baber/WOPTO huggingface dataset:
Patent CA-1282800-C (CA)
Title: Acid catalyzed process
Inventor: KING DAVID L
IPC: B01J31/12
Filed: 1987-04-15
Granted: 1991-04-09
Abstract: ABSTRACT     This invention provides an improved process for the conversion of reactant into a reaction product, in the presence of a solid acid catalyst comprising sulfonic acid groups covalently bonded to a polymeric chain, wherein the improvement comprises increasing the rate of conversion, on an equivalent sulfonic acid basis, by providing, as said polymeric chain a compound represented by the general formula:                    M(O3ZOxR)n wherein M is a tetravalent metal ion; Z is a pentavalent atom, selected from the group consisting of elements of Group V of the Periodic Table of the Elements having an atomic weight greater than 30; x varies from 0 to 1; R is select d from the group consisting of organo radicals and mixtures of hydrogen radicals and organo radicals; and n varies from 1 to 2; provided that n is 1 when R is terminated with a tri-or tetraoxy pentavalent atom.
Patent CA-1276376-C (CA)
Title: Polymers and process of making same
Inventor: JAROVITZKY PETER A
IPC: D21H13/10
Filed: 1987-05-01
Granted: 1990-11-13
Abstract: ABSTRACT Novel N-chloroamide polymers and a process for the production thereof are disclosed wherein said polymers have the formula   wherein R is hydrogen or methyl, X is a halogen atom and the ratio of x to y ranges from about 98:2.0  to about 85:15, respectively, the molecular weight of the polymer being at least about 100,000.          A third comonomer Z, may also be present, which is a cationic monomer, in an amount z such that the ratio of (x + y) to z ranges from about 99.9 to 0.1 to about 50:50, respectively,  These polymers are produced by contacting a water-in-oil emulsion of an acrylamide polymer having a molecular weight of at least about 100,000 with a halogen gas at -10°C to 80°C, a pH of 7° or less for from 4 minutes to 4 hours and a mole ratio of gas to polymer of 0.1:99.9 to 50:100, respectively.
Patent CA-1311837-C (CA)
Title: Chrominance signal processing circuit
Inventor: TANAKA YUTAKA
IPC: H04N9/64
Filed: 1987-08-11
Granted: 1992-12-22
Abstract: ABSTRACT OF THE DISCLOSURE A chrominance signal processing circuit having N (N ? 2) band-pass filters for dividing a chrominance signal into N regions and N signal processing circuits respectively having different noise eliminating characteristics from each other and each being connected in series to a different one of the N band-pass filters, and means for synthesizing the outputs from the N signal processing circuits to obtain a chrominance signal wherein noise and cross color interference are suppressed.
Patent CA-1281985-C (CA)
Inventor: NOWOBILSKI JEFFERT J
IPC: F25D23/06
Filed: 1987-10-07
Granted: 1991-03-26
Abstract: VACUUM INSULATION PANEL                         ABSTRACT      A vacuum insulation panel comprising a defined dual layered enclosure encasing a defined compressed fiberglass substrate which enables easy and effective insulation of large equipment with improved system flexibility and integrity.
Patent CA-1305416-C (CA)
Title: Method of isolating ca 125 antigen
Inventor: DAVIS HUGH M
IPC: C07K16/00
Filed: 1987-11-24
Granted: 1992-07-21
Abstract: Abstract of the Disclosure A procedure for isolating CA 125 antigen and an isolated specie of the antigen are described.
Patent CA-1316568-C (CA)
Title: Device for the indexed fixing of a control unit
Inventor: DARD PIERRE
IPC: H02B1/052
Filed: 1987-12-14
Granted: 1993-04-20
Abstract: ABSTRACT OF THE DISCLOSURE            A device is provided for the indexed fixing of a control unit on a hat shaped section, wherein, at least one auxiliary adjustment device formed of a tenon and a cavity,  is disposed between the hat shaped section and the control unit, the mechanical cooperation of the two making  it  possible  to  fix  the  control  unit  in  the longitudinal axis of the hat shaped section.
Patent CA-1318416-C (CA)
Title: Bonding compositions for the manufacture of additive printed wiring boards and articles made with the bonding composition
Inventor: KOHM THOMAS S
IPC: C09J123/34
Filed: 1987-12-30
Granted: 1993-05-25
Abstract: ABSTRACT OF THE DISCLOSURE     This invention concerns a bonding composition useful for the manufacture of fully additive and semi-additive printed wiring boards.  The composition comprises (1) a phenolic resin substantially free of methyl ether groups with an average of four to ten phenolic rings per molecule and at least two methylol functional groups; (2) at least one heat resistant polymer with an aromatic or cyclic backbone and functional groups capable of crosslinking with the phenolic methylol groups without evolving water and present in an amount sufficient to react with the methylol groups; and (3) 30 to 60% by weight of an elastomer.  The composition is applied and cured on a printed wiring base material.  After curing, the composition is capable of being adhesion promoted for adherent electroless metal deposition.  The bonding composition is capable of maintaining the bond of the deposited metal for ten seconds during repair cycles with a soldering iron at 430°C.
Patent CA-1317078-C (CA)
Inventor: MENTE KURT
IPC: B29C51/08
Filed: 1988-01-08
Granted: 1993-05-04
Abstract: ABSTRACT       For the production of decorative seams on dashboards or the like, molded of thermoplastic material by the deep-drawing method, a heated embossing die having a negative decorative seam is pressed briefly, at the instant of the deformation of the dashboard or the like, against a molding tool covered with thermoplastic film.  Elastic embossing cushions are glued into the molding tool, thereby providing a decorative seam with a convex curvature.          A tentering frame is used to hold the film which initially is heated to the plastic temperature range using a high intensity radiant heater.  After heating, the film is pre-shaped into a curved configuration using a molding box.  The molding tool is then inserted into the molding box for final deformation of the film using a pressure difference.
Patent CA-1309066-C (CA)
Inventor: CAZES MICHEL J
IPC: B65D33/02
Filed: 1988-02-18
Granted: 1992-10-20
Abstract: A sleeve in a material which can be cold drawn (7) surrounds a cushion, by means of jaws around which it is formed. 
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Patent CA-1310443-C (CA)
Inventor: AGOURIDAS CONSTANTIN
IPC: C07K5/06
Filed: 1988-02-25
Granted: 1992-11-17
Abstract: New glutamic acid derivatives and their salts with the acids of formula (I): 
<IMAGE>
 in the form of separated isomers or of mixtures,
 R1 = H, amino acid or peptide in which the amine may be esterified, or a saturated or unsaturated C6-C24 aliphatic acid residue,
 R3 = OH, C1-C5 alkoxy, or amino acid in which the amine may be substituted by a C1-C5 alkyl,
 R5 = H or C1-C5 alkyl, 
<IMAGE>
 R2 = H, amino acid or peptide,
 R4 = OH, C1-C5 alkoxy, or amino acid in which the amine may be substituted by a C1-C5 alkyl, 
<IMAGE>
 X and Y = H or bond with U.
Patent CA-1283784-C (CA)
Title: Power cycle working with a mixture of substances
Inventor: MENDOZA-ROSADO SERAFIN M
IPC: F01K23/04
Filed: 1988-04-05
Granted: 1991-05-07
Abstract: A B S T R A C T   A power cycle to operate with maximum temperature above 300°C, working with a mixture of water and another substance having lower volatility, greater molecular weight and tendency to superheat in the isentropic expan sion.  Both substances are vaporized in a boiler, in part at variable tem-perature, and expanded in at least one turbomachine.  After the first ex-pansion, a heat yielding takes place at constant pressure, wherein part of the least volatile substance condenses at variable temperature.  In compa-rison with the steam cycle, this new cycle offers higher efficiencies be-cause it has, among others, the advantage of increasing the average tempe-rature of heat absorption, without intermediate reheating and without con-densation occurring in the turbine until very low exhaust pressures are reached, depending on the proportion of the mixture used.  It also facili-tates, in the case of combining with a secondary cycle of refrigerant fluid, the superheating of this fluid, which is especially useful in the case of fluids with wet expansion.
Patent CA-1339889-C (CA)
Title: Procede d'obtention de poudre fine d'oxyde metallique (zirconium, hafnium, titane) ayant une surface specifique ou une granulometrie predeterminee
Inventor: BARRAL ROBERT
IPC: C01G25/02
Filed: 1988-05-17
Granted: 1998-06-02
Abstract: L'invention concerne un procédé d'obtention directe d'une poudre fine composée de cristallites peu ou pas agglomérés d'au moins un oxyde métallique,  tels que la zircone,  l'hafnone et/ou l'oxyde de titane,  ayant une surface spécifique ou une granulométrie choisie et contrôlée de diamètre médian inférieur à 0,2 .mu.m, en vue de l'usage prévu généralement dans  l'industrie des  céramiques techniques.  Selon ce procédé, on traite par hydrolyse le tétrachlorure métallique correspondant à l'oxyde dont on cherche à obtenir la poudre à l'aide de vapeur d'eau en opérant à une pression partielle de tétrachlorure, réglée à une valeur prédéterminée fonction de la surface spécifique ou de la granulométrie recherchée, comprise entre 3 et 30% de la pression totale du mélange de tous les composants gazeux,  tout en maintenant un rapport molaire eau sur tétrachlorure métallique compris entre 2 et 10.  Ce procédé est particulièrement intéressant dans la mesure où il est non polluant et il se déroule en phase gazeuse à basse température en ne générant, comme effluent, que de l'acide chlorhydrique et peu de chlore plus difficile à traiter et récupérer.
Patent CA-1283040-C (CA)
Title: Continuous process for hydraulic fracturing with foam
Inventor: KHALIL CARLOS N
IPC: C09K8/70
Filed: 1988-05-30
Granted: 1991-04-16
Abstract: ABSTRACT     A continuous process for hydraulic fracturing of formations with in-situ nitrogen foam generation through the reaction of equimolar solu-of of ammonium chloride and sodium nitrite.   The foam formed has a quality between 0.50 and 0.98, an excellent sand carrying capacity and the yield of the reaction reaches nearly 61.0% after 5 minutes.
Patent CA-1307144-C (CA)
Title: Coated optical fiber tape
Inventor: NISHIMURA AKIRA
IPC: G02B6/44
Filed: 1988-06-01
Granted: 1992-09-08
Abstract: ABSTRACT OF THE DISCLOSURE       In  a  coated  optical fiber  tape  comprises  a plurality  of  optical  fibers  each  having  a  coating  and being aligned parallel in the same plane, a common coating layer covering the array of the optical fibers,   and a peelable cured coating layer being provided between each of  the  coatings  on  the  optical  fibers  and  the  common coating layer to prevent the latter from being bonded or urged  to  said  coatings  on  the  optical  fibers,  the improvement wherein the peelable cured coating layer has a compression modulus of elasticity of at least 5 kg/mm2 but not exceeding 300 kg/mm2.
Patent CA-1280650-C (CA)
Title: Auxiliary fuel supply system
Inventor: STAERZL RICHARD E
IPC: F02M69/10
Filed: 1988-06-08
Granted: 1991-02-26
Abstract: Abstract An auxiliary fuel supply system is provided for a two cycle internal combustion engine (302). first fuel line (350) supplies fuel from the fuel pump (338) to a solenoid (352) which is continuously cyclable between ON and OFF states during running of the engine, including high speed operation where detonation may occur.  Fuel then flows through a second fuel line (354) to a restriction orifice metering housing (356), and then to a plurality of third branch fuel lines (358, 384, 386, 388, 390 and 392) for delivery to respective cylinders.  The restriction orifices provide a pressure drop from the second fuel line to the plurality of third fuel lines, to provide lower fuel pressure in the third fuel lines, to reduce the chance of leakage at the intake manifold (326), and also to reduce fuel pressure fluctuations in the third fuel lines otherwise due to cycling of the solenoid. Metering housing structure is disclosed.  The solenoid is controlled by a variable duty cycle oscillator (408), which in turn is controlled by a fuel enrichment signal (84) output by an electronic control which is responsive to engine knock and/or temperature.  Control circuitry is disclosed.
Patent CA-1339525-C (CA)
Inventor: OKADA SUSUMU
IPC: C22C38/14
Filed: 1988-06-16
Granted: 1997-11-04
Abstract: An extra-low carbon cold rolled steel sheet useful for use in automobiles and the like having an improved spot weldability is obtained by combinedly adding Ti, Nb and B in predetermined amounts to the extra-low carbon steel so as to control the amount of fine Ti precipitate dispersed in steel to the specified reasonable range.  Furthermore, the spot weldability is improved by controlling the production conditions of the extra-low carbon steel sheet to specified reasonable ranges.
Patent CA-1307785-C (CA)
Title: Oligosaccharide derivatives
Inventor: WESSEL HANS P
IPC: C07H15/203
Filed: 1988-07-25
Granted: 1992-09-22
Abstract: ABSTRACT    Novel compounds with anti-proliferative and mucosa--protective  activity  are  obtained  by  sulphating trestatins with sulfur trioxide complexes such as sulfur trioxide pyridine.  The compounds can be used, e.g., for the  prophylaxis  of  arteriosclerosis,  especially  after bypass  operations  or angioplasty  as well  as  for  the therapy and prophylaxis of gastric ulcers.  The compounds have the formula   wherein n is a whole number of 1-3; R is hydrogen or a residue -SO3M and M is a cation; and in which the degree of sulphation is at least 1.
Patent CA-1301898-C (CA)
Title: High-power waveguide laser
Inventor: OPOWER HANS
IPC: H01S3/03
Filed: 1988-08-30
Granted: 1992-05-26
Abstract: A b s t r a c t In order to improve an electrically excited, diffusion-cooled high-power laser comprising two wall surfaces slightly spaced from one another and forming an optical waveguide, the width of the wall surfaces being a multiple of the space between them and the surfaces enclosing between them a flow-free discharge chamber, and also comprising an optical resonator having resonator mirrors disposed at both ends of said waveguide, such that this results in a laser beam which can be well focused, it is suggested that the resonator be an optically unstable resonator including a beam path extending lengthwise of a resonator axis and having an expansion transverse to the resonator axis extending as far as at least one exiting laser beam and that the transverse expansion extend transversely to a longitudinal direction of the waveguide and approximately parallel to the wall surfaces.
Patent CA-1321042-C (CA)
Inventor: WESSLING BERNHARD
IPC: C08G75/0295
Filed: 1988-09-02
Granted: 1993-08-03
Abstract: ABSTRACT      An intrinsically conductive polymer is in the form of a dispersible solid of primary particles with a specific surface area according to BET of > 15 m2/g and with an average diameter of less than 500 nm, in which preferably not more than 20% of aggregates with an average size  >  1 um are present in the particle size range > 500 nm.  For the manufacture of the polymer the polymerisation is carried out in a solvent in which the appropriate monomer is soluble or colloidally dispersible, but in  which  the  polymer  that  is  formed  is  insoluble.    The temperature of the reaction mixture is not allowed to rise more than 5°C above the starting temperature.  In a preferred form of the process, the temperature is not allowed to rise to a value more than 20°C above the starting temperature. The polymerisation can be carried out at a temperature of ? 50°C.
Patent CA-1323453-C (CA)
Inventor: BAKER BRUCE D
IPC: G01N23/04
Filed: 1988-10-12
Granted: 1993-10-19
Abstract: Abstract A tomographic inspection system wherein the electron beam of a microfocus X-ray tube is deflected in a circular scan pattern onto the tube anode in synchronization with a rotating detector that converts the X-ray shadowgraph into an  optical  image  and  derotates the  image  so as to be viewed and integrated in a stationary video camera.   A computer system controls an automated positioning system that  supports  the  item  under  inspection  and  moves successive  areas  of  interest  into view.    In  order  to maintain  high  image  quality,  a  computer  system  also controls  the  synchronization  of  the  electron  beam deflection and rotating optical system, making adjustments for inaccuracies of the mechanics  of the  system.   The computer system can also operate under program control to automatically analyze data, measure characteristics of the item under  inspection  and make decisions regarding the acceptability  of  the  item's  quality.    The  invention produces high resolution images in rapid succession so as to be suitable for use in conjunction with manufacturing production  lines  and  capable  of  inspecting  electronic devices,  solder  connections,  printed  wiring  boards  and other assemblies.     DHE-2012:de21
Patent CA-1323413-C (CA)
Inventor: HASSENPFLUG WOLFGANG
IPC: G01S13/86
Filed: 1988-10-31
Granted: 1993-10-19
Abstract: Abstract:     To prevent errors in the velocity measurement in aircraft by means of Doppler radar due to the radar receiver being locked to the back scatter from side lobes of a plurality of main lobes radiated in a fixed radiation geometry, it is proposed to compare the inertial vertical velocity component (VIZ) obtained via a baro-inertial control loop with the vertical velocity component (VDZ) determined from the Doppler frequencies and to derive from the comparison an error detection signal.  On the occurrence of the error signal, the inertial vertical velocity component can then replace the corresponding velocity component supplied from the Doppler system whilst the horizontal velocity components can be determined, for example, from the last calculated wind and the corresponding air speed components, for as long as the error signal lasts.
Patent CA-1319131-C (CA)
Title: Liquid dispensing apparatus
Inventor: MEYER GABRIEL
IPC: A61M5/20
Filed: 1988-11-16
Granted: 1993-06-15
Abstract: PCT No. PCT/EP88/01027 Sec. 371 Date Jul. 28, 1989 Sec. 102(e) Date Jul. 28, 1989 PCT Filed Nov. 12, 1988 PCT Pub. No. WO89/04679 PCT Pub. Date Jun. 1, 1989.A device for dispensing liquids, in particular drugs, comprises a reservoir (11) provided with a neck (30) of reduced cross-section being engaged by a stopper element (16). The reservoir is completely covered by a cap (25) which has at one end a movable push button (28) which abuts against the bottom portion of the reservoir (10). In order to transfer the device from its storage position to its activated position, the operator must press on the push button (28) in such a way that the stopper element (16) penetrates into the interior of the reservoir beyond the neck of reduced crosssection (30). This device can be used as an injection syringe, a spray dispenser, or an applicator for the skin or eyes.
Patent CA-1320307-C (CA)
Title: Liquid-cristalline, thermotropic aromatic polyesters
Inventor: COASSOLO ALFREDO
IPC: C08G63/16
Filed: 1988-12-09
Granted: 1993-07-13
Abstract: Abstract Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinones mono-and possibly di-substituted with aralkyl groups.
Patent CA-1339381-C (CA)
Inventor: BELL WELDON KAY
IPC: B01J29/65
Filed: 1988-12-28
Granted: 1997-08-26
Abstract: A process is disclosed for converting light olefin(s) to alcohol(s), ether(s) or a mixture of alcohol(s) and ether(s) which comprises contacting a feed containing at least one light olefin with water in the vapour and/or liquid phase under olefin hydration conditions in the presence of a large pore zeolite as catalyst to produce said alcohol(s), ether(s) or mixture thereof.  The process is especially applicable to the hydration of a propylene-containing feed, for example, a refinery FCC stream containing a substantial amount of propylene, to provide a mixture of isopropyl alcohol (IPA) and diisopropyl ether (DIPE) which is particularly useful as an octane improver for gasoline.
Patent CA-1333946-C (CA)
Title: Thermoplastic molding compositions with cold impact strength
Inventor: BARTMANN MARTIN
IPC: C08K5/00
Filed: 1989-01-26
Granted: 1995-01-10
Abstract: A thermoplastic molding composition having good cold impact strength properties, consisting essentially of (I)  a polyamide 1212 having a relative viscosity in the range of from 1.5 to 3.0, and (II)  2 to 25% by weight, based on the polyamide, of a plasticizer.
Patent CA-1333054-C (CA)
Inventor: ROTH KLAUS
IPC: F16L59/02
Filed: 1989-02-17
Granted: 1994-11-15
Abstract: Insulation mat for bodies having a curved surface, in particular for pipes having at least one support sheet (2) to which are connected a plurality of lamelliform strips (4) of material made from mineral fibres arranged next to one another and mutually parallel in order to form an insulating layer, the main orientation of the fibres of each strip (4) being perpendicular to the plane of the suppport sheet (2), and the strips (4) having a consistency such that the adaptation to the surface curvature results in a decrease in the width of the strips (4) by reciprocal closing-up of the fibres on the side opposite the support sheet (2). Between the strips (4) there are inserted support ribs (7) with an increased compressive strength in the direction perpendicular to the support sheet (2). 
<??>Use as an insulating and supporting means. 
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Patent CA-1298400-C (CA)
Title: Video display driver coupling circuit
Inventor: FURREY JOHN H
IPC: H04N5/14
Filed: 1989-02-23
Granted: 1992-03-31
Abstract: RCA 84,942 Abstract A video signal from a low impedance output of an amplifier device is conveyed to an image display device via a coupling path including first and second series connected resistors and a high frequency bypass capacitor coupled across the first resistor.  The coupling path limits the signal drive to the display device particularly in the presence of a large magnitude video drive signal, and also compensates for high frequency attenuation of the video drive signal by an input capacitance of the display device.
Patent CA-1326322-C (CA)
Title: Uniform molecular weight polymers
Inventor: KASZAS GABOR
IPC: C08F4/06
Filed: 1989-04-06
Granted: 1994-01-18
Abstract: ABSTRACT OF THE INVENTION A method for producing polymers with narrow molecular weight distribution which involves combining (1) an initiator component of the formula   in which R1, R2 and R3 are alkyl, aryl, or aralkyl groups, and can be the same or different, and X is an acetate, an etherate, a hydroxyl group, or a halogen, and i is a positive whole number, (2) a Lewis acid of the formula MXn in which M is titanium, aluminum, boron, or tin, X is a halogen, and n is a positive whole number less than 7, (3) an electron donor component having an electron donor number of from at least about 25 to no more than about 50, (4) a solvent for the preceding and (5) a cationically polymerizable hydrocarbon monomer component.
Patent CA-1317128-C (CA)
Title: Flexible belt and relative driving system
Inventor: ROBECCHI EDOARDO
IPC: F16G1/08
Filed: 1989-04-27
Granted: 1993-05-04
Abstract: ABSTRACT OF THE DISCLOSURE     An elastically extensible flexible belt is provided which comprises an annular body of elastomeric material in which is embedded a plurality of elongated elements arranged along a surface corresponding to the position of the neutral axis of the belt.  The belt is characterized in that each elongated element, at 1/10 of its ultimate tensile stress, has an elongation value able to balance a shrinkage value of the innermost surface of the belt, ranging between two limit values  .epsilon.1, .epsilon.2 corresponding to the bending of the belt according to two pre-established curvatures.  The first curvature is represented by a circumference whose radius r1 is equal to 60% of the radius R of the circumferential development of the annular body in correspondence of the elongated elements and the second curvature is represented by a circumference whose radius r2 corresponds to 35% of the radius R of the circumferential development of the annular body.