baber/WOPTO huggingface dataset:
Patent CA-2051764-C (CA)
Title: Method and apparatus for forming electrophotographic image
Inventor: NODA NOBUTAKA
IPC: G03G15/06
Filed: 1991-09-18
Granted: 1999-12-28
Abstract: A method and an apparatus for forming an electrophotographic image based on applying an AC voltage or a voltage obtained by superposing a DC voltage on an AC voltage to an electroconductive base of a sensitive medium having a photoconductive layer formed on the electroconductive base, bringing a grounded electroconductive or semi-electroconductive member into contact with or close to the surface of the sensitive medium to charge this surface to a predetermined polarity, and exposing the surface of the sensitive medium to an image to form an electrostatic image.
Patent CA-2052120-C (CA)
Inventor: VANGERPEN HARLAN WELBERT
IPC: A01B63/112
Filed: 1991-09-24
Granted: 1996-06-04
Abstract: A draft force sensor includes a bendable shaft which extends laterally though a pair of spaced apart supports. Draft links are coupled to the ends of the shaft.  A curved flexible strap is positioned between the supports and has its ends coupled to the shaft by adjustable support brackets.  In a no-load condition the strap is concave in a direction facing the shaft.  A displacement transducer, such as a rectilinear potentiometer, linear variable transformer or other electrical device which is sensitive to displacement, is mounted between the shaft and the central portion of the strap.  The displacement transducer senses the change of distance from the shaft to the "arch" of the strap and generates an electrical signal indicative of the forces on the shaft.  The load from the draft links is applied to the ends of the shaft, causing it to bend and causing the strap to flex in the opposite direction.  Thus, the shaft and strap act as a mechanical amplifier.  The resulting draft sensor can sense both tension and compression.
Patent CA-2056230-C (CA)
Inventor: UEDA SHUICHIRO
IPC: A23L19/00
Filed: 1991-11-26
Granted: 1998-04-14
Abstract: A plant extract-containing beverage is provided by this invention which comprises at least one flavonoid-containing plant extract selected from the group consisting of ginkgo leaf extract, persimmon leaf extract, crataegus extract, Japanese pagoda extract and lycium fruit extract, xanthan gum, and water, and further as optional components, a sugar alcohol, at least one usual beverage component and ethanol.      The plant extract-containing beverage of the invention contains the various herb crude drugs such as ginkgo leaf extract in a stable state.
Patent CA-2069737-C (CA)
Title: Hearing aid
Inventor: SVEAN JARLE
IPC: H04R25/00
Filed: 1990-11-29
Granted: 1999-09-14
Abstract: Programmable hybrid hearing aid with digital signal processing comprising a main section (1) which can be inserted in the meatus (6). The main section (1) comprises an open connection between the ear opening and an inner portion of the meatus (6), providing an acoustic transmission channel with low-pass characteristic and resonant amplification. The main section further comprises an electroacoustic transmission channel based on digital signal processing and a signal processor (DSP) and with possibility for suppressing a possible acoustic signal feedback through the acoustic transmission channel. A variant of the hearing aid is provided with a microphone (M1) and the feedback signal is suppressed by digital filtering. Another variant of the hearing aid employs two microphones (M1, M2), and the feedback signal may then be suppressed by phasing out before the digital signal processing, while the digital signal processing also comprises cancellation of the feedback signal in case of high gain. A number of response functions are stored in a memory (RAM2) in a control unit and is freely chosen by the user in regard of adaption to hearing function and acoustic environment. All the electronics of the electroacoustic channel in the hearing aid is implemented as a monolithic integrated circuit (3) in CMOS technology.
Patent CA-2077416-C (CA)
Title: Corner covering device
Inventor: LIN FWU-SHENG
IPC: B65D81/05
Filed: 1992-09-02
Granted: 1995-09-05
Abstract: A one-piece foldable paper card with a center line which divides the paper card into two L-shaped members, each of which includes an arm section transverse to the center line, a transverse section parallel to the center line and an intermediate section adjacent to the center line and interconnecting the arm and transverse sections.  The paper card further includes a first fold between the intermediate sections and disposed on the center line, an elongated slit between the transverse sections and disposed on the center line, two spaced and parallel second fold portions, one of which is disposed between the intermediate section and the arm section while the other one is formed on the arm sections, and two spaced and parallel third fold portions,  one of which is disposed between the intermediate section and the transverse section while the other one of which is formed on the transverse section.   Each arm section includes a rectangular projection extending in the same direction as the transverse section.  Each of the transverse sections has a free edge parallel to the arm section and formed with a notch which has first side parallel to and opposite to the center line and a second side extending from the first side to the center line.
Patent CA-2089080-C (CA)
Title: Nanbv diagnostics: polynucleotides useful for screening for hepatitis c virus
Inventor: HOUGHTON MICHAEL
IPC: C12Q1/68
Filed: 1991-08-12
Granted: 2007-04-03
Abstract: A new virus, Hepatitis C virus (HCV), which has proven to be the major etiologic agent of blood-borne NANBH, was discovered by Applicant. Reagents for isolating, amplifying, and detecting HCV  polynucleo-tides are provided. These reagents are oligomers comprised of polynucleotide sequences which are capable of forming hybrid structures with HCV target polynucleotide sequences.
Patent CA-2089282-C (CA)
Inventor: VILASAGAR SHRIPATHY
IPC: C08L9/00
Filed: 1993-02-11
Granted: 2004-12-28
Abstract: A thermoplastic blend composition is provided containing an aromatic polycarbonate and a hydroxy functional graft copolymer. The compositions exhibit reduced gloss and are useful as molding resins.
Patent CA-2094234-C (CA)
Title: High density, three-dimensional, intercoupled circuit structure
Inventor: JACOBSEN STEPHEN C
IPC: B23K17/00
Filed: 1993-04-16
Granted: 2005-05-31
Abstract: A three-dimensional circuit structure includes a plurality of elongate cylindrical substrates positioned in parallel and in contact with one another. Electrical components are formed on the surfaces of the substrates, along with electrical conductors coupled to those components. The conductors are selectively positioned on each substrate so as to contact conductors on adjacent substrates to allow for the transfer of electrical signals between substrates. The conductor patterns on the substrates may be helical, circumferential, or longitudinal, in such a fashion that substrates may be added to or removed from the bundle so that the bundle will continue to operate as needed. The cylindrical nature of the substrates leaves gaps or channels between the substrates to which cooling fluid may be supplied for cooling the circuitry.
Patent CA-2095063-C (CA)
Title: Method for separating impurities from an aqueous alkali metal chlorate electrolyte
Inventor: ERIKSSON STINA
IPC: C01B11/14
Filed: 1993-04-28
Granted: 1999-01-12
Abstract: The  invention  relates  to  a  method for separating sulphate from an aqueous  electrolyte  in  an  alkali metal chlorate process,  thereby reducing  the operating cost and increasing the possibility of further closing  the electrolytical production  of alkali  metal chlorate. Calcium ions are added to a portion of the electrolyte,  for precipitating calcium  sulphate. By adjusting the pH within the range of from 4.6 up to about  7, and  combining the temperature, content of  ions and  the molar  ratio between sulphate and calcium  ions  added  in  a  suitable  manner,  the calcium sulphate  will  precipitate  predominantly  as  gypsum  and essentially without inclusions  and/or  co-precipitation of chromium-containing compounds  or chlorate. The precipitate is subsequently removed from  the  portion  of electrolyte, whereafter  the  thus  purified  portion  of electrolyte is recycled to the chlorate process. Any fluoride ions  in the electrolyte can  also be removed by the addition of calcium ions and a subsequent co-separation of the calcium fluoride precipitated with the calcium sulphate.
Patent CA-2097724-C (CA)
Title: Method and apparatus for calendering paper with internally heated roll
Inventor: HARRINGTON JOYCE M
IPC: D21G1/00
Filed: 1992-05-13
Granted: 1997-12-02
Abstract: Disclosed is a new internally heated calendering roll capable of finishing paper satisfactorily at the temperatures, heat loads and pressures required for substrata thermal molding. The roll is internally heated and has a circumferential wall at least 4 inches thick. It includes means to provide heat into the interior of the circumferential wall to be conducted through the wall to the outer surface for heating the paper web being calendered by the roll. The roll is constructed of a first material with a thin circumferential surface layer of a second, cermet or ceramic containing material. The surface layer material has a hardness of at least 530 Vickers and a thickness of between .003 inch and .030 inches. It is capable of being polished to a roughness of less than 6 micro inches Ra. The roll has uniformly spaced conduits for passing heated fluid located no more than 2 inches from the outer edge of the conduits to the circumferential surface. The roll is capable of conducting at least 8,500 BTU/Sq. Ft./Hr. heat through the roll without creating tensile hoop stress in excess of 1/2 of the yield strength of the first material.
Patent CA-2100268-C (CA)
Inventor: EMERSON STEPHEN G
IPC: C12N5/0789
Filed: 1991-12-17
Granted: 2008-12-02
Abstract: Methods, including culture media conditions and reactors, which provide for ex vivo human stem cell division and stable genetic transformation and/or the optimization of human hematopoietic progenitor cell cultures and/or increasing the metabolism or GM-CSF secretion or IL-6 secretion of human stromal cells are disclosed.  The methods rely on culturing human stem cells and/or human hemapoietic progenitor cells and/or human stromal cells in a liquid culture medium which is replaced, preferably perfused, either continuously or periodically, at a rate of 1 ml of medium per ml of culture per about 24 to about 48 hour period, and removing metabolic products and replenishing depleted nutrients while maintaining the culture under physiologically acceptable conditions. Optionally growth factors are added to the culture medium.
Patent CA-2112092-C (CA)
Title: Aqueous phosphor coating suspension for lamps
Inventor: CHAU CHUNG-NIN
IPC: C09K11/75
Filed: 1993-12-21
Granted: 2005-05-24
Abstract: An aqueous coating suspension for a fluorescent lamp comprises particles of an alkaline earth chlorofluorophosphor activated by antimony and manganese, water, at least one water soluble binder, a defoaming agent, a surface active agent and a sufficient amount of ammonium chloride for improving lamp maintenance.
Patent CA-2112797-C (CA)
Title: Treated polymeric non-woven fabric
Inventor: SINGLETON RAYMOND W
IPC: H01M50/489
Filed: 1992-07-09
Granted: 2002-10-15
Abstract: A polymeric sheet, which is particularly suited for use as a separator in an electrochemical device, is formed by graft copolymerising acrylic acid, or another vinyl monomer capable of reacting with an acid or a base to form a salt directly or indirectly with fibres of a non-woven sheet, whose outer surface is provided by a polyolefin, especially polypropylene.      The polyolefin is crosslinked as a result of the polymerisation reaction. The polymerisation reaction is preferably initiated by exposure of the sheet to ultraviolet radiation, after impregnation with an appropriate solution of the vinyl monomer.
Patent CA-2113745-C (CA)
Inventor: ERICKSON JOHN H
IPC: A61N1/32
Filed: 1994-01-19
Granted: 2003-05-06
Abstract: A hand-held programmer/monitor (500) for programming and monitoring an implantable tissue growth stimulator (10) is provided. The stimulator (10) includes circuitry (46) for implementing selected operations in response to a down-link signal transmitted by the programmer/monitor (500). The stimulator (10) also includes circuitry (14) for transmitting up-link signals to the programmer/monitor (500). The programmer/monitor (500) includes a control circuit (518) for generating the down-link signal. The control circuit (518) also processes the up-link signal to monitor the status of the implantable tissue growth stimulator (10). The programmer/monitor (500) also includes a transmit/receive circuit (514) for transmitting the down-link signal to and for receiving the up-link signal from the implantable tissue growth stimulator (10). The transmit/receive circuit (514) also couples the up-link signal to the control circuit (518).
Patent CA-2116565-C (CA)
Title: Low speed model following velocity command system for rotary wing aircraft
Inventor: GOLD PHILLIP J
IPC: G05D1/00
Filed: 1992-08-21
Granted: 2000-07-04
Abstract: A rate model algorithm responsive to the pilot attitude command signal, flight parameters sensors and an inverse vehicle model algorithm provide signals to rotary wing aircraft flight command to get the aerodynamical response to the pilot command.
Patent CA-2121605-C (CA)
Inventor: KONTIAINEN VEIJO
IPC: B27B1/00
Filed: 1992-10-19
Granted: 2002-02-05
Abstract: A novel apparatus and method are provided herein for sawing a timber, spar or plank. The apparatus includes a frame, and a feed mechanism, a chipper and a sawing apparatus, all of which are carried on the frame. A feed table is provided for feeding the timber in a controlled manner into the feed mechanism. The feed mechanism is operatively-associated with the chipper to feed the timber into chipper. The feed mechanism is connected with a first pivot with a vertical axis to the chipper.  The chipper is arranged to remove any curved surface portions from the timber. The chipper is also connected with a second pivot with a vertical axis to the sawing apparatus. The sawing apparatus is arranged to cut up a spar, arriving from the chipper, into boards, or deals. A control unit is provided for turning the feed mechanism and the chipper on their pivots relative to each other and to the sawing apparatus in a manner consistent with the curvature of the timber.
Patent CA-2124895-C (CA)
Inventor: KALISHMAN CALVIN
IPC: F01M13/02
Filed: 1994-06-01
Granted: 1999-09-21
Abstract: A system for enhancing the efficiency of an engine includes a container for holding an oil-based liquid.      Intake tubes extend into the liquid and cause air to create turbulence in the liquid. This turbulence forms particles in the container above the level of the liquid which are carried out of the container as enriched air.      The enriched air is combined with air from the crankcase prior to the PCV valve. The enriched air and the air from the crank case are then provided to the intake manifold of the engine.
Patent CA-2125124-C (CA)
Inventor: MORIOKA KOITSU
IPC: A44B19/06
Filed: 1994-06-03
Granted: 1997-02-04
Abstract: A method and apparatus for forming a slide-fastener coupling element from a metal wire having a substantially Y-shaped cross section wherein a blank piece is cut or sliced off from the metal wire by a co-action between a cutoff die and a cutoff punch, and substantially at the same time, the metal wire is chamfered along a next cutting line by a chamfering edge so as to form a substantially V-shaped groove extending in and along the peripheral surface of a head portion of the metal wire and the outside surface of each of two opposed leg portion of the metal wire.  The next slicing operation produces a blank piece which is already chamfered at its upper and lower peripheral edges extending along the peripheral surface of the head portion and the outside surfaces of respective leg portions of the blank piece.  A finished coupling element shaped from the thus chamfered blank piece is smooth to touch and ensures smooth sliding move-ment of a slider which will guarantee smooth opening and closing operation of a slide fastener.
Patent CA-2128293-C (CA)
Title: Fruit polyphenols and medicinal compositions containing them
Inventor: TANABE MASAYUKI
IPC: A61K31/35
Filed: 1994-07-18
Granted: 2002-09-03
Abstract: The present invention provides a fruit polyphenol obtained by subjecting unripe fruits of Rosaceae to pressing and/or extraction and then purifying the resulting juice or extract. The present invention further provides an antioxi-dant, a hypotensive agent, an antimutagenic agent, an anti-allergic agent and an anticariogenic agent each comprising, as an effective component, a fruit polyphenol obtained by subjecting unripe fruits of Rosaceae to pressing and/or extraction and then purifying the resulting juice or ex-tract. The fruit polyphenol of the present invention has various physiological activities, for example, an antioxida-tive activity, an ACE-inhibiting activity, an antimutagenic activity, a hyalulonidase-inhibiting activity and a GTase-inhibiting activity.
Patent CA-2128389-C (CA)
Title: Method of reducing document size for digital display
Inventor: O'GORMAN LAWRENCE PATRICK
IPC: H04N1/393
Filed: 1994-07-20
Granted: 1999-05-11
Abstract: A method of enhancing predefined features of a scanned image of a document page of reduced size for display includes subsampling the pixels of the scanned image to achieve a desired degree of reduction of the image size. The substampled signals are passed through a filter to obtain gray scale values. A sharpening filter is applied to the subsampled pixels to enhance the predefined features of the image.
Patent CA-2132242-C (CA)
Inventor: WONG CHEE-CHIU J
IPC: F16H7/12
Filed: 1994-09-16
Granted: 1997-12-09
Abstract: A low noise active tracking pulley idler reduces noise and actively tracks belts entrained around it by storing up undesirable impact energy and using it to guide the belts positioned around it. The idler includes an idler that is an integral member and has two cylindrical end portions with a flexible middle portion between them.
Patent CA-2133270-C (CA)
Title: Quaternary ammonium hydroxides as mercaptan scavengers
Inventor: WEERS JERRY J
IPC: C07C213/04
Filed: 1994-09-29
Granted: 1999-07-20
Abstract: A method for scavenging mercaptans in a hydrocarbon fluid is disclosed.  According to the method, an effective mercaptan-scavenging amount of an aqueous scavenging composition is added to the fluid.  The composition comprises a quaternary ammonium hydroxide of the formula R1R2R3R4NoH.  R1 and R2 are, independently, alkyl groups of from one to about eighteen carbon atoms, aryl groups of from six to about eighteen carbon atoms or alkylaryl groups of from seven to about eighteen carbon atoms.  R3 is an alkyl group of from two to about eighteen carbon atoms, an aryl group of from two to about eighteen carbon atoms or an alkylaryl group of from four to about eighteen carbon atoms.  R2 and R3 may be joined to form a heterocyclic ring including the N and optionally an oxygen atom.  R4 is -(CH2CH2O)nH, wherein n is an integer from one to about eighteen, or -CHR5CHR6Y, wherein R5 and R6 are, independently, hydrogen, alkyl groups of from one to about eighteen carbon atoms, aryl groups of from six to about eighteen carbon atoms or alkylaryl groups of from seven to about eighteen carbon atoms.  Y is a non-acidic group.  Related compositions and methods are also disclosed.
Patent CA-2140007-C (CA)
Title: Universal remote control with function synthesis
Inventor: DARBEE PAUL V
IPC: H04N5/44
Filed: 1993-07-13
Granted: 2003-10-21
Abstract: The universal remote control (10) comprises a light emitting device (LED 1, LED 2, LED 3); electrical circuitry (42) including: a CPU (56); structure for communicating code generation sequences to the CPU (56); driver circuitry coupled between the CPU (56) and the light emitting device (LED 1, LED 2, LED 3, and LED 4); a memory device (54) for storing in-formation therein coupled to the CPU (56); program instructions stored in the memory device (54); function code data for generating light on-light off codes for causing a controlled apparatus to perform a specific function stored in the memory device (54); and, structure associated with the memo-ry device (54) and the CPU (56) for determining when a "code generate command" sequence has been received and for using the sequence pro-vided for creating a specific light on-light off code to cause a controlled ap-paratus to execute a specific function, and for energizing the driver circuitry to cause the light emitting device (LED 1, LED 2, LED 3) to emit the spe-cific light on-light off code.
Patent CA-2141977-C (CA)
Title: Apparatus for polishing end surface of optical fibers
Inventor: TAKAHASHI MITSUO
IPC: G02B6/00
Filed: 1995-02-07
Granted: 2002-09-10
Abstract: An apparatus for simultaneously or selectively grinding ends of a plurality of optical fibers held by optical fiber end devices such as connectors including ferrules.  The apparatus has a holder plate having a plurality of types of supporting structures for fixing and supporting a plurality of types of optical fiber end devices with optical fibers connected thereto.  Spring or weights are used for urging ends of the optical fibers on the optical fiber end devices supported by the supporting structures.  A circular-path-based relative motion is caused to occur between the holder plate and the grinding plate. Each of the optical fiber end devices is a connector including a ferrule.  In such a case, the plurality of types of optical fiber end devices may be connectors whose end surfaces are to be ground at different angles or may be the connectors of different connection types.          The circular-path-based relative movement has a rotation component which is rotation of the holder pate about its own axis and a revolution movement which is revolution of the axis of the holder plate. The supporting structures of each type are preferably arranged on a circle concentric with the axis of the holder plate and preferably at a constant angular interval.
Patent CA-2142678-C (CA)
Title: Enteral composition comprising native micellar casein
Inventor: JOST ROLF
IPC: A61P3/02
Filed: 1995-02-16
Granted: 2008-12-16
Abstract: An enteral composition essentially containing native micellar casein as its protein source is prepared by microfiltration and optionally subsequent dia-filtration of skimmed milk.   The micellar casein advantageously replaces casein-ates in enteral nutrition by virtue of its low viscosity, its resistance to sterilization and its organoleptic qualities in a high protein concentration of the enteral composition.