baber/WOPTO huggingface dataset:
Patent CA-2003122-C (CA)
Title: Cabinet for cooking appliances
Inventor: NISHIKAWA KAZUHIRO
IPC: F24C15/02
Filed: 1989-11-16
Granted: 1993-04-06
Abstract: ABSTRACT OF THE DISCLOSURE      A cabinet for containing cooking appliances such as a microwave oven having a cooking chamber having a front opening, a door for closing the front opening of the cooking chamber, a locking mechanism for locking the door at a closed position, and a manually operated member mounted in the vicinity of the front opening of the microwave oven for manually unlocking the door locked by the locking mechanism is disclosed.   The cabinet includes a compartment for containing the cooking appliance, a cover for concealing a space between the front inner periphery of the compartment and the front outer periphery of the cooking appliance, the cover having a recess formed therein so as to correspond to the manually operated member so that the manually operated member is positioned in the recess, the recess having a front opening, and a closure member rotatably mounted on the cover member so as to close and open the front opening of the recess.
Patent CA-2005821-C (CA)
Title: Processing additive for halogen-containing polymers
Inventor: STERN PETER
IPC: C08K5/3477
Filed: 1989-12-18
Granted: 1996-04-30
Abstract: Proposed  is  a processing  additive for halogen-containing polymers, in particular for polyvinyl chloride, with a content of a  synthetic, crystalline, finely  particulate alkali metal alumo silicate  containing 13 to 25 percent by weight of bound water, which - in its anhydrous form - is of the composition  (0.7 - 1.1) Me2O.Al2O3 x (1.3 - 2.4) SiO2, Me standing for an alkali metal, wherein the alkali metal alumo silciate is present  in combination with at least one isocyanuric acid derivative of the formula    I     wherein each n stands for an integer from 0 to 5, preferably from 0 to 3, each X represents H or a straight or branched alkyl group having 1 to 6 carbon atoms, preferably 1 or 2 carbon atoms,  and each R is -OH or -COOH,  and wherein the n's, X's and/or R's  preferably have the  same  meaning,  as  well  as  halogen-containing  polymers  stabilized with use of this combination.
Patent CA-2007246-C (CA)
Title: Forming metal shield from tape
Inventor: CHABANE MOHAMED
IPC: H01B13/26
Filed: 1990-01-05
Granted: 1994-01-25
Abstract: FORMING METAL SHIELD FROM TAPE     Abstract of the Disclosure Forming a metal shield on a cable core in which a frusto-conical forming surface for the shield has a plurality of former sections disposed side-by-side from a downstream end of the former.  The sections are removable, in order, from the downstream end to increase the downstream end diameter of the forming surface and may be replaced, in order, so as to decrease the diameter at the downstream end for the purpose of applying shields to cable cores of different diameters.
Patent CA-2011439-C (CA)
Title: Thermal transit time flow measurement system
Inventor: GOLDBERG JACK
IPC: G01F1/7084
Filed: 1990-03-05
Granted: 1997-07-01
Abstract: The apparatus accurately measures flow rate of fluid within a conduit without direct fluid contact, based on the introduction of a thermal marker into the fluid stream by means  of at least one externally mounted heater, and detection of the thermal marker by means of at least one externally mounted sensor. The transit time of the thermal marker can be ascertained for transit of the thermal marker from a heater to a sensor, or from one sensor to another sensor. A preferred embodiment of the heater comprises a resonant microwave cavity which heats the fluid radiatively, and a preferred embodiment of the sensor comprises a resonant microwave cavity through which a portion of the fluid conduit passes, the resonant characteristics of said microwave sensor being perturbed by the passage of the thermal marker.
Patent CA-2013899-C (CA)
Title: Density element and method of manufacture thereof
Inventor: PEERY JOHN R
IPC: A61K9/22
Filed: 1990-04-05
Granted: 2000-04-04
Abstract: A density element (12) for use in ruminal delivery devices (10) which is manufactured by partial sintering in such a manner as to fragment upon contact with the many parts in rendering machinery without damage to the blades. The density element (12) has density of at least about 1.5 gm/cm3 and a transverse rupture strength greater than about 3000 psi (210 kg/cm2) no greater than about 30,000 psi (2120 kg/cm2). The part is sintered under conditions which do not permit full weld bond strength to be obtained and may thereafter be heat treated or impregnated with an inert hydrophobic material to increase corrosion resistance.
Patent CA-2015012-C (CA)
Title: Vehicle tyre
Inventor: SPONAGEL PETER
IPC: B60C13/00
Filed: 1990-04-20
Granted: 1995-05-16
Abstract: A vehicle tyre having a tread surface of ribs, blocks or pads and substantially U- or V-shaped tread grooves arranged therebetween wherein at least one of the two sidewalls of at least a part of the tread grooves  is provided with grip enhancing steps which extend in the longitudinal groove direction and follow the sidewall contour.
Patent CA-2019056-C (CA)
Inventor: CARSON DOUGLAS W
IPC: F21V21/04
Filed: 1990-06-15
Granted: 2000-10-17
Abstract: A recessed lighting fixture is molded in one piece, preferably of plastic, and includes a frame for holding a lamp housing as well as a junction box having a hinged lid. The frame and junction box define a planer vertical surface which is abutted against a joist and affixed thereto by nails extending through spaced nailways.      Hangerways are also provided in the lighting fixture through which hanger bars are inserted for supporting the lighting fixture between two joists as an alternate way of supporting the fixture.
Patent CA-2027144-C (CA)
Title: Process and catalyst for producing syndiotactic polyolefins
Inventor: EWEN JOHN A
IPC: C07F17/00
Filed: 1990-10-09
Granted: 2001-07-24
Abstract: Syndiospecific catalysts and processes for the syndiotactic propagation of a polymer chain derived from an ethylenically unsaturated monomer which contains 3 or more carbon atoms or is a substituted vinyl compound. The catalysts comprise an unbalanced metallocene cation, characterized by a cationic metallocene ligand having sterically dissimilar ring structures joined to a positively charged coordinating transition metal atom, and a stable noncoordinating counter anion for the metallocene cation. One of said ring structures is a substituted or unsubstituted cyclopentadienyl ring and the other of the ring structures is a substituted cyclopentadienyl group which is sterically different from the first cyclopentadienyl group. A structural bridge between cyclopentadienyl groups imparts stereorigidity to the catalyst. The catalyst is contacted with a C3+ alpha olefin or other ethylenically unsaturated compound in a polymerization reaction zone and maintained in contact with the catalyst in the reaction zone under polymerizatio conditions to produce a syndiotactic polymer.
Patent CA-2028715-C (CA)
Title: A method of producing panels
Inventor: COLOMBO GIAN CARLO
IPC: B29C48/64
Filed: 1990-10-29
Granted: 2000-06-27
Abstract: Remoldable panels consisting essentially of a high melting high tenacity thermoplastic polymer and a thermosensitive organic filler are produced by forming a mixture of polymer and filler, extruding the mixture to form a web and calendering the web prior to its solidification; the mixture is formed and extruded in a single step by feeding the polymer and the thermosensitive filler into an integral mixing and extruding space that has a feeding end and an extrusion end and comprises:a pair of co-rotating parallel elongated elements each having a length extending between the feeding end and the extrusion end of the integral space; at least three feedingly effective helical extrusion sections mutually distanced along the length of the elements; at least two essentially non-feeding kneading sections each of which is positioned between adjacent extrusion sections; the kneading sections and the extrusion sections of the elements are provided at adjacent positions along their length to form at least two kneading zones and at least three extrusion zones so as to provide one kneading zone between adjacent extrusion zones in the integral space; the polymer is introduced into the integral space in the area of a first extrusion zone located near the feeding end while the thermosensitive filler is introduced in the area of a second extrusion zone situated closer to the extrusion end than the first extrusion zone. A venting means is connected to the extrusion zone nearest the extrusion end.
Patent CA-2030535-C (CA)
Title: Method of decontaminating earth and/or natural gas processing equipment
Inventor: MORRIS RICHARD L
IPC: G21F9/00
Filed: 1990-04-03
Granted: 2000-02-01
Abstract: Surface layers of the earth contaminated with precipitates of alkaline earth metal sulfates including radium sulfate derived from subterranean waters brought to the surface of the earth, are decontaminated using an aqueous chemical composition including a polyaminopolycarboxylic acid such as ETDA or DTFA in combination with a synergist, preferably oxalate or monocarboxylic acid anion such as salicylate. The surface layers may be decontaminated in situ by applying the solvent to the earth to bring the precipitates into dissolved form after which the dissolved precipitates are leached into lower layers of the earth by percolation with water. Alternatively, the earth may be removed from its original site and decontaminated in a tank or lined pond after which the decontaminated earth may be returned to its approximate original site. There is also disclosed a method of decontaminating natural gas processing equipment using the aqueous chemical composition.
Patent CA-2033389-C (CA)
Title: Diamond-coated bodies and process for preparation thereof
Inventor: WATANABE MASAKAZU
IPC: C04B41/50
Filed: 1990-12-28
Granted: 1997-10-07
Abstract: A  diamond-coated  body  is  prepared  by  coating  a dimaond film on the surface of a sintered body by means of vapor phase synthesis,  the sintered body being so prepared by subjecting  a  sintered  body prepared  from ceramics  based on silicon nitride to heat treatment at the temperature of 1,400 °C to 1,700 °C as to give a crystalline intergranular phase. The resulting diamond-coated body has  excellent  adhesion between the diamond  film and the substrate  and  it  is  appropriately employed for cutting tools and so on because, when applied to the cutting tools,  they can be used for cutting for a long period of time.
Patent CA-2034244-C (CA)
Title: Detergent compositions and process for preparing them
Inventor: EVANS DAVID GEORGE
IPC: C11D17/06
Filed: 1991-01-16
Granted: 1999-11-30
Abstract: A batch process for the preparation of detergent powder of high bulk density comprises neutralising a detergent acid (anionic surfactant precursor), eg linear alkylbenzene sulphonic acid, with a particulate solid water-soluble alkaline inorganic material, for example, sodium carbonate (optionally plus other alkaline materials and/or detergency builders, for example, alkali metal aluminosilicate), in a high-speed mixer/granulator, eg Fukae mixer, and granulating the product in the mixer.      The reaction mixture remains particulate throughout the process, without the need to keep the temperature during the neutralisation step to 55°C or below, and a high-quality high-bulk-density particulate product is obtained.
Patent CA-2035702-C (CA)
Title: Ultrasonically generated cavitating or interrupted jet
Inventor: VIJAY MOHAN
IPC: E21B7/24
Filed: 1991-02-05
Granted: 1996-10-01
Abstract: There  is  described  an  improved  ultrasonic  nozzle including a nozzle body having a fluid flow channel formed axially therethrough with an inlet at an upstream end of the channel for receiving a pressurized fluid and an orifice at the downstream end of the body for discharging the pressurized fluid towards a surface to be eroded, a transformer axially aligned within the flow channel to form, in cooperation with the flow channel, an annulus between the two for the flow of the  pressurized  fluid,  a  vibrator  for  ultrasonically oscillating the transformer to pulse the pressurized fluid prior to its discharge through the orifice.  The flow channel and transformer taper conformably axially inwardly in the direction of flow of the pressurized fluid at a uniform rate so that the transverse width of the annulus remains constant along the length of the transformer.
Patent CA-2037718-C (CA)
Title: Sulfate removal from alkali metal chlorate solutions and production of alkali metal chlorate including said removal
Inventor: SZANTO ISTVAN
IPC: C25B1/34
Filed: 1991-03-07
Granted: 1998-11-24
Abstract: A process for the removal of substantially chromium free sulfate from aqueous alkali metal solutions containing chromate and sulfate which includes mixing said solutions having a pH of between about 2.5 and 4.5 with a calcium-containing material for a time and at  a  temperature  sufficient to form  a gypsum  precipitate  and separating said gypsum precipitate from said solutions ; as well as a  process  for  the   production   of  alkali  metal  chlorate  by electrolysis of alkali metal chloride including said removal.
Patent CA-2038615-C (CA)
Inventor: AKATSU MASAMICHI
IPC: D01F6/76
Filed: 1991-03-19
Granted: 1995-12-12
Abstract: Disclosed herein are poly(phenylene sulfide) fibers having a tensile strength of at least 3.5 g/d, a knot tenacity of at least 2 g/d, a loop tenacity of at least 3.5 g/d, the number of abrasion cycles until breaking in a flexing abrasion test of at least 3,000 times, and the number of repeated flexings until breaking in a flexural fatigue test of at least 150 times.  A process for the production of poly(phenylene sulfide) fibers, which comprises melt-spinning a poly(phenylene sulfide), stretching the resultant unstretched filaments at a draw ratio of 2:1 to 7:1 within a temperature range of 80-260°C, and heat-treating the stretched filaments for 0.1-30 seconds under conditions of a take-up ratio of 0.8:1 to 1.35:1 in a dry heat atmosphere exceeding 285°C, but not exceeding 385°C, is also disclosed.
Patent CA-2040793-C (CA)
Title: Plasmids expressing patatin and adp-glucose-pyrophosphorylase sequences
Inventor: WILLMITZER LOTHAR
IPC: A23L19/12
Filed: 1991-04-18
Granted: 2002-11-19
Abstract: Plasmids are described, the DNA sequences of which when inserted into the genome of a plant modify the carbohydrate or protein concentration and the carbohydrate or protein composition, as well as plant cells and plants that contain those plasmids.        DNA located in plasmids described reduces in the plant the ADP-glucose-pyrophosphorylase activity and thereby the starch concentration and at the same time increases the mono- and oligosaccharide concentration. Other DNA in plasmids reduces or increases the protein concentration.  Plants that contain those plasmids are suitable inter alia for the extraction of sugar or as protein-enriched food or fodder.
Patent CA-2042192-C (CA)
Title: Superconductive optoelectronic device with the basic substance cu o of superconductive-conjugate photoconductivity
Inventor: MASUMI TAIZO
IPC: H01L31/0264
Filed: 1991-05-09
Granted: 1996-08-06
Abstract: The disclosed superconductive optoelectronic device stems from the inventor's important discovery of a phenomenon that the basic substance Cu2O reveals photoconductivity below several temperatures Tps in steps thereof, Tps being comparable with a series of the critical temperatures of superconductivity Tsc of relevant Cu-based superconductors, and such photoconduc-tivity of the basic substance is in a conjugate relationship with the superconductivity of the above Cu-based superconductors. The device of the invention has a gate region made of the above basic substance Cu2O and a source region and a drain region made of the above Cu-based superconductors, the source and drain regions connected to each other, so that electric current therebetween at a temperature below the step temperature Tps of the basic substance is switched andtor controlled by the incident light intensity illuminated to the gate region. Also disclosed is an apparatus carrying a plurality with diversity of the above superconductive optoelectronic devices formed therein of an organized space-integration at ultrahigh density, in the form of arrays, and the like, to further develop effectively a new field of "Superconductive Optoelectronics".
Patent CA-2044625-C (CA)
Title: Closure apparatus for pipes and vessels
Inventor: WALLSKOG HARVEY ARVID
IPC: F16L37/10
Filed: 1990-10-26
Granted: 1996-10-22
Abstract: A closure apparatus for pipes,  vessels and the like includes a ring member (22) which extends around the perimeter of a pair of  flanges  (4,14).   The ring member  (22)  includes a plurality of rollers (34,36) that engage the nonmating sides (8,18) of the flanges (4,14) and impart a closing force thereon.  The ring (22)  is rotatable between a locked position wherein the flanges (4,14) are pressurized to an unlocked position wherein the rollers (34,36) align with slots (6,16) extending around the periphery of one or both of the flanges (4,14), whereby the flanges (4,14) can be pulled apart.
Patent CA-2046929-C (CA)
Title: T-pa pro stabilisation
Inventor: KOHNERT ULRICH
IPC: A61K47/18
Filed: 1990-12-19
Granted: 1997-01-14
Abstract: Pharmaceutical preparation of a non-glycosylated t-PA with an enzymatic activity of at least 0.1 MU/ml. and a pH value of 4.5 to 6, which contains citrate and at least one compound of the group consisting of a) ascorbic acid, b) EDTA, c) amino compounds of the formula whereby X = SO3H, CH(NH2)-CO2H, SO2H, H, NH2 or OH, R = C1-C9-alkylene, C3-C6-cycloalkylene or benzylidene and R1 and R2, independently of one another, are H or C1-C3-alkyl, d) guanidinobutyric acid, e) dimethylbiguanide, f) arginine, g) glucosamine, fructose, h) pyrimidine nucleosides and pyrimidine nucleotides, i) carboxylic acids substituted with one or more hydroxyl, keto and/or further carboxyl groups, as well as a medicament based on a non-glycosylated t-PA as active material and processes for its production.
Patent CA-2056043-C (CA)
Title: Flow restrictor for mud lubricated earth drilling motors
Inventor: WENZEL KENNETH HUGO
IPC: E21B4/02
Filed: 1991-11-22
Granted: 2001-07-31
Abstract: A flow restrictor for a mud lubricated earth drilling motor consisting of a first seal support non-rotatably coupled to an outer housing and a second seal support non-rotatably coupled to an inner tubular member which is telescopically received within the outer housing. The first seal support having a first seal face and the second seal support having a second seal face . The first seal support and the second seal support are axially movable.      A plurality of springs engage the first seal support to exert a biasing force bringing the first seal face into sealing engagement with the second seal face to form a mechanical seal, having a first side adjacent the outer housing and a second side adjacent the inner tubular member. A first fluid flow passage extends from the interior drilling mud flow passage of the inner tubular member the first side of the mechanical seal. A second fluid flow passage extends from the second side of the mechanical seal to exterior of the outer housing. At least one groove is provided across the first seal face and the second seal face, extending from the first side to the second side of the mechanical seal, such that a continuous flow of drilling mud passes through the groove and is vented to the exterior of the outer housing via the second fluid flow passage.
Patent CA-2061685-C (CA)
Title: Apparatus for and method of digital signal processing
Inventor: WISHART ALEXANDER WALKER
IPC: H03H17/02
Filed: 1992-02-21
Granted: 2001-07-03
Abstract: Apparatus for and a method of digital signal processing utilises a technique known as sub-band decomposition and reconstruction. A plurality of input channels are provided each of which is mixed with a vernier frequency correction. In a multiplexer implementation, an FFT weighted overlap-add demultiplexer (c) is provided for decomposing each input channel into sub-bands. The sub-band outputs are decimated by a factor (d) to the common input sampling rate of a multiplexer, the sub-bands from each channel then being passed into the appropriate ports of an FFT weighted overlap-add multiplexer (f) by means of a switch matrix (e). The multiplexer (f) reconstructs the individual channels, interpolates each channel up to the output sampling rate of the FDM signal, mixes each channel up to its assigned carrier frequency in the FDM and multiplexes the channels.       This provides a computationally efficient architecture with the flexibility to accommodate channels of differing bandwidths.
Patent CA-2065449-C (CA)
Inventor: OLIVERIA ROBERT J
IPC: H04R25/00
Filed: 1990-09-20
Granted: 1999-12-14
Abstract: Disposably attached to the ear piece of a hearing aid; which includes any sound transmission device, is a user-disposable slave (100 or 115) comprising soft polymeric retarded recovery foam that can be compressed to be freely insertable into a person's ear and allowed to recover to become wedged in the canal. Preferably, the sleeve is disposably attached to the ear piece by mating of screw threads on the sleeve (83) and the ear piece (108). The ear piece may be a separate component (80) from the hearing aid. The component (80) is made either of rigid or flexible plastic and has connecting portions (82 or 92) of various lengths depending on the depth of insertion of the sleeve into the canal. The sleeve (100) may be of various lengths depending on the depth of insertion into the ear canal desired. The sleeve/ear piece assembly may also have a layer of sound transmitting scrim (116) over its central opening to minimize penetration of the connecting portion past the end of the sleeve.
Patent CA-2066558-C (CA)
Title: Wireless access telephone-to-telephone network interface architecture
Inventor: BOLLIGER BRIAN DAVID
IPC: H04J3/06
Filed: 1992-04-21
Granted: 1997-06-17
Abstract: A wireless-access communications system, such as a CDMA cellular radio-telephonesystem (FIG. 2), comprises a packet-switched communications network (202, 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). Traffic of individual calls is packetized, and packet-bearing frames (300 in FIG. 7) of a plurality of calls are then statistically multiplexed and frame-relayed through the network to yield the high capacity, efficiency, and speed of traffic transport and handoff required for a CDMA cellular system. At each call processing unit (264 in FIG. 5), individual calls are handled by individual service circuits (602 & 612) which perform speech-processing functions such as coding and decoding, tone insertion, and echo cancellation, and packet-to-circuit-switched-PCM traffic conversion. Processors (602) adapt call processing unit timing to compensate for asynchrony between cells and call processing units and variations in call path transmission delays. Cell-to-cell communications, fixed call path addressing, and packetized control message transfers ensure that the same service circuit handles a call through even multiple soft handoffs (FIGS. 27 - 29) and efficiently communicates simultaneously with all cells involved in the handoff without involvement of system control entities and negative effect on system call-handling capacity. Both coded (packet-switched) and uncoded (circuit-switched) radio-telephone traffic are accommodated side-by-side. Wherever possible, existing and proven technology and component units are used to achieve low cost and high reliability.
Patent CA-2071822-C (CA)
Inventor: NGUYEN-DORAIS VAN DUNG
IPC: A61Q7/00
Filed: 1990-10-26
Granted: 1998-11-24
Abstract: La présente invention porte sur une composition pour stimuler la croissance capillaire, renfermant du limonène comme principe actif.  Un solvant, un diluant, un élément nutritif ou des mélanges de ces produits peuvent également être ajoutés à la composition.