baber/WOPTO huggingface dataset:
Patent CA-2022815-A1 (CA)
Title: Process for preparing a vanadium-based catalyst suitable for olefin polymerisation
Inventor: BAILLY JEAN-CLAUDE A
IPC: C08F4/68
Filed: 1990-08-07
Abstract: The present invention relates to a proces for preparing a Ziegler-Natta type catalyst based on a vanadium compound precipitated on a MgCl2 spherical support. The catalyst preparation consists of contacting within a liquid hydrocarbon a vanadium-reducing agent chosen from organometallic compounds with a vanadium compound soluble in the liquid hydrocarbon containing at least one halogen and one alkoxy group, and with a support containing (i) MgCl2 free from Mg-C bond and (ii) an organic electron donor compound free from labile hydrogen. The support consists of spherical particles having a well-defined diameter and a narrow particle size distribution. The catalyst is particularly suitable for manufacturing in a gas phase process elastomeric copolymers of propylene.
Patent CA-2023161-A1 (CA)
Title: Method and system for measuring the corrosion properties of specimens
Inventor: AALTONEN PERTTI
IPC: G01N27/416
Filed: 1990-08-13
Abstract: ABSTRACT           The invention concerns a specimen testing procedure for studying the corrosion properties of the specimen.  As taught by the  invention,  in the procedure are employed at least two specimens at different potentials, one of them being used as auxiliary specimen (1) which is controlled to carry its potential of  repose,  and the potentials  of  the  other  specimens,  or principal  specimens  (2),  being  controlled  relative to  the auxiliary specimen in such a manner that the true corrosion current flows between the principal specimen and the auxiliary specimen.   The invention furthermore includes an equivalent potentiostat comprising an auxiliary specimen (1) immersed in the electrolyte and connected to a current source (6); and at least one principal specimen (2), connected to another current source (3) to control the principal specimen to be at the desired potential relative to the auxiliary specimen.
Patent CA-2026608-A1 (CA)
Title: Three-way catalyst for automotive emission control
Inventor: CHATTHA MOHINDER S
IPC: B01J37/02
Filed: 1990-10-01
Abstract: Abstract of the Disclosure A three-way catalyst for automotive emission control having a mechanical carrier having a support comprised substantially of alumina, a catalytic compound supported on said carrier having a major constituent of palladium, and a discontinuous phase of titanium oxide on or adjacent substantially each exposed particle of the catalytic compound.         A method of making a three-way catalyst for automotive emission control, comprising: impregnating with palladium a mechanical carrier having a support comprised substantially of alumina to produce a composite having .05-5.0% palladium; and impregnating the composite with an organo-titanium compound and decomposing such impregnated compound to form a discontinuous titanium oxide phase on or adjacent the exposed portions of said composite.
Patent CA-2028628-A1 (CA)
Title: Solder alloy for dental and jewellery components
Inventor: STEINKE RUDI
IPC: A61K6/04
Filed: 1990-10-26
Abstract: ABSTRACT OF THE DISCLOSURE         White solder alloys for dental and jewellery components with operating temperating temperature of approximately 1000°C contain 38 to 70% by weight of gold, 6 to 20% by weight of palladium, 8 to 40% by weight of silver, 1 to 6% by weight of iron and/or cobalt, o to 10% by weight of copper, 0 to 5% by weight of each of indium, zinc and tin, and 0 to 4% by weight of each of gallium and germanium, ruthenium and/or rhenium.  The sum of the contents of tin, zinc, indium, gallium and germanium lies between 1 and 5% by weight, of the total.
Patent CA-2029000-A1 (CA)
Inventor: TWU FRED C
IPC: C08F210/06
Filed: 1990-10-30
Abstract: A process for the copolymerization of a mixture of monomers comprising propylene and 1-butene which comprises contacting the monomers and hydrogen in the gas phase in a single stage reaction zone, under polymerization conditions, with a catalyst system comprising (i) a solid catalyst precursor, which includes magnesium; titanium; a halogen which is chlorine, bromine, or iodine, or a mixture thereof; and a polycarboxylic acid ester containing two coplanar ester groups attached to adjacent carbon atoms; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a silicon compound containing at least one silicon-oxygen-carbon group, a temperature of from about 50°C to about 90°C, wherein:             (a) the atomic ratio of aluminum to titanium is in the range of about 10 to about 300;             (b) the molar ratio of aluminum to silicon compound is in the range of about 0.5 to about 10;             (c) the propylene partial pressure is in the range of about 50 to about 450 psi;             (d) the 1-butene partial pressure is in the range of about 10 to about 50 psi;   (e) the hydrogen partial pressure is in the range of about 0.1 psi to about 80 psi;             (f) the superficial gas velocity is in the range of about 1 to about 3 feet per second; and (g) the molar ratio of 1-butene to propylene is in the range of about 0.01:1 to about 0.4:1.
Patent CA-2029089-A1 (CA)
Title: Intrusion detection system
IPC: G08B13/16
Filed: 1990-10-31
Abstract: ABSTRACT      A microprocessor-based ultrasonic intrusion detection system includes an initialization mode wherein a plurality of echoes are cumulatively processed to produce a reference or signature data set representing the area to be monitored without intruding objects.  Later received echoes are compared to this signature so that an intruding object will cause generation of an alarm signal.  Time varying thresholds are utilized to compensate for attenuation caused by increased distance.
Patent CA-2029188-A1 (CA)
Inventor: WITTE JOHANNES
IPC: E21B7/06
Filed: 1990-11-02
Abstract: The present invention discloses a universal, adjustable angle, pipe joint which permits a wide variety of possible adjustments with simple means in deep well drilling technology.  In principle, the pipe joint disclosed in this invention can be readily used for joining articles of all types which include tubular, pipe-like, projections.
Patent CA-2033803-A1 (CA)
Title: Tension terminal station of a cable transport installation
Inventor: BROCHAND MAX
IPC: B61B12/02
Filed: 1991-01-08
Abstract: A tension station of a detachable chairlift or gondola lift comprises a sliding carriage (21) which supports both the return pulley (11) and transfer rail (18) with the associated drive means (20).
Patent CA-2034968-A1 (CA)
Title: Rubber modified epoxy resin compositions
Inventor: MARX EDWARD J
IPC: C08G59/14
Filed: 1991-01-25
Abstract: An elastomer-modified phenolic composition is provided which is a reaction product of an epoxy resin, a functionalized elastomer and a phenolic compound.      Further, there is provided a curable epoxy resin composition comprising an epoxy resin and the elastomer-modified phenolic composition. The use of the elastomer-modified phenolic composition permits the preparation of low-viscosity powder coating formulations for impact-resistant coatings.
Patent CA-2036150-A1 (CA)
Inventor: DA VILLA GIULIANO
IPC: G06F/
Filed: 1991-02-12
Abstract: MONITORING DEVICE FOR MONITORING THE CALORIC  CONTENTS OF DIETS     ABSTRACT         A monitoring device for monitoring the caloric contents of diets comprises a processor con-trolled by a first digital keyboard and a second keyboard the keys of which bear  food symbols related to individual foods or a combination of individual foods, the processor including a fixed store in which there are stored the unit caloric powers of the in-dividual foods and a display on which the unit caloric powers of the foods can be displayed by pressing a re-lated key of the digital keyboard.
Patent CA-2036620-A1 (CA)
Title: Telescopic sight mounting
Inventor: REPA OTTO
IPC: F41G1/38
Filed: 1991-02-19
Abstract: Abstract of The Disclosure The telescopic sight mounting comprises a base (1) supporting telescopic sight (15) with a one-sided catch member (2) encompassing a mounting track (12) of the weapon and a springloaded clamping catch member (3), mounted to pivot in base (1), opposite catch track (2).  With the help of a tension lever (11), clamping catch member (3) can be pressed against mounting track (12).  Clamping catch (3) is stopped in the pressing position by passing the dead-center position between tension lever (11) and a connecting rod (8) acting on clamping catch (3).  To protect against damage, telescopic sight (15) or telescopic sight mounting (2, 3) is surrounded by a cover (16, 17) fastened to telescopic sight mounting (2, 3).
Patent CA-2042960-A1 (CA)
Title: Method of inhibiting demineralization of bone
Inventor: CLEMENS JAMES A
IPC: C07D471/06
Filed: 1991-05-21
Abstract: Abstract A method of inhibiting bone demineralization comprising administration of an effective amount of a compound having the formula   where X is CH or N; Y is O or S; R1 is 2-propenyl, C1-C3 alkyl. benzyl or substituted benzyl where the substitutents are one or two of the same or different and are selected from methyl, ethyl, methoxy, ethoxy, hydroxy, chloro, bromo, or fluoro; R2 is C2-C3 alkyl, allyl or cyclopropylmethyl; R3 and R4 are both hydrogen or combine to form a carbon-carbon bond; and pharmaceutically acceptable acid addition salts thereof to a mammal requiring bone demineralization inhibition.
Patent CA-2044096-A1 (CA)
IPC: B23K9/12
Filed: 1991-06-07
Abstract: A method and apparatus for checking the alignment of a torch on a robotic welder to assure that the torch is in the proper position before an automatic welding operation commences or continues.  An alignment verification device which includes a plunger with a contact area of relatively small diameter is positioned at the workstation.  The projecting wire tip of the robotic torch is automatically moved axially toward the plunger, and, if alignment is within the desired range, the tip will contact and depress the plunger.  Upon depression of the plunger, a cam-operated limit switch is closed to send a signal to the robot that alignment is acceptable.  If the torch is out of alignment for any reason, or if the welding wire is bent or otherwise misaligned, the wire will miss the contact area and the welding operation will cease so that faulty welds are prevented.
Patent CA-2045967-A1 (CA)
Inventor: SCHRAMM KATHLEEN D
IPC: C08F10/02
Filed: 1991-06-28
Abstract: A supported, electron donor-complexed reduced vanadium(<3)/ zirconium coimpregnated catalyst possessing enhanced activity, the methods of its manufacture and ethylene polymers of broad molecular weight distribution produced therewith.
Patent CA-2046475-A1 (CA)
Title: Tube coupling
Inventor: BABUDER GERALD A
IPC: F16L19/03
Filed: 1991-07-08
Abstract: IMPROVED TUBE COUPLING                  Abstract of the Disclosure A tube or pipe coupling joint structure comprises a pair of spaced flange members adapted for relative movement toward each other along a longitudinal axis.  Each of the flange members has a face surface which is generally a surface of revolution about the longitudinal axis with the face surfaces on the respective flange members being located in opposed relationship to each other.  A relatively smooth thin metal gasket is positioned between the opposed face surfaces of the flange members and each of the face surfaces comprises a sealing protrusion and a stop surface for limiting penetration of the sealing protrusion into the gasket.          Moreover, each sealing protrusion is a circumferentially continuous flat and polished narrow sealing band of narrow width lying in a plane which is normal or deviates from normal to the longitudinal axis by no more than about l to 3 degrees.  Each stop surface lies radially outward of the associated sealing band and is inclined at an angle in the range of 3 to 15 degrees relative to a plane normal to the longitudinal axis.  The radially innermost portion of each stop surface is circumferentially continuous and is located axially behind the plane of the associated sealing band a predetermined distance.
Patent CA-2047350-A1 (CA)
Title: Rotary sheet feeder
Inventor: LAROCHE FRANCIS
IPC: B31B1/90
Filed: 1991-07-18
Abstract: The invention relates to a rotary sheet feeder, characterised in that it comprises at least one stationary magazine (10) for storing stacked sheet-like elements (8), a pressure roller (11) interacting with a device (4) for continuously supplying the flat supports (2) to be each provided with a sheet-like element (8), at least one member (22) for picking up and placing, one by one, the sheet-like elements by means of suction, and means (12 to 17) for supporting and driving the said picking-up member (22) which are arranged so as to confer on the latter a trajectory (30, 30') which is, at least in part, hypocycloidal such that two cusps (31, 32) of the hypocycloid coincide, on the one hand, with the point for picking up a sheet-like element (8) from the said magazine (10) and, on the other hand, with the point for transferring the said element (8) to the said pressure roller (11). 
<??>Application to the positioning of sheet-like elements using flat supports, especially windows or bags on cardboard blanks. 
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Patent CA-2047911-A1 (CA)
Inventor: KILLINGER ERICH
IPC: G09F9/37
Filed: 1991-07-25
Abstract: The invention relates to circuit arrangement for checking a matrix composed of bistable matrix points each consisting of an electromagnet, whose one lead is connected with an associated column line and whose other lead is connected, depending on the direction of current flow, via oppositely polarized diodes with the associated row setting line and the associated row resetting line, in which the column lines, the row setting lines and the row resetting lines of the matrix can be activated during setting and resetting by means of a processor, a column decoder and a row decoder in such a way, that the column lines can be activated in a column cycle in sequence with a setting counter-potential or a resetting counter-potential, and where in the course of every individual column activation all row setting lines or row resetting lines can be activated sequentially with a setting potential or a resetting potential.  It is possible, by means of optical couplers at the columns lines, the row setting and the row resetting lines, to derive comparative information with the aid of a code converter controlled by these optical couplers, which is compared in the processor with the actual setting or resetting information and which can be used to issue an error signal.
Patent CA-2051309-A1 (CA)
Title: Injection mold and coupling assembly for use in an injection molding machine
Inventor: HEHL KARL
IPC: B29C45/17
Filed: 1991-09-13
Abstract: ABSTRACT            The coupling means of the assembly comprise machine-side coupling parts, which are movable by means of hydraulic cylinders into coupling engagement with the mold-side coupling parts secured to the sections of the injection mold. As a result, the movable mold section is provided with a coupling for connecting the mold to supply lines for a performance of auxiliary operations in both mold sections and the stationary mold section is provided with a coupling for conducting a fluid for the temperature control of both mold sections. Because the coupling for the temperature control and the coupling for any auxiliary operations to be performed in the injection mold are separated from each other, the expenditure involved in the coupling equipment can be adapted to the current requirements of a potential buyer and nevertheless it is possible to effect a temperature control of the injection mold also when it is outside the clamping region of the injection molding machine.
Patent CA-2052837-A1 (CA)
Title: Undersea communication system with use of physical environment
Inventor: SANT ANNA ANTONIO C C M
IPC: H04B10/11
Filed: 1991-10-04
Abstract: ABSTRACT     This invention concerns a subsea communication system with use of physical environment,for transmit-ting signals over short distances,  consisting of a -first part (1) placed in some kind of unit, with an op tical transmitter/receiver inside it and a transparent window (2) in its side, and a second smaller part (3) connected by a lead(4) to the other point with which communication is to be made, said second part (3) hav-ing an optical transmitter/receiver inside it as well, and a transpartent window (5), communication between said first part (1) and second part (3) taking place by the sending of a luminous beam (6) from one part to the other, through the aforesaid windows (2,5) and the surrounding physical environment (7).
Patent CA-2053498-A1 (CA)
IPC: B27B17/02
Filed: 1991-10-15
Abstract: A chainsaw consists essentialy of a motor driven chain with cutting teeth.  Chainsaws are widely used for felling trees and for cutting long pieces of wood into shorter pieces.  There are devices to guide a chainsaw axially along the grain, to make lumber from trees.  All of these devices cut across the end grain of the wood.          It is well known that cutting across end grain is slow and energy consuming.  The sawdust produced is a powder.          It is also known that a chainsaw held with the cutting edge parallel to the grain cuts a great deal faster, tearing out thin strips of wood instead of fine sawdust.          This invention is a means for presenting the cutting chain substantially parallel to the wood grain, and guiding it so as to cut flat surfaces of any length.          Tests have shown that my invention cuts lumber from three to ten times, (depending on the type of wood), faster than previously available chainsaw devices of equal power.  This is achieved by a novel bar of approximately triangular shape carrying the cutting chain, and means to guide the bar to form a flat surface as long as any log.  The novel bar and guide apparatus are described in the following specification.
Patent CA-2053577-A1 (CA)
Title: Cleaning roll material and fixing apparatus
Inventor: NAKABAYASHI AKIRA
IPC: D06M101/16
Filed: 1991-10-16
Abstract: ABSTRACT OF THE DISCLOSURE       In order to reliably clean a thermal fixing roll for fixing a non-fixed image in an image forming apparatus such  as  a  copier  or  a  laser  beam  printer, a  non-woven fabric  web  having  a  crisscross  structure  or  a  parallel structure with a thermally bonded fiber sheet is disposed at least on the side in contact with the fixing roll.  The thermally  bonded  fiber  sheet  comprises  composite  fibers including  5  to 70   % by weight  of  electroless  nickel plated  'CONEX'  fibers,  which  is  obtained  by  depositing metallic nickel to a thickness of up to and including 0.2  µm by an electroless plating method on 'CONEX' fibers which  have  the  surface  formed  with  stripe-like grooves, macrovoids,   fine  irregularities  or  a  modified  cross-section  and  is  heat-resistant  and  excellent  in adhesion for nickel,  in addition to non-plated  'CONEX'  fibers and undrawn  polyester  fibers.   Preferably,  the  above  non-fabric web  is impregnated with a heat-resistant cationic charging agent as a cleaning roll material.
Patent CA-2054885-A1 (CA)
Title: Film assemblage with pre-exposed film and method for forming the same
Inventor: OLSON CARL L
IPC: G03B17/32
Filed: 1991-11-04
Abstract: ABSTRACT OF THE DISCLOSURE During manufacture a film unit has one portion masked while it is exposed to light in a second portion to form a latent image of indicia on the mask. A pod of liquid developer is attached to the pre-exposed film unit and together they are mounted within a cassette. The cassette is inserted into a camera where the previously unexposed portion of the film unit is exposed to image bearing light while the pre-exposed portion of the film unit is masked from said light. The pod of developer liquid is passed through a pair of rollers to rupture the pod, spread the developer liquid between the layers of the film unit, and develop the two latent images as a single photograph.
Patent CA-2056005-A1 (CA)
Title: Thrombin-binding substance and process for preparing the same
Inventor: DOI TAKESHI
IPC: A61K38/00
Filed: 1991-11-22
Abstract: Thrombin-binding substances capable of promoting anti-thrombin III activity and inhibiting platelet aggregation, and by themselves possessing anti-thrombin activity are disclosed. The thrombin-binding substances are useful as an effective component of anticoagulant agents, and can be produced inexpensively on a large scale.
Patent CA-2056999-A1 (CA)
Inventor: HULT BROR
IPC: B27G13/10
Filed: 1990-05-28
Abstract: ABSTRACT OF THE DISCLOSURE      The invention relates to a rotatable blade (11) for cleaning units having a plurality of teeth (1) spaced around the periphery of the blade (11).  Said teeth (1) are dismountable and/or replaceable and symmetrically shaped with several cutting edges (3), each tooth fitting into a locking recess (10) in the blade (11) with a shape corresponding to the shape of the tooth such that only one of said cutting edges (3) of the tooth projects from the blade, the remaining cutting edges (3) being located in said recess (10).  Said tooth (3) can be removed from said recess (10), rotated and replaced in said recess (1) such that a new cutting edge (3) projects from said blade.
Patent CA-2057340-A1 (CA)
Inventor: BLECHA JOHN F JR
IPC: G01R31/3185
Filed: 1991-12-10
Abstract: An arrangement is disclosed that is added to digital circuit device for providing a way of easily verifying that the device's input and output circuits are operating and connected properly.  The arrangement implements a test mode in which a simple exercising sequence is placed on any single input of a defined sequential group of device pins.  A resultant output can be observed on the next occurring output and all subsequent outputs of the defined sequential group.
Patent CA-2059906-A1 (CA)
Title: Heterocyclic amido prostaglandin analogs
Inventor: SHER PHILLIP M
IPC: C07D493/08
Filed: 1992-01-23
Abstract: ABSTRACT        HETEROCYCLIC AMIDO PROSTAGLANDIN ANALOGS        Prostaglandin analogs useful in treating thrombotic and vasospastic disease having the structural formula   wherein:      m is 1, 2, or 3; n is 0, 1, 2 or 3; R is CO2R', CH2OH, CONHSO2R3, CONHR4, or -CH2-5-tetrazolyl;      R' is hydrogen, alkyl, or alkali metal; X is O or NH; Y is -O-, a single bond or vinylene, except that Y cannot be -O- when n is O and if Y is vinylene, then n=o;         Z is -CH=CH-, -(CH2)2-, or   ;   and the remaining symbols are as defined in the specification.
Patent CA-2061728-A1 (CA)
Title: Self-lubricating device
Inventor: OGAWA KAZUFUMI
IPC: C09D4/00
Filed: 1992-02-24
Abstract: A  chemically  adsorbed  film  having  a  surface  layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional  portion  of  a  machine  part  such  as  a  gear  or  a bearing or on the surface of a game ball.  An excellently self-lubricating  low  frictional  resistance  machine  part  or  game ball thus can be obtained.  A frictional portion of a gear or the  like,  made of  SiO2 or  like ceramic material,  is dipped and held in a solution containing a surface active material, e.g.,   C F 3 (C F 2 ) 7 (C H 2 ) 2 S i C l 3 dissolved  in  a  non-aqueous  solvent.   A  hydrochloric  acid removal reaction is brought about between SiCl groups of the material,  which  contains  a  fluorocarbon  and  a  chlorosilane group,  and  hydroxyl  groups  numerously  present  on  the  SiO2 surface, thus forming bonds of C F 3 (C F 2 ) 7 (C H 2 ) 2 S i (O-) 3 over  the  entire  frictional  portion  surface.   A fluorine-containing  monomolecular  film  thus   is  formed,   which  is chemically  bonded  to  the  substrate  and  has  a  thickness  of about 1.5 nm.