baber/WOPTO huggingface dataset:
Patent CA-2035727-A1 (CA)
Title: Gas detector
Inventor: KRCMA JAN
IPC: G01N33/00
Filed: 1991-02-05
Abstract: GAS DETECTOR Abstract of the Disclosure A battery-powered gas detector comprises a gas sensor coupled to a current source and a power supply. The power supply generates a relatively high voltage when the gas sensor is warming up and a relatively low voltage after the sensor has warmed up.  The gas sensor, which is responsive to the presence of a gas, is coupled to an amplifier having a variable sensitivity circuit. The amplifier is connected to a microprocessor that determines the concentration of the sensed gas and provides a visual indication of the concentration on a display.  The gas detector can sense the presence of a variety of different gases.  The gas concentration of the sensed gas is determined based upon the magnitudes of a gas sensing signal generated by the amplifier, a calibration signal generated during a calibration routine when the detector is in a controlled environment, and an error signal generated when the detector is in a no-gas environment.
Patent CA-2037648-A1 (CA)
Title: Iron runner
Inventor: VAN LAAR JACOBUS
IPC: F27D3/14
Filed: 1991-03-06
Abstract: A B S T R A C T            An iron runner for tapping molten  crude iron from a blast furnace  is proposed, comprising at  least a  wear lining which  forms a  boundary carrying the iron during operation and a permanent lining in which the wear lining is  contained, an  outer boundary  and at  least an  outer lining with a  high  coefficient of  thermal  conductivity  which  is provided between the outer boundary and the permanent lining,  wherein the outer lining is provided with a thickening in the direction of the wear  lining,  which  thickening  is  applied  at  the  level  of  the interface-layer being present during operation between the iron  being carried through the runner and a slag layer floating on the iron.
Patent CA-2038786-A1 (CA)
Title: Process for the preparation of cationic binders for coatings and their use
Inventor: SCHIPFER RUDOLF
IPC: C08G59/02
Filed: 1991-03-21
Abstract: ABSTRACT OF THE DISCLOSURE         Binders for cathodic electrodeposition coatings based on epoxy resin-amine adducts are obtained by incor-poration of oxazolidone structures in combination with diamine bridges built up in a specific manner.  The modi-fied epoxy resin-amine adducts are used in electro-dipping coatings together with crosslinking components.  The stoved coating films have excellent corrosion protection, espe-cially at the edges of workpieces.
Patent CA-2039415-A1 (CA)
Inventor: KIELY PHILIP A
IPC: H01L29/778
Filed: 1991-03-28
Abstract: A high transconductance field effect transistor is realized by controlling the doping level in a conducting channel buried beneath a heterointerface.  In one exemplary embodiment, a channel comprising an undoped, high mobility, narrow band gap quantum well in combination with an intermediate band gap layer is formed beneath a heterointerface.  The heterojunction interface is between a wide band gap layer and the quantum well region.  A charge sheet having the same conductivity type as the wide bandgap layer is formed near the heterointerface. Advantageously, the transconductance is enhanced by conduction in the undoped filled quantum well region.
Patent CA-2039557-A1 (CA)
Inventor: CHAMBERLAIN JAMIE H
IPC: B32B7/06
Filed: 1991-04-02
Abstract: ABSTRACT OF THE DISCLOSURE    A conductive copper foil for use in preparing printed circuit boards  is  protected  from damage  during storage, shipment and further processing by covering at least one side of the foil with a sheet of plastic film.   The film is removably joined with the foil as a result of the essential absence of gaseous material between the film and the foil.          Thus, the film conforms intimately to the contours and shape of the foil surface and clings tightly thereto to permit movement and further processing of the foil with the film adhering tightly thereto.  The absence of air between the film and the foil is produced by oppositely statically electrically charging the film and the foil such that they are forced together  sufficiently  to  squeeze  the  air out  from therebetween.   The  film  is  selected  to be  sufficiently resistant to laminating temperature and pressure conditions so as to remain in its covering, protecting relationship to the foil and avoid sticking to the laminating press plate and retain its removability from the foil after lamination.
Patent CA-2040505-A1 (CA)
Title: Electrographic structure and process
Inventor: LEWICKI WALTER J JR
IPC: G03G15/32
Filed: 1991-04-15
Abstract: ABSTRACT        This invention involves a structure containing a layered imaged configuration with an overcoating layer.  The overcoating layer, in addition to encapsulating the toned  image,  substantially  strengthens the dielectric layer after it  is removed from the system. Also,  a process for producing a product having an image depth perception and the product itself are disclosed.   The layered structure may have one or two dielectric layers having a combined thickness of from about 0.2 to about 10.0 mils.
Patent CA-2041907-A1 (CA)
Inventor: COWAN BEN
IPC: B62M9/08
Filed: 1991-05-07
Abstract: By incorporating an infinitely adjustable, variable speed transmission unit into a bicycle driving mechanism, it becomes possible to vary the speed of the bicycle in a very easy and continuous manner from any predetermined maximum value of rotation in the forward direction to zero.  By using a similar, infinitely adjustable, variable speed transmission unit in combination with a standard, two speed and reverse gear box, a very efficient automotive transmission system is also achieved, having a stepless speed control with a large power input.
Patent CA-2042957-A1 (CA)
Title: Method and installation for thermal disposal of sewage sludge
Inventor: COENEN HUBERT
IPC: C02F11/13
Filed: 1991-05-21
Abstract: ABSTRACT      Method  for  thermal  disposal  of  sewage  sludge  by drying, incineration and flue gas dedusting and flue gas washing.   The method is characterized in that the ashes and  flue  gas  dust  resulting  from  combustion  and  the contaminated sludge occuring during flue gas washing are treated together with high temperature  combustion with melting of solids.
Patent CA-2043015-A1 (CA)
Title: Method for treating sludges
Inventor: WEINWURM PETER
IPC: C02F11/10
Filed: 1991-05-22
Abstract: ABSTRACT      A method for the separation and recovery of volatiles from a sludge containing about 1 to 80% by weight liquid solvents and 20 to 99% by weight solids, in which said sludge is fed with a reagent powder material in an amount effective to form a plastic mixture having a high surface area to a distillation vessel, said mixture is heated to a temperature up to about 350°C while said mixture is advanced through the vessel for a time sufficient to distill a sufficient portion of the solvents to yield a solid residue powder, distilled solvents are condensed, and the solid residue powder recovered.  The vessel preferably is a mechanical fluidized bed distillation vessel and said mixture is fluidized while being heated therein under a partial vacuum in a non-oxidizing atmosphere.  The effective amount of absorbent powder material comprises about 5 to 70 wt% of the plastic mixture.
Patent CA-2049474-A1 (CA)
Title: Formaldehyde-free binder
Inventor: LOFTON ELIZABETH P
IPC: D06M13/12
Filed: 1991-08-19
Abstract: ABSTRACT OF DISCLOSURE       A method for treating a flexible, porous substrate with a water-borne formaldehyde-free composition and a flexible, porous substrate so treated are provided. More particularly, this invention is directed to a method for treating a nonwoven fabric with an emulsion-polymerized binder containing certain copolymerized ethylenically-unsaturated dicarboxylic acids, or derivatives thereof, wherein the binder is partially neutralized with a fixed base.
Patent CA-2051088-A1 (CA)
Title: Dead axle suspension for a pair of driven wheels including a lateral guide
Inventor: COLLINS WILLIAM T JR
IPC: B60G9/02
Filed: 1991-09-10
Abstract: DEAD AXLE SUSPENSION FOR A PAIR OF DRIVEN WHEELS INCLUDING A LATERAL GUIDE                       Abstract A rear suspension particularly adapted for light and medium weight trucks and buses wherein a chassis and body are supported upon a dead axle the latter of which is of a light weight and rigid construction so as to permit a lower positioning of the chassis relative to the ground and in such a way as to eliminate lateral displacement of the dead axle relative to the chassis and wherein the aft end of the roll axis of the suspension is either horizontal or displaced vertically above a horizontal line passing through the point of articulation of the suspension to the chassis to eliminate the tendency of the dead axle to oversteer the vehicle as it moves vertically relative to the chassis.
Patent CA-2051183-A1 (CA)
IPC: B05C17/005
Filed: 1991-09-11
Abstract: The applicator tip is used by inserting it between the side edges of the adjacent layers of floorcovering sheeting which are to be seamed.  The tip is pulled along the line of abutment and wets the side edges with liquid adhesive.  The tip comprises an upright body having a bottom foot portion having wedges for upraising and tilting marginal portions of the floorcovering as they pass therebeneath, an intermediate ankle portion that is relatively narrow, and an upper leg portion adapted to connect with a squeeze bottle containing the adhesive.  A flow passageway extends through the leg portion and into the ankle portion and has  side-opening outlets  in the side surfaces of the ankle portion.  Thus the adhesive is discharged laterally relative to the seam.  Means are provided to press against the top surface of the upraised marginal portions to guide the side edges into close engagement with the outlets.
Patent CA-2052548-A1 (CA)
Title: Process for the conversion of formaldehyed to hydrocarbons
Inventor: WADE STEVEN R
IPC: C07B61/00
Filed: 1991-10-01
Abstract: ABSTRACT OF THE DISCLOSURE            PROCESS FOR THE CONVERSION OF FORMALDEHYDE TO HYDROCARBONS      A process for the conversion of an aqueous solution of formaldehyde to hydrocarbon products comprising passing the formaldehyde solution over a catalyst bed comprising a metal oxide catalyst component suitable for converting formaldehyde to methanol and/or dimethyl ether and an acid catalyst component suitable for converting the methanol and/or dimethyl ether to hydrocarbons, provided that if said formaldehyde solution comprises methanol, the formaldehyde to methanol molar ratio is greater than 1:1.
Patent CA-2055572-A1 (CA)
Title: Processes and intermediates for thromboxane receptor antagonists
Inventor: KRONENTHAL DAVID
IPC: A61P7/02
Filed: 1991-11-14
Abstract: HA528 Abstract PROCESS AND INTERMEDIATES FOR THROMBOXANE RECEPTOR ANTAGONISTS Disclosed herein is a process for preparing a monoacyl of the formula in which the associated diacyl is hydrolyzed in the presence of one or more water-soluble enzymes or microorganisms capable of selectively hydrolyzing the -O-C-(O)-R1 group, wherein the treatment is carried out in a biphasic solvent system comprising an aqueous phase having the enzymes or microorganisms and an organic phase immiscible in water having the diester. This acyl-alcohol is oxidized to the associated acyl-aldehydes, which are hydrolyzed with an alkali metal carbonate, bicarbonate or hydroxide to the cis furanol. The thromboxane receptor antagonist [lS-[1.alpha.,2.alpha.(Z),3.alpha.,4.alpha.]]-7-[3[[[[(1-oxoheptyl)-amino]acetyl]amino]methyl-7-oxabicyclo-[2.2.1]-hept-2-yl]-5-heptenoic acid may be prepared using these processes.
Patent CA-2056018-A1 (CA)
Title: N-aryl-3-aryl-4-substituted-2,3,4,5-tetrahydro-1h-pyrazole- 1-carboxamides and methods for their production
Inventor: JACOBSON RICHARD M
IPC: C07D231/04
Filed: 1991-11-22
Abstract: N-ARYL-3-ARYL-4-SUBSTITUTED-2,3,4,5-TETRAHYDRO-1H-PRODUCTION     ABSTRACT OF THE DISCLOSURE     This invention relates to novel N-ary1-3-aryl-4-substituted-2,3,4,5 tetrahydro-1H-pyrazol-1-carboxamide compounds which are useful as pesticides, compositions containing those compounds, methods of controlling pests and processes for preparing these compounds.
Patent CA-2056298-A1 (CA)
Title: Telecommunications network restoration architecture
Inventor: ASKEW JAMES D
IPC: H04Q3/66
Filed: 1991-11-27
Abstract: A restoration system is provided for enhancing the reliability of a telecommunications network such that particular traffic which is disrupted by, for example, a faulty link, may be quickly rerouted via an alternate route established "on the fly".  In particular, each node and link forming the network is monitored, and in the event that such monitoring detects a faulty link or node then a central controller is notified. The controller is arranged to locate spare capacity and establish an alternate route, in which the continuity of the alternate route is confirmed before the disrupted traffic is transferred thereto.
Patent CA-2059614-A1 (CA)
Title: Thermoformed articles with improved ease of cutting and resistance to sticking
Inventor: LOGULLO FRANCIS M
IPC: B29K67/00
Filed: 1992-01-17
Abstract: TITLE THERMOFORMED ARTICLES WITH IMPROVED EASE    OF CUTTING AND RESISTANCE TO STICKlNG      ABSTRACT OF THE DISCLOSURE Thermoformed trays prepared from a blend of 90 to 99.9 percent of polyethylene terephthalate resin, a small amount of sodium ion, and a small amount of wax exhibit effective crystallization rates and improved trimming and stacking properties.
Patent CA-2062674-A1 (CA)
Title: Silver brom(oiod)ide emulsions of increased sensitivity in the near infrared
Inventor: MARCHETTI ALFRED P
IPC: G03C1/015
Filed: 1992-03-11
Abstract: SILVER BROM(OIOD)IDE EMULSIONS      OF INCREASED SENSITIVITY IN THE NEAR INFRARED                 Abstract of the Disclosure A photographic emulsion is disclosed in which an infrared spectral sensitizing dye is adsorbed to the surface of silver bromide grains optionally containing iodide.  The grains are formed in the presence of a hexacoordination complex of iron and at least three cyanide ligands to counteract dye desensitization.
Patent CA-2063561-A1 (CA)
Title: Power supply
Inventor: ZYLSTRA HENRY J
IPC: H02H3/087
Filed: 1990-05-22
Abstract: A power supply (1) incorporating a fault detection circuit (3) controlling a circuit breaker (2) is described. The power supply is isolated from relatively large applied DC voltages. This isolation is provided by a coupling capacitor (C1, C2, C3) in each of the line leads (A, B, C). The tripping energy for the circuit breaker can be provided either directly from the full wave rectifier (D1-D4) output, or directly from the line lead or leads. In the case of the former, a reservoir capacitor (C4) may be used for storage of charge for tripping of the circuit breaker.
Patent CA-2064879-A1 (CA)
Title: Soldering tool
Inventor: EISELE ERNST
IPC: B23K3/03
Filed: 1990-08-21
Abstract: A soldering tool comprises a handle (10) and a rod-shaped or tubular heating element fastened to the front end of the handle. A soldering tip (4) can be placed on the free end of the heating element. The soldering tip (4) has a borehole for receiving the free end of the heating element and can be fixed to the handle (10) or heating element by means of a fastening sleeve (1). The end of the fastening sleeve (1) nearer the soldering tip has first rotary catches (2, 3) which can be locked by second rotary catches (5) arranged at the rear end of the soldering tip (4) by turning the fastening sleeve (1) relative to the soldering tip (4).
Patent CA-2066451-A1 (CA)
Title: Double flooring for wiring installation
Inventor: MIURA HIROKAZU
IPC: E04F15/024
Filed: 1991-07-23
Abstract: ABSTRACT OF THE DISCLOSURE      A double flooring for wiring installation, is formed so that plural double flooring materials are lyingly provided on a placed floor or on a slab directly when wiring, for example, computer, telephone, the other electrical apparatus and the like in modifying the position of office automation or house automation.  The double flooring for wiring installation is comprising a floor board having one foot at each corner thereof at least, each foot being of equal length to the others.  Whereby, the space for wiring is formed between the lower surface of the floor board having feet and the top surface of the placed floor and the like.
Patent CA-2066947-A1 (CA)
Inventor: LAL SUDARSHAN
IPC: C23F1/00
Filed: 1992-04-23
Abstract: This invention is a process for etching copper sheets on insulating boards for use in fabricating multilayer printed circuit boards. The improvementresides in adding to a standard copper etching solution certain alkyltrimethyl ammonium chlorides with alkyl chain lengths ranging from 6 to 20 carbon atoms inamounts sufficient to yield intermediate kinetics behavior. Of special interest are dodecyltrimethyl ammonium chloride, hexadecyltrimethyl ammonium chloride and octadecyltrimethyl ammonium chloride present in an amount of from 0.01 to 1.0 wt%. A silicon-based antiforming agent may be added in amounts of from 0.05 to 2.0wt. % to prevent an unacceptably large amount of foam from occurring during etching. With this formulation, the rate is mass transport controlled at low rates and almost independent of mass transport at high rates due to the inhibition of the surface reaction rate. As a result, non-uniformities in etch rates due to variations in mass transport conditions in processing equipment may be eliminated.  This unique formulation could significantly improve the yields presently obtained in manufacturing as well as allow the processing of fine-line multilayer circuit boards.
Patent CA-2067791-A1 (CA)
Inventor: GODFREY-PHILLIPS ARTHUR H
IPC: F42B7/08
Filed: 1990-10-23
Abstract: PCT No. PCT/GB90/01623 Sec. 371 Date Apr. 1, 1992 Sec. 102(e) Date Apr. 1, 1992 PCT Filed Oct. 23, 1990 PCT Pub. No. WO91/05982 PCT Pub. Date May 2, 1991.A shot-gun cartridge includes a main wad which is biodegradable. The wad is preferably formed from a composition including synthetic resin natural starch and chemically active prodegradents.
Patent CA-2068596-A1 (CA)
Title: Parallel processing system with process migration
Inventor: GREGOR STEVEN L
IPC: G06F9/50
Filed: 1992-05-13
Abstract: PARALLEL PROCESSING SYSTEM WITH PROCESS MIGRATION              ABSTRACT OF THE DISCLOSURE            A parallel processing system having at least first and second processors, main memory,  and local memories for each processor.  Each memory contains processes stored in a  plurality  of  data  word  locations.  Each  process comprises map data and one or more units of operating data.  The map data comprises processor identifier data and invocation availability data.  The address of the map data of a process has a standard relationship to the addresses of all of the operating data of the processes. Each processor comprises means for addressing map data of a process each time a data word location in that process is addressed.
Patent CA-2070895-A1 (CA)
Title: 7-oxabicycloheptyl substituted heterocyclic amide prostaglandin analogs useful in the treatment of thrombotic and vasospastic disease
Inventor: HALL STEVEN E
IPC: A61P11/08
Filed: 1992-06-10
Abstract: HA579 Abstract 7-OXABICYCLOHEPTYL SUBSTITUTED HETEROCYCLIC AMIDE PROSTAGLANDIN ANALOGS USEFUL IN THE TREATMENT OF THROMBOTIC AND VASOSPASTIC DISEASE 7-Oxabicycloheptyl substituted heterocyclic amide prostaglandin analogs are provided which are thromboxane A2 (TXA2) receptor antagonists or combined thromboxane A2 receptor antagonist/throm-boxane synthetase inhibitors and have the structural formula wherein R is SO3H, P(O)OR3OH or P(O)R4OH, X is O or NH, and Z, R1, R2, R3 and R4 are as defined herein.
Patent CA-2073139-A1 (CA)
Title: Method and apparatus for treating fluent materials
Inventor: HIDALGO OSCAR MARIO GUAGNELLI
IPC: B01J19/10
Filed: 1992-07-07
Abstract: A method for treating a continuous flow of fluent materials employs an apparatus (20, 200) comprising a generally cylindrical housing (23, 202) having an inlet (22, 204), and outlet (24, 206) and a plurality of treatment stages for successively imparting pulses of energy to the fluent materials in order to disassociate the materials on a molecular level and achieve a homogeneous, highly dispersed mixture. Each of the treatment stages includes a pair of baffle plates (50, 52, 248, 250) which are relatively rotatable and oppose the flow of fluent materials through the housing alternating zones of high pressure and cavitation. Each pair of the baffle plates include matched sets of openings (54, 56, 252, 254) therein which are periodically brought into alignment with each other as one plate rotates relatively to the other, thereby allowing bursts of the fluent material to flow therethrough, from an upstream area (32, 212) of relatively high pressure into a cavitation area (84, 258). One of the battle plates (52, 60, 248, 264) in each pair thereof is mounted on a shaft (68, 224) rotated by a motor (76) located external of the housing.
Patent CA-2084369-A1 (CA)
Title: Water-borne photoimageable compositions
Inventor: SPEELMAN BRENT T
IPC: G03F7/033
Filed: 1992-12-02
Abstract: PATENT     WATER-BORNE PHOTOIMAGEABLE COMPOSITIONS                           (?) Summary of the Invention A water-borne and aqueous developable photoimageable composition comprises an emulsion binder polymer having an acid number of between about 50 and about 175 with sufficient surfactant to maintain micelles of said emulsion polymer, a solution binder polymer having an acid number of between about 100 and about 250, and ammonia or an ammonium compound at a sufficient level to solubilize said solution in an aqueous medium containing no organic solvent, photopolymerizable monomer and a photoinitiator.
Patent CA-2084574-A1 (CA)
Inventor: KOVAL MICHAEL J
IPC: G06F3/00
Filed: 1992-12-04
Abstract: A personal computer based, multimedia, data processing system includes a software solution to the problem of synchronizing two or more data streams which output data to two or more multimedia output devices. One stream is a master and each other stream is a slave. The master stream generates sync pulses that can be handled in two different synchronization methods, master-slave independent synchronization or master-driven slave synchronization. Sync pulses are generated with a predetermined granularity, and synchronization is achieved when a slave stream is out of tolerance. Adaptive resynchronization may be used to speed up or slow down a slave stream.
Patent CA-2084703-A1 (CA)
Inventor: CAFARO MICHAEL
IPC: A61C17/26
Filed: 1992-12-07
Abstract: A brush member has two ends and includes a brush portion at one end,  the brush portion including a plurality of bristles extending outwardly.  A gripping member houses a motor and includes a drive rod connected to the shaft of the motor for rotatably driving the bristles,  the brush member being detachably attached to the gripping member.  A battery case houses a rechargeable battery and a recharging circuit for recharging the rechargeable battery.   The battery case is detachably  attached to  the other end of the gripping member whereby electric power is provided from the battery to the motor for driving the motor.   When travelling,  the brush member,  gripping member and battery case are detached from each other and  are conveniently  stored in a travel case.
Patent CA-2090595-A1 (CA)
Inventor: WEINSTEIN STEVEN J
IPC: B05D1/34
Filed: 1993-02-26
Abstract: A method of reducing the tendency toward formation of ripple imperfections in the coating of multilayer photographic elements is disclosed.  Coating compositions are prepared for upper, middle, and lower gelatin-containing layers of a layered mass.  The middle layer bas a gelatin concentration within three weight percent of each of the upper and lower layers and the upper, middle, and lower layers each have a viscosity that differs from a norm by no more than 15%.  A laminar flow of a layered mass including the coating compositions is formed and then received as a layered coating on a moving support.  A multilayer photographic element is also disclosed.