baber/WOPTO huggingface dataset:
Patent CA-2005845-C (CA)
Title: Method for preparing a-(4-isobutylphenyl) propionic acid or its precursor
Inventor: SHIMIZU ISOO
IPC: C07C51/255
Filed: 1989-12-18
Granted: 2001-01-09
Abstract: A method for preparing .alpha.-(4-isobutylphenyl) propionic acid or its precursor is here disclosed which comprises a step (I) of dehydrogenating p-isobutylethyl-benzene in a gaseous phase in the presence of a dehydrogenating metal catalyst to form p-isobutylstyrene and at least one unsaturated hydrocarbon compound selected from the group consisting of 4-(2'-methyl-1'-propenyl)ethylbenzene, 4-(2'-methyl-1'-propenyl) vinylbenzene, 4-(2'-methyl-2'-propenyl)ethylbenzene, and 4-(2'-methyl-2'-propenyl)vinylbenzene; a step (II) of reacting p-isobutyl-styrene obtained in the step (I) with carbon monoxide and hydrogen or with carbon monoxide and water or a lower alcohol in the presence of a transition metal complex carbonylating catalyst to form .alpha.-(4-isobutylphenyl)propionic acid or its precursor; and a step (III) of hydrogenating at least one unsaturated hydrocarbon compound selected from the group A obtained in the dehydrogenation step (I) to form p-isobutylethylbenzene, and recycling the thus formed p-isobutylethylbenzene through the step (I) as the raw material of the step (I). The .alpha.-(4-isobutylphenyl) propionic acid so prepared is useful as a medicine (an analgesic).
Patent CA-2013087-C (CA)
Title: Carbonate derivatives of eseroline, a process for their preparation and their use as medicaments
Inventor: GLAMKOWSKI EDWARD J
IPC: C07D487/04
Filed: 1990-03-26
Granted: 1999-12-28
Abstract: This invention relates to 1, 2, 3, 3a, 8, 8a-hexahydro-1, 3a, 8-trimethylpyrrolo [2, 3-b] indol-5-o1 carbonate esters of the fomula (see formula I) cycloalkyl, aryl, aralkyl or (see formula II) hydrogen or halogen; the pharmaceutically acceptable acid addition salts thereof and where applicable to the geometric and optical isomers and racemic mixtures thereof. The compounds of this invention display utility as analgesic agents.
Patent CA-2022801-C (CA)
Title: Switching network and switching-network module for an atm system
Inventor: SCHRODI KARL
IPC: H04N21/434
Filed: 1990-08-07
Granted: 1993-07-20
Abstract: ABSTRACT         The disclosed asynchronous transfer mode (ATM) switching network evenly scatters individual cells of an ATM data stream in the first half of the network and routes them to their intended destination in the second half of the network.  The network is constructed from interchangeable switching modules each preferably containing only two stages of switching elements, with each switching element having a common memory, thus reducing the component count by one third compared to Clos' 3-stage non-blocking modules.  Each individual module provides a switched path from any selected one of its module inputs to any selected one of its module outputs, with the common memory acting as a buffer until a path becomes available to the desired module output.          Since the additional stages between the module's input stage and the module's output stage typically used to provide a non-blocking module are dispensed with, not only the component count, but also the transmission delay through the switching network may be reduced.
Patent CA-2023405-C (CA)
Title: Process for purifying n-phosphonomethylglycine
Inventor: SMITH LOWELL R
IPC: C07F9/40
Filed: 1990-08-16
Granted: 1995-07-04
Abstract: N-Phosphonomethylglycine can be purified and concentrated from aqueous solutions containing N-phos-phonomethylglycine and impurities, such as N-formyl-N-phosphonomethylglycine, phosphorous acid, and the like, by passing the aqueous solution through an ion exchange column containing a weakly basic ion exchange resin to remove such impurities.
Patent CA-2027995-C (CA)
Title: Sulfobenzoyl end-capped ester in oligomers useful as soil release agents in granular detergent compositions
Inventor: MORRALL STEPHEN WILLIAM
IPC: C08G63/672
Filed: 1990-10-18
Granted: 1996-05-14
Abstract: Anionic,  sulfobenzoyl  end-capped  esters  useful  as  soil release  agents  in  granular detergent  compositions.   The  tere-phthalate esters contain oxyethyleneoxy and oxy-1,2-propyleneoxy units, and are substantially amorphous in form.
Patent CA-2030422-C (CA)
Title: Pressure and vacuum formable foam foil for lining the interior spaces of motor vehicles
Inventor: WAGNER WERNER
IPC: B32B5/18
Filed: 1990-11-21
Granted: 1995-02-14
Abstract: A vacuum and pressure formable foam foil consisting of a foam layer with a decorative layer that is applied to this, and optionally with a primer layer as well as additional layers is used for lining the interior spaces of motor vehicles is described.  This is characterized in that the foam layer a) is of a density of approximately 25 to 200 kg/m3; b) has a stretch at rupture according to DIN 53571 of at least approximately 50%; and c) has a compression stress value according to DIN 53577 of at least 50 kPa (at 50% deformation).  It is preferred that the foam layer consist of a polyolefin.  This vacuum and pressure formable foam foil requires no PVC materials for its foam layer, which eliminates disposal problems.  Because of its low weight, there is very little spoilage during secondary processing.  It is distinguished by good mechanical properties and satisfies the strictest delivery conditions imposed by the automobile industry.
Patent CA-2032451-C (CA)
Title: Trailer hitch shock absorber
Inventor: THORNE REXFORD M
IPC: B60D1/52
Filed: 1990-12-17
Granted: 1994-06-21
Abstract: ABSTRACT OF THE DISCLOSURE    A trailer hitch adapter is provided for connection either to a trailer hitch ball or to a trailer hitch tongue.  The adapter includes a tubular member that defines a housing and a connecting member carried within the housing between a pair of resilient elements to absorb axial shocks and rotational loads imparted by one of the towed vehicle or the towing vehicle to the other vehicle.   The adapter is removably connected with a portion of the trailer hitch by means of a pair of retaining pins, to permit its removal and transfer from  one  vehicle  to  another,  and  also  to  prevent  an unauthorized connection of a towed vehicle to a trailer.
Patent CA-2037765-C (CA)
Title: Process for producing oxide superconductive material by firing and apparatus therefor
Inventor: SHIMIZU HIDEKI
IPC: H01L39/24
Filed: 1991-03-07
Granted: 1995-02-07
Abstract: ABSTRACT     In a process or an apparatus for producing an oxide superconductive material by firing, a gas passage is formed in a firing furnace and a material to be fired, consisting of  a  ceramic  superconductive  powder  and/or  a  powder expressing superconductivity when heated, is placed in the gas passage.  A gas is passed through the gas passage in one direction to contact with the material.  A both ends-opened cylindrical inorganic material is provided in a firing zone of  a  muffle  of  a  bell-shaped  furnace,  and  a  bottomed cylindrical  material   of   a   substrate  and  an  oxide superconductive layer is provided inside or outside the both ends-opened cylindrical inorganic material.
Patent CA-2040045-C (CA)
Title: Denitration catalyst and method
Inventor: IZUMI JUN
IPC: B01D53/86
Filed: 1991-04-09
Granted: 1997-06-24
Abstract: A catalyst for denitration of exhaust gas containing NOx which comprises a Cu (II) exchanged Y zeolite which is produced by exchanging 60 to 200% of exchangeable Na ions in a Na-Y zeolite with Cu(II) ions.  Also, a method of using the catalyst.  It becomes possible to carry out denitration at higher efficiency than a conventional vanadium-titania catalyst.
Patent CA-2051249-C (CA)
Inventor: KITAGAWA HIROSHI
IPC: F02D29/02
Filed: 1991-09-12
Granted: 1995-11-21
Abstract: In reducing a driven wheel output torque by a driven wheel output torque reducing means when slipping of a driven wheel becomes excessive in a vehicle including a torque converter between an internal combustion engine and the driven wheel, an output torque from the internal combustion engine calculated by an internal combustion engine output torque calculating means is first converted into a driven wheel applied torque in consideration of an amplification of the torque in the torque converter by a driven wheel applied torque calculating means. Then, a surplus torque consumed for the slipping of the driven wheel is calculated by a surplus torque calculating means, and a transmittable torque which can be actually transmitted to a road surface is calculated from the driven wheel applied torque and the surplus torque by a transmittable torque calculating means. On the basis of the transmittable torque, a decrement in driven wheel torque is determined by a control quantity determining means . An over-control in the control of slipping of the driven wheel is prevented by taking an amplification of the torque by the torque converter into consideration in this manner.
Patent CA-2054752-C (CA)
Title: Pharmaceutical composition comprising loratadine, ibuprofen and pseudoephedrine
Inventor: CHO WING-KEE P
IPC: A61P25/04
Filed: 1990-05-02
Granted: 1996-12-31
Abstract: Pharmaceutical compositions for use in the treatment of cough/cold symptoms comprising loratidine, ibuprofen and pseu-doephedrine are disclosed.
Patent CA-2057773-C (CA)
Inventor: ZURBRUEGG ANDREAS
IPC: A61F2/46
Filed: 1991-12-17
Granted: 1999-08-10
Abstract: A drill chuck is provided for surgical drilling machines in which the entire chuck is made of material permeable to X-radiation.
Patent CA-2065276-C (CA)
Inventor: TIPPMANN VINCENT P
IPC: A23L5/10
Filed: 1991-06-11
Granted: 1999-08-24
Abstract: Appareil servant à chauffer ou à refroidir des articles alimentaires comprenant notamment une chambre (16) qui contient une pluralité de moyens de support (30) espacés verticalement pour les articles alimentaires, chaque moyen de support (30) possédant une pluralité d'éléments tubulaires (38) espacés et connectés à un premier et à un deuxème plénum (40, 42). Des dispositifs de collecteur d'alimentation et de retour (46, 48) sont connectés respectivement au premier et au deuxième plénum (40, 42) de chaque moyen de support (30) et, par un conduit (50, 66, 74), à un réservoir de fluide (60) et à une pompe (70) pour faire circuler un fluide dans un dispositif de transfert de fluide en boucle fermée à travers chaque moyen de support (30). L'appareil comporte en outre des dispositifs (78) servant à chauffer et à refroidir le fluide, ainsi qu'un dispositif de commande (98) pour la mise en oeuvre des dispositifs de chauffage et de refroidissement (78) soit séparément, soit en séquence prédéterminée, et à une température présélectionnée.
Patent CA-2065551-C (CA)
Inventor: SATO KEIICHI
IPC: F23G5/30
Filed: 1992-04-07
Granted: 2003-06-03
Abstract: An incinerator designed so that the reaction of unburnt gas with oxygen progresses rapidly to thereby minimize the amount of unburnt gas generated therefrom.      An intermediate portion of a combustion chamber is contracted in the cross-sectional direction with respect to the direction of flow of gas to thereby provide a throttling passage 14 over a predetermined distance.      A part of the combustion chamber which is below the throttling passage 14 and a part of the combustion chamber which is above the passage 14 are enlarged in the cross-sectional direction to define a lower combustion chamber 13 and an upper combustion chamber 15, respectively. A first barrier 16 is disposed in the vicinity of the inlet of the throttling passage 14 across the lower combustion chamber 13 and a second barrier 17 is disposed in the vicinity of the outlet of the throttling passage 14 across the upper combustion chamber 15.
Patent CA-2071849-C (CA)
Title: Method of supporting fractures in geological formations and hydraulic fluid composition for same
Inventor: WESTLAND JOHN A
IPC: C09K8/62
Filed: 1990-12-11
Granted: 1999-09-14
Abstract: The addition of relatively small quantities of a bacterial cellulose to hydraulic fracturing fluids improves their rheological properties for hydraulic fracturing of geological formations. Proppant suspension is markedly improved and friction loss through well casings is significantly reduced, resulting in lower pumping energy requirements. Computer models also indicate that formation fractures will be propagated for greater distances as will the propped portion of the fracture. Normally only about 0.60-1.8 g of bacterial cellulose per liter of fracturing fluid is needed.  A preferred bacterial cellulose is one made in agitated fermentors using mutation resistant strains of a bacterium from the genus Acetobacter,
Patent CA-2081227-C (CA)
Inventor: MOUNT ELDRIDGE MILFORD III
IPC: C08J7/043
Filed: 1992-10-23
Granted: 2003-02-18
Abstract: A metallized oriented film combination having a propylene polymer substrate with a high density polyethylene skin layer on at least one side thereof and a thin metal layer deposited on the surface of the high density polyethylene.
Patent CA-2082077-C (CA)
Inventor: BARTOW NEIL GEORGE
IPC: H04L25/02
Filed: 1992-11-04
Granted: 1996-10-01
Abstract: A  system and method for  asynchronously transmitting data blocks, in parallel, across multiple fibers in a serial manner.   Frame groups are provided as a mechanism to transmit associated data serially on each fiber and tie the data being transmitted together.   The frame groups do not have sequence numbers,  therefore,  the receiver determines which frames are part of a frame group by the arrival times of the individual frames.  In one embodiment, the transceivers for each  member  of  the  parallel  bus  asynchronously  achieve synchronism at each end of the fiber.  Thus the need for a common clock is eliminated.  The receivers on each side of the bus determine the relative skew for each conductor by performing  skew  measurements  on  a  calibration  message generated by the transmitters on the other side of the bus. When the skew on all conductors, viewed from both sides of the bus, has been determined, the skew values are exchanged across the bus, thus enabling the transmitters to set proper frame spacing.
Patent CA-2084284-C (CA)
Title: Divider synchronization circuit
Inventor: COSAND ALBERT E
IPC: H03L7/189
Filed: 1992-12-01
Granted: 1998-12-29
Abstract: A divider synchronization circuit (11) that provides faster settling to a new in a phase-locked loop frequency synthesizer (10) that uses a programmable divider (16) and a phase detector (17). The circuit (11) is adapted to stop the divider (16) while its program is being changed, and then restart the divider (16) on command. The startup time of the divider (16) is automatically adjusted such that the divider output is in phase with a reference input to a phase detector (17). The outputs of the phase detector (17) are also blanked during the time period that the divider (16) is stopped. The circuit (11) reduces the time required for the phase locked-loop frequency synthesizer (10) to settle to its new frequency and phase when frequency is changed. The timing of the divider startup eliminates the large phase transient that may occur when the divider startup timing is random, thus shortening the time that must be allowed for the synthesizer output to settle to its final phase. This circuit (11) is of particular value in a fast settling synthesizer design in which a VCO is pretuned to a close approximation to the new output frequency and then the loop is closed to drive the frequency to its exact value. The circuit (11) is well adapted for use in spread spectrum and frequency-agile radar systems, or spread spectrum communications systems.
Patent CA-2085462-C (CA)
Inventor: WATSON-SMITH DIANNA
IPC: A61K47/06
Filed: 1992-12-15
Granted: 1998-08-11
Abstract: An  ointment  consisting  of  the  following  described ingredients  expressed as  a percentage  of volume.     The ingredients being:  between 28% and 61% corn starch; between 5% and 30% an antifungal agent compatible with human skin; and between 30% and 60% petroleum jelly.
Patent CA-2088501-C (CA)
Title: Method and apparatus for finding horizons in 3d seismic data
Inventor: HILDEBRAND HAROLD A
IPC: G01V1/32
Filed: 1992-07-06
Granted: 1999-10-12
Abstract: A method and apparatus of rapidly generating horizon maps from a three dimensional volume of seismic traces is disclosed. During batch processing of the digital data representing trace wavelets, "1"'s or "0"'s are determined for each seismic trace of the volume. A bit volume is produced of which a "1" at a depth of a trace indicates that a horizon exists at that depth and at other depths of "1"'s of adjacent traces which are within a predetermined depth. In a real time mode, an explorationist selects a seed point thereby identifying a "1" on a particular trace at a particular depth. An automatic scanning procedure finds all other "1"'s at depths of adjacent traces. Each found "1" of adjacent traces is redesignated a seed point and the process is continued until no more "1"'s can be found. A horizon map is created from the depths of each found "1". An alternative method and apparatus is disclosed by which such bit volume is replaced with a compressed trace volume where each bit of the bit volume is replaced with a numerical value corresponding to the precise depth location of the attribute extremum represented by the bit. Such depth values are stored consecutively to form compressed traces. Interpolation of wavelets to find maximum or minimum attributes of such wavelets identifies depths above or below a bit of the bit volume which allows the production of an interpolated compressed trace volume.
Patent CA-2088753-C (CA)
Title: Point-to-multipoint communication network capable of retransmitting a multicast signal
Inventor: OSAWA TOMOKI
IPC: H04N7/24
Filed: 1993-02-03
Granted: 1999-02-16
Abstract: In a point-to-multipoint communication network wherein communication channels are established between a transmitting station and a plurality of receiving stations for transmission of data as a multicast signal, a reception confirming arrangement confirms reception of the multicast signal by the receiving stations to locate failing stations that fail to receive at least portions of the multicast signal.  A retransmitting arrangement establishes relevant ones of the communication channels between the transmitting station and the failing stations for transmission of the portions to the failing stations,  For reception confirmation, the data may be identified by data identifiers, as by a serial number.          Alternatively, each receiving station may send back for comparison at the transmitting station a predetermined portion of datum which may be each of the data or a latest datum received latest at the receiving station under consideration.  Preferably, the portions are retransmitted to the failing stations concurrently and one after another when the failing stations are and are not greater in number than a predetermined threshold value.
Patent CA-2097213-C (CA)
Title: Prefabricated balcony
Inventor: PARISIEN HARVEY EDGAR
IPC: E04B1/00
Filed: 1993-05-28
Granted: 2004-10-19
Abstract: A structure assembled of aluminum alloy extrusion and sheathing such as composite particle board for use as porches, balconies, or the like. The parts include posts, a frame having corner fasteners, and channel type beams supported by the frame and secured to the frame by fasteners in a manner requiring a minimum of on-site drilling of holes in the aluminum alloy parts.
Patent CA-2105326-C (CA)
Inventor: SHREWSBURG JAMES E
IPC: B60R21/215
Filed: 1993-09-01
Granted: 1999-08-17
Abstract: Une porte à coussin gonflable est divulguée, comprenant une couche de surface externe, une couche de mousse de polyuréthane souple et un soutien structurel. La mousse de polyuréthane utilisée dans la porte a été conçue pour résister aux forces de traction et de déchirement élevées générées par le déploiement du coussin gonflable. La force de cohésion de la mousse agit comme un agent de liaison entre la pellicule de revêtement ou la pellicule et le soutien structurel ou substrat, aidant à s'assurer que la porte reste intacte.
Patent CA-2107246-C (CA)
Inventor: KENKNIGHT BRUCE H
IPC: A61N1/39
Filed: 1993-09-29
Granted: 1998-08-25
Abstract: A cardioversion/defibrillation electrode comprising an insulative element which supports one or more planar conductive elements.  The conductive elements are spaced apart from each other by a "conductor-free" region, which serves as a spring loaded hinge about which the electrode may preferentially bend.  The electrode is thereby spring loaded to adopt a substantially planar orientation in a relaxed state but is capable of bending to a non planar orientation wherein the electrode is folded about the hinge to facilitate intrathoracic introduction.   After introduction, the spring loaded hinge causes the electrode to adopt its relaxed substantially planar orientation for attachment on or near the heart surface.  Due to the preferential bending in the "conductor-free" region, the electrode conductive elements are not permanently or substantially deform during implantation.
Patent CA-2107873-C (CA)
Title: A method of producing interiorly sterile, cup or beaker shaped containers
Inventor: ROSEN AKE
IPC: B29C48/00
Filed: 1993-10-06
Granted: 2004-12-14
Abstract: The disclosure relates to a method of producing interiorly sterile, cup or beaker shaped containers. A starting material for the containers is produced by mixing inorganic filler with a thermoformable polymer material in such a mixing ratio that the quantity of filler in the produced starting material is at least 40% of the total weight of the mixture. The starting material is extruded into a continuous web which is heated to a temperature suitable for thermoforming of the web, at least 190°C, and is fed into a forming machine of conventional type for thermoforming of the web under vacuum at the above-mentioned temperature for forming web-like continuous, interiorly sterile, cup or beaker shaped containers. The containers are finally separated from one another by incisions in the web regions between the opening contours of each respective container.
Patent CA-2111664-C (CA)
Inventor: DENMAN OWEN S
IPC: E01F15/00
Filed: 1993-12-16
Granted: 1997-11-18
Abstract: A transporter for a length of highway barriers includes a series of barrier transporting units, each having at least one pair of wheels positioned to straddle a length of highway barriers,  at least one engaging device configured to engage one of the barriers, and at least one lifting device coupled to the engaging device to lift the engaging device and the engaged barriers. Articulating  couplings  interconnect  axially adjacent transporting units to form a train configured to straddle the length of highway barriers such as the train can be moved  over  a  length  of  highway  barriers  to  be transported.  The transporter includes a leveling system that maintains each of the transporting units level, even when the wheels of the transporting units bear on slabs at different elevations.  The transporter also includes a steering system that allows all of the transporting units to be steered to cause the transporter to move laterally as a unit.