baber/WOPTO huggingface dataset:
Patent CA-2002649-C (CA)
Title: Cardioprotective tocopherol analogs
Inventor: PETTY MARGARET
IPC: A61K31/355
Filed: 1989-11-09
Granted: 2000-06-06
Abstract: This invention relates to alkylamino alkylene derivatives of certain 2H-1-benzopyrans, to the intermediates and processes useful for their preparation, to their free-radical scavenger and cellular protective properties and to their end-use application as therapeutic agents.      More specifically this invention relates to alkylamino alkylene derivatives of the formula   the (R) and (S) enantiomers and racemic mixtures thereof, and the pharmaceutically acceptable salts thereof wherein Q is N~R1R2R3.X~, X is a halide or OS(O)2R4, with R4 being H, C1-6 alkyl, aryl or aralkyl, R1, R2 and R3 each individually are a C1-6 lower alkyl, R5 is H or C1-6 alkyl, R6 is H or -C(O)R, R being H or C1-9 alkyl, R7 is H or C1-6 alkyl, R8 is H or C1-6 alkyl and n is an integer of 1 to 6.
Patent CA-2018450-C (CA)
Title: Fiber optic apparatus for use with medical lasers
Inventor: EBLING WENDELL V
IPC: G02B6/00
Filed: 1990-06-07
Granted: 1995-05-09
Abstract: An optical apparatus functions as a laser catheter for removal, penetration or treatment of human tissue or other biotic material.   The arrangement of the optical components, including the focal length of the lens and the spacing between the lens and the source of light is selected to yield an output beam having advantageous characteristics which are particularly suitable for medical laser treatment. Such characteristics include a relatively long beam throw, a long focal range, and a small output beam waist.  A hollow tip, preferably conical in shape, is utilized to provide a tactile indicator as to the cutting action of the output beam.
Patent CA-2020333-C (CA)
Title: Pliant media blasting method and apparatus
Inventor: LYNN WILLIAM R
IPC: B24C7/00
Filed: 1990-07-03
Granted: 2001-05-29
Abstract: The invention relates to a method and to a pliant particulate media device for the same which includes an air source for supplying air pressure to a supply container, containing a quantity of pliant blasting media, and a discharge line. The container is connected with a mechanical feed device that positively meters out a desired quantity of blasting media into a discharge line which conveys the blasting media to a discharge nozzle where it is discharged against a surface to be treated to achieve the desired treatment. The invention additionally relates to a recovery system for separating the pliant blasting media from the debris and the other unwanted materials and a system for removing undesired liquids and chemicals from the pliant blasting media after use,
Patent CA-2025336-C (CA)
Title: Cell transfer apparatus and method using a variable rate codec
Inventor: NUNOKAWA MASAKATSU
IPC: H03M7/40
Filed: 1990-09-13
Granted: 1994-12-13
Abstract: ABSTRACT OF THE DISCLOSURE       A cell transfer apparatus and method using a varia-ble rate codec wherein a sequence number of each cell is determined by adding a weight corresponding to an encoding time of information.  In a transmitting side, each of encod-ed pieces of information is cellulated  to a predetermined length cell for each information having  a length of integer times a predetermined unit length of information.   A se-quence number of a next cell is determined by adding as a weight the number of pieces of information having a unit length included in the last cell to a sequence number of a last cell, and is sent as being added to each cell.   In a receiving side,  reproduction timing numbers comprising serial numbers are sequentially generated at timings syn-chronous with the unit length of the pieces of information and compared with the sequence number added to each cell.          When the both coincide, the information of that cell is decoded.
Patent CA-2025338-C (CA)
Title: Feedback control system
Inventor: KUROSAWA RYOICHI
IPC: G05B11/36
Filed: 1990-09-13
Granted: 1995-07-18
Abstract: A control computation unit includes a delay element in addition to an integrating element and a proportional element.  The delay time of this delay element is selected, following the time necessary for due settling (namely, the time required for rendering a controlled variable to follow changes in a control variable command), or the time necessary to restore the controlled variable to the control variable command when a controlled object involved has incurred a certain external disturbance.  In case there exist a computation delay time, a dead time, and/or a detection delay time, respectively in the control computation unit, controlled system, and/or a control variable detector, then the delay time is selected equal to one of the computation delay time, dead time, and the detection delay time, or the sum of these times.  Additional provision of the delay element with a delay time equal to the time desired for due settling to the control computation unit results in settling within the time equal to the time desired for due settling the response.
Patent CA-2030280-C (CA)
Title: Molybdenum sulfur antiwear and antioxidant lube additives
Inventor: COYLE CATHERINE L
IPC: C10N30/12
Filed: 1990-11-19
Granted: 2000-10-03
Abstract: In accordance with this invention, there is provided a lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of an additive having the formula Mo2L4 wherein L is a ligand selected from xanthates and mixtures thereof and, in particular, xanthates having a sufficient number of carbon atoms to render the additive soluble in the oil. In general, the xanthate ligand, L, will have from about 2 to 30 carbon atoms.
Patent CA-2041987-C (CA)
Title: Optical disk drive
Inventor: NAOKI GORO
IPC: G11B7/12
Filed: 1991-05-07
Granted: 1995-06-06
Abstract: An optical disk drive of the type having a fixed optical unit (13) having a light transmitting hole (19) from which a laser beam is emitted, and a movable head (14) having a light receiving hole (20) from which the laser beam is received, wherein the respective outer edges of the light emitting and receiving holes (19, 20) are surrounded by a pair of annular projections (21).  The annular projections (21) are engageable with each other to provide a seal there-between when the head (14) is displaced toward the fixed optical unit (13).  The annular projections (21) are prefer-ably made of a cushioning material in which instance they also serve as a cushioning or shock-absorbing member.                        (Fig. 1)
Patent CA-2042808-C (CA)
Title: Method of extracting particular nucleic acid fragment
Inventor: KISHIMOTO TOSHIHIKO
IPC: C12N15/10
Filed: 1991-05-16
Granted: 2000-04-25
Abstract: A method of extracting a particular nucleic acid fragment containing a nucleic acid sequence of interest from a nucleic acid or nucleic acids mixture, comprising the steps of: (1) digesting the nucleic acid or nucleic acids mixture with restriction enzymes to obtain a mixture of nucleic acid fragments, said restriction enzymes consisting of (A) two different enzymes capable of producing the particular nucleic acid fragment bearing predetermined and distinct restriction ends on its 5' and 3' terminals and (B) one or more restriction enzymes different from (A), for which the particular nucleic acid fragment contains no relevant restriction sites; (2) preparing two distinct DNA linkers capable of binding to the respective restriction ends of the particular nucleic acid fragment; (3) contacting the linkers and nucleic acid fragments under conditions sufficient to ligate complementary ends of the linkers and nucleic acid fragments; (4) subjecting the resulting reaction mixture to a first hybridization with an immobilized probe complementary to one of the linkers; (5) isolating the hybridized nucleic acid fragment from the probe; (6) subjecting the isolated nucleic acid fragment to a second hybridization with an immobilized probe complementary to the other linker; and (7) isolating the hybridized nucleic acid fragment from the probe.
Patent CA-2043504-C (CA)
Title: High enthalpy plasma torch
Inventor: TSANTRIZOS PETER G
IPC: H05B7/18
Filed: 1991-05-29
Granted: 1995-01-17
Abstract: A plasma torch comprises a torch housing, rear and front tubular electrodes coaxially mounted within such housing with a gap therebetween, both electrodes being fabricated  from  copper  having  tubular  inserts  of refractory material, a vortex generator for introducing a tangential flow of gas in opposite direction into the tubular  electrodes  through  the  gap  between  the  two electrodes, and a cooling system for cooling the tubular electrodes.
Patent CA-2048130-C (CA)
Inventor: KINGMAN KEVIN P
IPC: C09D11/00
Filed: 1991-07-30
Granted: 1996-11-26
Abstract: An article of manufacture comprising a substrate and a water-based ink affixed thereto wherein, the water-based ink which is water-resistant upon curing, and a method of disposing the water-based, water-resistant ink on substrates. The article of manufacture comprises, in an uncured condition: from about 5 to about 99 weight percent of a water resistance agent having a glass transition point of about minus 40°C to about 30°C: from about 1 to about 85 weight percent of a blocking agent having a glass transition point of about 30°C to about 100°C: an effective amount of a coloring agent capable of providing color to the composition; and means for maintaining a basic pH in the composition, with the proviso that the water-based ink composition in the uncured state is substantially free of a hydrocarbon solvent.
Patent CA-2049422-C (CA)
Inventor: REYNOLDS ALAN C
IPC: B66B5/24
Filed: 1991-08-16
Granted: 1993-12-21
Abstract: ABSTRACT OF THE DISCLOSURE         A  method  and  apparatus are  disclosed  for  the retrofit installation of an auxiliary hoist rope brake on an existing elevator hoist system.   The apparatus includes a frame which supports  the  existing elevator hoist  in  an elevated position with respect to its original foundation, and which supports the hoist rope brake in operative relation to the elevator hoist ropes.
Patent CA-2050024-C (CA)
Title: Improved aqueous emulsion dispersion adhesives based on a polyol and a hindered isocyanate compound
Inventor: RYAN CHRISTOPHER M
IPC: C08L63/00
Filed: 1991-08-27
Granted: 1999-05-11
Abstract: Improved polymeric aqueous adhesive dispersions can be made based on a reaction between a nonionic or anionic functional polyol and an aliphatic hindered isocyanate compound.  The aqueous adhesive dispersion substantially free of reactive NCO functionality can be used in the preparation of laminates formed by adhering one sheet like substrate to another.  The formulations disclosed process easily, have low prepolymer viscosity, bond laminate structures and have a commercially useful pot life.
Patent CA-2053288-C (CA)
Title: Expression of human apolipoproteins ai and ai-milano in yeast
Inventor: SIDOLI ALESSANDRO
IPC: C12N15/81
Filed: 1990-04-17
Granted: 2006-06-06
Abstract: An expression vector capable of expressing, in a transformed yeast, apolipoprotein AI and mutant apolipoprotein AI-M (Milano) is described. Yeast strains, namely of S.cerevisiae, transformed by said vectors, produce the protein which may be conveniently purified and used for the treatment of atherosclerosis and cardiovascular diseases.
Patent CA-2055529-C (CA)
Title: Microbicidal compositions
Inventor: STECK BERNHARD
IPC: A01P3/00
Filed: 1991-11-14
Granted: 2002-11-12
Abstract: The combination of the plant microbicide 4-(2,2-difluoro-1,3-benzodioxol-7-yl)-1H-pyrrole-3-carbonitril with the plant microbicide a-[2-(4-chlorophenyl)ethyl]-.alpha.-(1,1-dimethyl-ethyl)-(3-(1H-1,2,4-triazolyl)-1-ethanol results in a synergistically enhanced effect in the control of plant diseases. Microbicidal compositions based on such combinations are suitable for treating natural products of vegetable and animal origin and; in particular, for seed treatment.
Patent CA-2058264-C (CA)
Title: Dihydrobenzofuran carboxamides and process for their preparation
Inventor: MARCHI MARCELLO
IPC: A61P25/18
Filed: 1991-12-20
Granted: 1999-03-16
Abstract: A compound of formula (I)             (I) wherein A is a substituent selected from the group consisting of a)     ; b)   ;  c)    and d)   wherein R' is hydrogen or methyl, m is zero or 1 and the symbol ~ means that the azabicyclic rings may be in the ~ or the ~ orientation, and the pharmaceutically acceptable salts thereof, are useful in treating CNS disorders, gut motility disorders, and/or emesis and/or pain in mammals, and/or migraine.
Patent CA-2063722-C (CA)
Title: Magnetic recording on film of beyond camera exposure value range indication
Inventor: CLOUTIER ROBERT PAUL
IPC: G03B17/18
Filed: 1990-09-07
Granted: 1996-05-21
Abstract: The camera of the invention includes a magnetic recording head (30) adjacent the film (14) and a processor (32) which senses the lens focal length, the aperture size, the shutter speed and the film ISO number or film speed, and makes the following determinations: first, it determines from the scene brightness and film speed whether the ideal combination of shutter speed and aperture size, in terms of a required exposure value, falls within the range of maximum and minimum shutter exposure times and aperture sizes of which the camera is capable of providing, expressed in terms of a minimum camera exposure value and a maxi-mum camera exposure value. If the ideal exposure value for that scene falls outside the range of camera exposure values, then the processor causes a magnetic recording head (30) to magnetically record in or adjacent the current film frame a coded indication symbolic of the fact that the required exposure value was beyond the camera exposure value range.
Patent CA-2066371-C (CA)
Title: Refrigeration system consisting of a plurality of refrigerating cycles
Inventor: KITAGUCHI MASARU
IPC: F25B1/00
Filed: 1992-04-16
Granted: 1998-09-15
Abstract: The present inventions are intended to improve heat efficiency of a refrigeration system having plural refrigerating cycles of different evaporating or condensing temperatures typically used in breweries.        Each of main lines of different evaporating temperatures are connected with each of suction lines to a compressor respectively. to enable the system to save energy and to establish a back-up system of compressors.        A different condensing temperature system having a common refrigerant source is provided with refrigerant transferring means to transfer refrigerant from an refrigerant excess cycle to an refrigerant insufficiency cycle.        The refrigerating cycles are arranged in parallel and the evaporators are connected to form a liquid path,  through which a liquid stream flows in series to be chilled in the evaporators, as well as to form a refrigerant path for a refigerant stream of each rerigerating cycle,  individually. and further are arranged in order from a high evaporating temperature of refrigerant to low one along the liquid path from the upstream to the downstream.
Patent CA-2067074-C (CA)
Inventor: PAPENFUHS THEODOR
IPC: C07C63/68
Filed: 1992-04-24
Granted: 2003-06-24
Abstract: N'-substituted N-amino-3,4,5,6-tetrafluorophthalimides, and processes for their preparation Compounds of the formula (see figure I) in which X is the radical (see figure II) where R1 and R2 are in each case a hydrogen atom, an alkyl-(C1-C10) group, aryl group, alkyl(C1-C6)-CO group or aryl-CO group, where the aryl or aryl-CO group in the case of R1 and R2 can be substituted on the aromatic ring by fluorine and/or chlorine atoms and/or alkyl(C1-C4) groups, or R1 and R2 together are a phthaloyl radical which can be substituted on the aromatic ring by 4 chlorine atoms or 4 fluorine atoms, or where X is the radical (see figure III) which can be substituted on the aromatic ring by fluorine and/or chlorine atoms and/or alkyl(C1-C4) groups, and processes for their preparation.
Patent CA-2068735-C (CA)
Title: Heat resistant nonwoven fabric and process for producing same
Inventor: YOSHIDA MAKOTO
IPC: D04H1/58
Filed: 1991-08-21
Granted: 2000-01-11
Abstract: ABSTRACT OF THE DISCLOSURE      A heat resistant nonwoven fabric comprises 95 to 50% by weight of heat resistant fibers and 5 to 50% by weight of thermoplastic resin, the thermoplastic resin being in the form of pillar-shaped melt-bonding members located between the heat resistant fibers, to thereby bond the heat resistant fibers to each other therethrough, has an excellent heat resistance, formability and concealing effect, and a relatively low density, and is useful as an air filter and a covering sheet for heat resistant shaped articles.
Patent CA-2069392-C (CA)
Title: Process and apparatus for analysis of hydrocarbons by near-infrared spectroscopy
Inventor: MAGGARD STEVEN M
IPC: G01N33/28
Filed: 1992-05-25
Granted: 1995-12-12
Abstract: Certain selected  wavelengths in  the near infrared spectra permit analysis of weight percent,  volume percent, or  even   mole  percent  of  each  component,  e.g.  PIANO (paraffin, isoparaffin, aromatic, naphtenes,  and olefine), octane  (preferably  research,  motor or pump), and percent of various hydrocarbons, e.g. alpha olefins.   Analysis can be nearly  continuous analysis on-line or at-line, as well as batch  analysis, e.g.  in a  quality control laboratory. Preferably the NIR data is converted to a second derivative of the spectra and multiple linear  regression performed to model the  individual PIANO  concentrations, and to predict physical  properties  of  fuel  blending  components,  e.g. research octane of reformate, etc.
Patent CA-2072179-C (CA)
Title: Cryogenic rectification method for producing refined argon
Inventor: BIANCHI JOHN RICHARD
IPC: F25J3/04
Filed: 1992-06-23
Granted: 1996-11-12
Abstract: A cryogenic rectification method employing rectification over a defined height within the lower pressure column of a double column system which reduces the nitrogen concentration of an argon, nitrogen, oxygen mixture while maintaining the argon concentration at or near its maximum enabling production of nitrogen-free argon directly from the argon column system.
Patent CA-2076817-C (CA)
Title: Doppler ultrasound monitor system
Inventor: REYNOLDS CHARLES ANDREW
IPC: G01S15/58
Filed: 1992-08-25
Granted: 2001-12-11
Abstract: A multi-transducer Doppler ultrasound monitor system is disclosed in which a multiplexed switch is inter-posed between the ultrasound transducers and a single transmitter and receiver of the type utilized used to drive a single transducer and to process the signal produced by that transducer, respectively. This switch has a plurality of inputs,each of which receives a connection to one of the transducers, and a single output which is connected to the transmitter and receiver, and it is effective to connect each input, in sequence, to the output on a time-shared basis. A track & hold circuit is provided at the output of a demodulator following the receiver. This circuit has a single input and a plurality of outputs, each corresponding to one of the multiplex switch inputs. The track & hold circuit distributes the signal at the output of the demodu-lator in sequence to each of the circuit outputs. In this manner, a single set of electronics can be utilized for a plurality of transducers.
Patent CA-2077199-C (CA)
Title: Air conditioning system providing for individual work station control
Inventor: TAMBLYN ROBERT T
IPC: F24F3/00
Filed: 1992-08-31
Granted: 1997-08-19
Abstract: Disclosed is an air conditioning system which provides for controlling the flow of conditioned air from a duct to a predetermined location of an occupied area of a building.  A fitting is secured at one end thereof to the duct and has a moveable butterfly valve mounted therein for selectively controlling flow of conditioned air therethrough, the fitting including a motor and motor control relay for controlling operation of the valve.  An outlet is mounted in association with wall means adjacent the location and spaced from the fitting.  A flexible conduit is connected to another end of the fitting means and extends from the fitting means to and is connected with the outlet means.  A remote signal receiver is in electrical circuit with the motor means and motor control relay and is located to receive a transmitted signal and there is a remote controlled signal transmitter signal compatible with the receiver whereby an occupant in the location may remotely control through actuation of the transmitter, the position of the valve in the fitting means and thus control the flow of conditioned air through the outlet means to the location.
Patent CA-2078941-C (CA)
Title: Compound semiconductor device
Inventor: NAKAGAWA YOSHIKAZU
IPC: H01L21/338
Filed: 1992-09-23
Granted: 1997-01-21
Abstract: A compound semiconductor device includes an undoped semiconductor layer; a doped semiconductor layer formed on the undoped  semiconductor  layer  and  having  smaller  electron affinity than the undoped semiconductor layer, impurities being doped in the doped semiconductor layer; a gate electrode formed on the doped semiconductor layer; and a source electrode and a drain electrode respectively formed at both sides of the gate electrode, wherein an impurity concentration of the doped semiconductor layer is selected such that a portion of the doped semiconductor layer located immediately below the gate electrode is not completely depleted in a state in which a gate voltage is not applied to the gate electrode, and is completely depleted in a state in which a negative voltage for minimizing a noise figure is applied to the gate electrode.
Patent CA-2083713-C (CA)
Inventor: TSUTSUI KYOYA
IPC: G10L19/02
Filed: 1992-03-27
Granted: 2003-08-19
Abstract: An apparatus for compressing a digital input signal compresses a digital input signal arranged into frames of plural samples. The digital input signal is orthogonally transformed by plural orthogonal transform circuits in blocks derived by dividing the frames by a different divisor in each circuit. The resulting spectral coefficients are quantized using an adaptive number of bits. The output of one orthogonal transform circuit is selected based on the outputs of the orthogonal transform circuits. The digital input signal is divided into plural frequency ranges, and frames are formed in each range. A block length decision circuit determines division of the frames of each range signal into blocks in response to range signal dynamics.  The range signals are orthogonally transformed in blocks and the spectral coefficients are quantized. The apparatus also includes a frequency analyzing circuit that derives spectral data points from the input data, and groups them in plural bands. A noise level setting circuit finds the energy in each band and sets a allowable noise level in response to the band energy. A block floating coefficient calculating circuit calculates block floating coefficients based on the maximum spectral data point in each band. A quantizing bit number decision circuit determines the number of bits to use for quantizing in response to the allowable noise level and the block floating coefficients. A quantizing circuit quantizes the spectral data points in response to the quantizing bit number decision circuit.