baber/WOPTO huggingface dataset:
Patent CA-2025944-A1 (CA)
Title: Automatic meter reading system with multitasking control
Inventor: SAADEH THERESA
IPC: H04M11/00
Filed: 1990-09-21
Abstract: AUTOMATIC METER READING SYSTEM   WITH MULTITASKING CONTROL                 ABSTRACT OF THE DISCLOSURE A meter reading system is provided in which a plurality of modems are connected to telephone lines and to a single computer which is operated through a stored program to sequentially perform portions of communication activities and portions of servicing activities in time-interleaved relation and in rapid sequence.  The communication activities include receiving meter data from and sending of control data to automatic meter readers. The servicing activities include maintenance of customer account records storage of received meter data and various other activities.  The system further includes provisions for sending wake-up tone signals to automatic meter readers.
Patent CA-2027883-A1 (CA)
Title: Diffusion-plasma-assisted chemical treatment apparatus
Inventor: CHARLET BARBARA
IPC: C23C16/50
Filed: 1990-10-17
Abstract: DESCRIPTIVE ABSTRACT      Diffusion plasma-assisted chemical treatment apparatus.            The apparatus comprises a tight treatment enclosure (10), means (20,22) for the axial production of a carrier gas plasma, a solid plate (30) serving as an obstacle to the plasma and located per-pendicular to the enclosure axis and downstream of the plasma production means, plasma diffusion means (40) located downstream of the obstacle plate, several non-ionized vector gas supply tubes (50) issuing axially into the enclosure beneath the diffusion means and all located in the same plane around the enclosure axis, a substrate carrier (56) positioned downstream of the vector gas supply tubes and perpendicular to the axis and annular pumping means (66,16) for the gaseous medium contained in the enclosure and positioned downstream of the substrate carrier.            (fig. 2).     B 10071.3 LC
Patent CA-2028290-A1 (CA)
Title: Tray, apparatus and method for propagating, growing and handling plants
Inventor: VAN WINGERDEN AART
IPC: A01G9/10
Filed: 1990-10-23
Abstract: There is provided an apparatus and method for propagating, growing and handling plants. A tray (10) is provided having a plurality of spaced apart elongated containers (12) which are removably attached to one another. Each container has a plurality of planting compartments (42) with adjacent planting compartments being separated by an air compartment (44) each having an elongated opening which permits the movement of air into the root system of a plant located in an adjacent compartment. The air compartments also provide for vertical airflow to the leafy parts of the plants. The elongated containers are readily separated from one another and reassembled using automated apparatus. The automated apparatus removes the plants from the container for grading, transplanting and/or packaging.
Patent CA-2029443-A1 (CA)
Inventor: MCILWRAITH GEORGE
IPC: H02B1/16
Filed: 1990-11-07
Abstract: An improved device for providing EMI/RFI shielding for a joint is disclosed comprising a compressible, resilient sealing element and a conductive shielding element bonded to the sealing element and positioned such that the shielding element provides a direct electrical contact across the joint. The disclosed invention further provides a cabinet which effectively utilizes such a device. The disclosed invention also includes an improved cabinet construction which minimizes the paths by which moisture and debris may enter the cabinet interior, while providing a cabinet which is transportable without violating the integrity of the cabinet structure.
Patent CA-2032605-A1 (CA)
Inventor: TALWAR ASHOK K
IPC: H01Q3/26
Filed: 1990-12-18
Abstract: A radio receiver having a narrow effective beamwidth includes a receiver antenna, a receiver and a receiver transmission line interconnecting the two, and an interference cancellation system having an auxiliary antenna, a first directional coupler connected to the auxiliary antenna, a second directional coupler connected to the receiver transmission line, a synchronous detector connected to the first and second directional couplers, a signal controller and a subtractor connected to the signal controller and to the receiver transmission line. The receiver antenna is selected to exhibit an omni-directional antenna pattern, while the auxiliary antenna is selected to exhibit a null in its antenna pattern. The null is directed toward the desired signal such that any signals outside of a predetermined angle from the center of the null will be cancelled by the interference cancellation system, and the desired signal which is received within a predetermined angle from the center of the null will be substantially unaffected by the interference cancellation system.
Patent CA-2033374-A1 (CA)
Title: Isoquinoline derivatives and salts thereof
Inventor: TAKESHITA YASUYOSHI
IPC: C07D217/26
Filed: 1990-12-28
Abstract: TITLE OF THE INVENTION     Novel Isoquinoline Derivatives and Salts Thereof ABSTRACT          The invention provides novel compounds and salts thereof, have the structure   wherein  R1  is  a guianidinobenzoyloxy group and  R2  is  a hydrogen  atom,  a hydroxy, cyano, -COR3 (wherein R3  is  an amino or lower alkyl group) or -COOR4 group [wherein R4 is a hydrogen  atom, lower alkyl, phenyl, benzyl  or  -CH2CONR5R6 group (wherein  R5  and R6 are the same  or  different  and selected from a hydrogen atom and lower alkyl groups)],  and wherein  R1  is a hydroxy group and wherein R2  is  a  -COR3 (wherein  R3  is an amino or lower alkyl  group)  or  -COOR4 group [wherein R4 is a (C1, C3 or C4) alkyl, phenyl,  benzyl or  -CH2CONR5R6  group (wherein R5 and R6 are  the  same  or different and selected from a hydrogen atom and lower  alkyl groups)].     The    compounds,    wherein    R1    is     a guanidinobenzoyloxy group, are useful protease inhibitors as anti-trypsin agents.
Patent CA-2033459-A1 (CA)
Title: Apparatus for controlling the reactive impedance of a transmission line
Inventor: NILSSON STIG L
IPC: H02J3/18
Filed: 1990-12-31
Abstract: Abstract of the Disclosure Apparatus for controlling the reactive impedance of a transmission line where capacitive reactance is inserted in series in the line to compensate inductive reactance includes a plurality of three or more capacitor modules connected to each other in series to form a series combination of capacitor modules.   Each module is individually bypassed by fast acting thyristor bypass switches so that a central automatic control system can selectively place all of the modules in series where a maximum compensation level is achieved (meaning that the total reactive impedance is at a minimum level), or to provide a minimum change with just one capacitor module.
Patent CA-2034671-A1 (CA)
IPC: H01L33/00
Filed: 1991-01-24
Abstract: Partially recessed microlenses are made in a substrate by a technique including the steps of forming a hard-baked patterned layer on a surface of the substrate, this patterned layer having at least one island portion surrounded by an auxiliary portion, and simultaneously etching this hard-baked patterned layer and the substrate to remove at least a portion of the thickness of the hard-baked layer. The island portions are located at areas overlying where microlenses are desired. The volume of the auxiliary portions of the hard-baked patterned layer is advantageously significantly greater than that of the island portions. Fully recessed microlenses are made by adding a step in the above technique, namely, the step of forming another hard-baked patterned layer covering only the auxiliary portions of the above-mentioned patterned layer prior to the etching.
Patent CA-2038607-A1 (CA)
Title: Toric pump
Inventor: SMITH JOHN E
IPC: F04D23/00
Filed: 1991-03-19
Abstract: A regenerative toric pump in which undesirable noise generation and leakage through clearance gaps between the impeller and housing is minimized includes an impeller having vanes lying in general planes radiating from the impeller axis disposed at variable spacings from each other in a geometrically balanced pattern. Recesses in one of opposed side surfaces on the impeller and housing are arranged in a pattern such as to minimize leakage through the clearance gap between those surfaces from points in the pump chamber which are at different pressures.
Patent CA-2039180-A1 (CA)
Title: Laminate and protective clothing fabricated therefrom
Inventor: REGLAND KLAS F
IPC: D06N3/12
Filed: 1990-08-29
Abstract: ABSTRACT     A laminate and a protective garment resistant to the permeation of chemicals have a fabric base sheet and con-tinuous impervious layers supported by the base sheet and comprising layers of fluoropolymer and butyl rubber. Ac-cording to the invention, the laminate and the protective garment also include a continuous polyamide layer.
Patent CA-2039202-A1 (CA)
Title: Roof safety anchor
Inventor: CODY PERVANEH
IPC: A62B35/04
Filed: 1991-03-27
Abstract: ABSTRACT          The present invention is directed to a safety anchor for mounting on the roof of a building.  The safety anchor comprises an anchor member and a base for supporting the anchor member.  The anchor member is provided with a closed loop extending from the base for attachment of the safety line and an elongate securing member in contact with the surface of the base.  The anchor member is attached to the base by a plurality of points of attachment between the elongate securing member and the surface of the base.  In a preferred embodiment of the invention, the anchor member is a U-shaped member securely attached to the base by a plurality of points of attachment between the arms of the anchor member and the surface of the base.  The closed loop extending from the base is defined by the interior periphery of the anchor member extending from the base and the exterior periphery of the base between the arms of the anchor member.  The safety anchor of the present invention provides for a secure anchor means for attachment of safety ropes, the elongate securing member of the anchor member resulting in the safety anchor having high tensile strength and high resistance to lateral and shear forces.
Patent CA-2040042-A1 (CA)
Inventor: RAITH ALEX K
IPC: H04W16/14
Filed: 1991-04-09
Abstract: A mobile telephony system includes an internal sub-system, which is installed in a building and an external part-system. The internal sub-system has internal base stations which are connected to a mobile switching centre, to which external base stations are also connected.  The mobile telephony system is assigned a frequency band which comprises a plurality of channels.  The external part-system is divided into cells and has fixed channel assignment with a few channels to each external base stations.  The internal sub-system is adaptive and the internal base stations have access to all channels of the system.  In order to determine whether a mobile station belongs to the internal or to the external part-system, an internal identification word is transmitted from the internal base stations and an external identification word is transmitted from the external base stations.  When the signal strength of the internal identification word exceeds a threshold value, the mobile station transmits an internal identification word to the internal base stations.  If the signal strength falls beneath this threshold value, the mobile station identifies itself to the external part-system.
Patent CA-2041385-A1 (CA)
Title: Safety electrolyte solvent and electrochemical cells containing a safety electrolyte solvent
Inventor: WILKINSON DAVID
IPC: H01M4/50
Filed: 1991-04-29
Abstract: ABSTRACT OF THE DISCLOSURE The present invention is an electrolyte which provides superior safety characteristics on cells using the electrolyte. The electrolyte allows for the preparation of cells having acceptable performance when placed in environments where safety concerns are paramount.
Patent CA-2043367-A1 (CA)
Title: Dioxo-tetrahydroquinoline derivatives
Inventor: BAKER RAYMOND
IPC: C07D413/06
Filed: 1991-05-28
Abstract: ABSTRACT            DIOXO-TETRAXYDROQUINOLINE DERIVATIVES           A class of 2,4-dioxo-1,2,3,4-tetrahydro-quinoline derivatives, substituted at the 3-position by a range of carbonyl-containing substituents or by a five-or six-membered heteroaromatic moiety, are selective non-competitive antagonists of NMDA receptors and/or are antagonists of AMPA receptors, and are therefore of utility in the treatment of conditions, such as neurodegenerative disorders, convulsions or schizophrenia, which require the administration of an NMDA and/or AMPA antagonist.
Patent CA-2045099-A1 (CA)
Inventor: PINO WILTON J
IPC: F16K31/385
Filed: 1991-06-20
Abstract: A flush control assembly for delaying the flush cycle of pressure flush valves far use on plumbing fixtures. The flush control assembly attaches to, and becomes an integral working part of the flush valve and contains a delaying means which is actuated by water pressure differentials in the flush valve.
Patent CA-2045792-A1 (CA)
Inventor: FOURNIER CLAUDE
IPC: D05B35/00
Filed: 1991-06-27
Abstract: A system for handling flexible articles such as tubular hosiery blanks each having a toe portion and a welt or band portion and for subsequently closing the toe portions includes an assembly for retrieving randomly oriented blanks from a supply reservoir, pneumatic feed means for displacing the blanks to a magazine, means for selectively displacing the blanks from the magazine such that the toe portion is always first, means for opening the band portion and positioning the band portion on fingers which expand and convey the blank to a transport tube of a toe closing assembly.  The blank is inverted on the transport tube and the toe portion subsequently sewn.
Patent CA-2049165-A1 (CA)
Title: Method for stabilizing sodium dithionite
Inventor: OGLESBY DONALD M
IPC: C01B17/66
Filed: 1991-08-14
Abstract: ABSTRACT         A Method of stabilizing sodium dithionite is disclosed which comprises exposing a quantity of sodium dithionite to a quantity of amino material under pressure 3 wherein the partial pressure of amino material is at least 0.5 atmospheres.
Patent CA-2049915-A1 (CA)
Title: Multi-roll calender with adjustable linear force
Inventor: SCHIEL CHRISTIAN
IPC: D21G1/00
Filed: 1991-08-26
Abstract: MULTI-ROLL CALENDER WITH ADJUSTABLE LINEAR FORCE            ABSTRACT OF THE DISCLOSURE         A multi-roll calender for treating a web material, of the type which develops a linear force, has at least two rolls stacked one above the other in a press plane.  A lower roll is constituted as a sag-compensation roll.  The other rolls in the calender stack are all equidistant relative to the sag-compensation roll, i.e., they are supported the same distance away from the two supports of the rolls.  One of the outermost rolls (either the top or the bottom roll) is fixed in a stand while all the other rolls are movably mounted.  The moveable rolls can be acted upon by support forces acting in the plane of the stack.  The support forces and the internal pressure of the sag-compensation roll are adjustable via a control device, e.g., a computer, so that even when the rolls sag, the linear force distribution of the rolls is identical over their width.
Patent CA-2052090-A1 (CA)
Title: Automatic pin setter
IPC: A63D5/08
Filed: 1991-09-24
Abstract: In  a  bowling  game,  an  apparatus  to  automatically retrieve knocked down tenpins from the skittle alley,  after each ball strike  aimed thereat.   The  apparatus includes a series of cables each connected to the head of a  corresponding one  of the tenpins.    The  cables  are  connected  to a computer controlled slider, guidingly carried by a horizontal  rail and  power driven in reciprocating  motion by  an endless  belt.  Once at least one tenpin is struck by a  ball,  all  tenpins  are  lifted  by their cables through actuation of the motor of the power driven endless belt.   The slider  then returns  to its  initial position, which will enable  the cables to yield to the weight bias of their pins and therefore allow all of the latter - but for  the knocked down tenpin - to fall back to their upstanding position on the skittle alley.  The knocked-down  pin  has  been  identified  by optical sensors  connected  to  the  computer, and the computer will have actuated a cam-type cable lock to prevent release  of the knocked down pin cable under the weight of this latter pin.
Patent CA-2053179-A1 (CA)
Title: Process for removing iodide compounds from carboxylic acide and/or anhydrides
Inventor: JONES MICHAEL D
IPC: C07C53/08
Filed: 1991-10-15
Abstract: Case 7621(2) ABSTRACT OF THE DISCLOSURE            PROCESS FOR REMOVING IODIDE COMPOUNDS FROM CARBOXYLIC ACIDS                    AND/OR ANHYDRIDES      A process for removing iodide compounds from a liquid carboxylic acid, such as acetic acid and/or its corresponding carboxylic acid anhydride by contacting the liquid with an ion exchange resin having functional groups which each have at least one sulphur donor atom and at least one percent of which are occupied by silver, palladium and/or mercury.  Suitable resin functional groups include thiol and substituted thiol groups.
Patent CA-2053504-A1 (CA)
Inventor: BHAT DINESH M
IPC: C02F11/12
Filed: 1991-10-16
Abstract: Surfactant is recovered from the foamed aqueous admixture recovered from a fibrous web forming process by draining surfactant-depleted liquid from the foamed aqueous admixture thereby forming a surfactant-enriched foam, separating the surfactant-depleted liquid from the surfactant-enriched foam and recycling surfactant from the surfactant-enriched foam to the fibrous web forming process in the form of a stream having a surfactant concentration exceeding that of the foamed aqueous admixture. The recycle stream may be obtained by removing air from the surfactant-enriched foam. Surfactant may also be recovered from the surfactant-depleted stream by aerating it to form a foam from which surfactant-lean liquid is drained. The process may be repeated on the surfactant-lean liquid until the surfactant content of the finally obtained lean liquid is sufficiently low to permit discharge to the environment.
Patent CA-2054675-A1 (CA)
Inventor: JONES FREDERICK P
IPC: H01L27/02
Filed: 1991-10-31
Abstract: ABSTRACT OF THE INVENTION     A power MOS transistor,  including source,  drain,  and gate electrodes, comprises a substrate of a semiconductor material of one conductivity type having first and second opposed surfaces; a drain region extending through the substrate between the surfaces; a plurality of spaced body regions of the opposite conductivity type extending into the substrate from the first surface; and a source region of the one conductivity type extending into the substrate from the first surface within each of the body regions, the interface of each of the source regions with its respective body region at the first surface being spaced from the interface of its respective body region and the drain region at the first surface to form a channel region therebetween.  A gate electrode overlies and is insulated from the first surface and extends across the channel regions.  A conductive electrode extends over and is insulated from the gate electrode, and contacts at least a portion of the source regions.   A current limiting circuit is coupled between the conductive electrode and the gate electrode and a voltage limiting circuit is coupled between the drain electrode and the gate electrode.
Patent CA-2055808-A1 (CA)
Title: Tank having a low unit weight namely for storing pressurized fluids and process for manufacturing such
Inventor: HUVEY MICHEL
IPC: B29D22/00
Filed: 1991-11-19
Abstract: The present invention describes a vessel for fluids under pressure and a method for manufacturing it. The vessel is composed of two bottoms (3, 4) separated by a corrugated cylindrical zone (2), the corrugated cylindrical zone being strengthened circumferentially, and of a longitudinal reinforcement (7) which is placed on the outer structure of the vessel as a whole and which, by absorbing the bottom effect, makes it possible to reduce the thickness of the bottoms and make the vessel lighter. <IMAGE>
Patent CA-2057274-A1 (CA)
Inventor: JIN SUNGHO
IPC: C01G29/00
Filed: 1991-12-09
Abstract: A method of making a ribbon-like or sheet-like superconducting composite body is disclosed.  The method is well suited for making long lengths (e.g., >100m) of ribbon or large areas (e.g., >100cm2) of sheet-like composite.  The method comprises forming a Bi-Sr-Ca-Cu-oxide-containing layer on a metal (exemplarily Ag) substrate, and mechanically deforming (typically by rolling) the thus formed composite such that the oxide is densified to more than 80% of the theoretical density.  Subsequently the oxide layer is at least partially melted and allowed to re-solidify such that a large portion of the oxide crystals has c-axis alignment.  After appropriate heat treatment in an O2-containing atmosphere, thus produced superconductor ribbons or sheets can have high Jc ( 104, frequently > 105 A/cm2) for temperatures less than about 20K and in magnetic fields less than about 5T.
Patent CA-2057526-A1 (CA)
Title: Method for purifying ethylene-.alpha.-olefin copolymer
Inventor: YAMAMOTO KEISAKU
IPC: C08F6/02
Filed: 1991-12-12
Abstract: ABSTRACT OF THE DISCLOSURE        A method  for  purifying  an  ethylene-.alpha.-olefin copolymer obtained by polymerizing ethylene with an .alpha.-olefin having at least 3 carbon atoms, or ethylene with an .alpha.-olefin having at least 3 carbon atoms and a non-conjugated diene compound,  in a hydrocarbon solvent in the  presence  of  a  catalyst  comprising  a  vanadium compound, an organoaluminum compound, and a halogenated ester compound,  the method including a step of mixing and  stirring  the  polymerization  reaction  mixture obtained by the polymerization reaction in an aqueous alkaline  solution  in  such  an  amount  as  to  give  an aqueous phase having a pH of not lower than 10.0 after mixing  and  stirring,  is  disclosed.    A method  for purifying  an  ethylene-.alpha.-olefin  copolymer  is  also disclosed, including a step of an oxidation treatment of the  polymerization  reaction  mixture  in  an  aqueous alkaline  solution  in  such  an  amount  as  to  give  an aqueous phase having a pH of not lower than 10.0 after the oxidation treatment.
Patent CA-2058246-A1 (CA)
Title: Process for the production of highly pure hydrogen (h2) at high output pressures
Inventor: KURZEJA KLAUS
IPC: C01B3/48
Filed: 1991-12-20
Abstract: ABSTRACT      In the disclosed process, molecular sieves are used in a pressure swing adsorption (PSA) process under high pressure for the production of highly pure hydrogen at high output pressures within synthesis gases producing installations including integrated high pressure syntheses.  In order to make the overall process more flexibly operable and more energy efficient, the high pressure molecular sieves are used in the PSA process at starting pressures of 100 to 220 and preferably 150 to 200 bar.  Therefore, synthesis gas may be energy efficiently directly fed to the PSA process for the production of high pressure highly pure hydrogen at the reaction pressure of a subsequent high pressure synthesis wherein the highly pure hydrogen is used, thereby obviating the depressurization of the synthesis gas before the PSA process and pressurization of the obtained pure hydrogen gas before input to the high pressure synthesis.