baber/WOPTO huggingface dataset:
Patent CA-2017710-A1 (CA)
Inventor: PETERSON SCOTT W
IPC: B24D3/00
Filed: 1990-05-29
Abstract: ABSTRACT OF THE DISCLOSURE            This invention relates to coated abrasive articles, and more particularly, to coated abrasive articles that can be adhered to abrading equipment by means of a pressure-sensitive adhesive.  Coated abrasive aticles are used to abrade a wide variety of workpieces.  Particles from the workpiece undergoing abrasion become lodged between the abrasive grains, thereby reducing the cutting ability of the coated abrasive, even though the abrasive grains are not worn.  This loading, which substantially reduces the useful life of a coated abrasive article, has been addressed with laoding resistant coatings.  There is a tendency for conventional loading resistant coatings to transfer from the grain-bearing surface of one coated abrasive disc to the pressure-sensitive adhesive surface of another coated abrasive disc when the discs are disposed in a package.  If the loading resistant coating does transfer, it significantly reduces the adhesion characterisitcs of the pressure-sensitive adhesive.  This invention provides a coated abrasive article comprising a backing bearing on one major surface thereof a layer of abrasive grains overcoated with a loading resistant coating and on the other major surface thereof a layer of pressure-sensitive adhesive.  The loading resistant coating comprises a lithium salt of a fatty acid.  It may also contain additives selected from the group consisting of surfactants, wetting agents, binders, anti-foaming agents, fillers, plasticizers, and mixtures thereof.  The use of a lithium salt of a fatty acid significantly reduces the amount of transfer between the loading resistant coating of a first coated abrasive article and the pressure-sensitive adhesive layer of a second coated abrasive article disposed within the same package.
Patent CA-2018208-A1 (CA)
IPC: H05K3/10
Filed: 1990-06-04
Abstract: A method of manufacturing printed circuit boards is disclosed wherein metallic conductive structures are produced in a desired pattern on a carrier board of isolating material.   The method begins with the provision of a carrier board having a metal foil laminated to its surface and thereafter forming conductive traces on the carrier board, deactivating the carrier board to remove substantially all substances deposited on the carrier board other than the conductive traces and forming final conductive structures by  electroless  chemical  metal  deposition  on  the  pattern  of conductive traces.  Circuit boards manufactured in accordance with such a method will have final conductor structures with base layer portions of the original laminated  metal foil.  In a preferred embodiment, the step of deactivating the carrier board involves rinsing the carrier board with hydrochloric acid.  The method can be used  for manufacturing  single-layer or multilayer printed circuit boards with or without through-holes and permits the formation of conductor structures in the range of 50 micrometers or less.
Patent CA-2018395-A1 (CA)
Title: Multiplexed signal transmitter and multiplexed signal receiver
Inventor: SAKAMOTO NORIYA
IPC: H04N7/00
Filed: 1990-06-06
Abstract: Abstract of the Disclosure A main signal as the existing television signal and a helper signal for high definition are prepared in a transmitter.  The energy of the main signal for a plu-rality of pixels is sequentially detected by an energy detector constituted by an absolute value circuit and an accumulator.  The helper signal is controlled by a level controller, constituted by an adder and a divider, in such a way that its level follows according to the level of the detected energy.  The level-controlled helper signal is frequency-multiplexed with the main signal having a frequency band of a removed region by a fre-quency multiplexer.  A frequency-multiplexed signal separator of a receiver separates the multiplexed signal into the main signal and the helper signal.  The energy of the separated main signal for a plurality of pixels is sequentially detected by an energy detector consti-tuted by an absolute value circuit and an accumulator. The separated helper signal has its frequency band restored to the original band from the removed region by a frequency domain restoring circuit.  The restored helper signal is subjected to level control by a level controller, constituted by an adder and a multiplier, in the opposite characteristic to that of the sender side in accordance with the level of the detected energy.
Patent CA-2020303-A1 (CA)
Title: Cytokines
Inventor: ODINK KAREL GERRIT
IPC: C07K16/00
Filed: 1990-07-03
Abstract: 4- 17645/+     Novel cytokines Abstract of the disclosure The invention concerns polypeptides with an apparent molecular weight of around 160 kD which are mediators or precursors for mediators of inflammation, derivatives thereof such as mutants and fragments, processes for their preparation, DNAs and hybrid vectors coding for said polypeptides and derivatives and host cells transformed with such hybrid vectors, polyclonal and monoclonal antibodies specific for said polypeptides or their derivatives and antibody derivatives as well as diagnostic and therapeutic methods for inflammatory conditions and Hodgkin lymphomas.
Patent CA-2020501-A1 (CA)
Title: Process for the production of metal-oxide aerosols for fuel emissions control
Inventor: GOMEZ CEBERS O
IPC: C01D1/02
Filed: 1990-07-05
Abstract: ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the production of a metal-oxide aerosol and a process for utilizing the metal-oxide aerosol as an effluent sorbent.  The process for producing the metal-oxide aerosol comprises vaporizing the elemental metal in an oxidant free environment under controlled conditions and thereafter oxidizing said vaporized metal under controlled conditions to form an aerosol of said metal-oxide in a carrier gas stream.  The aerosol may thereafter be fed to an effluent containing gaseous stream for removal of effluents under controlled temperature conditions.
Patent CA-2023071-A1 (CA)
Title: Closure and control element for a metallurgical vessel
Inventor: HINTZEN ULLRICH
IPC: B22D41/14
Filed: 1990-08-10
Abstract: ABSTRACT         A closure and control element (1) of a metallurgical vessel has a fixed inner tube (2) and an outer tube (3) which is movable relative to it.  In order to produce emergency closure characteristics, the possible closure stroke of the outer tube (3) is so large that a closed position may be reached in which an end edge (8) of the lower end of the outer tube (3) seats against an annular surface (10) in the plane of the base (4).
Patent CA-2030500-A1 (CA)
Title: Mobile ballast regulating machine
Inventor: MOHR PIERRE
IPC: E01B27/02
Filed: 1990-11-21
Abstract: A mobile ballast regulating machine comprises a machine frame supported by undercarriages on the track for mobility therealong in an operating direction, a vertically adjustable ballast plow arrangement comprising a substantially vertical ballast damming wall extending transversely to the longitudinal extension of the machine frame to the opposite machine frame sides, a respective ballast guide plate associated with the damming wall at each machine frame side, each guide plate being adjustable to define a desired angle with the respective machine frame side, and a cover plate preceding the damming wall in the operating direction and connected to the damming wall, the cover plate extending substantially parallel to a plane defined by the track and immediately above the running surfaces of the rails, and the cover plate including opposite ends associated with the rails and extending in the direction of the longitudinal machine frame extension, each cover plate end projecting obliquely downwardly towards the base of the rail associated therewith along the field side thereof, and drives vertically adjustably connecting the ballast plow arrangement to the machine frame.
Patent CA-2030779-A1 (CA)
Inventor: DAVIES HUW M
IPC: C12N15/82
Filed: 1990-04-11
Abstract: 2030779 9011770 PCTABS00002 The present invention is directed to the application of an animal-derived Anti-Microbial Peptide ("AMP") to the control of microbes associated with plant disease. Specifically, it has been found that the cytotoxic effects of AMP's, such as defensins and/or magainins, can be successfully used to limit the growth of bacterial and fungal pathogens associated with plant diseases.
Patent CA-2032420-A1 (CA)
Title: Guanidinobenzene derivatives
Inventor: OKUYAMA AKIRA
IPC: C07C279/18
Filed: 1990-12-17
Abstract: GUANIDINOBENZENE DERIVATIVES              ABSTRACT OF THE DISCLOSURE      A guanidinobenzene derivative represented by the formula (I):                                    (I) wherein R1 represents a substituent selected from the group consisting of a phenyl group substituted by an amidino group and a naphthyl group substituted by an amidino group, and salt thereof; a process for the production thereof; and an a:ntiviral pharmaceutical composition comprising the compound.
Patent CA-2033026-A1 (CA)
Inventor: BOON ARIE J
IPC: E01C19/10
Filed: 1990-12-21
Abstract: Method and apparatus for producing mixtures containing bitumen, in which the material to be treated is conveyed by the force of gravity through a slit-type space between two vertically arranged heated surfaces (3,4). <IMAGE>
Patent CA-2033124-A1 (CA)
Title: Apparatus for homogenising the non-homogeneous light distribution of a laser beam
Inventor: VAN DEN BERGH HUBERT
IPC: A61B18/20
Filed: 1990-12-24
Abstract: An apparatus for precise, homogeneous and sharp-edged irradiation of a large area with the light of a laser beam (5), which can be used especially for large-area photodynamic therapy, is provided with a multimode fibre (10), which is illuminated by the laser beam by way of a microscope objective (4) and has a length of approximatley 5 metres, and the end face (13) of which is imaged onto an irradiated area (7) of a working surface (6) by means of a microscope (17).
Patent CA-2033465-A1 (CA)
Title: Error trapping decoding method and apparatus
Inventor: WENG LIH-JYH
IPC: H03M13/15
Filed: 1990-12-31
Abstract: ABSTRACT     An error correction system generates a residue for data symbols encoded in accordance with an (n,k) code which has a distance "d" and a generator polynomial g(x).  If the residue contains fewer than "T" non-zero symbols, where T < d/2, the data symbols are assumed to be error free.  If there are T or more non-zero symbols, the data symbols, the data symbols are assumed to contain errors and the residue symbols are manipulated to correct the errors, if possible.  The residue symbols are thus encoded using an encoder constructed in accordance with the generator polynomial g(x) by loading the residue symbols and shifting the encoder "m" times, where m is a factor of k.  The number of non-zero symbols are then counted.  If there are fewer than T non-zero symbols in the encoded residue, the encoded symbols are combined with the corresponding symbols in the code word.  Thus the first encoded residue symbol is combined with the mth code word symbol, the second residue symbol is combined with the m+1st code word symbol, et cetera.  If there are more than T non-zero symbols, the residue symbols are again encoded by shifting the encoder another m times, and so forth.  The encoder may include feedback paths which allow it to encode the symbols in one shift the equivalent of i shifts of a conventional encoder, where i < m.  Each feedback path includes multipliers which are associated with the expression xr-ij modulo g(x), where r is the number of residue symbols and j = 1,2...,i.
Patent CA-2033787-A1 (CA)
Title: Crosslinked carboxylic copolymers useful as thickeners
Inventor: SANTHANAM MAHALINGAM
IPC: C08F222/10
Filed: 1991-01-08
Abstract: The present invention relates to crosslinked carboxylic copolymers useful as thickeners comprising an unsaturated carboxylic acid; a crosslinking monomer selected from the group consisting of triallylisocyanurate, triallyl trimellitate, glyoxal bis(diallyl acetal), trivinylcyclohexane, and triallylcyanurate; and optionally a comonomer containing a polymerizable ethylenically unsaturated group and/or an ethoxylated glyceride compound.
Patent CA-2036369-A1 (CA)
Inventor: COX STEVEN W
IPC: G05B15/02
Filed: 1991-02-14
Abstract: A control system for a patterning device which provides a method for sequentially loading look-up tables, representing pattern conversion values for different patterns to be printed in sequence, into a patterning device in real time.          The system also provides a method for reloading a particular look-up table or group of look-up tables in a prioritized sequence as necessary in order to change the characteristics of the pattern or patterns represented by the table or tables.
Patent CA-2037742-A1 (CA)
Inventor: WRIGHT MICHAEL L
IPC: H01M4/64
Filed: 1991-03-07
Abstract: A high temperature rechargeable electrochemical cell which comprises a cell housing divided by a separator into an anode compartment and a cathode compartment. The anode compartment contains an active anode substance which is a molten alkali metal M, the separator being capable of conducting ions of the alkali metal of the anode therethrough. The cathode compartment contains a cathode comprising an electronically conductive electrolyte-permeable porous matrix having,  dispersed therein,   a solid active cathode substance the matrix being impregnated with a molten salt electrolyte.  The cathode comprises also, in contact with the matrix, a porous, electrolyte-permeable reservoir of material which is electrochemically and chemically inert in the cathode environment, said reservoir having an ability to wick the molten salt electrolyte at the operating temperature of the cell which ability is less than the ability of the matrix to wick said molten salt electrolyte.
Patent CA-2038741-A1 (CA)
Title: Antiviral deoxynojirimycin derivatives
Inventor: ROEBEN WOLFGANG
IPC: C07D491/056
Filed: 1991-03-21
Abstract: ABSTRACT            Antiviral deoxynojirimycin derivatives of the formula   in which R1   represents hydrogen or represents straight-chain or branched alkyl, alkenyl or alkadienyl in each case having up to 10 carbon atoms which are optionally substituted, and R2, R3, R4 and R5 are identical or different and represent hydrogen, or represent a group of the formula -CO-R8, or R2 and R3, R3 and R4 or R5 together represent a radical of the formula  ,   or   in which n    denotes the number 1 or 2, and R9, R10, R11 and R12 are identical or different and denote straight-chain or branched alkyl having up to 8 carbon atoms, or phenyl which is in turn substituted by straight-chain or branched alkyl having up to 8 carbon atoms, and their physiologically acceptable salts.
Patent CA-2040994-A1 (CA)
Inventor: NGO DAVID D
IPC: G03F7/038
Filed: 1991-04-23
Abstract: Abstract  Of the Invention A photoimageable polyimide coating which can be prepared from the polymeric condensation product of 6FDA, DMDE or MEDA, and a photosensitizing moiety.  More particularly, the present invention relates to a photoimageable polyimide coating useful for microelectronic applications.     28,188R4
Patent CA-2042562-A1 (CA)
Title: Fuel feed system
Inventor: OLSON JEFFREY A
IPC: F02M37/00
Filed: 1991-05-14
Abstract: ABSTRACT OF DISCLOSURE        The invention provides a fuel feed system for an internal combustion engine, the system including a vapor separator having a wall defining a fuel chamber adapted to contain a supply of fuel and having therein an inlet, an outlet and a fuel vapor outlet, and a float valve for affording communication between the fuel vapor outlet and the chamber when the supply of fuel is below a predetermined level, the float valve including a spring engaged with a valve member for applying constant force to the valve member when the valve is closed.
Patent CA-2042931-A1 (CA)
Title: Fluorinated bis (hydroxymethyl) cyclobutyl purines and pyrimidines
Inventor: ZAHLER ROBERT
IPC: C07D473/28
Filed: 1991-05-21
Abstract: GY18b  Antiviral activity is exhibited by compounds having the formula  and its pharmaceutically acceptable salts wherein R1 is  , GY18b  ,  GY18b wherein R2 is hydrogen, methyl, fluoro, chloro, bromo, iodo, hydroxy or amino; R3 is fluoro, chloro, bromo, iodo, hydrogen, methyl, trifluoromethyl, ethyl, n- propyl, 2-fluoroethyl, 2-chloro-ethyl, or  wherein R4 is chloro, bromo, iodo, hydrogen, methyl or trifluoromethyl; R5 is alkyl; R6 is hydrogen, alkyl, substituted alkyl, or aryl; and R7 and R8 are independently hydrogen, -PO3H2 or               .
Patent CA-2047928-A1 (CA)
Title: Method and apparatus for washing dishes, sticking inhibitor and rinsing assistant
Inventor: NOGI MUNEHIRO
IPC: C11D1/00
Filed: 1991-07-25
Abstract: - i -ABSTRACT OF THE DISCLOSURE              There  is  provided  a  dish  washing  method  which includes a process for applying a sticking inhibitor to surface of dishes in order to make it easy to remove food from the surface of the dishes.   The sticking inhibitor is a compound having  hydrophilic  and  hydrophobic  groups.    The  compound  is absorbed  to  the  surfaces  of  the  dishes  by  the  hydrophilic groups,  and is  absorbed to food surfaces by the hydrophobic groups.   The compound is a compound containing a fluoroalkyl group.  Also, a dish washer has a reservoir for storing therein the sticking inhibitor and a passageway for joining the sticking inhibitor with a detergent.
Patent CA-2048842-A1 (CA)
Inventor: GEISEN KARL
IPC: A61P3/08
Filed: 1991-08-09
Abstract: Substituted pyrimidine derivatives, a process for the preparation thereof and the use thereof as reagents Pyrimidine derivatives of the formula I    in which R1, R2, X and Y have the stated meaning, the salts thereof and a process for the preparation thereof are described. Because of their sorbitol-accumulating activity, they are suitable fox use as reagents for an advantageous pharmacological screening model for testing aldose reductase inhibitors.
Patent CA-2049782-A1 (CA)
Inventor: SAMUELSON BRUCE E
IPC: B43M5/02
Filed: 1991-08-23
Abstract: D.N. 45292 CAN 5A ABSTRACT     The invention comprises a hub (106; 106A; 206) with a longitudinal axis defining an axial direction for use in a refillable tape dispenser (100; 101; 200; 400) including a housing (102; 102A; 202; 402) with a sidewall (104; 104A; 204; 404).  The hub comprises inner and outer surfaces, a first end fixed to the side wall (104; 104A; 204; 404), and first and second opposed flexible portions (116, 118; 116A, 118A; 220, 222; 420, 422) having distal ends remote from the side wall (104; 104A; 204; 404).  The first and second opposed flexible portions (116, 118; 116A, 118A; 220, 222; 420, 422) project axially from the side wall (104; 104A; 204; 404), and the flexible portions have generally axially extending side surfaces.  The hub also includes retaining lugs (131, 132; 131A, 132A; 231, 232; 431, 432) at the distal end of the flexible portions (116, 118; 116A, 118A; 220, 222; 420, 422).  The retaining lugs have a remote end spaced axially from the flexible portion.  The retaining lugs have a first retaining surface (140, 142; 140A, 142A; 240, 242) adjacent the flexible portion projecting radially outward of the flexible portion and have an outer edge (75, 77; 75A, 77A; 275, 277); and a second retaining surface (141, 143; 141A, 143A; 241, 243) adjacent the flexible portion projecting radially inward of the flexible portion and have an inner edge (74, 76; 74A, 76A; 274, 276).  The retaining lugs (131, 132; 131A, 132A; 231, 232; 431, 432) also have cam surfaces (161, 162, 165, 166; 151, 152, 153, 154; 261, 262, 265, 266) diverging from the remote end of the retaining lugs (131, 132; 131A, 132A; 231, 232; 431, 432) toward the edges (75, 77; 75A, 77A; 275, 277; 74, 76; 74A, 76A; 274, 276) of the first and second retaining surfaces of the retaining lugs.  In another embodiment of the invention, the hub includes ribs (450) at the distal end of each of the flexible portions (420, 422) which project radially outward of the flexible portions (420, 422) and have axially extending arcuate bearing surfaces (452).  The hubs (106; 106A; 206) for tape dispensers (100; 101; 200; 400) according to the present invention restrict backcard (300A, 300B, 300C, 370) separation from the dispenser (100; 101; 200; 400), and restrict backcard rotation relative to the dispenser (400) to afford proper presentation to the consumer.            Preferred Figure = Figure 16
Patent CA-2049789-A1 (CA)
Title: Apparatus for heating tissue with a photoplethysmograph sensor
Inventor: JONES PAUL H
IPC: A61B5/00
Filed: 1991-08-23
Abstract: METHOD AND APPARATUS FOR HEATING TISSUE       USING A SEMICONDUCTOR DEVICE                   Abstract of the Disclosure A method and apparatus for increasing the blood flow in  a  patient's  tissue  by  warming the  tissue  with  heat generated by a semiconductor device mounted in a sensor.  The amount of heat generated is controlled by varying either the magnitude or the duty cycle of the current that flows through the semiconductor device,  with the amount of heat required determined by either the temperature of the sensor's contact surface or the operating performance of the apparatus.
Patent CA-2051119-A1 (CA)
Title: Use of fluid insoluble oxidizing agents to eliminate interfering substances in oxidation-reduction measuring systems
Inventor: JOHNSTON JAMES B
IPC: C12Q1/26
Filed: 1990-04-12
Abstract: Systems and methods are disclosed for removing redox-active substances from aqueous, partially aqueous or non-aqueous fluids. The invention involves contacting the fluid to be treated with a redox-active agent that is insoluble in the fluid, thereby oxidizing interfering redox-active substances. Electron transfer agents can also be employed. The residual redox oxidizing agent is removed from the treated fluid on the basis of its insolubility, so that no residual redox activity remains. The invention is useful for removal of interfering redox-active substances from liquid samples when analytes in the sample are to be measured using reduction-oxidation chemistry and the redox-active interfering substances removed by the disclosed method interfere in the reduction-oxidation analysis. Furthermore, this invention is especially useful to pretreat blood, serum, plasma or other bodily fluids prior to analysis or other use of these fluids, where the presence of reduction-oxidation active substances constitutes an interference in that analysis or use.
Patent CA-2053027-A1 (CA)
Title: Live load packing system
Inventor: WEARS WILLIAM E
IPC: F16K41/04
Filed: 1991-10-08
Abstract: An improved live load packing system for sealing an operating valve member in a fluid valve. A packing follower includes a base and a guide sleeve adapted for slidable engagement on the operating valve member. A series of Belleville disk springs slidably engage the guide sleeve and maintain concentric mounting during loading of V-type TFE packing members to ensure uniform concentric spring loading and to prevent undesired side loading.
Patent CA-2055183-A1 (CA)
Inventor: HARLAUX GINETTE
IPC: A23L15/00
Filed: 1991-11-08
Abstract: After the incorporation of water and starches in a mass of eggs, the product obtained is homogenized and then placed in an enclosure (1) where steam under pressure is injected into the mass of scrambled eggs containing added water and starch, the enclosure being additionally heated through its wall (2).    Application to the production of a mass of scrambled eggs  coagulated to  a homogeneous  and controlled  level intended for incorporation in a dish for subsequent deep-freezing.