baber/WOPTO huggingface dataset:
Patent CA-2026113-C (CA)
Inventor: FURUMOTO GORO
IPC: B32B1/08
Filed: 1990-01-25
Granted: 1998-12-01
Abstract: The present invention relates to a novel composite material, that is, a prepreg, obtained by bonding a film (1) comprised of an organic polymer having substantially no melting point and having a high modulus of 700 kg/mm2 or more and a high strength of 35 kg/mm2 or more and a resin layer (2) and/or fiber-reinforced layer (3), a composite molded body, and a method of manufacturing a composite molded body. The composite molded body obtained by bonding the film (1) and the resin layer (2) of the present invention has superior strength, excellent pliability, and large toughness in all directions. Further, the composite molded body obtained by bonding the film (1) and the fiber-reinforced resin layer (3) has both an extremely large impact resistance which could never be obtained with conventional molded bodies and also a strength and modulus greater than in the past. The molded body can be suitably used for aerospace equipment, sports goods, leisure goods, etc. making use of its light weight, corrosion resistance, and other properties in addition to the above superior properties.
Patent CA-2027913-C (CA)
Title: Dissolved gas stripping apparatus and methods
Inventor: ZUBACK JOSEPH E
IPC: B01D19/00
Filed: 1990-10-18
Granted: 1996-07-23
Abstract: A method for removal of dissolved gas from water, particularly removal of ozone from water following its treatment with ozone for the purpose of purification, includes the steps of providing an enclosed zone capable of containing a quantity of water, flowing influent water into such zone at a first position thereof to partially fill it leaving a liquid free space within the zone above water contained therein, applying a vacuum to the liquid free space with simultaneous removal of gas from the space, circulating the water within the zone by providing a vertically extending stackpipe within the zone and introducing large bubbles into the stackpipe near the base thereof to create an upward flow of the water through the stackpipe and flowing water out of the zone having a lower ozone content than the ozonized water at a second position of the zone spaced apart from the first position.       Apparatus for carrying out the new method is described.
Patent CA-2028549-C (CA)
Title: Process for the production of chlorine dioxide
Inventor: ENGSTROEM JOERGEN
IPC: C01B11/02
Filed: 1990-10-25
Granted: 1998-10-27
Abstract: A process  for the  production of chlorine dioxide by reacting in a reaction  vessel  an  alkali  metal chlorate, mineral acid  and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium  which is maintained at  a temperature  of from  about 50 °C to about 100 °C and at an acidity within a range of from about  2 to about 5 N. The reaction medium is subjected to subatmospheric pressure sufficient for evaporating water, a mixture of chlorine dioxide,  oxygen and  water vapour being withdrawn from an evaporation zone in the reaction vessel, and alkali metal sulfate  being precipitated in a crystallization zone in the reaction  vessel.  As  the  reducing  agent hydrogen peroxide is used.
Patent CA-2029361-C (CA)
Title: Preparation process of indoles
Inventor: HONDA TADATOSHI
IPC: B01J23/89
Filed: 1990-11-06
Granted: 1997-01-21
Abstract: A process is provided for the preparation of an indole from aniline or a derivative thereof and a polyhydric alcohol.  The reaction is carried out in the presence of a catalyst composed of a carrier having a specific surface area of at least 10 m/g and silver supported on the carrier.  The catalyst also contains as an additional component a specific amount of at least one element selected from Co, Fe and Ni. Deterioration in catalytic performance of the catalyst during the reaction and its regeneration are therefore minimized.
Patent CA-2038648-C (CA)
Inventor: GONDOUIN MICHEL
IPC: E21B43/40
Filed: 1991-03-19
Granted: 2002-09-17
Abstract: The degradation of steam quality due to heat losses prior to its injection into a heavy oil reservoir is reduced by a process utilizing the heat contained in a stream of reservoir fluids produced from the same reservoir,following a cycle of steam injection.These hot reservoir fluids are produced from one of several horizontal drainholes connected to the same vertical cased well, while at least one of the other drainholes is under cyclic steam injection. Steam from a boiler located in close proximity of the well head is conveyed downhole through an insulated tubing to a Downhole halve Section used to direct the flow of steam from the steam tubing to each of the drainholes in succession and to direct the flow of reservoir fluids from the previously steam-injected drainholes to the production tubing. Both tubings are installed within the casing of the vertical well and each of them is dedicated to carrying only one type of fluid:steam or reservoir fluids.Only the drainhole liners see an alternance of steam and of reservoir fluids.The heat contained in fluids supplied from the surface for lifting the produced fluids to the surface is also used to reduce heat losses from the steam tubing to the cold rocks surrounding the well. The heat loss reduction is achieved by reducing the temperature gradient across the insulation layer of the steam tubing. Detrimental heat losses through the well casing can also be reduced by using an insulated production tubing, concentric with the central insulated steam tubing.
Patent CA-2038848-C (CA)
Title: Hydantoin derivatives
Inventor: KONIG WOLFGANG
IPC: A61K31/415
Filed: 1991-03-22
Granted: 2002-01-22
Abstract: Novel hydantoin derivatives of the formula I (see formula I) in which n is 3 or 4, R1 is alkyl or a radical of the formula (see formula II) with R' and R" being hydrogen or alkyl, and R2 is hydrogen, -NH-CO-NH2 and optionally substituted alkyl, and a process for the preparation thereof and the use thereof for inhibiting platelet aggregation, are described.
Patent CA-2042945-C (CA)
Title: Protein purification method
Inventor: COAN MICHAEL H
IPC: C07K16/00
Filed: 1991-05-21
Granted: 2004-05-18
Abstract: Method of purifying a protein from a solution of substances comprising the steps of passing the solution through an ion exchange material at a pH which facilitates binding of the protein of interest, washing the bound protein at a different pH at which the bound protein does not elute but at which the free protein could not bind to the ion exchange material, and then eluting the protein at a pH which facilitates elution.      Method is especially useful in purification of antibodies such as antibodies to tumor necrosis factor.
Patent CA-2063075-C (CA)
Title: Autogenous roasting of iron ore
Inventor: CAVANAGH PATRICK E
IPC: C01G49/06
Filed: 1992-03-13
Granted: 1999-03-30
Abstract: Iron ore concentrate is converted to magnetic gamma hematite in an autogenous roasting operation which is self-sustaining.  The iron ore concentrate is preheated and  contained  magnetite  is  oxidized  to  hematite. Hematite is reduced to magnetite using carbon monoxide. After  cooling,  the  magnetite  is  oxidatively exothermically converted  to magnetic gamma hematite. The thermal energy resulting from the latter step is recycled to the preheating and reduction steps while thermal energy resulting from the cooling step also is recycled to those steps.   The magnetic gamma hematite may be subjected to magnetic separation to produce a very  low silica  high purity iron oxide concentrate, which may be blended with high silica concentrate to provide a pellet feed for making blast furnace feed pellets.
Patent CA-2066712-C (CA)
Title: Global communication system, receiver and method for operating the same
Inventor: DAVIS WALTER LEE
IPC: H04B7/185
Filed: 1990-10-01
Granted: 1996-09-24
Abstract: A global communica-tions system is described hav-ing terrestrial transmitters (1108) for transmitting coded message signals in each of a plurality of geographic areas (1102, 1104, 1106). The global communication system further includes at least one satellite transmitter (1114) for transmit-ting the coded messages signals in each of a plurality of global geographic areas. The coded message signals transmissions include channel identification codewords identifying the ter-restrial channels and the satel-lite channel. The terrestrial channel is selected for opera-tion when the channel identifi-cation codeword received matches a first predetermined channel identification code-word. The satellite channel is selected for operation when the channel identification codeword does not match a second predeter-mined channel identification codeword. The terrestrial channel is periodically reselected when the channel identification code-word received on the satellite channel matches the second predetermined channel identification codeword.
Patent CA-2067151-C (CA)
Title: Aica riboside analogs
Inventor: BULLOUGH DAVID A
IPC: A61K31/7056
Filed: 1991-08-09
Granted: 2004-02-03
Abstract: Analogs of 5-amino-1-beta-D-ribofuranosylimidazole-4-carboxamide (AICA riboside) are provided which are useful in increasing extracellular levels of adenosine.      The analogs have the formula of: (see formula I) or a pharmaceutically acceptable salt thereof wherein X is -O-or -CH2-; R1 is hydrogen, amino, hydrocarbylamino, acylamino or dihydrocarbylaminoalkyleneimino; R2 is hydrogen, cyano, hydrocarbylimidate, carboxamidoxime, hydrocarbyloxyamidine, carboxamide, or carboxylic acid or an amide; a carboxyester having the formula -C(=O)OR', wherein R' is (C1-C6) alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl, (C6-C14)aryl, (C1-C4)alkyl-(C6-C10)aryl, or (C6-C14)cycloalkyl, the (C6-C19)cycloalkyl being optionally substituted by one or more (C6-C14)aryl groups; a thioester having the formula -C(=O)SR', wherein R' is as defined above; or a salt thereof, or R2 is a group of the formula: (see formula II) wherein alk is alkylene of 2 to 8 carbon atoms; R3 is hydrogen, (C1-C6) alkyl, (C2-C6) alkenyl, (C2-C6) alkynyl, (C6-C14) aryl, (C1-C4) alkyl- (C6-C10) aryl, or (C6-C14) cycloalkyl, the (C6-C14)cycloalkyl being optionally substituted by one or more (C6-C14)aryl groups, amino, hydrocarbylamino, halogen, hydroxy, hydrocarbyloxy, sulfhydryl, or hydrocarbylthio; R4 and R5 are independently hydrogen, (C1-C6) alkyl, (C2-C6) alkenyl, (C2-C6) alkynyl, (C6-C14) aryl, (C1-C4) alkyl- (C6-C10)aryl, or (C6-C14) cycloalkyl, the (C6-C14) cycloalkyl being optionally substituted by one or more (C6-C14)aryl groups, acyl having the formula -C(=O)R' wherein R' is as defined above, or hydrocarbyloxycarbonyl; R6 is hydrogen, (C1-C6)alkyl, (C2-C6) alkenyl, (C2-C6) alkynyl, (C6-C14) aryl, (C1-C4) alkyl-(C6-C10) aryl, or (C6-C14) cycloalkyl, the (C6-C14) cycloalkyl being optionally substituted by one or more (C6-C14)aryl groups, halogen, hydroxy, hydrocarbyloxy, sulfhydryl, hydrocarbylthio, sulfamyloxy, amino, hydrocarbylamino, azido, acyloxy or hydrocarbyloxycarboxy or a phosphate ester group or a salt thereof; provided that when R1 is amino, R2 is unsubstituted carboxamide, R3 is hydrogen; R4 and R5 are hydrogen, acyl having the formula -C(=O)R' wherein R' is as defined above, or hydrocarbyloxycarbonyl; then R6 is not hydroxy, acyloxy or hydrocarbyloxycarboxy.
Patent CA-2074019-C (CA)
Inventor: PIPE GREGORY
IPC: E05B65/463
Filed: 1992-07-16
Granted: 1997-09-30
Abstract: A file storage apparatus (10) has a string or stack of drawer elements (14) vertically disposed along a side. A mechanical blocking shaft (28) is disposed on one side of the drawer (14) to allow only one drawer to be opened while blocking the remaining drawers preventing opening. A locking bar (62) is disposed on a second side of the drawers (14) for locking all of the drawers closed in response to an electrical access circuit (72) and for unlocking all of the storage units (14). An actuator member (72) interacts between the access circuit (72) and the locking bar (62) for moving the locking bar (62) between an unlocked and locked position.
Patent CA-2078610-C (CA)
Title: Powder coating material and a precoat steel plate
Inventor: SAGAWA CHIAKI
IPC: C08G18/08
Filed: 1992-11-13
Granted: 1995-12-26
Abstract: A powder coating composition comprises 100 weight parts of the total of a polyester resin having a hydroxyl value in the range from 20 to 100 KOH mg/g and a blocked polyisocyanate compound, 0.01 to 3 weight parts of an organotin compound and 0.01 to 10 weight parts of a carboxylic acid compound having an acid value of 1000 KOH mg/g or less which can form a complex compound by reaction with the organotin compound. The amount of the polyester resin is in the range from 95 to 50 weight 96 and the amount of the blocked polyisocyanate compound is in the range from 5 to 50 weight % respectively based on the total of the polyester resin and the blocked polyisocyanate compound. A precoat steel plate is prepared by coating the powder coating composition described above on a steel plate by a electrostatic powder coating method to form a coating layer having a thickness in the range from 20 to 120 µm and curing the coating composition by baking at a temperature in the range from 190 to 300°C for a time in the range from 20 seconds to 10 minutes. The powder coating composition can be cured without formation of blisters and pin holes under a desired condition by controlling the rate of the curing reaction.
Patent CA-2078691-C (CA)
Inventor: BUESING ROBERT J
IPC: C01G5/00
Filed: 1992-02-03
Granted: 1997-10-14
Abstract: Une solution d'alimentation en nitrate d'argent, renfermant du nitrite et de l'acide nitrique, est traitée pour l'obtention d'une solution de nitrate d'argent à faible teneur en nitrite. Dans le procédé, on règle la température de la solution d'alimentation entre environ 80 °C et approximativement le point d'ébullition de la solution d'alimentation. La solution d'alimentation est introduite dans un contenant (10) comportant une zone de purification (12), avec un élément de mise en contact (14) au-dessus duquel elle est dispersée. La solution d'alimentation s'écoule à contre-courant et entre en contact dans la zone de purification (14) avec un gaz mobile pour éliminer le nitrite de la solution et donner une solution de nitrate d'argent à faible teneur en nitrite.
Patent CA-2081983-C (CA)
Title: Gel composition in gels for submerged gel electrophoresis
Inventor: KOZULIC BRANKO
IPC: G01N27/447
Filed: 1992-02-21
Granted: 2003-07-15
Abstract: The method of electrophoresis uses for separation of charged species their different mobilities in an electric field. The pro-cess is usually carried out by forcing the molecules to migrate through an aqueous gel. The gels are run in essentially two types of electrophoretic units: vertical and horizontal ones. It was found that in the standard submerged electrophoresis units the resolu-tion of DNA in the poly(NAT) gels was never so good as in the vertical system.  It was observed that by looking at the gel from above under an angle declined from the vertical, the viewed DNA bands in the gel were much sharper than they were pictured on the photograph taken by a camera positioned more or less vertically above to gel. On basis of this observation it was assumed that the diffuseness of bands seen on the photograph did not originate from a real diffuseness of bands in the gel, but rather from the vertical position of the camera and bending of the bands against the vertical axis. If the bands in the gel could be made essential-ly vertical, then the resolution taken by the usually positioned camera would be qualitatively better and besides that independent of the sample volume. It is the main goal to prevent such bending of bands in gels during electrophoresis.
Patent CA-2084323-C (CA)
Inventor: TAGUCHI TETSU
IPC: G10L19/113
Filed: 1992-12-02
Granted: 1996-12-03
Abstract: In a speech signal encoding system comprising an analyzer and a synthesizer, the analyzer is supplied with an input analog signal and selects an initial sequence of digital signals within an analysis frame.  The analyzer extracts correlations from the analysis frame, which is divided into a plurality of time intervals each of which is subdivided into a plurality of phases.  The correlations are calculated between autocorrelations of impulse responses within the analysis frame and cross-correlations between the digital signals and the impulse responses, for detecting by a maximum similarity series searching circuit a sequence of excitation pulses which has a maximum similarity between the autocorrelation coefficients and the cross-correlations.  The excitation pulses appear at an equidistant time interval and an identical amplitude, and have a selected one of the phases and variable polarities.  The excitation pulses are sent to the synthesizer together with a phase signal representative of the selected phase, an amplitude signal determined by the analyzer, and a sequence of LPC parameters calculated in relation to the analysis frame.
Patent CA-2086638-C (CA)
Inventor: NAKADA YOKO
IPC: B60C13/02
Filed: 1993-01-04
Granted: 2002-07-16
Abstract: A pneumatic tire is provided herein having a tread portion with a pair of edges, a pair of axially-spaced bead portions each with a bead core, a pair of sidewall portions extending from the edges of the tread portion to the bead portions and a carcass extending between the bead portions. A tread rubber layer is disposed radially outside the carcass to define the tread portion. A sidewall rubber layer is disposed axially outside the carcass, in each of the sidewall portions, the sidewall rubber layer being of softer material than the tread rubber layer. A  protective rubber layer is disposed on the outer surface of each of the sidewall rubber layers defining a portion of the outer surface of each sidewall portion. The protective rubber layer is made of a fibre-reinforced rubber composition containing 10 to parts by weight of short fibrous reinforcements, 20 to 70 parts by weight of carbon black, and 100 parts by weight of rubber base consisting of 20 to 100 parts by weight of natural rubber or isoprene rubber and 80 to 0 parts by weight of butadiene rubber. The short fibrous reinforcements are oriented in the tire circumferential direction. Furthermore, the protective rubber layer has a radial outer edge that ends near the edge of the tread rubber layer, and a radial inner edge which is located radially-inwardly of the maximum carcass width point of the tire, and within the sidewall portion.
Patent CA-2089329-C (CA)
Title: Heating apparatus
Inventor: OHTA NOBUAKI
IPC: H05B6/68
Filed: 1993-02-11
Granted: 1998-12-29
Abstract: A heating apparatus such as microwave ovens includes a menu display for displaying a plurality of cooking menu groups each including a plurality of cooking menus, a menu selecting dial turned in one of two directions so that one of the cooking menu groups displayed on the menu display is selected, the menu selecting dial being turned in the other direction so that one cooking menu is selected from the selected cooking menu group, a heater for heating food to be cooked, and a heating control device for controlling the heater so that heating is automatically executed in accordance with the cooking menu selected by a turn of the menu selecting dial.
Patent CA-2089651-C (CA)
Title: Plant-protecting agents containing isoxazolines or isothiazolines, and novel isoxazolines and isothiazolines
Inventor: LOHER HEINZ-JOSEF
IPC: C07D261/04
Filed: 1991-08-08
Granted: 2003-10-14
Abstract: Plant-protecting agents containing isoxazolines or isothiazolines, and novel isoxazolines and isothiazolines Isoxazolines or isothiazolines of the formula (I) or salts thereof (see Formula I) in which (Z)n, X and R are as defined in claim 1, are suitable as safeners against phytotoxic side effects of herbicides, preferably in cereal crops.
Patent CA-2090351-C (CA)
Title: Methods and apparatus for removing debris from a well bore
Inventor: WILLIAMS ROBERT M
IPC: E21B7/00
Filed: 1993-02-25
Granted: 2003-04-22
Abstract: A well clean-out tool includes a cylindrical member in which a helical conveyor screw is arranged for vertical sliding movement relative to the cylindrical member. The tool is lowered into a well bore until the shoe contacts debris within the bore. At that time, the screw is caused to descend relative to the cylindrical member, whereupon a lower end of the screw projects slightly below a lower end of the cylindrical member, and a rotary coupling between the screw and the cylindrical member is released, and a spring is caused to store energy. Thereafter, the screw is rotated relative to the cylindrical member, while the spring presses the cylindrical member against the debris in order to resist rotation of the cylindrical member. The screw projects only slightly downwardly beyond the lower end of the cylindrical member, e.g., less than one inch, in order to convey debris upwardly within the cylindrical member.      At the end of a clean-out operation, the screw is raised back into the cylindrical member whereupon the rotary coupling is re-engaged in order to produce rotation of the cylindrical member as the tool is removed from the well bore.
Patent CA-2091288-C (CA)
Title: Membranous-vibration sound absorbing materials
Inventor: MORIMOTO TORU
IPC: B32B3/24
Filed: 1993-03-09
Granted: 1995-11-28
Abstract: The present invention provides a membranous-vibration sound absorbing material which can achieve not only good sound absorbing characteristics, workability and strength but also transparency.  The membranous-vibration sound absorbing material can also achieve dust-proof and dust-free properties when necessary and can be suitably used for application in clean rooms and the like.    The membranous-vibration sound absorbing material comprises a resin thin film held between sheets having a large number of openings.
Patent CA-2093400-C (CA)
Title: Process and device for opening folded print products
Inventor: REIST WALTER
IPC: B65H47/00
Filed: 1993-04-05
Granted: 1999-01-19
Abstract: Printed products are transported in the direction of conveyance suspended, held by their fold, from transporting clamps of a conveying device. The end area of the printed products rests on a supporting mechanism and the uppermost product part protrudes with its marginal section over the bottommost product part. To the two product parts there is in each case assigned a gripper of the opening device.  The grippers are disposed on a revolutionally driven drawing member.  The clamping tongue of the first gripper grips underneath the marginal section and, upon running up against an opening crank, lifts the product part from the bottommost product part. The second gripper grasps the lifted-off product part in the marginal section and, when the clamping tongue is lowered into the closed position, the latter clamps the product part between itself and the clamping jaw of the first gripper, by the end edge.  The first gripper revolves at a greater velocity than the second gripper. Thus, the two product parts are lifted apart in the direction of conveyance.
Patent CA-2100870-C (CA)
Inventor: STEWEN WILHELM
IPC: C10B39/02
Filed: 1991-12-27
Granted: 2002-03-26
Abstract: A coke feed device for the cooling shaft (41) of a coke dry cooling installa-tion which consists of a stationary hopper with an extraction line (9), a liftable an lowerable lower hopper section (18) and a movable, liftable and lowerable cooling shaft closure (8) to which is allocated a manipulating device (14) with a drive. The stationary hopper (1) or the liftable and lowerable lower hopper section (18) is fit-ted with a distribution bell (5), a sealing ring (111) is secured to the liftable and lowerable lower hopper section (18) or a liftable and lowerable sealing ring (11) is allocated to the stationary hopper (1) and a sealing ring (55, 31) is secured to the movable lif-table and lowerable cooling shaft closure (8, 800) and a drive (16, 19, 190;  71) is allocated to the distributor bell (5) and/or the liftable and lowerable lower hopper section (18) and/or the liftable and lowerable sealing ring (11, 111).