baber/WOPTO huggingface dataset:
Patent CA-2017364-A1 (CA)
IPC: C09K21/02
Filed: 1990-05-23
Abstract: A flame-resistant non-drying putty composition is prepared by adding 2 to 20 parts by weight of an unvulcanized solid rubber, 10 to 50 parts by weight of a plasticizer, 300 to 800 parts by weight of a metal hydrate, 20 to 200 parts by weight of a foliated talc, and 0.5 to 5 parts by weight of an organic fiber to 100 parts by weight of one type of liquid resin having a viscosity of 5,000 to 200,000 centipoise at room temper-ature or a mixture of two or more types thereof and kneading the resultant mixture.
Patent CA-2017538-A1 (CA)
Inventor: GARCIA-HUIDOBRO GONZALO
IPC: B01J49/00
Filed: 1990-05-25
Abstract: ABSTRACT     The process of the invention is an adsorptive solute recovery from a dilute solution that, during elution of the adsorbent bed, stores for recycling donor and receiver portions of effluent from the bed that range in concentration from barren to just less than product concentration and just less than product concentration to barren, respectively.  The donor and receiver liquids are stored such that their solute concentration profiles as they leave the bed are maintained.  The donor liquid is recycled through the adsorbent bed just prior to elution while the bed is treated with the receiver liquid after elution.  Steady state operation is established after a number of loading and elution cycles, resulting in improved recovery of solute, reduced recycle rate  and lower adsorbent inventory requirements.     37,797-F
Patent CA-2018071-A1 (CA)
IPC: H04N1/053
Filed: 1990-06-01
Abstract: This  is  an electronic  scheme  for  correcting  for mechanical misalignment and chromatic  aberrations  from laser beam to  laser beam in the  scan direction of a multiple  beam  laser  scanning  system  for  use  in  an electrophotographic   machine.    Each  beam   is   first corrected for mechanical misalignment and thereafter for chromatic aberrations.  A reference laser beam produces two pulses near the start of scan (SOS) and two pulses near the end of scan (EOS).  A non-reference laser beam then  produces  SOS  and  EOS  pulses  from  which  the mechanical misalignment is calculated.  A gated clock is energized by the reference pulse and a tapped delay line is used for nanosecond resolution.  After accomplishing correction   for   mechanical   misalignment,   chromatic aberrations  are  corrected by measuring  the  amount  of total pel displacement of the non-reference  scan line relative  to  the  reference  scan  line  and  inserting appropriate delays at selected intervals throughout the non-reference  scan in order to maintain pel placement accuracy to a desired tolerance.
Patent CA-2018301-A1 (CA)
Title: Packet communication system and method of clearing communication bus
Inventor: SCHENKEL DAVID P
IPC: H04L12/417
Filed: 1990-06-05
Abstract: ABSTRACT             Apparatus and a method of communicating data signals on a bus having an upstream portion to which transmitters of a plurality of stations are connected, and a downstream portion to which receivers of the stations are connected, and to which an end station is connected having a transmitter connected more upstream than any of the plurality of stations. Signals to be transmitted from each of the plurality of stations are appended to the end of the data stream passing thereby.  A bus clear signal is transmitted from the end station, along the bus.  When any signal including the bus clear signal is detected from upstream at any of the plurality of stations that might be transmitting, transmission of signals from the plurality of stations is immediately terminated. Transmission of the bus clear signal from upstream thus clears the bus to allow for transmission of different priority signals on the bus.
Patent CA-2021547-A1 (CA)
Inventor: MCCARTHY JAMES R
IPC: A61P43/00
Filed: 1990-07-19
Abstract: This invention relates to novel 3-aryl and 3-heteroaryl-2-fluoro-1-olefins of the formula (I) and their pharmacological use as dopamine beta-hydroxylase DBH inhibitors in the treatment of DBH mediated conditions such as hypertension.
Patent CA-2023224-A1 (CA)
Title: Process for preparing 2-deoxy-2, 2-difluoroxylose analogs and intermediates therefor
Inventor: HERTEL LARRY W
IPC: C07H19/04
Filed: 1990-08-14
Abstract: ABSTRACT      The present invention provides a process and intermediates useful for inverting 2-deoxy-2,2-difluororibose analogs to 2-deoxy-2,2-difluoroxylose analogs.
Patent CA-2024494-A1 (CA)
Title: Material for molding printed circuit board and printed circuit board using said material
Inventor: NAKANO AKIKAZU
IPC: C08F12/00
Filed: 1990-08-31
Abstract: A material for molding printed circuit board, which is prepared by compounding 100 parts by weight of polymer composition consisting of 100 to 20 wt% of styrene polymers having a high degree of syndiotactic configuration (a) and 0 to 80 wt% of fibrous fillers (b) with 0 to 40 parts by weight of flame retardant (c) and 0 to 15 parts by weight of auxiliary flame retardant (d) , and a printed circuit board which is prepared by forming metallic foil on the molded product consisting of the material are disclosed.
Patent CA-2024626-A1 (CA)
Title: Polyimide membranes and their use for gas separation
Inventor: BURGOYNE WILLIAM F JR
IPC: C08G73/10
Filed: 1990-09-05
Abstract: ABSTRACT    The present invention is a class of polyimide membranes wherein the diamine portion of the polymer structure is formed from 2 5-di-t-butyl-1 4-phenylenediamine.  Membranes formed from polyimides containing this diamine structure exhibit unexpectedly high gas permeability properties and are especially useful for separating oxygen from nitrogen or air.
Patent CA-2026586-A1 (CA)
Title: Method and element for assay of catechol and catechol generating substances
Inventor: DANIEL DANIEL S
IPC: C12Q1/00
Filed: 1990-10-01
Abstract: METHOD AND ELEMENT FOR AS SAY OF CATECHOL AND        CATECHOL GENERATING SUBSTANCES                 Abstract of the Disclosure A method and multilayer analytical element for the determination of catechol and catechol generating substances such as salicylate is described.  A series of enzymatic conversions involving tyrosinase is used to convert catechol to o-quinone and the latter to convert a leuco dye to a colored dye.
Patent CA-2028216-A1 (CA)
Title: Melter and heating apparatus
Inventor: KNEPLER JOHN T
IPC: F24C7/08
Filed: 1990-10-22
Abstract: Abstract of the Disclosure Apparatus for melting and heating shortening includes a housing having a top, a bottom and sidewalls; a heating grid mounted in the housing and spaced above the bottom thereof for melting shortening and allowing melted shortening to pass therethrough toward the bottom of the housing.  A door is mounted to the housing for introducing a block of shortening onto the heating grid. A bottom heater is mounted adjacent the housing bottom for maintaining the melted shortening at a desired temperature.  A control circuit maintains control of the operation of both the heating grid and the bottom heater in a predetermined fashion for initially melting a block of shortening introduced onto the heating grid while substantially preventing smoking of the same, and for maintaining melted shortening at the desired temperature.
Patent CA-2028680-A1 (CA)
Title: Hydrocarbon-rich gels as fracturing fluids
Inventor: ENGELHARDT FRIEDRICH
IPC: E21B43/26
Filed: 1990-10-26
Abstract: Abstract The use of hydrocarbon-rich gels as fracturing fluids is disclosed.  The gels are composed of 50 to 99.5% by weight of hydrocarbon, 0.01 to 15% by weight of surfactant and 0.49 to 35% by weight of water.  The facturing fluids according to the invention are comprised of 40 to 99.9% by weight of a gel and 0.1 to 60% by weight of an auxiliary, such as sand and bentonites.
Patent CA-2031726-A1 (CA)
Title: Multi-use envelope (multilope)
Inventor: MALHAS ABDEL-ELAH S
IPC: B65D27/06
Filed: 1990-12-07
Abstract: ABSTRACT                      "Envelope"       A re-usable envelope is provided with at least one additional closure flap 6, 7 spaced from the usual flap 5.  After the envelope has been used once the end may be cut away adjacent the second flap 6 to permit the envelope to be re-used.  This process may be repeated with the third flap to permit the envelope to be used a third time.
Patent CA-2035882-A1 (CA)
Title: Hydrodynamic device for trawl mouth
Inventor: THERET FRANCOIS
IPC: A01K73/05
Filed: 1990-07-18
Abstract: The purpose of the device is to ensure that the trawl opens satisfactorily whatever the trawling speed, while being reliable and easy to use. It consists of a structure (11) comprising at least two flexible superimposed wings (12, 13) connected by a plurality of partitions (14) transversal in relation to said wings. Securing means (15a, 15b) are also fitted to rig the structure on the trawl near the aperture so that the wings are incident in relation to the flow and so that the partitions are set in the direction of flow. In addition to an excellent lifting action at customary trawling speeds, the device of the invention has the advantages of being very easy to rig and of little bulk.
Patent CA-2038735-A1 (CA)
Title: Production of modified polystyrene and its composites with cellulose fiber characterized by anhydride/mixture of anhydride and isocyanate bonding agent
Inventor: MALDAS DEBESH C
IPC: C08L1/02
Filed: 1991-03-20
Abstract: ABSTRACT The present study dials with the of preparation of modified polystyrene (with a polar group) by reacting the polymy with maleic anhydride in the presence of a free radical initiator (benzoyl peroxide). The reaction was conducted in a roll mill at elevated temperatures. Composites comprising cellulose fiber and modified thermoplastics provided better results. The same properties improved when a coupling agent (e.g. isocyanate) was used. The composite products of cellulose fiber and polystyrene may be made with coupling agents such as maleic anhydride (along with an initiator)/phthalic anhydride/isocyanate or their mixtures.
Patent CA-2041000-A1 (CA)
Title: Transmission sleeve for a down hole hammer
Inventor: ELSBY JOHN
IPC: E21B21/12
Filed: 1991-04-23
Abstract: The present invention relates to a sacrificial transmission sleeve for a reverse circulation down hole hammer of the percussive type actuated by a fluid under pressure, including an outer sleeve, a drill bit retained in retaining means, the transmission sleeve comprising a body and an annular flange extending from the body towards the drill bit, wherein the transmission sleeve has an outer diameter greater than that: of the outer sleeve and substantially the same as the drill bite.
Patent CA-2041222-A1 (CA)
Title: Pulse width modulated self-clocking and self-synchronizing data transmission telephonic switching system
Inventor: JONES BARRY W
IPC: H03K7/08
Filed: 1991-04-25
Abstract: Transmissions of synchronous digital data from a master control unit (50A) to a slave, network termination unit (50B) are via a pulse width modulated data stream including pulse width modulated binary code pulses (20, 22) with a pulse width modulated synchronization pulse (24) all of which have a preselected leading edge transition (28) at the same point in each cycle of a master clock signal.  A clock signal is derived at the network termination unit (50B) from the received pulse width modulated binary data stream for decoding and for nonself-clocking, synchronous transmissions from the slave, network termination unit (50B) to the master, control unit (50A).  The phase synchronization pulse (24) is employed to maintain phase synchronization between the transmission to and from the control unit (50A).
Patent CA-2041804-A1 (CA)
Title: Polymeric composites having high flammability resistance, and a method of making composites
Inventor: YATS LARRY D
IPC: B29C43/02
Filed: 1991-05-03
Abstract: ABSTRACT       A reinforced polymeric composite is disclosed having enhanced resistance to flammability, resistance to smoke production, and having a density between 0.25 and 1.8 g/cc.  The polymeric composite is prepared from an aqueous slurry in sheet form.  The composite can meet current Federal Aviation Authority specifications for aircraft cabin interior panels.   37,306-F
Patent CA-2043139-A1 (CA)
IPC: B29C43/18
Filed: 1991-05-23
Abstract: The present invention relates a method and apparatus for applying an insulating film which is impregnated with a curable resin to a solid body.  The method is comprised of the steps of providing a vessel for holding the solid body and the insulating film and placing the insulating film over at least a portion of the solid body.  The method further includes placing the insulating film and the solid body into the vessel; placing a large number of solid particle bodies into the vessel to embed the insulating film and the solid body and embedding a pressurizing unit containing a gas or a liquid in the large number of solid bodies.  The pressurizing unit is then heated to cause thermal expansion of the gas or liquid thereby causing an expansion of the pressurizing unit to create a pressing force, which, through the large number of solid bodies presses the insulating film onto the surface of said solid body.  A simultaneous curing of the impregnated resin then takes place.  The invention also includes an apparatus for carrying out the method.  The apparatus is comprised of a vessel for containing the solid body and the insulating film;  a group of solid particle bodies in which the solid body is embedded; and a pressurizing unit which is embedded in the group of solid particle bodies.  The pressurizing unit contains a gas or liquid for pressing the group of solid particle bodies caused by thermal expansion of the gas or liquid so that a pressing force is created by heating the pressurizing unit.  The pressuring force is applied to the insulating film via the group of solid particle bodies to press the insulating film into the solid body.  The resin is then cured.
Patent CA-2045916-A1 (CA)
Title: Composite strip and an installation for fabricating thermoformed sterile packaging
Inventor: TORTEROTOT ROLAND
IPC: B65B55/04
Filed: 1991-06-28
Abstract: A B S T R A C T      A composite strip for fabricating thermoformed sterile packaging for liquid and/or semi-liquid substances, the composite strip being of the type comprising firstly a first single-layer or multi-layer strip whose "internal" face or layer that is to delimit the inside of the packaging is thermoplastic, heat-sealable, and sterile, and secondly a protective strip which adheres in a manner that is sealed but is capable of being peeled apart to the sterile face of said internal face or layer.  According to the invention, the protective strip is constituted by a second single-layer or multi-layer strip whose composition is identical to that of the first single-layer or multi-layer strip and whose internal thermoplastic layer having a sterile inside face adheres in a manner which is sealed but is capable of being peeled apart to the sterile inside face of the internal thermoplastic layer of said first single-layer or multi-layer strip.
Patent CA-2046155-A1 (CA)
Inventor: JOHNSON JERRY W
IPC: G06F13/40
Filed: 1991-07-03
Abstract: This invention relates to a coupler which allows a host processor such as, for example, a personal computer or point of sale device or the like to communicate with and control a portable data carrier and a method for interfacing the portable data carrier with the host processor. A portable data carrier is a portable device which contains integrated circuit(s). Examples of portable data carriers are Integrated Circuit Cards, data keys, super smart cards, and smart coins. The coupler is adapted to receive the card in a standard card receptacle or card reader to establish connection between the card and a connector in the coupler to which the necessary control signals are 1 applied. The presence of an integrated circuit card is detected in the coupler's card connector terminal which provides a card present signal CRD PRS to the host processor. The host, in turn, provides Clear-To-Send (CTS), Request-To-Send (RTS), Data-Set-Ready (DSR) and Data-Terminal-Ready (DTR) signals. The input/output data from the input/output line channel of the IC card is connected to the Transmit-Data (TX) and Receive-Data (RX) lines of the host processor without the necessity of retransmitting characters communicated between the portable IC and on data carrier and the host processor.
Patent CA-2046892-A1 (CA)
Title: Process for the manufacture of chloroform
Inventor: TIJERO EMILIO
IPC: C07C17/354
Filed: 1990-12-13
Abstract: A process for the manufacture of chloroform by catalytic hydrogenolysis of carbon tetrachloride in liquid phase, wherein liquid phase carbon tetrachloride is reacted with hydrogen gas or a gas containing molecular hydrogen, at a pressure below 8,000 kPa and at a temperature below 250°C, in the presence of a catalyst formed by a metal selected from the group formed by palladium, rhodium, ruthenium and platinum, deposited on a substrate and held in suspension in the liquid.        It is applicable in the industrial preparation of chloro-form from carbon tetrachloride.
Patent CA-2047131-A1 (CA)
Inventor: AOSHIMA KAZUYUKI
IPC: B60K15/04
Filed: 1991-07-16
Abstract: A sealing device for the fuel supply port of a fuel tank for use in vehicles includes a nozzle seal made of a rubber-like elastic material.  The nozzle seal is provided in an annular groove formed in an inner peripheral surface of a fuel supply port guide in such a manner as to be movable in a radial direction.  The inner peripheral portion of the nozzle seal can make contact with a fuel supply nozzle with an interference provided therebetween.  A sealing means is provided on an outer peripheral or side surface of the nozzle seal to seal a gap in said annular groove.  A reinforcing ring is provided on an outer peripheral portion of the nozzle seal.  The reinforcing ring has axial and radial portions.  The radial portion of the reinforcing ring is located adjacent to the fuel supply port guide on a side of the annular groove adjacent to the tank.
Patent CA-2054370-A1 (CA)
Title: Electronic typewriter
Inventor: CROTTI ALESSANDRO
IPC: B41J1/30
Filed: 1991-10-28
Abstract: ABSTRACT OF THE DISCLOSURE         An electronic typewriter has a reduced number of electrically-powered actuators and comprises a motor powering a differential motion transmission unit having first and second output members.  Transmission control means powered by a solenoid moves a slider to engage stop members selectively with the first and second output members to permit the second and first output members respectvely to rotate.  The first output member drives the carriage transport mechanism.   The second output member drives the character carrying element and also powers function devices, namely a correction device, through a motion switching mechanism controlled by a switch control mechanism including another solenoid.  The typing ribbon feed is driven by reciprocation of the slider between its two states.  The motor is mounted on the frame and drives the motion transmission unit on a carriage through a belt;  it also drives a line spacing mechanism through a clutch operated by a further solenoid.   The motor and solenoids as well as the print hammer are controlled by an electronic controlling arrangement.        In alternative arrangements the motor is mounted on the carriage.   A change mechanism controls the output of the motion switching mechanism so that it is applied to the correction device or to the line spacing device depending upon the direction of rotation of the motor.  Instead of using a solenoid, the motion switching mechanism is engaged by a friction device driven from the first output member by driving the first output member backwards by one step.   The motion switching mechanism is coupled to the line spacing device by a splined bar.
Patent CA-2055261-A1 (CA)
Title: High productivity joint compounds
Inventor: PODLAS THOMAS J
IPC: C09K3/10
Filed: 1991-11-12
Abstract: Water demand in an aqueous joint compound composition is increased by incorporating a blend of water soluble polymer (WSP) and crosslinked polyacrylic acid water demand polymer (WDP) with a WSP to WDP blend ratio of 9:1 to 25:1. A preferred WSP is hydrophobically modified hydroxyethylcellulose. This blend may also be used for aqueous tile adhesives.        In the joint compound the thickener. comprising water-soluble cellulose ether(s) and water-insoluble but swellable polyacrylic acid or salt thereof, the acrylic component gives increased joint compound viscosity without the need to decrease water level or increase thickener level.
Patent CA-2056818-A1 (CA)
Title: Grille clip
Inventor: STOKX GARY
IPC: E06B1/00
Filed: 1991-12-02
Abstract: ABSTRACT           A clip is provided to be attached to a grille member, such as a decorative grille for a window, which is used to detachably secure the grille member to a frame or sash.  The clip is secured in a cavity found at the end of the grille member by teeth which extend from the stem of the clip.  The clip has a base which is connected to the stem of the clip at an oblique angle.  The clip has a head portion which comprises two overlapping arcuate members which, when the grille member is in place, are flexibly biased against the frame or sash in order to detachably secure the grille member.
Patent CA-2060474-A1 (CA)
Inventor: DUMBLE LYNETTE J
IPC: A61K31/557
Filed: 1992-01-31
Abstract: The present invention is concerned with methods for the treatment of medical conditions  with  benzindene prostaglandins.  Medical conditions which may  be treated by   the   methods  of  the  present  invention  include transplant rejection and atherosclerosis.
Patent CA-2065731-A1 (CA)
IPC: G10L19/00
Filed: 1990-10-09
Abstract: A speech coder and decoder methodology wherein pitch excitation and codebook excitation source energies (100) are represented by parameters that are readily transmissible with minimal transmission capacity requirements. The parameters are the long term energy value, a short term correction factor which is applied to the long term energy value to match the short term energy, and proportionality factor(s) that specify the relative energy contribution of the excitation sources to the short term value (101)
Patent CA-2065989-A1 (CA)
Title: Personal computer data flow control
Inventor: KEENER DON S
IPC: G06F13/38
Filed: 1992-04-14
Abstract: This  invention  relates  to  personal  computers,  and  more particularly to a personal computer using a small computer systems interface (SCSI) controller coupled directly to the local  processor  bus  for  controlling  data  transfer  with storage memory devices  such as  fixed or removable media electromagnetic  storage  devices.   The  personal  computer system has a high speed local processor data bus, at least one logical processor device coupled directly to the local processor bus and capable of signalling through the local processor bus an occurrence of the transfer of blocks of data, and a storage controller coupled directly to the local processor  bus  for  regulating  communications  between  the processor device and storage memory devices.  The storage controller has  a  FIFO memory  for  transitory  storage  of blocks of data being exchanged with the local processor bus and is capable of signalling through the local processor bus the state of the FIFO memory.   The processor device  and storage controller cooperate for exchange of blocks of data between the local processor bus and FIFO memory when the FIFO memory has available one of data to be transferred and space for reception of data and for emptying of the FIFO memory through the local processor bus as necessary.