baber/WOPTO huggingface dataset:
Patent CA-2021536-A1 (CA)
Title: Method for forming a resist pattern
Inventor: NISHIJIMA KANJI
IPC: H05K3/06
Filed: 1990-07-19
Abstract: Abstract of the disclosure In a method for forming a resist pattern comprising exposing a photosensitive material which is a laminate of an insulating base plater an electric conductive coating and a positive working photo resist coating, through a positive mask of circuit pattern placed on said photo resist, to an actinic radiation, developing the photo resist with an aqueous alkaline solution, thereby removing the exposed area and forming an etching resist, subjecting said resist to an etching with an acidic etching solution to remove the exposed conductive coating and finally removing the resist still remained on the unexposed area of the photosensitive material, an improvement which is characterized in that after said development and prior to the etching operation, the unexposed resist is further exposed to an actinic radiation.    The present method is useful for giving a printed circuit board with excellent circuit pattern having no slender lines due to undesired side etching.
Patent CA-2022837-A1 (CA)
Title: Polyoxymethylene multi-copolymer and its resin composition
Inventor: MAKABE YOSHIKI
IPC: C08L59/00
Filed: 1990-08-08
Abstract: A polyoxymethylene multi-copolymer obtainable by copolymerizing (a) trioxane, (b) at least one cyclic ether or formal compound chosen from the group of ethylene oxide, 1,3-dioxolane, 1,3-dioxepane, 1,3,5-trioxepane and 1,3,6-trioxocane, and (c) at least one compound chosen from the group of glycidyl phenyl ether, styrene oxide and glycidyl naphthyl ether, and characterized in that the number average molecular weight of said polyoxymethylene multi-copolymer is from 10,000 to 100,000, that the melting point (Tm) and crystallization temperature (Tc) there of are in a relationship of Tm - Tc < 15 (°C) and that the size of the spherulites is 10 µm or less, or a resin composition comprised of this polyoxymethylene multi-copolymer and a polyoxymethylene resin, is distinguished in crystallinity, mechanical strength and surface appearance and is particularly suited for faster cycle molding.
Patent CA-2023062-A1 (CA)
Inventor: BUGLINO STEVEN T
IPC: G01N31/00
Filed: 1990-08-10
Abstract: A method of constructing a permanent record test device for testing the efficiency of a steam sterilizer apparatus to create a vacuum satisfying the Bowie-Dick test procedure and the device constructed thereby is disclosed. A sheet of selectively porous material such as one hundred pound blotter paper having a steam sensitive indicator ink printed thereon is laminated between layers of steam and air impermeable polymeric material to substantially occlude the sheet from ambient atmosphere, except for a small metering region. The small metering region may include a hole punched through the laminated sheet. Two parallel and spaced apart strips can be used with a metering hole punched at one end of each of the strips or, alternatively, a metering hole is punched at one end of any one of the strips and the strips can be connected with a fluid passageway at the opposite end of the strips.      Strips other then straight strips can be used, e.g., an L-shaped strip can be used with a V-shaped strip.
Patent CA-2023673-A1 (CA)
Title: Football shoulder pad with flexible rib protection means
Inventor: WINGO JAMES C JR
IPC: A63B71/12
Filed: 1990-08-21
Abstract: A  shoulder  pad  for  a  football  player,  includes  a  rib protector pad body disposed adjacent to the body arch members and releasably connected to the pad body disposed beneath the body arch members of the shoulder pad.
Patent CA-2024238-A1 (CA)
Title: Process for improving thermal stability of synthetic lubes
Inventor: HO SUZZY C H
IPC: C10M105/04
Filed: 1990-08-29
Abstract: A process is disclosed for improving the thermal stability of polyalpha-olefin lubricants by contacting the lubricant with an acidic catalyst for a time and at a temperature sufficient to achieve the skeletal isomerization of the molecular structure of the lubricant. The reaction is carried out preferably on unhydrogenated synthetic lubricants in contact with Lewis acid catalysts. Following the isomerization reaction, the unsaturated lubricant is hydrogenated to produce lubricant with better thermal stability. Surprisingly, when the isomerization reaction is carried out using unsaturated oligomer produced from the oligomerization of alpha-olefins in contact with reduced Group VIB metal oxide catalyst on porous support as starting material the viscometric properties of the lubricant, e.g., viscosity and VI, are not significantly altered, although the thermal stability of the lubricant is substantially increased. The reaction of the present invention may be carried out neat or in the presence of a solvent. Improvements in thermal stability are observed over a wide range of catalyst concentrations. Concentrations of about 10 weight percent are preferred with aluminum chloride catalyst.
Patent CA-2026416-A1 (CA)
Title: Cross linked foamed polyolefin molding method and composite articles formed therefrom
Inventor: NELSON DONALD E
IPC: C08J9/36
Filed: 1990-09-27
Abstract: Patent ABSTRACT OF THE DISCLOSURE      A method for forming soft, resilient, smooth, energy dissipating articles from foamed partially cross-linked polyolefins wherein sheet stock is cut into a preform and the preform while at room temperature is positioned within a mold cavity formed by partible mold halves.  The preforms and the cavity of the molds are so arranged and constructed that after molding there is no flashing needing trimming because the polyolefin is substantially confined within the cavity without any lateral projection into the parting surfaces of the mold.
Patent CA-2027552-A1 (CA)
Title: Arrangement for a vacuum cleaner
Inventor: EDLUND LEIF E
IPC: A47L9/28
Filed: 1990-01-24
Abstract: ABSTRACT      A vacuum cleaner has an electric motor (15) and a suction fan (17) connected to the motor.  A control device (16) drives the motor in a speed range limited upwards by a rated voltage corresponding to a rated power level for the motor.   Means (46, 39;  30, 31) are provided, after actuation  of  a  manually  operable  means  (19),  to temporarily connect the motor to a voltage exceeding said rated voltage,  resulting in operation at  an increased power level during a predetermined time.  The means (46, 39;  30,  31)  for  connecting  of  the  increased  voltage comprises  a  thermally-operated  means  (46,  30)  which cooperates with the control device for the connection and disconnection, respectively, of the increased voltage, the predetermined time being determined by the heating time for the thermally-operated means.
Patent CA-2028621-A1 (CA)
Title: Antithrombotic substituted cycloalkano[b]dihydroindole- and -indole-sulphonamides
Inventor: BOSHAGEN HORST
IPC: A61P9/08
Filed: 1990-10-26
Abstract: ABSTRACT OF THE DISCLOSURE     Substituted antithrombotic substituted cycloalkano[b]-dihydroindole- and -indole-sulphonamides for treatment of thromboses, thromboembolisms, ischaemias, asthma and allergies, of the formula                  (I) in which R1, R2, R3 and R4 are hydrogen or other radicals, X is aryl, alkyl or CF3, m and Z each is 1,2,3 or 4, n is 0,1 or 2, A is a bond or -NH-, and Y is OH, alkoxy, aryloxy, amino or sulphonylamine, with the proviso that, in all cases, two of the substi-tuents R1-R4 are other than hydrogen in the event that m represents the number 2 and Y represents the hydroxyl group, or a salt thereof, Le A 27 157
Patent CA-2032832-A1 (CA)
Inventor: FIELD NATHANIEL L
IPC: B23B31/30
Filed: 1990-12-24
Abstract: Abstract of the Disclosure A fast tool change holder is provided for holding a tool adapter onto an internally delivered coolant spindle.  The holder comprises an expandable split collet which can be inserted into the tool adapter and expanded in order to hold the adapter onto the spindle.  The split collet has an expandable bladder therein which receives a coolant fluid from the spindle and expands under the pressure of the coolant fluid radially outwardly for expanding the split collet.  The bladder enables the coolant fluid to assist mechanical and centrifugal forces associated with the split collet to hold the tool adapter onto the spindle.
Patent CA-2033628-A1 (CA)
Title: Low melting point copper-manganese-zinc alloy for infiltration binder in matrix body rock drill bits
Inventor: HORTON RALPH M
IPC: C04B35/52
Filed: 1991-01-04
Abstract: ABSTRACT OF THE DISCLOSURE    A novel infiltration alloy comprises about 5 to 65% by weight of manganese, up to about 35% by weight of zinc, and the balance copper.  Preferably, the infiltration alloy comprises 20 by weight of manganese, 20% by weight of zinc, and the balance copper.  The infiltration alloy is useful in the manufacture of matrix bodies such as matrix drill bit bodies.  A method for the manufacture of a matrix body comprises forming a hollow mold for molding at least a portion of the matrix body, positioning diamond cutting elements in the mold, packing at least a part of the mold with a powder matrix material, infiltrating the matrix material with the novel infiltration alloy in a furnace to form a mass, and allowing the mass to solidify into an integral matrix body.  Because the novel infiltration alloy permits infiltration to be carried out at temperatures below about 1050°C, many diamond cutting elements which begin to deteriorate at temperatures above 1000°C can be bonded without substantial degradation to the matrix body during the infiltration process, and there is no need to secure them to the matrix body in a subsequent brazing or mechanical bonding step.
Patent CA-2041308-A1 (CA)
Inventor: ECKHARDT CAREY J
IPC: A44B18/00
Filed: 1991-04-26
Abstract: Abstract of the Disclosure A strip material from which portions may be severed and used together as a releasably engageable fastener.  The strip material comprises a bonding layer in which are embedded a plurality of U-shaped monofilaments. Each V-shaped monofilament includes two headed stem portions adapted to engage the headed stem portions of another portion of the strip material.  The U-shaped monofilaments are disposed in generally straight rows longitudinally of the strip material with a percentage of the center to center spacing dimensions between adjacent longitudinal rows being less than a maximum dimension equal to the diameter of the heads plus the diameter of the stems so that slippage of heads longitudinally of the strip material between these closely spaced rows will be restricted, and with the center to center spacing dimension between the rest of the adjacent rows being greater than the maximum dimension and being selected to help provide a desired level of engagement and disengagement forces between the portions.  The U-shaped monofilaments are also disposed in zig-zag rows transverse of the strip material and are spaced and shaped so that slippage of heads transversely of the strip material between the zig-zag rows will also be restricted and to help provide a desired level of engagement and disengagement forces between the portions.  Thus, upon engagement the rows of headed stem portions of one portion of the strip material cannot readily slip between the rows of headed stem portions on another portion of the strip material.
Patent CA-2041888-A1 (CA)
Title: Apparatus and method for gas absorption in a liquid
Inventor: STIRLING THOMAS E
IPC: B01D53/14
Filed: 1991-05-06
Abstract: ABSTRACT OF THE DISCLOSURE           An apparatus and method for increasing gas absorption in a liquid includes, in a first embodiment, gas injection airfoils at an inlet of an extended vertical tube and a pump at an outlet of the tube for drawn in the liquid at a rate greater than the rise rate of the gas bubbles.  An outlet of the pump preferrably includes a plurality of outlet nozzles.  A second embodiment for use with a liquid or slurry includes a venturi gas inlet in place of the airfoils.
Patent CA-2042522-A1 (CA)
Inventor: CANTWELL ROBERT H
IPC: H04B1/709
Filed: 1991-05-14
Abstract: An apparatus and method for pseudo-random noise (PN) code correlation in a GPS receiver employing sign and magnitude input weighting for each of the in-phase (I) and quadrature-phase (Q) samples of a received PN-code modulated carrier.  A programmable R factor provides input A/D sample sign and magnitude weighting control of outside crossing samples for interference rejection of other RF signals interfering with the received PN-code modulated RF carrier.  The R factor weighting determines if the A/D samples are from a linear or adaptive A/D converter.  In-phase reference (IREF) signals and quadrature-phase reference (QREF) signals, produced by an internally generated PN-code reference, are provided to a plurality of I and Q multi-Y-tap correlator/integrators for correlation with the I and Q samples.  The apparatus correlates I and Q samples obtained from IF sampling or baseband sampling of the received PN-code modulated carrier.
Patent CA-2046044-A1 (CA)
Title: Vortex flowmeter
Inventor: KUMANO HIDEO
IPC: G01F1/32
Filed: 1991-07-02
Abstract: A vortex flowmeter wherein a main body and a fitting plate with a by-pass are integrally formed with each other and the fitting plate placed at an outlet of a passage of small diameter and of a constant section extending from an inlet of a large diameter with a continuous contraction.      The passage in the main body includes a vortex generator and a vortex sensing means for detecting a vortex produced by the vortex's generator. The by-pass line is composed of a plurality of round through-holes arranged in a circular portion of the fitting plate.
Patent CA-2047129-A1 (CA)
Inventor: HICKORY GORDON E
IPC: B24D3/34
Filed: 1991-07-16
Abstract: ABSTRACT OF THE DISCLOSURE      An  improved  abrasive product such as a grinding wheel is disclosed.   The abrasive product contains an active filler mix-ture  of  tin,  FeS2,  and  K2SO4,  which  mixture  improves the grinding quality and versatility of the abrasive product.
Patent CA-2047261-A1 (CA)
Inventor: DODSON NEIL A
IPC: G04F3/00
Filed: 1991-07-17
Abstract: Système de minuterie programmable à faible puissance à utiliser avec des systèmes de photomètre à réflexion microprocessorisés pour produire un signal de commande d'alarme à des moments d'activation d'alarme préprogrammés.  Le système utilise un circuit de minuterie comprenant un dispositif pour mettre en mémoire une valeur de comptage correspondant au nombre de laps de temps prédéfinis existant entre un moment instantané donné et un temps d'activation d'alarme préprogrammé.  Le système comprend également un dispositif pour produire un signal correspondant au passage de chacun des laps de temps prédéfinis et utilise le signal de sortie du générateur pour incrémenter la valeur de comptage mise en mémoire chaque fois que le laps de temps prédéfini s'est écoulé. Il comporte aussi un dispositif pour produire un signal d'activation d'alarme lorsque la valeur de comptage mise en mémoire a été incrémentée à une valeur d'activation prédéfinie.  Le circuit de minuterie programmable fonctionne en conjonction avec un commutateur à transistor et le microprocesseur du système de façon à calculer et à mettre en mémoire la valeur de comptage requise dans un compteur/registre à décalage chaque fois que le système de photomètre à réflexion est mis hors circuit et qu'une fonction d'alarme se trouve activée.  Il prend alors commande et fonctionne sous des conditions de consommation d'énergie négligeables et produit un signal de commande d'alarme qui réanime la circuiterie du système au complet lorsque le moment d'activation d'alarme préprogrammé a été atteint.
Patent CA-2048549-A1 (CA)
Title: Multi-axis hand controller
Inventor: SIVA KUMAR V
IPC: G05G9/04
Filed: 1991-08-07
Abstract: ABSTRACT OF THE DISCLOSURE     A hand controller (10) is provided with which an operator can simultaneously control several degrees of freedom of a mechanism, for example a slave arm (18), single handedly.  An operator's handle (12) is connected by four links serially arranged between the handle and elements (50, 48, 46, 42) to a platform (32), these links permitting rotation about three axes (A, B, C) and linear displacement towards and away from the platform (axis Z). The platform is connected by three parallel non-telescopic legs (34) to a base (30) so that the platform (32) (and so the handle 12) can be moved in directions (X and Y) perpendicular to the Z axis.  Force and torque feedback may be provided to all motions of the hand controller (10).
Patent CA-2049223-A1 (CA)
Title: Molded case circuit breaker actuator-accessory unit having component tolerance compensation
Inventor: PALMER THOMAS M
IPC: H01H71/32
Filed: 1991-08-15
Abstract: A compact circuit breaker containing an electronic trip unit employs an actuator-accessory unit to articulate the circuit breaker operating mechanism and separate the circuit breaker contacts to interrupt current within a protected circuit. A tolerance compensating spring is attached to the actuator-accessory unit trip armature to precisely set the sepa-ration gap between the tip of the armature and the actuator-accessory trip actuator arm.
Patent CA-2050259-A1 (CA)
Title: Antiperspirant stick containing a macroporous polymer
Inventor: ABRUTYN ERIC S
IPC: A61K8/00
Filed: 1991-08-29
Abstract: ANTIPERSPIRANT STICK CONTAINING A MACROPOROUS POLYMER     ABSTRACT           An antiperspirant stick product containing as components at least one material such as astringent antiperspirant compounds, a volatile silicone, a waxy material, emollients, perfumes, coloring agents and other ingredients normally used in making stick products.  The improvement is directed to incorporating into the stick product as one component a macroporous highly crosslinked polymer.  The macroporous polymer is free of "in Situ" entrapped active ingredients.
Patent CA-2051147-A1 (CA)
Inventor: MARUYAMA YUISUKE
IPC: H03H21/00
Filed: 1991-09-11
Abstract: An echo canceller uses a Finite-Impulse-Response (FIR) filter to remove an echo from a transmission input signal, the echo resulting from a reflection of a received signal through an echo path.  An echo-cancelled signal is thereby output.  The echo canceller includes impulse response estimating means for estimating the impulse response of the echo path at a time t from the received signal, the echo-cancelled signal, and the estimated  impulse response signal.   The estimated  impulse response is output as the estimated impulse response signal. An echo signal estimating means determines a predicted signal of the echo signal from the estimated impulse response signal and the received signal, and outputs the predicted signal as an estimated echo signal.  Subtractor means subtracts the estimated echo signal from the transmission signal to produce the echo cancelled signal, and the impulse response estimating means estimates the impulse response of the echo path by using the received signal and the echo cancelled signal at the time t, and the received signal and the echo cancelled signal at a time (t-M) (M being a natural number).
Patent CA-2052077-A1 (CA)
Title: Detergent composition
Inventor: BATENBURG AMIR M
IPC: C12N9/96
Filed: 1991-09-23
Abstract: C7248 (R) ABSTRACT             DETERGENT COMPOSITION           The stability of lipolytic enzymes in detergent compositions can be improved by addition of a stabilising material which is capable of reversibly forming a complex with the active site of the lipolytic enzyme. Preferred stabilising materials are bornic acid derviatives.
Patent CA-2053740-A1 (CA)
Title: Procede pour la ratification de codes secrets pour cartes a memoire
Inventor: GERONIMI FRANCOIS
IPC: G06F21/62
Filed: 1991-10-18
Abstract: Le procédé est  applicable aux cartes  à mémoire  à micro-circuit comportant  un  organe  de  traitement  de données  et   un   dispositif   de mémorisation   pour l'enregistrement  d'un  code   secret  et  des   données fournies à la  carte. Il consiste  à déterminer dans  le dispositif de mémorisation au moins une zone de  mémoire de taille  fixe pour  écrire (2)  de façon  systématique dans  cette   zone  au   moins  un   bit  avant   chaque présentation  d'un  code   secret  et   à  effacer   (9) l'ensemble des bits inscrits dans la zone de taille fixe dès que l'organe de  traitement de données constate  (7) que le code  secret présenté correspond  au code  secret enregistré dans la carte.
Patent CA-2054658-A1 (CA)
Title: Rubber composition for pneumatic tire treads
Inventor: KAWAKAMI KINYA
IPC: C08K3/04
Filed: 1991-10-31
Abstract: ABSTRACT OF THE DISCLOSURE     Rubber compositions for use in tread portions of pneumatic tires are formulated essentially with a selected class of styrene-butadiene rubbers and a selected class of carbon blacks.  The rubber has two specific different temperatures of glass transition, whereas the carbon black has a specific iodine adsorption.  The resultant composition shows -35°C or lower in brittleness temperature and 0.7 or greater at 0°C in loss tangent, contributing to stable driving in both hot and cold seasons.
Patent CA-2056116-A1 (CA)
IPC: A47L9/28
Filed: 1991-11-25
Abstract: A control apparatus of an electrical appliance comprises a sensor for detecting a physical amount and a fuzzy inferring device for determining the drive condition of a load by fuzzy inference based on a signal outputted from the sensor.  The sensor has at least one normalized membership function to be used by fuzzy inference and achieves a plurality of membership functions that can be expressed by congruent curves by performing a predetermined subtraction or addition on the signal outputted from the sensor.
Patent CA-2056158-A1 (CA)
Inventor: HOLMES-FARLEY STEPHEN R
IPC: C09J4/00
Filed: 1991-11-25
Abstract: A one-component adhesive for metal surfaces such as iron, zinc, copper, cadmium and their alloys that will cure upon contact with the metal surface. The adhesive composition includes an olefinically unsaturated monomer; an acidic compound; a sulfonyl-containing compound; and a compound containing a transition metal. The adhesive composition may also optionally contain other additional polymeric materials and will cure rapidly upon contact with a metal surface to form an adhesive bond between metal surfaces. The adhesive composition avoids the use of halide-containing compounds which can be undesirable in certain applications.
Patent CA-2056847-A1 (CA)
Title: Method and apparatus for maintaining a speed relationship between main and supplemental vehicle drives
Inventor: OLSON STEPHEN R
IPC: G05D13/62
Filed: 1991-12-03
Abstract: An electronic control is provided for a vehicle having a main drive for propelling the vehicle, a fluid pump for providing pressurized fluid, and a supplemental drive driven by the pressurized fluid for providing supplemental propulsion for the vehicle. A main drive sensor senses the speed of the main drive and responsively produces a main drive speed signal. A supplemental drive sensor senses the speed of said supplemental drive and responsively produces a supplemental drive speed signal. A microprocessor receives the main and supplemental drive speed signals, modifies the main drive signal by a preselected amount and responsively produces a modified main drive speed signal. The microprocessor further produces an error signal responsive to a difference between the supplemental and modified main drive speed signals and processes the error signal to produce a control signal. A fluid control device receives the control signal and controls fluid flow in the supplemental drive in response to the control signal.