baber/WOPTO huggingface dataset:
Patent CA-2004959-A1 (CA)
Title: Manufacture of 5-cyanovaleric acid and its esters
Inventor: BURKE PATRICK M
IPC: C07C253/30
Filed: 1989-12-08
Abstract: TITLE Manufacture of 5-Cyanovaleric Acid and Its Esters Abstract Manufacture of 5-cyanovaleric acid and its esters by carbonylation of pentenenitriles from a mixture consisting essentially of pentenenitrile, CO and at least one compound of the formula R'OH, where R is hydroden or alkyl of 1 to 6 carbon atoms.
Patent CA-2006299-A1 (CA)
Title: Shoe and elastic sole insert therefor
Inventor: SCHINDLER JERRY
IPC: A43B13/18
Filed: 1989-12-21
Abstract: SHOE AND ELASTIC SOLE INSERT THEREFOR      ABSTRACT       A shoe is provided having an elastic sole insert which compresses and expands when loaded generally axially to the wearer's foot.    The shoe includes a sole, an upper member attached to the sole periphery and surrounding the wearer's foot, and an insole.  The elastic insert is positioned between the sole interior and the insole.  The elastic insert has a continuous outer ring with a cutout region formed therein to define a leaf.  The leaf projects out of the insert is compressed.
Patent CA-2006729-A1 (CA)
Inventor: MURASAWA SADAO
IPC: C01G23/047
Filed: 1989-12-27
Abstract: The present invention provides novel titanium dioxide aggregates especially suitable for an electrophotographic photosensitive material.  This titanium dioxide aggregates comprise sintered aggregates of fine primary particles and have a rutile type crystal structure and an oil absorption of 35-65.  This titanium dioxide aggregates which are treated with a mineral acid is also provided.  There is also provided an electrophotographic photosensitive material which contains such titanium dioxide in a photosensitive layer.
Patent CA-2009421-A1 (CA)
Title: Micro-preparative electrophoresis apparatus
Inventor: YUAN PAU
IPC: G01N21/64
Filed: 1990-02-06
Abstract: Abstract Micro-preparative gel electrophoresis apparatus with continuous elution has quickly interchangeable gel columns.  Increase in electric field intensity at the elution interface is managed by change in cross sectional area, and bubbles are avoided through pressurization of buffer systems using Helium gas and placement of the high voltage electrode at the elution end of the gel column downstream from the elution chamber.  The apparatus avoids unmanageable heating effects through the micro-scale of components, and the column itself is small enough that its temperature can effectively be controlled using a Peltier heating/cooling element.  Computerized control for automatic electrophoresis, on-line detection, and sample collection is provided.
Patent CA-2011355-A1 (CA)
Title: Malaxeur a rotor a repartition automatique du couple d'entrainement a chaque extremite
Inventor: DAIRON MICHEL
IPC: A01B33/08
Filed: 1990-03-02
Abstract: L'invention  concerne  un  malaxeur  à  rotor  à répartition automatique du couple d'entrainement à chaque extrémité.    Le malaxeur  est  caractérisé  en  ce que  la transmission de puissance à chaque extrémité du rotor est faite par au moins une chaîne entraînant un pignon coaxial au rotor, un limiteur de couple étant interposé entre ce dernier et le pignon et chacun des deux limiteurs de couple étant réglé à une même valeur limite de couple telle que la somme des deux valeurs soit légèrement supérieure au couple nominal d'entraînement du rotor.   L'invention s'applique notamment aux malaxeurs pour défoncer les sols.
Patent CA-2013783-A1 (CA)
Title: Substituted 1,8-naphthyridines
Inventor: HUBSCH WALTER
IPC: A61P3/06
Filed: 1990-04-04
Abstract: ABSTRACT OF THE DISCLOSURE            Inhibitors of 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase which are 1,8-naphthyridines of the formula   in which A     -  represents a 3- to 7-membered heterocycle which is optionally substituted, or aryl which is optionally substituted, B     -  represents cycloalkyl or alkyl which is optionally substituted, aryl which is optionally substituted, D and E are identical or different and -  represents hydrogen, halogen, mercapto, hydroxyl, alkoxy, alkyl which is optionally substituted, or a group of the formula -NR1R2, aryl, aryloxy or arylthio having 6 to 10 carbon atoms, which is optionally substituted, Y     -  represents a group of the formula   or        in which J     -  denotes hydrogen, hydroxyl, mercapto or halogen, or alkyl, alkoxy or alkylthio which are option-ally substituted, aryloxy, benzyloxy or arylthio or a group of the formula -NR1R2, Z     -  denotes oxygen or sulphur, G     -  denotes hydrogen, alkyl or alkenyl which is optionally substituted, Le A 26 759 X    -  represents a group of the formula -CH2-CH2- or -CH=CH-, and R    -  represents a group of the formula          or            in which R5  -   denotes hydrogen or alkyl, and R6  _   denotes  hydrogen or alkyl, which may be substituted by phenyl, or -   denotes aryl or a cation, and their salts.            Le A 26 759
Patent CA-2014927-A1 (CA)
Title: Continuous process for the production of powdered polyisocyanate addition products and the powders produced therefrom
Inventor: ROSTHAUSER JAMES W
IPC: C08G18/08
Filed: 1990-04-19
Abstract: CONTINUOUS PROCESS FOR THE PRODUCTION OF POWDERED  POLYISOCYANATE ADDITION PRODUCTS AND THE POWDERS                PRODUCED THEREFROM ABSTRACT OF THE DISCLOSURE          The present invention is directed to a continuous process for the production of powdered polyisocyanate addition products in finely divided form which by simultaneously a) mixing a polyisocyanate component, an isocyanate-reactive component and an inert organic medium containing a surfactant, wherein at least one of the components is insoluble in the inert organic medium, in a low shear stator-rotor dynamic mixer operating at speeds of about 300 to 8000 rpm, utilizing a mixing wattage of about 0.05 to 10.0 watts per cubic centimeter and having a mixing volume of at least about 0.1 liters and b) reacting the polyisocyanate component with the isocyanate reactive-reactive component in the inert organic medium to form solid polyisocyanate addition products which can be separated from the inert organic medium to form a powder, the average residence time of the components and the inert organic medium in the dynamic mixer being about 3 to 300 seconds and the overall flow rate through the dynamic mixer being at least about 20 kg/h.         The present invention is also directed to the powdered polyisocyanate addition products produced by this process.
Patent CA-2016456-A1 (CA)
Title: Substanitally transparent flame retardant aromatic polycarbonate compositions
Inventor: LEWIS LARRY N
IPC: C08K3/00
Filed: 1990-05-10
Abstract: SUBSTANTIALLY TRANSPARENT FLAME RETARDANT  AROMATIC POLYCARBONATE BLEND                ABSTRACT OF THE DISCLOSURE           Flame retardant aromatic polycarbonate blends are provided which are capable of being tested V-O under UL-94 test conditions.  A triarylsilicon material such as triphenylsilanol is incorporated into the aromatic polycarbonate to provide transparent, flame retardant compression moldable thermo-plastics capable of satisfying the UL-94 V-O requirement at 1/16".
Patent CA-2017180-A1 (CA)
Title: Synthetic peptides capable of stimulating a t-cellular immunity
Inventor: DE MAGISTRIS MARIA T
IPC: C07K19/00
Filed: 1990-05-18
Abstract: SYNTHETIC  PEPTIDES  CAPABLE OF  STIMULATING A  T-CELLULAR  IMMUNITY                     Abstract The  S1  subunit  regions  of  pertussis  toxin  from    Bordetella pertussis  comprising the antigenic sites recognized by the human  T helper   clones   anti-S1   are  described  and   said   sites   are characterized.          Synthetic  peptides having an amino acid sequence  corresponding  to the  sequence of said regions or of the T-epitopes comprised therein are novel.          Said  peptides,  alone or in combination with the immunodominant  B-epitope   of  the  pertussis  toxin  S1  subunit  from    Bordetella pertussis,  are particularly useful as immunogens for  manufacturing acellular anti-pertussis vaccines.
Patent CA-2018767-A1 (CA)
Title: Granules of alkyl esters containing hydroxyphenyl groups
Inventor: GAHAN MICHAEL C
IPC: C09K15/08
Filed: 1990-06-12
Abstract: A process for the manufacture of granules of low-melting alkyl esters containing hindered hydroxyphenyl groups which comprises introducing a melt of the compound into a cold aqueous solution of an organic water-miscible solvent, thereby obtaining free-flowing and dust-free Granules.
Patent CA-2018991-A1 (CA)
Title: Process for the preparation of vinyl acetate
Inventor: WUNDER FRIEDRICH
IPC: C07C67/055
Filed: 1990-06-14
Abstract: The invention relates to a process fox the preparation of vinyl acetate in the gas phase from ethylene, acetic acid and oxygen and/or oxygen-containing gases on a catalyst of palladium and/or compounds thereof, and optionally. in additions gold and/or gold compounds, and, as activators, alkali metal compounds and optionally in addition, cadmium compounds on a support. The support comprises SiO2 or an SiO2-Al2O3 mixture having a surface area of 50-250 m2/g and a pore volume of 0.4-1.2 ml/g, and has a grain size of from 4 to 9 mm. 5 to 20% of the pore volume of the support is farmed by pores having radii of from 200 to 3,000 angstrom and 50 to 90% of the pore volume is formed by pores having radii of from 70 to 100 .ANG.ngstrom.
Patent CA-2020530-A1 (CA)
Title: Vortex flowmeters
Inventor: TURNER JOHN T
IPC: G01F1/32
Filed: 1990-07-05
Abstract: ABSTRACT            33.109CA     A vortex flowmeter is provided with a vortex-inducing bluff body in the form of a first, upstream, cylinder having a semi-circular or semi-ellipsoidal front surface and a planar rear surface, and a second, downstream, cylinder having a planar front surface and a planar or concave rear surface.    The rear surface of the upstream cylinder is parallel to the front surface of the downstream cylinder, and separated from it by a gap whose width is preferably about 25% of the diameter of the upstream cylinder.
Patent CA-2021260-A1 (CA)
Title: Anchoring post assembly
Inventor: HUGRON DENIS P
IPC: E04H12/22
Filed: 1990-07-16
Abstract: SUBSTITUTE                       REMPLACEMENT               SECTION is not Present Cette Section est Absente
Patent CA-2021623-A1 (CA)
Title: Method for fan beam helical scanning using rebinning
Inventor: CRAWFORD CARL R
IPC: G06T11/00
Filed: 1990-07-19
Abstract: METHOD FOR FAN BEAM HELICAL SCANNING         USING REBINNING                 Abstract of the Disclosure A method of reducing image artifacts in images acquired with fan beam, helical scanning, tomographic imaging systems rebins the fan beam data into parallel beam projection sets.  Data is spliced from first areas of the parallel beam projection data to second areas to create a set of 2.pi. radians of complete projection data.  The 2.pi. of projection data is divided into half scans which are interpolated and extrapolated to produce a new projection set at the slice plane with reduced helical offset error. A feathering function is used to blend the discontinuities in the interpolation and extrapolation weights to prevent streak image artifacts.
Patent CA-2021872-A1 (CA)
Title: Topical spironolactone composition
Inventor: KIM CHUNG E
IPC: A61K8/00
Filed: 1990-07-24
Abstract: ABSTRACT  The invention relates to a topical spironolactone composition for the treatment of acne, hirsutism  and other conditions caused by excess androgenic activity.
Patent CA-2022696-A1 (CA)
Inventor: CATELLI CAMILLO
IPC: F28D7/10
Filed: 1990-08-03
Abstract: Abstract.            The present invention relates to a heat exchanger for tomatoes, in particular triturated, cut or otherwise crushed.     Said heat exchanger comprises a cylindrical container (1)  provided with an inlet orifice (3) and an outlet orifice (4) for the tomato, internally to which a heating body (2), also cylindrical, is coaxially arranged, and externally to which a heating shell (5), also coaxial, is arranged; between the internal heating body (2)  and the cylindrical container an annular section hollow space or jacket (11) is defined, through which the tomato, triturated, cut or however crushed, passes from the inlet orifice (3) to the outlet orifice (4) and is heated by the internal heating body (2) and the external heating shell (5).
Patent CA-2022826-A1 (CA)
Title: Photographic emulsions containing internally modified silver halide grains
Inventor: MCDUGLE WOODROW G
IPC: G03C1/09
Filed: 1990-08-07
Abstract: -O-PHOTOGRAPHIC EMULSIONS CONTAINING  INTERNALLY MODIFIED SILVER HALIDE GRAINS               Abstract of the Disclosure Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a carbonyl coordination ligand and a transition metal chosen from groups 8 and 9 of the periodic table of elements.
Patent CA-2023380-A1 (CA)
Title: Silicon carboxide fibers from gel spinning cyclosiloxane polymer precursors
Inventor: LEUNG ROGER Y
IPC: D01F9/10
Filed: 1990-08-16
Abstract: ABSTRACT OF THE DISCLOSURE This invention relates to a black glass fiber which is resistant to oxidation at a temperature of about 1350°C and has the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0 and y ranges from about 0.5 to about 2Ø This invention also relates to a process for preparing a black glass fiber comprising reacting a silicon hydride group with a silicon olefinic group in thepresence of a hydrosilylation catalyst to give a cyclosiloxane polymer. The polymer is then spun into fiber, hardened and then pyrolyzed to give a black glass fiber.
Patent CA-2026547-A1 (CA)
Title: Olefin polymerization catalyst
Inventor: PIOTROWSKI ANDRZEJ M
IPC: C08F10/00
Filed: 1990-09-28
Abstract: OLEFIN POLYMERIZATION CATALYST                   ABSTRACT OF THE DISCLOSURE       Silicon or siloxane diols react with dicyclopentadienyl zirconium compounds to form catalytically active compositions. these compositions can be used to polymerize ethylene when combined with methylaluminoxane.
Patent CA-2027714-A1 (CA)
Title: Method of measurement in biological systems
Inventor: TURTLETAUB KENNETH W
IPC: G01N33/60
Filed: 1990-10-16
Abstract: Disclosed is a method of quantifying molecules in biological substances, comprising: a. selecting a biological host comprising at least one biological substance in which radioisotopes are present in concentrations equal to or less than the concentration in the ambient biosphere, b. preparing a radioisotope-labeled reactive chemical specie, c. administering the chemical specie to the biological host in doses sufficently low to avoid significant damage to the host's biological system, d. allowing a period of time to elapse sufficient for dissemination and reaction of the chemical specie with the host throughout the biological system of the host, e. isolating a reacted fraction of a sample of the biological substance from the host in a manner sufficient to avoid contamination of the fraction from extraneous sources of the radioisotope, f. converting the fraction of the biological substance to a product material which efficiently produces charged ions in an ion source without introduction of significance isotopic fractionation, and, g. measuring the radioisotope concentration in the product material using an accelerator mass spectrometer.
Patent CA-2030142-A1 (CA)
Inventor: HARUKI TOSHINOBU
IPC: H04N9/73
Filed: 1990-11-16
Abstract: 64 regions are set on an image sensed picture of a video camera, where evaluating values r ij, b ij, and y ij are obtained by averaging color difference signals R-Y and B-Y and luminance signal Y obtained from an image sensing signal for over 1 field period by each region.  When determination is made that the difference in the evaluating values between two continuing regions do not exceed a predetermined value according to the obtained evaluating values, that is, when determination is made that continuing regions have the same color, the weighing amount of the color evaluating values of a corresponding region is reduced in producing gain control signals regarding the color difference signals.  As a result, the effect of objects of the same color towards white balance adjustment is reduced.
Patent CA-2030877-A1 (CA)
Title: Microcrystal negative ion field generators
Inventor: DEWBERRY GEORGE M
IPC: A01M29/00
Filed: 1990-11-26
Abstract: MICROCRYSTAL NEGATIVE ION FIELD GENERATORS     Abstract A plurality of electrochemically oxidized aluminum plates placed in specific indoor and outdoor geometric patterns control and remove insect pests. Although the explanation for the effectiveness of the plates is not completely understood, the surface crystal structure of the plates is believed to generate magnetic fields and negative ion fields and apparently the negative ion fields disturb and repel insect pests from the area. Negative ion fields do not disturb and are apparently beneficial to higher mammals and humans, therefore the plates are conducive to human activities while repelling insect pests.
Patent CA-2031417-A1 (CA)
Title: Method of producing mis transistor having gate electrode of matched conductivity type
Inventor: AKAMINE TADAO
IPC: H01L29/78
Filed: 1990-12-04
Abstract: ABSTRACT OF THE DISCLOSURE            A method of producing an MIS transistor wherein a substrate is prepared                   with a gate electrode and a semiconductor layer which defines a source region and a drain region.  A natural oxide film is removed from a surface of the gate electrode and from a surface of the semiconductor layer to expose an active surface.  A source gas containing an impurity component is applied to the exposed active surface to deposit thereon an impurity adsorption film.  The substrate is annealed to diffuse the impurity component from the impurity adsorption film into the gate electrode and concurrently into the semiconductor layer to form the source and drain regions.          The gate electrode has the same conductivity type as that of the source and drain regions.
Patent CA-2032685-A1 (CA)
Inventor: MCCARTHY MICHAEL D
IPC: B65G19/28
Filed: 1990-12-19
Abstract: A trough for a livestock feed conveyor, the conveyor having conveying devices  such as paddles residing in the trough and a drive unit for moving the conveying devices within the trough so as to convey the feed.  In a preferred embodiment, the trough is constructed of an upper trough portion, a lower trough portion attached to the upper trough portion,  each trough portion including segments,  with transverse boundaries between the segments, connecting plates for connecting the segments of each of the trough portions together, the relative lengths of the segments of both trough portions being chosen and assembled so that the boundaries  between  segments  of  the  upper  trough portion do not coincide with the boundaries between sections of the lower trough portion.  According to a preferred embodiment, the connecting plates are splice plates removably connected to a leading end of one segment and a trailing end of an adjacent segment of the upper trough portion,  and to the lower trough portion at a position spaced apart from and between the two ends of any segment of the lower trough portion.
Patent CA-2033467-A1 (CA)
Title: Method and apparatus for the modulation and demodulation of spread spectrum radio signals
Inventor: OMURA JIMMY K
IPC: H04B1/7077
Filed: 1990-12-31
Abstract: ABSTRACT A spread spectrum receiver with filters matched to transmitter chip codes are implemented in digital circuits along with a digital circuit for acquisition and tracking of the arrival times of the chip codes. The digital circuit implementations are used for the noncoherent demodulation of pulse position spread spectrum modulation signals where the pulse is a carrier(modulator)by a chip code and for the noncoherent demodulation of multiple chip code modulation signals where each information symbol is represented by one of several chip codes modulating a carrier.
Patent CA-2035670-A1 (CA)
Title: Kwik-krib/super forms
Inventor: LUSTIG WILLIAM H
IPC: E01C19/50
Filed: 1991-02-04
Abstract: The forming apparatus herein is horizontally elongated and highly flexible.  This apparatus is constructed in various lengths and widths depending on the users requirements.  Hereon vertical tabs are welded to the outside of the form at pre-determined intervals to support angled iron to achieve horizontally straight and sturdy forming.  Whereby removing said angled iron, you are able to achieve any desired curve, whether concave or convex.  A manually adjust-able apparatus, consisting of two sections of tube steel, one having a larger inside diameter than the outside diameter of the other, wherein assembled are slidable for horizontal adjusting of the said forms.        Hereon, welded to the said adjuster, a vertical round tube having a set screw within, holds a vertical steel rod.  Herein the steel rod is driven into the earth for stability and vertical adjusting is achieved by means of the set screw.  Hereon each length of form, end plates are welded at ninety degree angles, whereby two sections can be assembled by means of male and female connection.  By means of each section's ability to connect, these forms can be assembled and dismantled for transportation from job site to job site.
Patent CA-2035776-A1 (CA)
Title: Sticking sheet
Inventor: MATSUGUCHI NOBORU
IPC: C09J7/21
Filed: 1991-02-06
Abstract: ABSTRACT OF THE DISCLOSURE    A sticking comprising a base material; a heat adhesive resin layer,  formed on one principal surface of the base material, for sticking the base material to a material to be stuck;  and  an  adhesive  inhibiting  portion,  dispersedly formed on the surface of the heat adhesive resin layer, for reducing the adhesive strength of the heat adhesive resin layer.    According  to the  present  invention,  the  sticking surface to be sticked to the material to be stuck is divided into the exposed portion of the heat adhesive resin layer and the adhesion inhibiting portion for reducing the adhe-sive strength of the heat adhesive resin layer.  Therefore, when the heated sticking surface is sticked to the material to be stuck, the exposed portion of the heat adhesive resin layer is strongly sticked to the material to be stuck while the portion covered with the adhesion inhibiting portion thereof is weakly sticked thereto.
Patent CA-2037590-A1 (CA)
Title: Pyridine derivatives and processes for their synthesis
Inventor: MURTIASHAW CHARLES W
IPC: C07D491/052
Filed: 1991-03-05
Abstract: Abstract The present invention relates to processes and inter-mediates for the preparation of spiro-heteroazolones of the formula:                               (wherein R3 is lower alkyl).  The latter compounds are useful as aldose reductase inhibitors.  The intermediates include those of the formulae  ,      ,   and    (wherein R3 is lower alkyl, Q is Cl, Br, F or OSO2R4 [where R4 is alkyl, CF3 or optionally substituted phenyl] and Z is negative charge, H or hydroxy-protecting group).
Patent CA-2042336-A1 (CA)
Title: Piperidyloxy-and quinuclidinyloxy-isoxazole, derivatives, their preparation and their therapeutic use
Inventor: NAGANO MITSUO
IPC: C07D261/20
Filed: 1991-05-10
Abstract: ABSTRACT OF THE DISCLOSURE     Compounds of formula (I):                                         (I) [in which: R1 is hydrogen, halogen or alkyl; R2 is hydrogen, alkyl, optionally substituted phenyl or a heterocycle; or R1 and R2 together form a group of formula -CR4=CR5-CR6=CR7-, where R4, R5, R6 and R7 are hydrogen, halogen, alkyl group, alkoxy, halomethyl, alkylamino, dialkylamino, hydroxy, nitro, aliphatic carboxylic acylamino or amino; and R3 is piperidyl, substituted piperidyl or quinuclidinyl] are useful in the treatment and prophylaxis of cognitive disorders, notably senile dementia, including Alzheimer's disease.  Processes for preparing the compounds are also provided.