de vraisemblance des positions d'impulsions, et, pour confirmer les progrès réalisés et sélectionner le meilleur vecteur de codage candidats parmi ceux qui sont en concurrence, on a recours à un rapport de maximisation se basant sur le critère de sélection.
Patent CA-2214453-C (CA)
Title: Nouvelles cytokines aviaires et sequences genetiques codant celles-ci
Inventor: LOWENTHAL JOHN WILLIAM
IPC: A61K48/00
Filed: 1996-03-05
Granted: 2013-06-25
Abstract: La présente invention se rapporte généralement à des polypeptides recombinants présentant les propriétés des cytokines aviaires ou des propriétés analogues à celles des cytokines aviaires, ainsi qu'à des séquences génétiques codant ces polypeptides. La présente invention porte plus particulièrement sur des polypeptides recombinants d'interféron de type II aviaire, et spécifiquement sur l'interféron-.gamma. aviaire (IFN-.gamma.) et ses dérivés, homologues et analogues, ainsi que sur leurs utilisations comme modulateurs de la réponse immunitaire et comme agents favorisant la croissance.
Patent CA-2214769-C (CA)
Title: Fuel-cells generator system and method of generating electricity from fuel cells
Inventor: KAWATSU SHIGEYUKI
IPC: H01M8/06
Filed: 1997-09-05
Granted: 2001-07-24
Abstract: A fuel-cells generator system of the present invention carries out an appropriate control to ensure a high output even when a catalyst carried on an electrode is poisoned.  An electronic control unit of the fuel-cells generator system measures an output voltage E of fuel cells, a concentration D of carbon monoxide included in a gaseous fuel, a temperature T of the fuel cells, and a pressure P of the gaseous fuel at steps S100 through S130.  When the output voltage E has been lowered by the amount of change that is not less than a predetermined voltage E0 at step S140 and when the concentration D of carbon monoxide measured by a carbon monoxide sensor represents the poisoned state of a catalyst carried on the anodes of the fuel cells at step S150, the temperature T of the fuel cells is gradually increased at step S180.  The pressure P of the gaseous fuel is also gradually increased at step S190, in order to enable a partial vapor pressure in the gaseous fuel to be kept at a constant value even under the condition of the increased temperature of the fuel cells. This structure keeps the partial vapor pressure in the gaseous fuel at a constant level, thus preventing the partial pressure of hydrogen in the gaseous fuel from being lowered and ensuring a continuous supply of hydrogen to the anodes.
Patent CA-2214817-C (CA)
Inventor: BILLING MARTYN KENNETH
IPC: E02D29/14
Filed: 1997-09-05
Granted: 2004-02-24
Abstract: The invention relates to a multi-layer composite panel and a method of making same. More particularly, the invention relates to a composite panel composed of a core of at least two layers of structural beam elements and a framework for holding the beam elements in place, with the beam elements and the core bound together and wrapped with fibre reinforcing fabric saturated with uncured resin, forming a unitary panel once the resin has cured.
Patent CA-2214862-C (CA)
Title: A steering head set of bicycle
Inventor: LIN JIN-CHEN
IPC: B62K21/06
Filed: 1997-09-08
Granted: 2001-05-15
Abstract: The present invention relates to a steering head set of bicycle, which comprises an upper and a lower cup kits, which includes two bearing cups, a cap and a plugging adapter ring at least; wherein, the bearing cup is to set several balls into an inside cup face of a bearing collar along the inner ball track with the outer race of a cone ring, in combining, a retainer ring jam into the inner cup face of the bearing collar nearing the rim of open end to locate above-mentioned parts into the bearing collar as an integrated component; the cap has an inner and an outer collars corresponding to the cone ring of the bearing cup in the upper cup kit, in which the inner collar forms an outside taper face for retaining on the inside cone face of the cone ring, and several axial open slots along the edge of the open; the plugging adapter ring has a taper face formed on the outside head for retaining on the inside cone face of the cone ring of the bearing cup in the lower cup kit, and several axial open slots along the edge of the open; in combining, the two bearing cups are fixed on the steering tube from both ends respectively, co-operating with the cap and the plugging adapter ring pressing down from the both ends separately, the shaft tube of the front fork is held on excepting swivelling.
Patent CA-2216734-C (CA)
Title: Microcellular foams containing an infrared attenuating agent and a method of using
Inventor: IMEOKPARIA DANIEL D
IPC: C08K3/04
Filed: 1996-03-15
Granted: 2007-07-03
Abstract: Disclosed is an open-cell microcellular foam comprising an alkenyl aromatic polymer foam, the foam being characterized in that the foam has an average cell size of 70 micrometers or less, the foam being evacuated, the foam containing an infrared attenuating agent in a quantity sufficient to reduce the thermal conductivity of the foam relative to a corresponding foam without the infrared attenuating agent. Also disclosed is a closed cell, unevacuated microcellular foam comprising an alkenyl aromatic polymer foam, the foam having an average cell size of 1.0 micrometers or less, the foam being characterized in that it contains an infrared attenuating agent in a quantity sufficient to reduce the thermal conductivity of the foam relative to a corresponding foam without the infrared attenuating agent.
Patent CA-2221373-C (CA)
Inventor: SIGLER C EDWARD
IPC: H04W4/12
Filed: 1997-11-18
Granted: 2002-08-06
Abstract: In a mobile communication system, a system for providing communication between multiple users in a closed user group arrangement includes first and second mobile earth terminals (METS) registering with the mobile satellite system. The first MET selects a closed user group network identifier (NET ID) representing a NET group to establish voice communication therewith and transmits the NET ID to a central controller. The central controller receives the NET ID from the first MET, validates the first MET for communication, validates the NET ID, allocates a frequency for the NET group, and broadcasts the message to the NET group informing the NET group of the allocated frequency. The second MET tunes to the frequency in response to the message broadcast by the central controller. A full service dispatch (FSD) system monitors and displays detailed conference activity. The FSD system provides a display conference function that displays all the conference activity usage data; provides a display active conference function that displays updated information in real-time for active conferences; provides a monitor conference function permits selective monitoring of one or more conferences; and provides a monitor user function that permits selective monitoring of one or more users.
Patent CA-2222597-C (CA)
Inventor: MCGOVERN STEPHEN JAMES
IPC: C10G35/10
Filed: 1996-05-17
Granted: 2007-07-03
Abstract: A cyclone (500) suitable for use in a third stage separator in a fluid catalytic cracking unit or to improve other gas/solid separations. The cyclo ne has an inlet for gas and entrained solids (515) and a clean gas outlet tube (520) at one end of a cyclone body. Solids and some gas are withdrawn through a solid s outlet (545) and discharged into a catch chamber. Some of the gas discharged with the solids into the catch chamber is returned to the interior of the cyclone body through a gas reflux opening in the cyclone (555). Chaotic reflux of ga s back into the cyclone through the solids outlet is eliminated.
Patent CA-2226388-C (CA)
Inventor: FORSCHIRM ALEX
IPC: C08K3/26
Filed: 1996-02-26
Granted: 2006-08-22
Abstract: A self-lubricating polymeric composition, characterized as a melt blend of a thermoplastic polymer and a lubricating system containing ultra high molecular weight polyethylenes, a polyester, acid metal salts, calcium salts, antioxidants and stabilizers. The composition may be prepared into shaped articles which exhibit improved surface wear resistance and coefficients of friction.
Patent CA-2227625-C (CA)
Inventor: OSTMARK HENRIC
IPC: C06B25/00
Filed: 1996-07-26
Granted: 2008-06-03
Abstract: The invention relates to a method of preparing dinitramidic acid HN(NO2)2 an d salts thereof having the formula M+n(-N(NO2)2)n, wherein M is a metal cation or a nitrogen-containing cation and n = 1-3. The dinitramide salt can be used as oxidiser in solid propellants. Dinitramidic acid is prepared by nitration of a compound selected from a gro up consisting of NH2NO2, NH4NH2CO2; NH2SO3H, NH(SO3H)2, N(SO3H)3, and its salts with metal cations or organic cations, e. g. NH(SO3NH4)2, and other products formed when ammonia is reacted with sulphuric trioxide, with a common nitrating acid such as nitric acid/sulphuric acid or nitric acid/acetic anhydride. The invention also relates to a method of preparing dinitramide salt, comprising neutralisation of dinitramidic acid with a neutralising agent, e.g. ammonia, and recovery of the dinitramide salt from a mixture of salts formed in the neutralisation. An aqueous solution of the salt mixture is passed through a column containing an adsorbing agent which adsorbs the dinitramide salt and is selected from a class consisting of activated carbon, silica gel and zeolites. The dinitramide salt is eluted wi th an elution agent consisting of hot water and/or a polar organic solvent, e.g. acetone, acetonitrile, 2-propanol and other lower alcohols and mixtures thereof.
Patent CA-2230834-C (CA)
Inventor: BAZELL GRAYDON C
IPC: B01D21/00
Filed: 1996-08-29
Granted: 2002-12-31
Abstract: Un concentrateur (10) pour un mélange de liquide et de matières solides comporte un premier récipient (18) ayant une portion supérieure et une portion inférieure. La portion supérieure a une dimension transversale qui est supérieure à la dimension transversale de la portion inférieure. Un second récipient (32) vient se placer dans le premier récipient et il comporte des portions supérieure et inférieure adaptées à celles du premier récipient. La portion supérieure des premier et second récipients forme un canal ou une chambre (44) entre les deux. Une autre chambre (46) est formée entre les portions inférieures des premier et second récipients, mais elle est plus étroite transversalement que la première chambre.
Patent CA-2232458-C (CA)
Title: Dispositif pour devisser des raccords filetes
Inventor: HILDEBRAND DAVID L
IPC: B25B27/18
Filed: 1996-09-20
Granted: 2002-04-16
Abstract: L'invention concerne un dispositif de dévissage (10) pour dévisser des raccords filetés vissés dans une première direction et difficiles à enlever. Le dispositif (10) comprend un corps (12) présentant une première extrémité (14) et une seconde extrémité (16), la première extrémité comprend une ouverture (20) qui s'étend vers la seconde extrémité (16), dimensionnée pour recevoir le raccord fileté et qui se rétrécit d'une manière continue depuis un premier diamètre (24), au niveau de la première extrémité (14), jusqu'à un second diamètre (26) au niveau de la seconde extrémité (16), le premier diamètre (24) étant supérieur au second diamètre (26). L'ouverture comprend aussi une surface interne (22) filetée dans la direction opposée à la première direction. Le dispositif (10) comprend en outre une structure pour faire tourner le corps (12), cette rotation provoquant l'engagement du filetage interne du dispositif de dévissage (10) avec le raccord fileté et la rotation de ce dernier dans la direction qui convient pour enlever le raccord fileté vissé dans la première direction.
Patent CA-2236890-C (CA)
Title: Razor blade manufacture
Inventor: WILSON ROBERT
IPC: B26B21/54
Filed: 1996-11-13
Granted: 2001-10-23
Abstract: A razor blade construction is manufactured of a thin element of blade stock forming the cutting edge portion which is welded or otherwise attached to a more rigid support member. A plurality of support members are produced from a coil (20) of flat sheet material by a cutting and forming process, each of the supports being retained at its edge to an adjacent support to provide a coil (20) of blade supports. The coil of supports is then fed into a device (26) for severing each support from the coil and registering it with a blade element for attachment thereto.
Patent CA-2238562-C (CA)
Inventor: KOGAN EDUARD
IPC: B66F7/20
Filed: 1998-05-26
Granted: 2008-08-19
Abstract: A twin post lift has a master and slave cylinder system in which the maser and slave cylinders each drive a lifting carriage, and each of the lifting carriages is mounted within, and is restricted to longitudinal travel within, an upright member. In the event that there is a loss of pressure in the hydraulic system under load, it is important that the lift be prevented from descending unexpectedly, or uncontrolledly. The upright can be manufactured in the form of a roll formed channel section. The legs of the channel section are formed to define guides for guide followers mounted on the lifting carriage, thereby restraining the travel of the lifting carriages to travel in the vertical direction. The lifting carriage has a rack formed on its back face. The rack is nested within the upright member and is not visible in use. The back of the channel is formed with an outwardly protruding step to accommodate the rack. A safety stop, in the nature of a spring loaded safety dog, is mounted to the upright and extends through the wall of the protrusion to engage the rack.
Patent CA-2240937-C (CA)
Title: Procede de resolution optique de 3-(p-chlorophenyl)-glutaramide
Inventor: NASSIMBENI LUIGI RENZO
IPC: C07C211/27
Filed: 1996-12-16
Granted: 2004-06-01
Abstract: Ce procédé de résolution optique de 3-(p-chlorophényl)glutaramide racémique (GAM) pour obtenir son isomère R R-COOH et son isomère S S-COOH, comprend les étapes consistant soit: (1) à faire réagir le 3-(p-chlorophényl)-glutaramide racémique dissous dans un solvant approprié avec S-(-)- alpha -méthylbenzylamine de la formule H2N-S', (2) à précipiter R-CO2<->.H3<+>N-S' dans la solution de l'étape (1) et à séparer le précipité de la solution, (3) à dissoudre le précipité de l'étape (2) dans de l'eau, en ajoutant un acide approprié, et (4) à précipiter R-COOH dans la solution de l'étape (3) et à séparer le précipité de la solution; soit (5) à faire réagir -3-(p-chlorophényl)-glutaramide racémique dissous dans un solvant approprié avec R-(+)- alpha -méthylbenzylamine de la formule H2N-R', (6) à précipiter S-CO2<->.H3<+>N-R' dans la solution de l'étape (5) et à séparer le précipité de la solution, (7) à dissoudre le précipité de l'étape (6) dans de l'eau, en ajoutant un acide approprié, et (8) à précipiter S-COOH dans la solution de l'étape (7) et à séparer le précipité de la solution. On peut utiliser l'isomère R de GAM dans la production de R-baclofène et l'isomère S de GAM dans la production de S-baclofène.