baber/WOPTO huggingface dataset:
Patent CA-2010004-C (CA)
Title: Impedance matching circuit
Inventor: DISSER ROBERT J
IPC: G05F1/656
Filed: 1990-02-15
Granted: 1994-02-01
Abstract: IMPEDANCE MATCHING CIRCUIT          Abstract of the Disclosure The disclosure describes an impedance matching circuit for maintaining the input impedance, of a drive transistor as sensed by a driver circuit, substantially constant.  The circuit is connected to the input of the drive transistor such that when the drive transistor is forward biased, the input impedance sensed by the driver circuit is the input impedance of the drive transistor, and when the drive transistor is reverse biased, the input impedance sensed by the driver circuit is the combination of the input impedance of the drive transistor and an impedance of the matching circuit.
Patent CA-2022827-C (CA)
Title: Control of corrosion in aqueous systems using certain phosphonomethyl amines
Inventor: HWA CHIH M
IPC: C02F5/10
Filed: 1990-08-07
Granted: 2000-03-28
Abstract: This invention relates to a method for preventing corrosion and inhibiting the formation of scale deposition in aqueous systems. More specifically, it relates to using certain calcium insensitive phosphonomethyl amine compounds having the formula:   (see formula I) wherein either R1 is selected from hydrogen, hydrocarbyl, hydroxy-substituted hydrocarbyl, alkoxy-substituted hydrocarbyl; and R2 is selected from hydrocarbyl, hydroxy-substituted hydrocarbyl, alkoxy-substituted hydrocarbyl, carboxyl-substituted hydrocarbyl, -CH2PO3H2, and -C2H4N(CH2PO3H2)2; or R1 and R2 together form an alicyclic ring having 3 to 5 carbon atoms, optionally along with oxygen atoms, phosphorus atoms or both oxygen and phosphorus atoms in the ring, and water soluble salts thereof.
Patent CA-2024085-C (CA)
Title: Volatile attractants for diabrotica species
Inventor: METCALF ROBERT L
IPC: A01M1/20
Filed: 1990-08-27
Granted: 1997-02-11
Abstract: The compounds 4-methylphenylethanol, 4-chlorophenylethanol, 4-fluorophenylethanol, phenylethanol, phenylpropanol, 4-methoxyphenylethanol, 3-methoxyphenylethanol, 2-methoxyphenylethanol, 4-methoxyphenylpropanol, phenylethylamine, and phenylpropylamine may be used as attractants for northern corn rootworm or in combination with diabroticides and Diabrotica species non-volatile compulsive feeding stimulants as toxic bait for northern corn rootworm.
Patent CA-2027732-C (CA)
Title: Connector for interconnecting optical fiber cable ribbons
Inventor: BORTOLIN BRUNO
IPC: G02B6/38
Filed: 1990-10-16
Granted: 1997-01-07
Abstract: A pair of interengageable connectors for interconnecting optical fiber tape or ribbon cables which have a plurality of parallel optical fibers within a relatively thin and wide covering.  Each connector has a ferrule formed by semi-cylindrical elements with engaging and axially extending planar faces.  One end of the elements is a coupling face, and the planar faces have grooves extending axially from the coupling face for receiving the fibers with the covering removed and a recess remote from the coupling face for receiving the fibers with the covering thereon.  The elements are held together by a sleeve which extends from at or adjacent the coupling face toward the other end of the ferrule.  A ring nut with teeth for engaging corresponding teeth of the other connector encircles the sleeve and the ferrule and is slidable axially with respect thereto.  A spring urges the ring nut toward the end of the ferrule remote from the coupling face.  The assembled elements have axially extending holes receiving alignment pins.
Patent CA-2028287-C (CA)
Title: Benzocycloalkylaminopyridinamines and related compounds, a process and intermediates for their preparation and their use as medicaments
Inventor: EFFLAND RICHARD CHARLES
IPC: A61K31/47
Filed: 1990-10-23
Granted: 2001-04-03
Abstract: Benzocycloalkylaminopyridinamines and related compounds, a process and intermediates for their preparation and their use as medicaments There are described compounds of the formula, (see formula I) where R is hydrogen, loweralkyl, arylloweralkyl or loweralkylearbonyl; k is 0 or 1; m is 1, 2 or 3; k+m is 2 or 3; and n is 0 or 1; which compounds are useful as topical antiinflammatory agents for the treatment of various dermatoses , intermediates thereof and a process for their preparation.
Patent CA-2030880-C (CA)
Title: Dental prophy angle
Inventor: FALCON CHARLES J
IPC: A61C3/06
Filed: 1990-11-26
Granted: 2001-08-21
Abstract: A prophy angle having a single snap-in retention mechanism that is integral with the housing for re-taining the prophy cup rotating member in permanent field position and providing good smooth rotation per-formance and a detent drive shaft snap-in retention mechanism that locks in position when the dental hand-piece is connected.
Patent CA-2031375-C (CA)
Title: Adjustable diaper
Inventor: QUADRINI GIUSEPPE
IPC: A61F13/15
Filed: 1990-12-03
Granted: 1992-06-04
Abstract: An adjustable diaper is provided with a pair of VELCRO tapes  on the inner and outer surfaces of the upper ledge of the front lap extending along  an adjacent the upper edge thereof.  A strip of cloth is fixed to the upper edge of the front lap and is adapted to cover alternately one or the  other of the above-mentioned VELCRO tapes. The VELCRO tape on the outer  surface of the diaper is used to obtain a larger size diaper while the strip of cloth covers the VELCRO tape on the inner face. For smaller size diaper, the strip of cloth is flipped from the tape on the inner face to the tape on the outer face to uncover the tape on the inner face.  The upper  ledge of the front lap is subsequently folded to  forwardly  expose the tape on the inner face.     The  diaper is size adjustable and the strip of  cloth  prevents the inner VELCRO tape to come in contact tact with the skin.
Patent CA-2038043-C (CA)
Title: Apparatus and method for adaptively compressing successive blocks of digital video
Inventor: KRAUSE EDWARD A
IPC: H04N7/50
Filed: 1991-03-12
Granted: 1995-07-18
Abstract: The compression of successive blocks of digital data is optimized by selecting between different compression algorithms or different data formats on a block-by-block basis.  In one application, digitized interlaced video signals are processed for transmission in a compressed form.  A set of pixel data presented in a field format is compressed to provide a first compressed video signal.  The set of pixel data is also presented in a frame format and compressed to provide a second compressed video signal.  Errors are evaluated in the first and second compressed video signals.  The compressed video signal having the least error is selected for further processing.  The technique is repeated for successive sets of pixel data and the selected signals are encoded to identify them as field formatted or frame formatted signals.  The encoded selected signals are then combined to provide a compressed video signal data stream for transmission. Apparatus for receiving and decoding the signals is also disclosed.
Patent CA-2039335-C (CA)
Title: Viscera puller
Inventor: COBB GEORGE
IPC: A22C21/06
Filed: 1991-03-28
Granted: 1996-03-05
Abstract: A method and apparatus for removing viscera from poultry carcasses during processing is described.  The method and apparatus are designed to be used in situations where the carcasses have undergone evisceration and the viscera have been inspected for determination of diseased birds.    The device  of the present invention comprises a frame which has a tilting means mounted thereon to tilt the carcasses so that the viscera hang sufficiently away from the carcasses to allow them to be mechanically grasped.          A grasping means is mounted on the frame for grasping the viscera after the carcasses are tilted, and a pulling means is mounted on the frame for pulling the grasped viscera from the carcasses.  In a  preferred  embodiment  of  the  invention,  the  tilting  means comprises at least one guide bar, disposed in such a manner that as the carcasses move along on the shackle line, they strike the guide bar and are tilted.  The grasping means of the preferred embodiment of the invention comprise a pair of side-by-side,  spaced apart rails,  the distance between which progressively decreases along their length to the point that viscera may be substantially grasped between the rails.  The pulling means comprise a pair of side-by-side, spaced apart rails, which rails progressively slope away from the shackle line along their length to the point that when the viscera of the carcasses are grasped by the rails and the carcasses continue to move along on the shackle line, the viscera will be pulled from the carcasses by the rails progressively sloping away from  the shackle line.
Patent CA-2042617-C (CA)
Inventor: KUMAMOTO CHIAKI
IPC: G06F15/16
Filed: 1991-05-15
Granted: 1995-07-11
Abstract: In a multiprocessor system, a table is created for each multitask job in the main memory.  The table contains a first memory field for storing a task count value "m", second memory fields respectively identified by successive task count values for storing data respectively indicating the execution start times of "m" simultaneously executed tasks, and third memory fields respectively identified by successive task count values for storing run times of "m" or more simultaneously executed tasks.   In response to the roll-in of a given task, the task count value is incremented by 1, and real time data indicated by a system timer is stored into the second memory field identified by the task count value, allowing the selected task to be processed.  At the end of the processing of any task,  a difference is derived between real time data indicated by the system timer and an execution start time stored in the second memory field identified by the task count value.  The difference is then summed with a run time previously stored in the third memory field identified by the task count value to produce a sum, the sum being stored back into the third memory field overwriting the previous run time.  The task count value in the first memory field is decremented by 1 to allow the task to be rolled out.  Differences are derived between run times stored in successive third memory fields.
Patent CA-2043896-C (CA)
Inventor: AGRAWAL RAKESH
IPC: F25J3/04
Filed: 1991-06-05
Granted: 1994-05-03
Abstract: ABSTRACT   This invention relates to a cryogenic process for the separation of air utilizing an integrated multi-column distillation system wherein a nitrogen rich, oxygen rich and argon rich product are generated.  In the cryogenic distillation separation of air, air is initially compressed, pretreated and cooled for separation into its components.  Moderate pressure, e.g., 25-80 psia nitrogen is generated with enhanced nitrogen product purity and greater recovery of both nitrogen and argon by effecting a high boil-up rate in the bottom of the lower pressure column, thereby creating a reduced liquid flow/vapor flow ratio (L/V) and utilizing a higher than customary nitrogen reflux to the top of the lower pressure column, where the concentration of oxygen in nitrogen is less than about 10 ppm by volume or the nitrogen purity is at least about 99.5% by volume. Refrigeration to drive the system is obtained by recovering the energy from the waste nitrogen stream and oxygen vapor from the lower pressure column. A second method for obtaining refrigeration is to withdraw oxygen as a bottoms liquid from the lower pressure column, expanding that liquid to a lower pressure and using it to condense the nitrogen vapor generated in a higher pressure column which has been expanded in a turbo-expander to provide the refrigeration.
Patent CA-2050395-C (CA)
Title: Automation of telephone operator assistance calls
Inventor: DOWDEN DOUGLAS C
IPC: H04M3/527
Filed: 1991-08-30
Granted: 1995-03-14
Abstract: This invention relates to methods and apparatus for automatically processing operator assistance calls. A caller is connected to an automated operator position. The automated position has speech recognition facilities to replace those of an operator, has announcement capabilities to replace those of an operator, and has control means for transmitting and receiving the same set of messages transmitted and received by an operator position. Advantageously, the operator assistance switch has the same interface to an automated position as to an operator position and interacts with the two identically. Since the capabilities of the automated position are limited by its program, the automated position switches a call to an automated position when a situation occurs for which it has not been programmed. Advantageously, a switch need not be specially programmed to communicate with an automated position. Advantageously, new operator assistance services can be provided automatically without rewriting the complex control software of the switch.
Patent CA-2050571-C (CA)
Title: Isdn line circuit monitor system
Inventor: ORITA AKIRA
IPC: H04M3/24
Filed: 1991-09-03
Granted: 1997-01-28
Abstract: In an ISDN line circuit channel monitor system having a digital line circuit controller, a line circuit network and a call processor accommodating network, there are provided monitor equipment and a connection making part.  The monitor equipment is coupled to the digital line circuit controller, the first network or the second network, and monitors D and B channels of a basic interface and a primary rate interface.  The connection making part connects to the monitor equipment time slots related to a monitored channel of a terminal in conformity with either the basic interface or the primary rate interface.
Patent CA-2050703-C (CA)
Inventor: GOGOLEWSKI SYLWESTER
IPC: A61B17/64
Filed: 1991-09-05
Granted: 2002-11-12
Abstract: Disclosed is a thin, resorbable bone regeneration membrane containing interconnected micropores and having a thickness between 0.05 mm and 5.0 mm, the membrane comprising resorbable or degradable polymeric and/or polymeric-ceramic material wherein the glass transition temperature of the polymeric material is in the range of body temperature to 200°C and the molecular weight distribution of the polymeric material is in the range of 1.2 to 100Ø
Patent CA-2051326-C (CA)
Title: Device for automatic regulation of the process of separating froth concentrate from gangue in a floatation machine
Inventor: ZLOBIN MIKHAIL N
IPC: B03D1/14
Filed: 1991-09-13
Granted: 1998-11-17
Abstract: The automatic regulator device comprises a channel for measuring the level and density of pulp in the chamber of a floatation machine, in which two bubbling pipes are in communication with a differential pressure pickup connected to the input of a frother flow-rate regulating channel and to one input of a correction unit whose other input is connected to a pressure pickup communicating with one of the bubbling pipes. The output of the correction unit is connected to the input of a circuit designed to regulate the rate of flow of water with frother in a pulp level stabilizing channel, the output of said circuit being connected to an actuator valve installed on a Pipeline feeding water with frother and furnishing a control signal with respect to a pulp level deviation from a preset value. A water-and-frother flow transducer is connected to the input of a circuit designed to regulate the gangue discharge rate in the pulp level stabilizing channel, the output of said circuit being connected to the drive of the actuator valve installed on a gangue discharge branch pipe, said output developing a control signal with respect to a deviation of the water-and-frother flow rate from a preset value.
Patent CA-2051419-C (CA)
Title: Device for use in real-time monitoring of human or animal bodily functions
Inventor: HILL ADRIAN ROBERT
IPC: A61B5/022
Filed: 1990-04-26
Granted: 2000-01-18
Abstract: The device comprises a scleral contact lens (1) for locating and supporting the device on the eye and has an optical system with at least one discrete light source, e.g. an optical fibre (9) or a light emitting diode, and at least one discrete light receiver, e.g. an optical fibre (10) or a photodetector, mounted within a carrier (6) on the scleral contact lens (1). The device may be used for spectrophotometric analysis of the retina (31) enabling it to be used in a mide variety of diagnostic and monitoring techniques. In a further arrangement (Figs 3 and 6) the device may be used to provide infra-red pupillometry. Further sensing devices may also be provided on the contact lens (1).
Patent CA-2052657-C (CA)
Title: Electrosurgical laparoscopic cauterization electrode
Inventor: FAN PETER
IPC: A61B18/14
Filed: 1991-10-02
Granted: 1998-08-25
Abstract: A laparoscopic cauterization electrode for connection to a source of appropriate electrical power for performing deep surgical operations through an opening in a body such as  deep  thorax,  abdominal  perineal,  deep  rectum,  deep gynecological and similar deep body operations, comprising an electrically conductive electrode shaft of a width sized for insertion through the body opening having a proximal and a distal end, the proximal the of said electrode adapted for electrical connectivity to the  power source and the distal end having teflon-coated operative tip associated therewith, insulation  for  providing  both electrical  and  thermal insulation and abrasion resistance along the electrode shaft between the  proximal and distal ends of the electrode and the electrode shaft being of a sufficient length to extend from the exterior into the interior of a body for performing the deep surgical operations.
Patent CA-2059435-C (CA)
Title: Induction system for snowmobile
Inventor: TANAKA HIROSHI
IPC: B62M27/02
Filed: 1992-01-15
Granted: 2003-11-25
Abstract: An induction system for the internal combustion engine of a snowmobile that includes first and second air filters the first of which is disposed within the engine compartment and is not readily viewed by the operator and the second of which is disposed so that it can be viewed externally from the engine compartment for the operator to determine if it has been clogged with snow and requires servicing. In addition, a portion of the air flowing to the engine is heated by passing it through the engine compartment while another portion is direct atmospheric air for controlling the temperature of the air delivered to the engine without large temperature variations to insure better running under all ambient conditions.
Patent CA-2060485-C (CA)
Inventor: CADOSSI RUGGERO
IPC: A61B5/276
Filed: 1992-01-31
Granted: 2003-01-07
Abstract: A device comprising a portable generator for generating a predetermined signal and having an output connected to a first transducer for transmitting the above signal to the body of a first operator (e. g. physician, nurse, etc.); and processing means for analyzing a signal picked up by a second transducer on a second operator (e.g. a patient, etc.) and detecting the significant presence of the above predetermined signal, as a consequence, for example, of direct or indirect contact between the first operator and the second operator.
Patent CA-2063123-C (CA)
Title: Method for producing hydrogen peroxide
Inventor: NAGASHIMA HIROMITSU
IPC: C01B15/029
Filed: 1992-03-16
Granted: 1996-12-10
Abstract: A method for producing a high concentration of hydrogen peroxide by reacting oxygen and hydrogen directly in a reaction medium containing a promoter such as a halogen containing compound using a platinum group metal catalyst supported on a solid acid carrier or a solid super acid carrier.
Patent CA-2066364-C (CA)
Title: Psychoactive propargylamine derivatives
Inventor: SALVADOR ROMANO
IPC: A61K31/13
Filed: 1992-04-16
Granted: 1999-01-26
Abstract: Propargylamine derivatives having the general formula:       wherein R is a hydrogen atom, an unsubstituted phenyl group  or  a  phenyl  group  substituted  with  halogen, trifluoromethyl,  lower alkoxy,  nitro,  cyano,  amido or N,N-di(lower alkyl)amido, R1, R2 or R3 are the same or different and each represent a hydrogen atom or a lower alkyl group, R4 is a hydrogen atom or a lower alkyl, benzyl, phenethyl or furyl group, or R3 and R4 together with the nitrogen atom to which they are attached form a piperidinyl group, with the proviso that when R is a hydrogen atom, R1 represents a hydrogen atom or a lower alkyl group and R2 represents a lower alkyl group, and their pharmaceutically acceptable acid addition salts, have  been  found  to  be  useful in  the  treatment  of anxiety,  psychotic states and aggressive behavior in affected animals.
Patent CA-2069142-C (CA)
Title: Digital class receiver
Inventor: TULAI ALEXANDER F
IPC: H04L27/14
Filed: 1992-05-21
Granted: 1996-04-02
Abstract: A class message receiver that in one embodiment can be implemented in a Digital Signal Processor.  An FSK demodulator takes input linear samples of the signal and filters them with a bandpass filter which does an upsampling to increase the sampling rate from 8,000 Hz to 24,000 Hz, which results in 20 samples at the output of the bandpass filter for each incoming data bit.  The amplitude of the signal/samples at the output of the bandpass filter is adjusted by an automatic gain control (AGC) circuit and the resulting samples (for convenience referred as sample (t), where t is a discrete moment in time) are processed along two different paths designed to estimate the likelihood of the input signal encoding a mark (mark estimation path) or a space (space estimation path).
Patent CA-2069713-C (CA)
Title: Carbon dioxide in neutral and alkaline sizing processes
Inventor: HORNSEY DEREK
IPC: D21H21/16
Filed: 1992-05-27
Granted: 2003-05-13
Abstract: In the nan-acidic sizing of paper reaction between alkylketene dimer sizing agent and cellulose of cellulosic paper-making fibers is catalyzed by dissolving carbon dioxide in an aqueous vehicle of an aqueous pulp of the paper-making fibers; the carbon dioxide provides bicarbonate ions which catalyse the reaction; the bicarbonate ions may be generated by dissociation of the carbon dioxide in water, ar by reaction of the carbon dioxide with calcium carbonate incorporated in the pulp as a filler for the paper, or with some other alkali present.
Patent CA-2069933-C (CA)
Title: Etching solution containing a vanadium catalyst
Inventor: LINDINGER BERND
IPC: C23F1/02
Filed: 1991-06-22
Granted: 2000-06-20
Abstract: An electrolytically reclaimable etching solution for etching circuit boards and mold parts of copper and copper-based alloys, with a content of copper tetrammine sulfate, ammonia, ammonium sulfate, ammonium chloride, if necessary ammonium nitrate, and also a catalyzer for raising the etching rate. According to the invention, such an etching solution excels through a content of vanadium or a vanadium compound as a catalyzer in a concentration of 1 mg to 99 mg/l of etching solution, calculated as vanadium.
Patent CA-2072815-C (CA)
Title: Narrow band incoherent optical carrier generator
Inventor: HUBER DAVID R
IPC: H04B10/43
Filed: 1992-06-30
Granted: 1997-09-02
Abstract: A narrow bandwidth incoherent optical source is provided.  A superluminescent source includes a gain medium having an input end and an output end.  The input end of the gain medium is optically coupled to a reflector to cause spontaneous emissions within a predetermined band exiting the input of the gain medium to be reflected back into the medium. Spontaneous emissions outside of the predetermined band are lost.  The gain medium can comprise a doped fiber, such as an Erbium doped fiber.  An optical isolator prevents the superluminescent source from lasing.  By providing a plurality of reflectors operating in different bands, the superluminescent source can generate a plurality of optical carriers.