baber/WOPTO huggingface dataset:
Patent CA-2023298-C (CA)
Title: Process for the preparation of a new polymer useful for drag reduction in hydrocarbon fluids in exceptionally dilute polymer solutions
Inventor: MALIK SANJAY
IPC: C08F20/54
Filed: 1990-08-15
Granted: 1997-04-29
Abstract: Novel polymer for drag reduction in hydrocarbon fluids is dis-closed which comprises polymerising a C-12 to C-18 acrylate or methacrylate monomer and an ionic with or without other monomers acting as fillers or additives at a temperature between 20 and 30°C with constant stirring and separating the resultant polymer.          The preparation of the polymers is simple,  shear stability is good even at high shear rates, insensitivity to the presence of any other polar solvent and good solubility in almost all the hydrocarbon liquids.  The novel polymer reduces friction in the flow of a hydrocarbon fluid by a factor around 5 at concentra-tions as low as 1 to 25 ppm.
Patent CA-2024453-C (CA)
Title: Ultrasonic transducer electrical interface assembly
Inventor: GORTON LANNY A
IPC: A61B17/34
Filed: 1990-08-31
Granted: 1995-08-29
Abstract: An ultrasonic air-in-line detection system  for use  in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which utilizes an innovative construction used to attach electrical connectors to the ultrasonic transducers.   Rather than wires,  a thin flex circuit having a plurality of arms is used, with the flex circuit having a circular conductive pad located at the end of each arm. A circular segment of conductive transfer tape is used to attach each of the conductive pads to the thin layer of conductive metal located on each side of the ultrasonic transducer.
Patent CA-2028528-C (CA)
Title: Hydrogel wound dressing product
Inventor: CARTMELL JAMES V
IPC: C08G18/75
Filed: 1990-10-25
Granted: 2001-10-16
Abstract: A wound dressing product (10) is described which includes a flexible backing member (14) that can be vacuum formed to include a depression (38). A pressure-sensitive adhesive layer (16) extends across the depression (38) side of the flexible backing member (19). A hydrogel material (12) is positioned in the depression (38) of the flexible backing member (14) and a release liner (18) extends over the exposed pressure-sensitive adhesive layer (16) and the exposed hydrogel material (12), which release liner (18) has a selective releasability whereby it can be removed from the wound dressing product (10) intact, leaving a portion of the pressure-sensitive adhesive (16) and the hydrogel material (12) exposed.
Patent CA-2045316-C (CA)
Title: Container for storing a wet paint roller sleeve
Inventor: FILIPCHUK DONALD
IPC: B44D3/12
Filed: 1991-06-24
Granted: 1994-02-01
Abstract: "A CONTAINER FOR STORING A WET PAINT ROLLER SLEEVE"          ABSTRACT OF THE DISCLOSURE           A  container  for  storing  a  wet  paint  roller comprises a cylindrical sleeve with two end caps closing the sleeve to form a cylindrical container.   The sleeve at one end has a short slot extending axially of the sleeve and a cooperating slot is provided in the end cap to align with the slot  on  the sleeve.   In the method of use,  the wet paint roller including the textile surface and the handle are both inserted into the container with the portion of the handle which extends from the axial rod passing through the slot in the sleeve and the slot in the end cap thus containing the whole  of  the  paint covered part within  the container and leaving the handle exposed outside the container.
Patent CA-2047309-C (CA)
Title: Pre-set regulator assembly
Inventor: SPARROW TIMOTHY H
IPC: A41H37/10
Filed: 1991-07-17
Granted: 1995-03-28
Abstract: A pressure regulator assembly having a pre-set apparatus in a selectively inaccessible location for pre-setting a minimum pressure for said pressure regulator and an adjustable mechanism for providing a selectively higher pressure.  The pre-set apparatus is selectively adjustable only upon gaining entry to the selectively inaccessible location.  A shield member prevents blockage of a venting port while assuring continued communication between the venting port and an area of reduced pressure, such as atmospheric pressure.  The advance in the art is, for instance, in reduced number of incompletely assembled or damaged parts of a slide fastener when the pressure regulator is used in governing an assembly mechanism for two parts of a slide fastener to each other.
Patent CA-2047721-C (CA)
Title: Use of intercellular adhesion molecules, and their binding ligands in the treatment of asthma
Inventor: WEGNER CRAIG D
IPC: A61P11/06
Filed: 1990-03-09
Granted: 2004-01-06
Abstract: The present invention relates to the use of intercellular adhesion molecules (ICAM-1), their functional derivatives, and molecules which bind to them, in the treatment of asthma.
Patent CA-2048514-C (CA)
Title: Synchronous processor unit with interconnected, separately clocked processor sections
Inventor: OVERHOUSE LEONARD E
IPC: G06F15/78
Filed: 1991-08-07
Granted: 1998-08-25
Abstract: A synchronous processor unit is divided into two sections, and each separately clocked by different clock signals.  One section, containing an instruction execution unit and memory for storage of instructions and data, is clocked at a higher frequency, while the other section, containing those elements of a processor unit less frequently used, are locked with a slower-frequencied clock.  The elements of each section are intercoupled by separate and independent data buses. and selectively to one another by a buffer unit.  The clock signals used by both sections are produced by a clock-generating unit which also monitors the instructions being executed by the instruction execution unit.  When an instruction requiring communication between the two sections is detected, at least one predetermined transition of each of the fast and slow clocks are synchronized, and during this synchronization the separate buses of each section are coupled to one another by the buffer unit for information exchanges therebetween.
Patent CA-2050741-C (CA)
Title: Mix and match invisible ink game
Inventor: LANDIS THOMAS J
IPC: G09B3/04
Filed: 1991-09-05
Granted: 2002-10-01
Abstract: A learning association game wherein at least two series of images are visibly presented on at least one marking sheet with each of the images of one series being logically related to one of the images of the other series and with the images of each series being in different order to be selectively identified by a responding player with a marking instrument to visibly indicate indicia associated with at least one series of images, the game having a confirmation area associated therewith which includes the visible indicia and the correct invisible answers to be developed with the marking instrument.
Patent CA-2057890-C (CA)
Inventor: SMITH WALTER JOHN
IPC: B21J15/02
Filed: 1990-04-26
Granted: 1999-01-19
Abstract: Système de fixation pour éléments de fixation multipièces du type à rétreindre, comprenant un axe (12) et un collier (14), et constituant un élément de fixation type moignon (10) conçu pour être placé comme élément de fixation par traction, l'axe (12) possédant une partie de préhension filetée (34, 36), et comprenant également un outil de montage (44) présentant une enclume à rétreindre (50) et un écrou rotatif (46) se vissant sur la partie filetée de traction (34, 36) de l'axe (12). Un effort axial relatif est appliqué entre l'axe (12) et le collier (14) par l'intermédiaire de l'écrou (46) et de l'enclume à rétreindre (50), pour amener cette dernière à passer radialement par dessus le collier (14) afin de le faire pénétrer par rétreinte dans les rainures de verrouillage (32) ménagées sur l'axe (12) et la partie de traction (34, 36) restant sur l'axe (12) après montage.
Patent CA-2058847-C (CA)
Title: Air separation
Inventor: RATHBONE THOMAS
IPC: F25J3/04
Filed: 1992-01-07
Granted: 2002-10-08
Abstract: Air is compressed in a compressor 2 and has water vapour and carbon dioxide removed therefrom in an apparatus 4. A portion of the resulting purified air is then cooled by passage through a main heat exchanger 6 to a temperature suitable for its separation by rectification. The air is then introduced into the higher pressure stage 12 of a double rectification column 10 (which also has a lower pressure stage 14). Liquid oxygen is withdrawn from the lower pressure stage 14 by a pump 36 and is vaporised by passage through the heat exchanger 6 countercurrently to the aforementioned air to form a high pressure gaseous oxygen product. A second portion of the purified air is further compressed in compressors 38 and 40 and is then passed through the heat exchanger 6 countercurrently to the oxygen product, thereby helping to warm such product. A part of the first portion of air is withdrawn from an intermediate region of the heat exchanger 6, is expanded in a turbine 50 and is introduced into the lower pressure rectification stage 14. A part of the second portion of the air is taken from intermediate the compressors 38 and 40 and is passed through the heat exchanger 6, being withdrawn therefrom at an intermediate location thereof. This air stream is then expanded in an expansion turbine 48 and is passed into the higher pressure rectification stage 12 of the column 10.
Patent CA-2063078-C (CA)
Title: Railcar articulated connector and wedge shim therefore
Inventor: SPENCER CHARLES P
IPC: B61G5/02
Filed: 1992-03-13
Granted: 1998-10-20
Abstract: An improved articulated railcar connection and wedge shim wherein the wedge shim has a plurality of steps formed in the sides thereof upwardly from the narrow wedge bottom to present successive lifting surfaces accessible from inspection portals formed in the connection.                                 - i -
Patent CA-2067149-C (CA)
Title: Misloaded iv tube detector for an iv pump
Inventor: D SILVA EDMUND D
IPC: F04B43/08
Filed: 1991-08-15
Granted: 2000-02-29
Abstract: A peristaltic pump comprising a housing (19), including a base (21), a resilient tube (27) and peristaltic pumping fingers (31) carried by the supporting structure. The tube (27) is positionable on the base (21) in a proper position and an improper position. In the proper position, the peristaltic pumping fingers (31) can properly progressively squeeze the tube to pump a fluid through the tube and in an improper position.     A door (23) is mounted on the housing (19) for movement between an open position and a closed position. A latch (25) includes a pivotable latch member (51) on the door (23) and a fixed latch member (55) on the housing (19). The pivotable latch member (51) is movable between a latching position in which the door (23) is locked in the closed position and a releasing position in which the door (23) is not locked in the closed position. If the tube (27) is in the improper position, the pivotable latch member (51) is prevented from being placed in the latching position.
Patent CA-2069660-C (CA)
Title: Trochanter stabilization device
Inventor: WEIGUM HANS
IPC: A61B17/56
Filed: 1992-05-27
Granted: 1999-04-27
Abstract: A device for treating fractures of the neck and shaft of bones such as the femur, which includes a sleeve strap and a trochanter stabilization plate, and is designed so that the stabilization plate can be positioned over a previously installed sleeve strap.
Patent CA-2077970-C (CA)
Title: Optical word recognition by examination of word shape
Inventor: HUTTENLOCHER DANIEL P
IPC: G06V30/182
Filed: 1992-09-10
Granted: 1999-02-23
Abstract: A method for reducing an image of a character or word string to one or more one dimensional signals, including the steps of determining page orientation, isolating character strings from adjacent character strings, establishing a set of references with respect to which measurements about the character string may be made, and deriving a plurality of measurements with respects to the references in terms of one dimensional signal, amenable to identification processing techniques.
Patent CA-2077977-C (CA)
Title: Tree stand
Inventor: CARRIERE STEVEN NORMAND
IPC: A01M31/02
Filed: 1992-09-10
Granted: 2002-01-29
Abstract: This invention relates to a removable load supporting stand for temporary attachment to a tree trunk or the like for use while hunting for example. According to the invention a stand is provided including a platform extending laterally outwardly from the tree trunk. The platform has a load supporting portion between opposing sides. Engaging means on an inward portion of the platform function to releasably engage an adjacent segment of the tree trunk. A chain at each of it's ends is secured to an opposing side of the platform. The chain releasably encompasses the tree trunk upward of the segment and defines a plane transverse an axis of the tree trunk. The chain is flexible in the plane and resistant to flexure perpendicular to the plane. Biasing means engage the chain and urge the chain in a direction of the plane to disengage the tree trunk. Preferably the chain is comprised of two parallel spaced apart rows of overlapping links transversely interconnected by pins disposed substantially normal to the plane, such that the links and pins define a longitudinal series of apertures therebetween. The biasing means preferably comprise an elongate flexible member having an inherent tendency to assume a selected configuration when unstressed.
Patent CA-2078117-C (CA)
Title: Surface conditioner for formed metal surfaces
Inventor: AWAD SAMI B
IPC: C10M107/34
Filed: 1991-03-06
Granted: 2001-08-14
Abstract: Contact of acid or alkaline cleaned aluminum surfaces, particularly cans, with a water based composition containing a combination of (i) alkoxylated phosphate esters, (ii) ions of aluminum, zirconium, iron, tin, and/or cerium, (iii) a metal etching component, and (iv) a combination of alkoxylated alcohol and alkoxylated alkyl phenol emulsifiers, gives the surface after drying lowered surface friction without loss of high quality printability and lacquer adhesion and removes any brown spotting on the cans that may have developed during the cleaning or post-cleaning rinses. The cans after treatment are substantially free from any water breaks when rinsed with water. The foaming resistance and storage stability of the water based composition as de-scribed above, and of other similar surface friction reducing treatments for aluminum containers, may be advantageously in-creased by adding a biocidal agent, preferably hydrogen peroxide, and a combination of liquid paraffin, solid wax, and a high molecular weight fatty acid derivative(s) as antifoam agent.
Patent CA-2080993-C (CA)
Title: Lawn and garden chipper shredder vacuum apparatus
Inventor: CONNOLLY KEVIN J
IPC: A01G1/12
Filed: 1992-10-20
Granted: 1995-01-17
Abstract: ABSTRACT     Lawn and garden maintenance equipment for collecting and shredding debris and chipping branches is provided with a wheel-supported housing having a handle for guiding the apparatus, the housing having a substantially closed bottom wall below the blades and having a portion thereof providing an air and debris inlet opening, a motor mounted on the housing with a shaft extending into housing and supporting a disc for rotation with the shaft within said housing, the disc having a cutter on its top for slicing limbs and a slot adjacent said cutting means to permit sliced material to pass through the disc, downwardly extending blades mounted on the bottom of the disc move air and air entrained debris within the housing to an exit opening in said housing generally opposite the inlet for air and entrained debris, and a top opening in the housing is radially aligned with the cutter to accept limbs and the like to be fed through the opening to be engaged by the cutter.
Patent CA-2090809-C (CA)
Title: Method for liquefying natural gas
Inventor: KIKKAWA YOSHITSUGI
IPC: F25J1/02
Filed: 1993-03-02
Granted: 1997-04-08
Abstract: Provided is a method for liquefying natural gas which can be readily adapted to LNG plants of all sizes without requiring expensive and special heat exchangers.  The liquefaction of feed gas of natural gas and recycle natural gas is carried out with a single-component refrigerant or a mixed refrigerant in a high temperature stage, and with a substantially isentropic expansion in a low temperature stage, and a non-liquefied part of the recycle gas after the expansion step is pressurized with a compressor and recycled along with a recycle stream of non-liquefied par of the feed natural gas, the liquefied part by the refrigerant exchanging heat with the non-liquefied part stream produced from the substantially isentropic expansion, in a plate-fin heat exchanger or the like. The compressor is driven by the power obtained by the substantially isentropic expansion.
Patent CA-2091724-C (CA)
Inventor: COSENZA FRANK J
IPC: B25B27/14
Filed: 1993-03-16
Granted: 2002-03-05
Abstract: A multi-purpose tool for inserting tanged or tangless mire inserts in a pre-threaded hole. In the case of a tangless insert, the tool nose passes freely through the internal diameter of the insert until a tool pail automatically engages a cut out formed in the tangless insert. Once the proper depth of the insert in the parent material has been achieved, the tool stops rotating and is reversed for proper disengagement, the installation being complete.      In the case of a tanged insert, the nose of the tool does not pass freely through the insert due to the presence of the tang that is blocking its way. As the tool rotates through the internal diameter of the insert, a ledge formed on the nose portion of the tool forces the insert to wind itself in the threads of the parent material. The pawl used to install the tangless insert is positioned directly behind the nose of the tool and remains inoperable in the retracted position since the insert does not have a cut out provided for it. After proper depth of the insert has been achieved, the tool stops rotating and is reversed for proper disengagement.
Patent CA-2093320-C (CA)
Title: Multilayer bottle and a method of manufacturing the same
Inventor: NISHIGAMI AKIRA
IPC: B05B11/00
Filed: 1992-08-05
Granted: 2005-02-01
Abstract: In a multilayer bottle having at least two layers including an outer layer and an inner layer according to the present invention, the inner layer and the outer layer adjacent thereto are separable from each other at a body of the bottle while the inner layer and the outer layer are adhered to each other at at least a part thereof in order to prevent the deformation of the bottle due to the reduction of a pressure in the bottle. When the pressure in the bottle reduces due to the volatilization of a content in the bottle or due to the discharge of the content by a pump and the like, the inner layer is separated from the outer layer and is crushed in the form of a bag, so that the outer layer is not deformed at all.
Patent CA-2094457-C (CA)
Title: Monoquaternary 2,16-bispiperidinylandrostane derivatives
Inventor: SLEIGH THOMAS
IPC: A61P21/00
Filed: 1993-04-20
Granted: 2003-12-09
Abstract: Monoquaternary 2,16-bispiperidinylandrostane neuro-muscular blocking derivatives having the formula:   (see Formula I) wherein R1 is ethyl;  R2 is methyl or allyl; and X- is a pharmaceutically acceptable anion: or pharmaceutically acceptable salts thereof.
Patent CA-2099675-C (CA)
Inventor: THICTHENER EDWARD PHILIP
IPC: B29C70/50
Filed: 1992-10-30
Granted: 1998-12-15
Abstract: An electrically conductive product of settable plastic material reinforced with non-conductive fibers is formed by drawing tows of non-conductive fibers through a bath of resin containing conductive fibers. Use of conductive fibers having a mean aspect ratio exceeding 100 permits the weight of conductive fibers to be under 2 %. Expulsion of resin during molding of a settable resin reinforced with fibers is prevented by pinching of the tows of fibers at least at one end of a die. This permits higher pressures to be used during molding.
Patent CA-2108170-C (CA)
Inventor: CHIENG PAUL C
IPC: C07K1/113
Filed: 1992-03-13
Granted: 2002-08-13
Abstract: In solid phase peptide synthesis, resin-bound peptide is treated with hydrogen fluoride so as to cleave the peptide from the resin and form a first mixture of peptide, hydrogen fluoride and resin. The resin is removed from the first mixture so as to pro-vide a resin-free second mixture including the polypeptide and the hydrogen fluoride. The polypeptide of the second mixture then is separated from the hydrogen fluoride.
Patent CA-2108310-C (CA)
Inventor: LUCERI THOMAS J
IPC: A61F13/56
Filed: 1993-10-13
Granted: 2005-01-25
Abstract: A disposable panty shield comprising a thin, highly absorbent pad having a body-contacting surface, an absorbent layer, a liquid barrier, a positioning means for attaching the pad to an undergarment, and a release layer to protect the positioning means prior to use where-in the pad has been densified by fusing all pad layers together in a manner such that the interstitial space between the individual fibers in the densified areas is not sufficient to readily allow fluid to flow through.      Further, the densified areas are made contiguous such that fluid, when introduced or deposited on the pad, will be prevented or hindered from flowing to the edges of the pad.
Patent CA-2112086-C (CA)
Title: Process for coating metal articles with polyolefin materials
Inventor: MARZOLA ROBERTO
IPC: C09D123/16
Filed: 1993-12-21
Granted: 2004-10-05
Abstract: Disclosed are metal articles coated with a polyolefin composition comprising by weight:      A) 30%-94% of a propylene homopolymer or random copolymer;    B) 0%-70% of an olefin elastomer;    C) 0.5%-10% of a polypropylene modified with polar groups;    D) 0%-0.5% of a nucleating agent; and E) 0%-10% of TiO2 said composition having a melt index ranging from 15 to 150 g/10 minutes and a specific particle size distribution.
Patent CA-2137823-C (CA)
Title: Method of making a printed circuit board
Inventor: KNOPP JOHN FREDERICK DAVID
IPC: H05K3/42
Filed: 1993-06-01
Granted: 2000-10-10
Abstract: A method is provided for making a plate through hole printed circuit board.  The method includes the first step of forming conductive circuit elements on two opposed faces of a non-conductive substrate. The substrate and circuit elements are coated with a de-sensitising material, the de-sensitising material comprising an alkali-strippable material. Holes are formed through the substrate, each hole passing through a circuit element on each of the opposed faces of the board. The board is treated to render the substrate which is exposed in the holes receptive to the action of a metallic plating solution. The de-sensitizing material is removed by treating the board with an alkaline accelerator solution to accelerate the action of the sensitisation and simultaneously to remove the de-sensitising material. The board is finally treated with an electroless metallic plating solution to deposit conductive metal in the holes to a desired thickness to provide an electrical connection through each hole between two opposed conductive circuit elements.