baber/WOPTO huggingface dataset:
Patent CA-2025082-A1 (CA)
Inventor: SMITH CRYSTAL A
IPC: C08F4/68
Filed: 1990-09-11
Abstract: Disclosed is a polymetallic supported catalyst component comprising an activated anhydrous MgCl2 solid support which has been treated with at least one treatment of at least two halogen-containing transition-metal compounds, wherein one is a halogen-containing titanium metal compound and one is a halogen-containing non-titanium transition metal compound, optionally, in the presence of an electron donor and the processes for producing the component.  A catalyst for the polymerization of at least one alpha-olefin of the formula CH2-CHR, where R is H or a C1-12 branched or straight chain alkyl or substituted or unsubstituted cycloalkyl, by reacting this supported catalyst component with an organometallic cocatalyst, optionally in the presence of an electron donor, and the polymerization of at least one alpha-olefin with the catalyst are also disclosed.  The resulting polymers, particularly propylene polymers, have a controllable atactic content, which is expressed herein in terms of its xylene solubility at room temperature (XSRT), wherein the ratio of the I.V. of the XSRT fraction to the I.V. of the bulk polymer is greater than or equal to 0.50.
Patent CA-2026337-A1 (CA)
IPC: G02F1/225
Filed: 1990-09-27
Abstract: An electo-optic modulator (10)  includes a pair of optical waveguide channels (20, 22) formed in an X-cut lithium  niobate  substrate  (12) and  an  overlying  RF coplanar waveguide (36).  A periodic electrode structure (48)  of  the  intermittent  interaction  type  employs  a plurality of middle stubs (52) to maintain the phase of the RF drive frequency in phase with the optical signal. The modulator (10) also utilizes shorter stubs  (64)  and tapered  inlets  (42)  and  outlets  (44)  to  match  and transform impedances.
Patent CA-2026583-A1 (CA)
Title: Biotelemetric method for transmitting bioelectric potential differences and device for transmitting ecg signals
Inventor: GUGGENBUHL WALTER
IPC: A61B5/00
Filed: 1990-01-23
Abstract: ABSTRACT     A biotelemetry method for the transmission of bioelec-tric potential differences, occurring between more than two electrodes applied on a patient, from the patient to an eva-luator that is intended and designed for processing  and re-cording bioelectric potential differences, the tranfer of the signals between the patient and the evaluator being effectua-ted as electromagnetic and particularly optical one-way con-nection from the patient to the evaluator, while there is no electric connection between the electrodes and the evaluation device, characterized in that at the patient's end one of the electrodes is designated as reference electrode to which the potentials of all the remaining electrodes are referred, the signals that were formed by the corresponding poten-tial difference between the remaining electrodes and the re-ference electrode, are amplified, multiplexed, A/D-converted and transmitted in an encoded way, and at least one of the potential differences to be recorded in the evaluator was obtained from the difference between two transmitted signals.
Patent CA-2027688-A1 (CA)
Title: Process for the catalytic cracking of a hydrocarbon oil
Inventor: KHOUW FRANK H H
IPC: B01J8/22
Filed: 1990-10-15
Abstract: Process for the catalytic cracking of a hydrocarbon oil wherein a gas/hydrocarbon oil mixture is introduced into the reactor by means of at least one device which comprises at least one supply means of which the wall comprises openings, the hydrocarbon oil is introduced into the supply means and mixed with an at least partly surrounding gas which enters under pressure the supply means through the openings in the wall thereof.
Patent CA-2028777-A1 (CA)
Inventor: MIYASHITA AKIRA
IPC: C07D517/10
Filed: 1990-02-27
Abstract: The present invention provides a spiropyran compound represented by the formula   wherein R1 is alkyl having 1 to 20 carton  atoms or aralkyl, R2, R3, R4 and R5 are the same or different and are each a hydrogen atom, alkyl having 1 to 6 carbon atoms, aryl or aralkyl, alkoxyl having 1 to 5 carbon atoms, halogen atom, cyano, trichloromethyl, trifluoromethyl or nitro, R6 and R7 are the same or different and are each a hydrogen atom, alkyl having 1 to 6 carbon atoms, aryl or aralkyl, halogen atom, cyano or nitro, X is an oxygen atom or sulfur atom, Y is   Se or (CH3)2C<, Z is          , and X is a sulfur atom when Y is (CH3)2C<, The spiropyran compound of the present invention itself is usable as a material such as recording material, photosensitive material, optical filter or decorative material. The present compound can further be homopolymerized or copolymerized with other polymerizable compound into a high polymer spiropyran compound for application to optical devices or dynamic devices.
Patent CA-2032988-A1 (CA)
Inventor: SEURON PATRICK
IPC: C07D233/72
Filed: 1990-12-21
Abstract: New process for the preparation of the products of formula (I): 
<IMAGE>
 in which: 
 
  R1, R2 and R3, which are identical or different, denote H, alkyl, alkenyl, alkynyl, alkyloxy, alkenyloxy, alkynyloxy, phenyl, phenoxy, nitro, trifluoromethyl, acyl or esterified carboxyl, 
  R4, R5 and R6, which are identical or different, denote H or alkyl, characterised in that the product of formula (II): 
 
<IMAGE>
 in which R1, R2 and R3 have the meaning shown above and Hal denotes a halogen atom, is reacted with the product of formula (III): 
<IMAGE>
 in which R4, R5 and R6 have the meaning shown above, the reaction taking place in the presence of a catalyst, optionally of a solvent.
Patent CA-2033466-A1 (CA)
Title: Cut-off machine and method for tubing
Inventor: WALLIS BERNARD J
IPC: B23D25/04
Filed: 1990-12-31
Abstract: Abstract of the Disclosure A cut-off machine adapted to be positioned downstream from a source, such as a tube mill, for receiving a moving length  of  tube  stock  from  the mill  and  severing  plural predetermined lengths from the moving length.   The machine comprises a plurality of cut-off assemblies that are reciprocated longitudinally of the moving length of material and operated during the movement of sever plural predetermined lengths. Each cut-off assembly comprises a cutter blade that is supported for movement in an arcuate path and for radial movement.  A cam in the path of each blade is engaged by a cam follower movable with the blade to cause the blade to move in a straight line transversely of the flattened tubing while severing the tube length.
Patent CA-2034144-A1 (CA)
Title: Engine oil containing phenol alkoxylates
Inventor: MACH HELMUT
IPC: C10M169/04
Filed: 1991-01-15
Abstract: Engine oils containing up to 10% w/w of a base oil component comprising a reaction product of an alkylphenol or bisphenol A with butylene oxide or butylene oxide/propylene  oxide.  These  engine  oils  show  improved high-temperature stability and improved piston cleaning properties.
Patent CA-2034392-A1 (CA)
Title: Electrode structure with constant velocity and predetermined reflectivity
Inventor: WRIGHT PETER
IPC: H03H9/145
Filed: 1991-01-17
Abstract: ELECTRODE STRUCTURE WITH CONSTANT VELOCITY         AND PREDETERMINED REFLECTIVITY         ABSTRACT    An electrode structure for use with a surface acoustic wave resonator which has the same velocity as the transducers and gratings but no reflections; a second embodiment provides a electrode structure having a velocity equal to the velocity of the transducers and gratings but that has a coefficient of reflectivity that can be predetermined by varying the width of the electrodes in the electrode structure.
Patent CA-2035884-A1 (CA)
Title: Manhole cover
Inventor: SPIESS HANSRUEDI
IPC: E03F5/06
Filed: 1990-06-18
Abstract: Abstract Manhole cover The invention concerns a manhole cover with a frame (1) and a grating (3) or cover fitting flush with the frame (1). In order to secure the cover (3) in such a way that it can be easily removed and put back in place, a one-piece securing element (4a) is attached to the frame (1), the securing element (4a) having a locking element (7) at the end of a tab-like retaining element (6) extending obliquely upwards. The locking element (7) engages against a locking surface (9) at the bottom of a recess (8) in the surface of the grating (3) or cover. To unlock the manhole cover, the locking element (7) can be pulled away from the locking surface (9) with a special tool, e. g. a pair of pliers, the retaining element (6) being bent elastically. The securing element (4a) is mounted on the frame (1), embracing shoulders (5a, 5b) so that it is secured by a snap-in connection. The securing element can also be attached to the cover or grating and engage against a locking surface on the frame.                                                    (Fig. 1b)
Patent CA-2036720-A1 (CA)
Inventor: PEREZ PASCUAL MIGUEL A
IPC: C07B61/00
Filed: 1991-02-20
Abstract: Process for obtaining sec-butyl acrylate comprises reacting, both continuously and discontinuously, acrylic acid and 1-butene in the presence of an ionic exchange resin that contains sulfonic acid groups, carrying out the reaction at a temperature between 50 and 120°C, at a pressure between 10 and 30 kg/cm2, for a reaction or contact time between 0.5 and 4 hours and using an olefin/acrylic acid molar ratio between 0.3 and 10.  The sec-butyl acrylate obtained is useful in polymerization processes yielding very hard polymers with a high thermal resistance and high resistance to hydrolysis.
Patent CA-2037237-A1 (CA)
Title: Double pipe connection on plastic pipes
Inventor: EGLI ANTON
IPC: F16L39/00
Filed: 1991-02-27
Abstract: ABSTRACT OF THE DISCLOSURE      A double pipe connection is provided having a one-piece gasket (5), which extends sealingly into an intermediate space (1c) of one pipe end (1a) with an internal, transversely extending wall (5c), on one hand, and, also sealingly surrounds a partition (2c) of the other pipe end (2a), on the other hand.  The two pipe ends (1a and 2a) are inserted into each other in the axial direction, and are held together with a locking bar (6) in a positive-locking manner.  The cross section of the pipe connection may be non-round, e.g., rectangular.  Since the pipe ends have no flanges and outer threads, they may be cut to any length, and shaping suitable for injection molding is possible.   The double pipe connection is particularly suitable for liquid-bearing pipes on sanitary devices, e.g., drain fittings for wash stands.
Patent CA-2039747-A1 (CA)
Title: Method and apparatus for underground cooling enhancement for nuclear waste repository
Inventor: DANKO GEORGE
IPC: G21F9/36
Filed: 1991-04-04
Abstract: The present invention relates to the retrievable storage of high-level nuclear spent fuel (waste).   Such waste, which generates heat as it decays, is packed in sealed containers (2)  which are placed in a repository site comprising a tunnel or drift (5) in a geological rock formation (50) for permanent or long-term storage.  Elongated, sealed cooling enhancement  devices  (7)  are  emplaced  in  boreholes  (8) extending from the inside surfaces (16 a-b)  of the drift (5)  and  carry  heat  from  the  location  of  the  waste containers (5) to farther distances in the repository site. Applicable sealed cooling enhancement devices disclosed are heat pipes (7), thermal syphons (307), superconductor rods, and heat pumps (407).
Patent CA-2041127-A1 (CA)
Title: Thermal detector device
Inventor: NIX ELVIN LEONARD
IPC: G01J5/48
Filed: 1991-04-24
Abstract: A thermal imaging device comprising a pyroelectric layer having on one major surface an array of interconnected electrodes forming an entrance face, and on the opposite major surface an array of discrete electrodes connected to electrical circuitry formed on a semiconductive substrate. Between the entrance faces of individual detector elements is a network of further electrodes of high thermal conductance which provides a high degree of thermal isolation for the detector elements and prevents significant thermal cross-talk between adjacent detector elements.
Patent CA-2043630-A1 (CA)
Title: Aquatic plant cutting apparatus and aquatic plant recovery boat equipped with the apparatus
Inventor: AMIMOTO TOMOHIKO
IPC: E02B15/00
Filed: 1991-05-31
Abstract: Abstract of the Disclosure:         An aquatic plant cutting apparatus comprises a first fixed edge having a ribbon-like shape and having a cutting edge portion at its edge and at least one rotary edge juxtaposed along the front edge portion of the first fixed edge, and an aquatic plant recovery boat is constituted by fitting the aquatic plant cutting apparatus to floating means having a propeller through a connection member.
Patent CA-2044666-A1 (CA)
Inventor: BUCKLEY JOHN T
IPC: A61M1/14
Filed: 1991-06-14
Abstract: A venous reservoir bag subassembly is provided which is adapted to cooperate with a back plate and front plate reproducibly relatively movable to enable constant accurate blood volume readout, cooperating electrical means between the subassembly and the plate assembly to provide failsafe against unduly low blood volume, and angled conduit means cooperating with recesses in the plate assembly to counteract undesirable gas.
Patent CA-2047583-A1 (CA)
Title: Synergistic microbiocidal composition of 2-(decylthio) ethaneamine and 1,2-dibromo-2,4-dicyanobutane
Inventor: TULLY JOHN C
IPC: A01N33/08
Filed: 1991-07-23
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention is directed to a combination of two types of biocidal materials that give rise to synergistic effects against microorganisms in aqueous systems such that the extent to which the micro-organisms are killed exceeds that which one would expect from using the sum of the individual components of the composition. More specifically, this invention is directed to a combination comprising 2-(decylthio)ethaneamine and 1,2-dibromo-2,4-dicyanobutane in an amount effective to inhibit microbial growth.  This combination has proven to be particularly effective in inhibiting the growth of Enterobacter aerogenes ATCC 13048 in aqueous systems.
Patent CA-2047897-A1 (CA)
Inventor: ALTMANSHOFER ROBERT D
IPC: H04N3/32
Filed: 1991-07-25
Abstract: In a beam scan velocity modulation (SVM) system for a television receiver, a video signal is applied to a differentiator followed by a limiting differential amplifier. A driver amplifier coupled to the limiting amplifier drives an output stage that supplies current to an SVM coil. Certain video signals with large high frequency content may tend to produce excessive dissipation in the devices of the output stage. To prevent this, a current source for the differential amplifier is controlled by a voltage obtained from a current sampling resistor, which voltage is a measure of the average current through the output stage. The magnitude of the current source is varied by a current limiting feedback circuit to thereby vary the peak-to-peak signal output from the limiting amplifier to prevent overdissipation of the output devices. The driver amplifier performs a coring operation that is unaffected by the variable limiting.
Patent CA-2049405-A1 (CA)
Title: Broadband switching networks
Inventor: KOBAYASHI HIROSHI
IPC: H04L12/54
Filed: 1991-08-16
Abstract: Abstract of the Disclosure A broadband switching network for transmitting information by using a cell composed of an information field and a header, the network is disclosed, which comprises an ATM ring having a plurality of access nodes for multiplexing and demultiplexing the cell and a ring shape transmission path for connecting the plurality of access nodes in a ring shape so as to transmit the cell, and a network connected to at least one of the plurality of access nodes, the second network having a switching function for switching the cell.
Patent CA-2049461-A1 (CA)
Title: Cardboard toy
Inventor: KREBS TIM A
IPC: A63H33/14
Filed: 1991-08-19
Abstract: ABSTRACT OF THE DISCLOSURE    A cardboard toy or the like formed from a pattern in-the-flat and method.   The pattern includes a plurality of panels each defined by a combination of straight fold lines and edges.  Adjacent and parallel to each edge is an elon-gated slot defining a flap or tab between the slot and edge and arranged such that, when the pattern is folded into the configuration of the toy, opposing pairs of flaps and spaced slots are brought together.  A length of one sided adhesive tape is then passed through the slots and around the mating flaps and adhered to form a tight retaining band securing each connection.
Patent CA-2050643-A1 (CA)
Inventor: HSU WU-HSIUNG E
IPC: C04B40/02
Filed: 1991-09-04
Abstract: A novel method of making a wood composite employing cellulosic material as the wood component and pulverized blast-furnace slag as the binder component and the product produced thereby is disclosed.  A settable mixture of the wood component, binder component and water is prepared and thereafter  subjected  to  a  forming  pressure  within  a confined space.   While in its confined condition,  the mixture is also subjected to heat and carbon dioxide (CO2) for  a  time  and  at  a  temperature  sufficient  to  cause accelerated and early setting of the mixture.  Optionally, calcium-rich compounds can be added to the settable mixture as a slag cement binder enhancer and sodium silicate can also be used as a mineralizer.  The cellulosic material can also be pre-treated with a fire retardant resulting in a cementatious  wood  composite  exhibiting  improved  fire resistance and in situ fire load bearing strength.  Slag cement is plentiful, being a by-product of steel mills, but as a binder, is significantly less expensive than Portland cement.  Employing CO2 injection, comparable set times for slag and Portland cements can be obtained, but the wood composite employing a slag cement binder has superior final strength.
Patent CA-2051091-A1 (CA)
Title: Utilization of n-(1-hexahydroazepinylalkyl)acetamides for preparing drugs used for treating cholinergic transmission troubles
Inventor: ISRAEL MAURICE
IPC: A61P25/28
Filed: 1991-09-10
Abstract: Use of a derivative of formula (I): 
<IMAGE>
 in which R, R1, R2 and n are as defined in the description, to obtain medications intended for the treatment of disorders of cholinergic transmission.
Patent CA-2051161-A1 (CA)
Title: 1-isopropyl-2-tolylimidazole as an epoxy resin curative
Inventor: WADDILL HAROLD G
IPC: C07D233/58
Filed: 1991-09-11
Abstract: EPOXY RESIN CURATIVES      (D#80,973-F) ABSTRACT OF THE DISCLOSURE         Disclosed is an epoxy resin curative exhibiting extended pot life, lower reactivity and lower viscosity at ambient temperatures and increased reactivity at moderately elevated temperatures which comprises from 1 to 10 parts by weight of the ortho, meta or para form of 1-isopropyl-2-tolylimidazole per 100 parts by weight epoxy resin.  The latent reactive properties make the curative potentially useful in a variety of applications.
Patent CA-2052496-A1 (CA)
Inventor: MOLOZAY MAURICE
IPC: G01N1/00
Filed: 1991-09-30
Abstract: Les lignes de gaz d'analyse, de gaz "zéro" et de gaz de calibration sont chacune pourvues d'une restriction fonctionnant en régime sonique fournissant un débit nominal constant et en aval, d'une conduite de décharge pourvue d'un régulateur de débit, les débits nominaux dans les première et seconde lignes étant supérieurs au débit déterminé fourni à l'analyseur de sorte que dans chacune des phases de calibration et d'analyse, l'intégralité des portions de circuit du dispositif est balayée en permanence par le gaz nominal de la ligne, et/ou une portion de débit de gaz recirculé, en provenance d'une autre ligne.
Patent CA-2055098-A1 (CA)
Title: Monitoring and dosage control of tagged polymers in cooling water systems
Inventor: HOOTS JOHN E
IPC: G01N21/64
Filed: 1991-11-07
Abstract: Method of determining treating agent concentration added to a water recirculating system to enhance efficiency by inhibiting scaling or corrosion or settlig of particulates; the treating agent bears an amine-containing fluorescent moiety tag covalently bonded thereto, allowing sample analysis for emissivity as a measure of concentration equatable to the performance of treating agent in the system; by simultaneously employing an inert fluorescent tracer equated to the original (ppm) dosage of treating agent, consumption of the treating agent may be determined by emissivity differences equated to the original dosage.
Patent CA-2057943-A1 (CA)
Inventor: BREDA JEAN-MARC
IPC: G01B9/02
Filed: 1991-12-18
Abstract: DISPOSITIF D'ANALYSE DE CAPTEURS INTERFEROMETRIQUES DE MICRO-DFPLACEMENTS Le dispositif d'analyse de capteurs interférométriques de micro-déplacements de l'invention comporte N sources de lumière (16) reliées chacune par une fibre optique (17) à un interféromètre de mesure (18). D'autres fibres optiques (20) relient les premières à un dispositif d'analyse (14) unique. Les extrémités des secondes fibres optiques sont disposées sur un cercle de petit rayon face à une lentille de collimation (21). La sortie de l'interféromètre d'analyse est suivie d'une optique de focalisation (23) et d'un détecteur (24) à cellules (CI) disposées sur un cercle. Figure 4
Patent CA-2058060-A1 (CA)
Title: Deacetylcolchicine derivatives
Inventor: AKIYAMA KIYOSHI
IPC: C07H13/04
Filed: 1991-12-19
Abstract: Abstract of the Disclosure Deacetylcolchicine derivatives represented by the formula                           (I) wherein R denotes a residue obtained by removing COOH from a C3-C7 sugar carboxylic acid, and a hydroxyl group present in the residue may properly be protected with a protecting group of the hydroxyl group. Said deacetylcolchicine derivatives have less toxicity and strong effect for inhibiting proliferation of tumor cells, and are expected to be used as an antitumor agent.
Patent CA-2061342-A1 (CA)
Title: Adjustable support apparatus
Inventor: LAJOIE BERNARD J
IPC: F16M13/02
Filed: 1992-02-17
Abstract: ABSTRACT OF THE DISCLOSURE     The  invention  provides  an  adjustable  device  for supporting an elongate workpiece  in  combination with  a  vice.          The device includes an elevator having a cradle to support a workpiece, the elevator is mounted on an arm and is rotatable relative  to  the  arm.   The  arm  is  rotatably  mounted  on  an attachment that can be located on a work-table.  It will be seen that  the  elevator  can  be  raised  or  lowered  to  vertically position  the  workpiece.   Also,  the  arm  can  be  rotated  to horizontally position the workpiece.
Patent CA-2068244-A1 (CA)
Inventor: MESSINA MICHELLE
IPC: B65D5/44
Filed: 1992-05-08
Abstract: A container for holding a ready to eat food product is provided with means on at least one of its surfaces for holding an item associated with the consumption of said food product.
Patent CA-2068872-A1 (CA)
Title: Diagnostic composition comprising a binuclear complex, a method for preparing same and its use in magnetic resonance imaging
Inventor: BOURGOIN CORINNE
IPC: A61K49/00
Filed: 1990-11-15
Abstract: A diagnostic composition comprising a binuclear complex between a polyaminopolycarboxylic ligand, such as diethylene triamine pentacetic acid, a paramagnetic metal such as Gd and an endogenous metal such as Ca, optionally mixed with the mononuclear complex of the same paramagnetic metal and the same ligand. This composition can be used as a contrasting agent in magnetic resonance imaging.
Patent CA-2069522-A1 (CA)
Title: Preparation of alkoxysilanes by contacting a solution of hydrogen fluoride in an alcohol with silicon
Inventor: NGUYEN BINH T
IPC: B01J27/055
Filed: 1992-05-26
Abstract: PREPARATION OF ALKOXYSILANES BY CONTACTING A SOLUTION OF HYDROGEN FLUORIDE IN AN ALCOHOL WITH SILICON                          ABSTRACT            The present invention is a process for preparing alkoxysilanes by the contact of silicon with a solution of hydrogen fluoride in a liquid primary or secondary alcohol. The hydrogen fluoride activates the silicon causing the formation of alkoxysilanes to occur more rapidly and can provide selectivity for the production of dialkoxysilanes and trialkoxysilanes.  The process may be run in the presence of copper or a copper compound as a catalyst.  The process is advantageously run using atomized silicon.