baber/WOPTO huggingface dataset:
Patent CA-2030883-A1 (CA)
Title: Chemiluminescent solution based on substituted anthracene
Inventor: VAN MOER ANDRE
IPC: B44F1/12
Filed: 1990-11-26
Abstract: 31,306 CHEMILUMINESCENT SOLUTION BASED ON SUBSTITUTED ANTHRACENE                ABSTRACT OF THE INVENTION      New derivatives of anthracene for the emission of a blue chemiluminescent light are disclosed.  The derivatives are  of  9,10-bisphenylanthracene  substituted  at  the  2 position of the anthracene ring and on the phenyl groups. The production of turquoise chemiluminescent light is also disclosed  by  mixing  said  derivatives  with  a  green 9,10-bis(phenylethynyl)anthracene.
Patent CA-2031251-A1 (CA)
Title: Method of doping impurity into semiconductor films and patterned semiconductor strip
Inventor: AOKI KENJI
IPC: H01L21/225
Filed: 1990-11-30
Abstract: ABSTRACT     A patterned semiconductor strip is provided on a substrate.  An inert coating is removed from a surface of the semiconductor strip to expose an active surface.  A source gas containing an impurity component is applied to the exposed active surface, whereat an impurity film containing the impurity component is adsorbed.  The substrate is heated to diffuse the impurity component from the impurity film into the semiconductor strip and to activate the diffused impurity component.
Patent CA-2041434-A1 (CA)
Title: Resist composition
Inventor: KITAO TEIJIRO
IPC: G03F7/022
Filed: 1991-04-29
Abstract: ABSTRACT OF THE DISCLOSURE       A resist composition comprising an alkali-soluble resin, a 1,2-quinone diazide compound and a compound of the general formula (I):                                        (I) wherein Z is an oxygen or sulfur atom or a group of the formula: >N-R4 in which R4 is a hydrogen atom or an alkyl group; R1, R2 and R3 are the same or different and inde-pendently a hydrogen atom, a substituted or unsubstituted alkyl group, a halogen atom, a hydroxyl group, a cyano group or a group of the formula: -OCOR" in which R" is a substituted or unsubstituted alkyl group; and X and Y are independently a cyano group or a group of the formula:      , -COOR or -CONHR' in which R is an alkyl group and R' is a hydrogen atom or an aryl group, which is suitable for the formation of very fine patterns on a substrate having a high reflectance.
Patent CA-2042512-A1 (CA)
Title: Gas-recirculating electrode for electrochemical system
Inventor: LUDWIG FRANK A
IPC: H01M12/08
Filed: 1991-05-14
Abstract: GAS-RECIRCULATING ELECTRODE  FOR ELECTROCHEMICAL SYSTEM      ABSTRACT     An electrode apparatus for use in an electrochemical cell, which permits hydrogen gas generated at the cathode to be recirculated directly to the anode.  The electrode apparatus comprises:          a.   an ion-permeable membrane (10) separating the anode compartment (12) and cathode compartment (14) and liquids contained therein;          b.   hydrogen electrodes, cathode (16) and anode (18), in their respective compartments (12 and 14) and in contact with the membrane (10), each comprising a porous hydrophobic catalytic structure which permits the passage of hydrogen gas both along and perpendicular to the longitudinal surface (20 and 26) of the electrode (12 and 14) and having an external portion (24 and 30) extending outside of the electrode compartment (12 and 14) and exposing the edge surface (22 and 28) of the electrode; and c.   a gas chamber (32) connected to the external portions (24 and 30) of the electrodes and providing for transfer of gas from the cathode (18) directly to the anode (16).     Hydrogen gas generated at the cathode (18) passes through the cathode and along the length (26) thereof to the edge surface (28) thereof, into the gas chamber (32), and then to the edge surface (22) of the anode and along and through the length (20) of the anode (16). Thus, hydrogen gas from the cathode (18) is recirculated to replenish hydrogen consumed at the anode (16) during operation of the electrochemical cell.
Patent CA-2043853-A1 (CA)
Title: Photosetting impression materials
Inventor: MUELLER HANNS P
IPC: A61K6/90
Filed: 1991-06-04
Abstract: ABSTRACT OF THE DISCLOSURE      A method of making a dental impression which comprises applying to the structure of which an impression is to be made a special prepolymer.  The prepolymer is composed of units of at least one macrodiol, at least one aliphatic polyisocyanate, and an unsaturated monoalcohol as chain terminator, wherein the average functionality of the prepolymer based on the unsat-urated groups is >2.     Le A 27 590
Patent CA-2045012-A1 (CA)
Title: Detection of poor metabolizers of drugs
Inventor: MEYER URS A
IPC: C12Q1/68
Filed: 1991-06-19
Abstract: A method for the detection of poor metabolizers of drugs using PCR technology as described comprising a) optionally amplifying a gene coding for an enzyme known to be responsible for the metabolization of drugs, thereby separating it from possible closely related pseudogens, b) amplifying different allelic forms of the gene of step a) and c) detecting the product of step b). Primers for amplification of genes coding for drug metabolizing enzymes, especially genes coding for enzymes responsible for the debrisoquine or acetylation phenotype, are also disclosed.
Patent CA-2045014-A1 (CA)
Title: Voltage controlled oscillator
Inventor: LAMACRAFT KEVIN
IPC: H03B1/00
Filed: 1991-06-19
Abstract: ABSTRACT                 VOLTAGE CONTROLLED OSCILLATOR           A voltage-controlled oscillator using planar microstrip technology and primarily for the 37 to 39.5 GHz frequency band comprises a strip-line resonator, a negative resistance device mounted adjacent the centre of said resonator, respective variable capacitance devices mounted adjacent the ends of said resonator, high impedance means coupling said resonator to an output path, and means to apply bias signals to said negative resistance device and said variable capacitance devices.     Figure 2
Patent CA-2049806-A1 (CA)
Inventor: GAFFNEY THOMAS R
IPC: C01B31/08
Filed: 1991-08-23
Abstract: A process is provided for making a modified carbon molecular sieve which is suitable for separating gases having different adsorption rates on the sieve.  The process involves modifying a starting sieve support having a majority of micropores with an effective pore size of about 4.5 to 8 angstroms, with a two-step process in which the sieve is contacted with two different volatile carbon-containing organic compounds, preferably hydrocarbons, which have different molecular dimensions.  The compound used in the first step is larger than that in the second step, so that the pore openings of the micro-pores of the support are narrowed successively in two distinct steps without filling the micropores themselves.  The invention also discloses an improved carbon molecular sieve and the separation of gases, such as oxygen from nitrogen, by the use of this improved adsorbent.
Patent CA-2053960-A1 (CA)
Title: Switch actuator
Inventor: SCHAFFER JOHN S
IPC: H01H3/00
Filed: 1991-10-22
Abstract: A switch actuator includes an operator plate which provides a structure for mounting the actuator and for supporting the remaining parts. An operator shaft receives torque from an operating handle and via mechanical coupling, transmits torque to a torque plate subassembly. The torque plate compresses a torsion spring which provides temporary energy storage for the switch actuator. The torsion spring acts on a reaction plate subassembly which mechanically couples the torque generated by the spring to a rotor tube to operate the switch contacts. A spring guide subassembly maintains the spring in a predefined region to prevent the spring from deforming into a non-energy storing position during operation. The operator shaft, torque plate, reaction plate, spring guide, and spring are nested substantially concentrically about a predefined mounting axis. Left and right cam followers and a pivot lever combine to form a latch mechanism to prevent the switch actuator from changing position except when operated by a user.
Patent CA-2056851-A1 (CA)
Title: Low-Frequency Induction Heater
Inventor: IGUCHI ATSUSHI
IPC: H05B6/36
Filed: 1991-12-06
Abstract: In  a  low-frequency  induction heater  comprising a primary  side  coil  having  a  core  and  a  secondary  side conductive  hollow  cylindrical  member   surrounding  the primary side coil,  it is sought to improve the Joule heat generation  efficiency  and  solve  problems  peculiar  to composite  materials   such   as   thermal   deformation, electrolytic  corrosion  and  difficulty  of  manufacture  by forming the conductive hollow cylindrical member using a sole stainless steel material having a thickness  ranging from 2 mm to 6 mm.  In a preferred embodiment, a coil 2 is wound  around  a  rod-like  core  1,  which  is  in  turn surrounded  by  a  conductive  hollow  cylindrical  member  3 made of a sole stainless steel material having a thickness ranging  from  2  mm  to  6 mm.   When an AC  current  passes through the coil 2,  an alternating magnetic field is set up  in  the  axial  direction  of  the  coil  2,  causing  an inducted  current  in  the  conductive  hollow  cylindrical member 3.   Joule heat is thus generated in the member 3 due to the electric resistance thereof.
Patent CA-2057899-A1 (CA)
Title: Compositions and polymer fabrics treated with the same
Inventor: LAL KASTURI
IPC: D06M13/244
Filed: 1991-02-28
Abstract: This invention relates to a composition prepared by reacting: (a) at least one reaction product of a hydrocarbyl substituted carboxylic acid or anhydride having a hydrocarbyl group containing from about 8 to about 150 carbon atoms and at least one polyamine wherein the reaction product has at least one NH group capable of addition to double bond; with (b) at least one sulfo compound represented by formula (I), wherein each R1 is independently hydrogen or a hydrocarbyl group; a is zero or one; Q is a hydrocarbylene group or -C(X)N(R2)Q'-; R2 is hydrogen or a hydrocarbyl group; X is sulfur or oxygen; each Q' is a hydrocarbylene group; and Z is -S(O)OH, or -S(O)2OH or an ester, a metal salt or an ammonium salt of the sulfo compound. The invention also relates to polymer fabrics treated with the compositions of the present invention. The treated polymer fabrics have improved wicking/wetting characteristics. Further, the treated polymer fabrics maintain these characteristics upon repeated exposure to fluids.
Patent CA-2058417-A1 (CA)
Inventor: FUKAWA ISABURO
IPC: C08G65/38
Filed: 1990-03-16
Abstract: There are disclosed dibenzofuran amorphous polymer comprising a recurring unit represented by following formula (II) and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in N-methylpyrrolidone at 25°C, a process for producing said amorphous polymer, a dibenzofuran copolymer comprising, in addition to a recurring unit represented by following formula (II), at least one type of recurring unit represented by following general formula (III) in a specific proportion and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in concentrated sulfuric acid at 25°C, and a process for producing said copolymer.     Formula:             (see fig. II) General Formula (III):     (see fig. III) wherein A is -O-, -CO-, -S-, SO2-, a divalent alkylene group or a single bond and n is a number of 0, 1 or 2.          There are also disclosed benzofuran derivatives useful as a starting material and a process for producing said derivatives.  The above-mentioned amorphous polymer and copolymer are excellent in stability at the time of molding, low in polarity an low in moisture absorption, so that they are useful as starting materials for the manufacture of molded articles.
Patent CA-2059934-A1 (CA)
Title: Power pedestal television, telephone and luminaire adapter unit
Inventor: HORN DALE W
IPC: H02G9/10
Filed: 1992-01-23
Abstract: POWER PEDESTAL TELEVISION, TELEPHONE      AND LUMINAIRE ADAPTER UNIT                 ABSTRACT OF THE DISCLOSURE  A front plate adapter panel containing television and tele-phone hookups can be factory-installed or field-installed within existing metallic power pedestal enclosures to provide such telephone and television facility along with electric power fa-cility.  A weather-tight luminaire adapter unit is attached to the top surface of such power pedestals to provide illumination to the electrical components contained within the power pedestal enclosure as well as to provide "stumble lighting" to the ground area in the immediate vicinity of the power pedestal.
Patent CA-2063450-A1 (CA)
Title: Device for attaching working implements to a tractor
Inventor: STEINER JOSEF
IPC: A01B71/06
Filed: 1991-04-30
Abstract: A device for attaching an agricultural implement (34) to a tractor (1) has a coupling frame (5) secured to the tractor (1) and a connecting frame (35) secured to the implement (34) which can be coupled to the coupling frame (5). The power take-off shaft (13) of the tractor (1) is connected via a propeller shaft (14) to a coupling component (15) arranged to rotate in the coupling frame (5). The coupling component (15) on the coupling frame (5) can be connected to a coupling component (55) on the connecting frame (35). The coupling component (15) on the coupling frame (5) can move radially, axially and angularly in the plane of the coupling frame (5).
Patent CA-2064754-A1 (CA)
Inventor: BARANOV VLADIMIR I
IPC: C07K14/585
Filed: 1990-06-14
Abstract: Polypeptides are obtained in a cell-free system containing exogenous RNA-polymerase, protein genes in the form of DNA molecules, nucleic acid and substrates. It contains, as substrates, ATP, GTP, CTP, UTP and amino acids. The products obtained in the system include the desired polypeptide AMP, GDP, CDP, UDP, pyrophosphate and non-organic phosphate. In the course of translation process, as substrates are consumed and products are obtained, products are removed from the system, containing the desired polypeptide, AMP, GDP, CDP, UDP, pyrophosphate and non-organic phosphate, while ATP, GTP, CTP, UTP and amino acids are simultaneously fed in the system, as substrates, to maintain their initial concentration.
Patent CA-2066182-A1 (CA)
Title: Method for preparing imide-containing polymers
Inventor: NEWMAN THOMAS H
IPC: C08F279/00
Filed: 1990-09-25
Abstract: Imide-containing polymers of styrene-type monomers are prepared by a process comprising solution polymerizing under free radical polymerization conditions a polymerizable monomer composition comprising at least one vinylaromatic monomer and at least one maleamic monocarboxylic acid monomer.
Patent CA-2067820-A1 (CA)
Title: Iontophoresis device and method using a rate-controlling membrane
Inventor: VENKATESHWARAN SRINIVASAN
IPC: A61M37/00
Filed: 1990-10-23
Abstract: An iontophoresis device comprising a drug reservoir containing the drug in ionic form and in communication with the skin, a skin permeation enhancing agent contained in the reservoir or in a second reservoir also in communication with the skin, an electrode (12) in electrical communication with the drug reservoir, another reservoir containing electrolyte and, optionally, skin permeation enhancing agent and drug in communication with the skin at a location separated from the drug reservoir, an electrode in contact with the electrolyte-containing reservoir, a D.C. power source connected to the electrodes and rate controlling membranes (14) interposed between the reservoirs and the skin that are impermeable to drug in the absence of a voltage difference between the electrodes and permeable to the drug in the presence of a voltage difference. The skin permeation enhancing agent eliminates the skin as a rate-controlling element, thus making the rate of drug administration dependent upon the membrane permeability, which in turn is controlled electrically.
Patent CA-2068509-A1 (CA)
IPC: G02B6/44
Filed: 1992-04-07
Abstract: A steam-resistant optical fiber cable (20) includes a core (21) comprising a plurality of optical fiber ribbons (22,22) disposed within a tubular member (30) comprised of a high temperature resistant material. The tubular member is disposed within a hermetic sealing member (40) which comprises a metal of low electrochemical activity having a sealed seam. An outer jacket (50) is disposed about the hermetic sealing member and in a preferred embodiment is characterized by resistance to degradation in high temperature, high humidity steam environments. The core may be unfilled or filled with a waterblocking material and in a preferred embodiment, a waterblocking member is interposed between the tubular member and the hermetic sealing member.
Patent CA-2068749-A1 (CA)
Title: Pulverized absorbent material for aqueous liquids based on a water-swellable polymer
Inventor: BREHM HELMUET
IPC: C08K5/17
Filed: 1992-05-15
Abstract: A B S T R A C T            A powdery absorbing material for aqueous liquids based on a water-swellable powdery polymer with at least 0.2 equivalents carboxyl groups per 100 parts by weight which are neu-tralized by 50 to 99, advantageously by at least 80 mol-%. The absorbent is obtained by treating the wa-ter-swellable carboxyl-groups-containing polymer with a solution of an N-(hydroxyalkyl).beta.-(meth)-alanine es-ter or with the polycondensation products thereof. As solvent for the agent water is used which either com-prises water-miscible organic diluents evaporating on heating the mixture, or non-evaporating ones, i.e., diluents remaining in the polymer.
Patent CA-2070066-A1 (CA)
Inventor: BREUER THEO
IPC: A41H37/10
Filed: 1992-05-29
Abstract: Abstract The invention concerns a machine (1) for fastening buttons, studs or the like, preferably on garments, which buttons, studs or the like consist of an upper (124, 125) and lower (67, 68) part, which are fed to an upper tool (9) and lower tool (10) from magazines and, with the material (167) as intermediate layer, are lock-joined to each other by the stroke of a striker  (140);  to  optimize  the  use  of  different button parts, it is suggested that the upper tools (9)  and  the  lower  tools  (10)  be  arranged  in  a position facing each other, in each case in straight rows behind one another on the upper (51) and lower arm (48)  of a U-shaped carriage (30),  through the positioning of which each upper tool (9) to be used enters  into  coupling  position  with  the  striker (140).
Patent CA-2072267-A1 (CA)
Title: Glass-encapsulated abrasive particles for vitreous bond grinding wheels
Inventor: ST PIERRE PHILLIPE D S
IPC: C09K3/14
Filed: 1992-06-25
Abstract: GLASS-ENCAPSULATED ABRASIVE PARTICLES     FOR VITREOUS BOND GRINDING WHEELS     ABSTRACT OF THE DISCLOSURE Broadly, the present invention comprises substantially spherical glass globules encapsulating an abrasive particle. The globules are suitable for incorporating into a vitreous bonded grinding wheel and can be made by the steps comprising forming amixture of glass powder, abrasive particles, and a fluent binder. The binder is fused to form a solid mass containing said glass powder and abrasive particles. The solid mass then is attrited into discrete particles. A desired size fraction of particles of the attrited mass then is separated from any undersize and oversize particle fractions. Finally, the desired size fraction is heated to fuse the glass particles into substantially spherical globules which encapsulate one or more of said abrasive particles. The globules are suitable, then, for incorporation into vitreous bonded grinding wheels.
Patent CA-2072632-A1 (CA)
Title: Structure and method for fabricating indium phosphide/indium gallium arsenide phosphide buried heterostructure semiconductor lasers
Inventor: HOLMSTROM ROGER P
IPC: H01S5/323
Filed: 1991-09-12
Abstract: A semiconductor laser having a high modulation band-width is made by utilizing an InGaAsP cap layer (14) and an InGaAsP active layer (12) of different crystal structure. Channels (21 and 22) are anisotropically etched through the cap (14), cladding (13) and active layers (12) and partially through the buffer layer (11). The active (12) and cap layers (14) are laterally etched and a semi-insulating material (30) is overlayed the sidewalls. A further etching leaves a thin wall (31 and 32) of the semi-insulating material surrounding the active layer (12). 1.3 µm InGaAsP lasers with 3 dB bandwidths of 24 GHz and intrinsic resonance frequencies in excess of 22 GHz have been successfully fabricated. This is the highest bandwidth ever reported for a semiconductor laser, and the highest resonance frequency for InGaAsP lasers. Excellent modulation efficiencies are observed to high frequencies.
Patent CA-2076045-A1 (CA)
Inventor: HARRIS ALBERT P
IPC: A63B53/04
Filed: 1990-08-13
Abstract: A golf putter (10) includes a putter head (16) formed of a novel composition including a portion of polytetrafluoroethylene resin on the face (26) of the putter head (16) to minimize friction between the putter (10) and the golf ball (50). The entire putter head (16) may be formed of an alloy including a portion of polytetrafluoroethylene resin. The putter (10) includes a shaft (14) which is connected to the putter head (16) whereby a line extending along the surface (56) of the shaft (14) corresponding to the face (26) hangs vertically when the putter (10) is suspended by the grip (12) in the manner of a pendulum. Additionally, the putter head (16) is provided with at least one alignment line (22) along the top surface of the putter head (16), the alignment line (22) being perpendicular to the face (26) of the head (16). The shaft (14) is connected to the head (16) at a region of intersection lying in the alignment line (22), the portion (20) of the shaft (14) adjacent the region of intersection being coated with material of a color corresponding to the color of the alignment line (22).
Patent CA-2079632-A1 (CA)
Inventor: JACKSON JOHN R
IPC: C02F9/00
Filed: 1992-10-01
Abstract: A process for precipitating and removing chromium compounds in which chromium is in the hexavalent state from aqueous liquids, particularly, alkaline earth metal or alkali metal chlorate-rich solutions containing chloride, chlorate, andbichromate produced by the electrolysis of brine. In the process,hydroxylamine, hydroxylamine sulfate, hyroxylamine formate or hydroxylamine hydrochloride is used as a reducing agent to react and co-precipitate at a neutral or acid pH with hexavalent chromium ions present in the aqueous liquid, the reaction and precipitation taking place, generally, at a pH of about 4.0 to about 6.5 and, a temperature of about 50°C to about 100°C. Precipitated oxides and hydroxides of divalent and trivalent chromium can be removed, for instance, by filtration. Reaction time to achieve a level of about 10 parts per million or less of chromium ions in the filtrate varies from less than about 5 hours to less than about 1 hour depending upon selection of reaction temperature and reaction pH. For instance to achieve a level of 2 parts per million or less chromium ion after removal of the precipitate formed during the reaction at a pH of 5.0 - 5.5, a reaction time of 10 minutes at a temperature of 90° - 95° C is required. A reaction time of 30 minutes at a temperature of 70° C or 120 minutes at a temperature of 60° C provides a similar level of chromium ion removal.
Patent CA-2079823-A1 (CA)
Title: Lubricating compositions containing alkaline earth metal salts
Inventor: UDDING ANNE C
IPC: C10M163/00
Filed: 1992-10-05
Abstract: ABSTRACT LUBRICATING COMPOSITIONS CONTAINING ALKALINE EARTH METAL SALTS      The invention provides a lubricating oil composition comprising a major proportion of a lubricating oil and a minor proportion of an alkaline earth metal salt selected from calcium and magnesium salts of a hydroxyalkyl sulphonic acid of the general formula:                      (I) wherein each of R1, R2, R3 and R4 independently represents a hydrogen atom, or a linear or branched alkyl group, subject to the total number of carbon atoms in R1, R2, R3 and R4 taken together being in the range from 8 to 30; lubricating oil concentrates containing said salts; a process for preparing said composition: and the use of said salts as detergent additives in lubricating oil compositions.