baber/WOPTO huggingface dataset:
Patent CA-2005853-A1 (CA)
Title: Method for plugging a high permeability zone with a heat activated gel
Inventor: SHU PAUL
IPC: E21B43/16
Filed: 1989-12-18
Abstract: METHOD FOR SELECTIVELY PLUGGING A ZONE HAVING VARYING PERMEABILITIES WITH A TEMPERATURE ACTIVATED GEL                           ABSTRACT          A process for closing pores in a heated steam swept zone of a formation having zones of varying permeabilities where a temperature activated aqueous gellable mixture is utilized following a steam flooding or steam stimulation enhanced oil recovery method. After being placed into the steam swept zone having varying permeabilities, a temperature above 300°F activates components in the gellable mixture which causes a solid gel to form which closes pores in the steam swept zone.  A spacer volume of cold water is pumped into the formation to remove any ungelled mixture.  Steam is directed into an unswept zone and hydrocarbonaceous fluids recovered therefrom.  Polymers utilized include polyvinyl alcohol and polyacrylamide cross-linked with phenol, and an aldehyde producing compound sufficient to form a phenolic resin in situ.
Patent CA-2010463-A1 (CA)
Title: Polyimide membrane having improved flux
Inventor: BURGOYNE WILLIAM F JR
IPC: C08G73/10
Filed: 1990-02-20
Abstract: ABSTRACT      The present invention is a class of polyimide membranes wherein the diamine portion of the polymer structure is an alkylated bisaniline.  The bridging group of the diamine possesses restricted, rotatable rigid, or low Van Der Waal energy substituents which are orthogonal to the polymer backbone.  These polyamide membranes exhibit enhanced gas flux and are useful in various gas separation applications,
Patent CA-2011582-A1 (CA)
Title: Mercury discharge lamp
Inventor: WITTMANN HORST
IPC: H01J61/72
Filed: 1990-03-06
Abstract: ABSTRACT OF THE DISCLOSURE           To improve mass production of fluorescent lamps, and introduction of mercury within the interior thereof, the lamp mount includes an electrically conductive strip, band or wire secured within the vessel, to which a heater wire (11, 31, 40) is connected, the heater wire being melt-connected to extend into the glass capsule, forming therein a narrow V, or U-shaped structure.  Upon application of a high frequency field, the heater wire will heat and open the glass capsule in the region of the melt-through connection thereof, thus liberating mercury previously introduced into the glass capsule, for example in the form of a drop, a pellet of porous substance with mercury dispersed therein, or the like.
Patent CA-2013666-A1 (CA)
Title: T-junction for double-walled corrugated tube
Inventor: LUPKE MANFRED A A
IPC: B29C65/02
Filed: 1990-04-02
Abstract: ABSTRACT           This invention concerns branched connectors for joining single walled corrugated or double walled corrugated pipe.  A method of forming a branched junction comprises forming tube of the type to be joined with smooth patches which are later excised so that sections of the tube may be fitted and sealed together to form the connectors.  The invention includes special mold blocks for use in a travelling mold tunnel to form the smooth regions and/or special inserts for standard mold blocks to adapt them for forming smooth walled regions.
Patent CA-2014059-A1 (CA)
Title: Cholesteric liquid crystal polyester containing optically active group
Inventor: KOIDE NAOYUKI
IPC: C08G63/60
Filed: 1990-04-06
Abstract: A cholesteric liquid crystal polyester containing an optically active group, constituted of the structural units: (A) -O-Ar-CO- where Ar is a bivalent aromatic ring having 6 to 12 carbons;          (B)   where the mark * denotes optical activity; (C) -O-R1-O-;          (D) -CO-R2-CO-; where R1 and R2 each represent a bi-valent aromatic ring having 6 to 18 carbons, a bivalent aliphatic chain having 2 to 16 carbons, or a bivalent alicyclic ring having 6 to 18 carbons. The liquid crystal polyester comprises 20 to 90 mole % of (A), 5 to 40 mole % of (B), 5 to 40  moles % of (C), and 0 to 30 mole % of (D), and has a reduced viscosity of not less than 0.2 dl/g at a temperature of 60°C at a concentration of 0.5 g/dl in a mixed solvent of phenol/tetrachloro-ethane (60/40 by weight). Such a liquid crystal polyester is moldable in a molten state, has high strength and high modulus of elasticity, exhibits less mechanical anisotropy, and exhibits selective reflection in the visible light region under a certain condition.
Patent CA-2016138-A1 (CA)
Title: Easy way pig puller
Inventor: CINNAMON BILL
IPC: B25B33/00
Filed: 1990-05-07
Abstract: A B S T R A C T    The PIG PULLER is inserted into the Pig Reciever with Handles left open therfore the Paddle is in a horizontal position. Once inserted to the end of the Pig Reciever Barrel the Handles are then squeezed together, thus pulling the Wire that is attached to the Paddle and the Handle causes the Paddle to change from a horizontal postion to a vertical postion. Holding the Handle squeezed, remove the PIG PULLER from the Reciever, retrieving all the Pigs in the Reciever.
Patent CA-2019408-A1 (CA)
Title: Lymphocyte-activating factor, method for the preparation thereof and method for the proliferation of antibody-forming lymphocytes and production of antibody using the same
Inventor: TAKAHASHI NAOMMY
IPC: C12N5/07
Filed: 1990-06-20
Abstract: ABSTRACT OF THE DISCLOSURE            LYMPHOCYTE-ACTIVATING FACTOR, METHOD FOR THE PREPARATION THEREOF AND METHOD FOR THE PROLIFERATION OF ANTIBOTY-FORMING LYMPHOCYTES AND PRODUCTION OF ANTIBODY USING THE SAME      A novel lymphocyte-activating factor having an activity for stimulating proliferation and antibody-production of lymphocytes can be derived from small-intestine mucosal epithelia of a mammalian animal such as cattle by mashing the mucosal epithelia, removing the solid matter from the mush, dialyzing the extract, and precipitating the effective fraction in the undialyzed extract by salting-out.  The lymphocyte-activating factor can be used for the production of an antibody against pathogenic viruses by culturing lymphocytes inoculated with the virus in a medium containing the factor.
Patent CA-2019840-A1 (CA)
Title: Process and apparatus for performing chemical reactions
Inventor: FLESHER PETER
IPC: C08F8/00
Filed: 1990-06-26
Abstract: ABSTRACT            Process and Apparatus for Performing Chemical Reactions High  molecular  weight  polymer  that  can  form  a viscous aqueous solution is chemically modified by mixing the previously formed polymer (as a powder, reverse phase dispersion or oil-in-water emulsion) with water and the reagent for effecting the chemical modification so as to form a viscous aqueous mixture having a viscosity of at least  1000cps  (Brookfield  RVT)  and  then  feeding  this mixture  as intermittent batches into one end of a tower through which it moves with substantially plug flow and from which it is withdrawn, at the end of the reaction, as intermittent batches.   The apparatus for this purpose is also novel.
Patent CA-2020417-A1 (CA)
Title: Cables a fibres optiques resistant a une saute de temperature a 350°c pendant une courte duree
Inventor: BONICEL JEAN-PIERRE
IPC: G02B6/44
Filed: 1990-07-04
Abstract: : Câble à fibres optiques résistant à une saute de température à 350.degree.C pendant une courte durée, comprenant a) au moins un élément porteur (1) en matériau composite fibres de verre-résine thermodurcissable, b)un support des fibres optiques formé par un jonc rainuré (2) entourant l'élément porteur ou un tube, de préférence muni dans son épaisseur d'éléments porteurs, ou de fibres à structure serrée, le jonc ou le tube étant un polymère thermoplastique, c)des fibres optiques (3) disposés dans les rainures du jonc ou l'intérieur du tube, d)d'une matière visqueuse (4) de remplissage des rainures ou du tube autour des fibres optiques, e)une enveloppe (5) constituée par un ruban de polymère thermoplastique, caractérisé en ce que le jonc rainuré (2) ou le tube, ou le revêtement secondaire de fibres à structure serrée, est en polyéthylène réticulé, la matière visqueuse (4) de remplissage des rainures est une résine silicone, et le polymère thermoplastique de l'enveloppe (5) est une résine polyimide. FIGURE A PUBLIER : Figure unique
Patent CA-2023129-A1 (CA)
Inventor: SHIMIZU SHIGEMI
IPC: F04B27/10
Filed: 1990-08-10
Abstract: A wobble plate compressor including a housing having a cylinder block provided with a plurality of cylinders and a crank chamber is disclosed.  A plurality of pistons are coupled to a wobble plate and slidably fitted in the cylinders.  A drive shaft is rotatably supported in the housing.  An inclined plate connected to the wobble plate is rotated by the drive shaft through a rotor.  The rotational motion of the inclined plate is converted into nutational motion of the wobble plate.  A rotation preventing mechanism is used to prevent rotational motion of the wobble plate.  The rotation preventing mechanism has a guide plate extending within the crank chamber, a cylindrical block including a vertical groove formed therein and retaining system for retaining the cylindrical block on the wobble plate such that the vertical groove is slidably fitted on the guide plate.  The retaining system includes a female screw formed on one of the periphery of the wobble plate and the upper surface of the cylindrical block and a male screw provided on the other of the periphery of the wobble plate and the upper surface of the cylindrical block.  When the male screw is screwed in the female screw, the cylindrical block is securely connected to the wobble plate by the retaining system.  The rotation preventing mechanism can thereby be easily assembled and disassembled.
Patent CA-2025231-A1 (CA)
Title: Cancer marker and monoclonal antibodies specific therefor
Inventor: COLEMAN PATRICK L
IPC: C07K16/00
Filed: 1990-09-12
Abstract: 43474 CAN lA                           ABSTRACT          Monoclonal antibodies specific for a cancer marker, as well as hybridoma cell lines producing such antibodies; a method of purifying the marker to an extent sufficient to use the marker for the production of such monoclonal antibodies; the purified marker itself; monoclonal antibodies prepared using the purified marker; and an assay for the marker using the monoclonal antibodies. The marker is one that: (1) exhibits RNA-releasing activity; (2) is detectable in the serum of substantially all patients having either disseminated or localized tumors by means of an assay for such RNA-releasing activity, and (3) exhibits a molecular weight of on the order of 70 kDa.
Patent CA-2025683-A1 (CA)
Inventor: IMAMURA HIROKATSU
IPC: B41M5/382
Filed: 1990-09-19
Abstract: When a temporary adhesive layer for peelably bonding a transfer-receiving  material  to  a  thermal  transfer  sheet comprising a substrate  film and a heat-fusible  ink layer disposed  on  one  side  thereof  is  caused  to  comprise  a specific adhesive,  an excellent composite thermal transfer material is provided.  In such a composite thermal transfer sheet,  the thermal transfer sheet is firmly bonded to the transfer-receiving material so as not to cause wrinkles or deviation, both of these members may easily be peeled from each other so that the ink layer is exactly transferred to the paper in a transfer region and it  is not  transferred thereto  at  all  in  a  non-transfer  region,  whereby  the transfer-receiving material is not contaminated.   Further,  when  at  least  one  selected  from  interfaces between  respective  layers,  interior  thereof  and  surfaces thereof  is  subjected  to  antistatic  treatment,  there  is provided  a  composite  thermal  transfer  sheet  causing  no trouble due to charging at  the time of or after printing operation.   Further, when at least one end portion of a sheet-type composite thermal transfer sheet is fixed, there is provided a  composite  thermal  transfer  sheet  wherein  unintended peeling is prevented.   Further,  when  an  end  portion  of  a  co-winding  type composite thermal transfer sheet is fixed, there is provided a composite thermal transfer sheet wherein troubles in paper-feeding and printing is prevented.    Further,  when  an  end  portion  of  a  co-winding  type composite thermal transfer sheet is preliminarily fixed to a winding tube, there is provided a composite thermal transfer sheet wherein the used thermal transfer sheet is easy to be handled and no problem occurs in secret-keeping.
Patent CA-2026299-A1 (CA)
Title: Antiplaque oral compositions
Inventor: ROBINSON RICHARD S
IPC: A61K8/368
Filed: 1990-09-26
Abstract: Abstract An antiplaque oral composition containing a low concentration of a sesquiterpene alcohol flavor compound to inhibit the formation of dental plaque in the presence of an additive selected from the group consisting of benzoic acid, a preservative, and a polycarboxylate and mixtures thereof, in an oral vehicle having a low pH of about 3-5.
Patent CA-2027146-A1 (CA)
Inventor: RAZAVI ABBAS
IPC: C08F110/06
Filed: 1990-10-09
Abstract: Syndiospecific catalysts and processes for the syn-diotactic propagation of a polymer chain derived from an ethyle-nically unsaturated monomer which contains 3 or more carbon atoms or is a substituted vinyl compound. The catalysts comprise unba-lanced stereorigid metallocenes in which a structural bridge is not required for stereorigidity. The ring structures of the metallocene catalyst are substituted cyclopentadienyl rings, which are sterically different from one another. The substituent groups on the cyclopentadienyl rings impart stereorigidity to the catalyst by virtue of a sterically hindered relationship between the rings sufficient to prevent rotation of the rings, or by vir-tue of the cyclopentadienyl groups being at a low kinetic energy state induced by the substituents to prevent rotation of the rings about their coordination axes at the temperature of .the catalyst. The catalyst is contacted with a C3+ alpha olefin or other ethylenically unsaturated compound in a polymerization reaction zone and maintained in contact with the catalyst in the reaction zone under polymerization conditions to produce a syn-diotactic polymer.
Patent CA-2028496-A1 (CA)
Title: Thiophene compounds and their pharmaceutical uses
Inventor: NAKAO TOHRU
IPC: A61K31/50
Filed: 1990-10-24
Abstract: ABSTRACT OF THE DISCLOSURE      Thiophene compounds of the formula:                               (I)   and (II) wherein R1 is hydrogen, nitro, amino, halogen or C1-4 alkyl; R2 is hydrogen, nitro, amino, halogen, C1-4 alkyl, C1-4 haloalkyl, acyl, C2-5 alkoxycarbonyl, C1-4 alkoxy-C1-4 alkyl, aryloxy-C1-4 alkyl, acyloxy-C1-4 alkyl, hydroxy-C1-4 alkyl, acyloxy-C2-5 alkanoyl, C1-4 alkoxy-C2-6 alkanoyl, hydroxy-C2-5 alkanoyl, aryloxy-C2-5 alkanoyl or C2-5 haloalkanoyl; R3 is hydrogen, Cl a alkyl, hydroxy-Cl 4 alkyl, C2-5 alkanoyloxy-C1-4 alkyl, aryl, aryl-C1-4 alkyl, heteroaryl, heteroaryl-C1-4 alkyl or aryl, aryl-C1-4 alkyl, heteroaryl or heteroaryl-C1-4 alkyl substituted by at least one substituent selected from the group consisting of halogen, hydroxy, amino, nitro, cyano, C1-4 alkyl, C1-4 alkoxy, C2-5 alkanoylamino, C1-4 haloalkyl, acyloxy, C2-5 alkoxycarbonyl and carboxyl on the aromatic ring; m is 0, 1 or 2; n is 1 or 2; the bond represented by  ---- is a single bond or a double bond.       Thiophene compounds (1) are useful as antianxiety drugs, hypnotics, antiepileptic drugs or nootropics.  Thiophene compounds (II) are useful as intermediates for said thiophene compounds (I).
Patent CA-2029866-A1 (CA)
Title: Device for detecting deconnections to pay-as-you-see programs received by a subscriber set in an interactive teledistribution network
Inventor: PHAM VAN CANG LUC
IPC: H04N7/173
Filed: 1990-03-16
Abstract: The device comprises, within each subscriber's terminal, a carrier wave generator which carries said wave to a distribution centre (1) as long as the television of the terminal is in operation, the absence of said wave being detected in the centre by a circuit (4) which thereupon assigns a phantom channel to the subscriber. The switching of the subscriber's television to an independent source of the centre can only be accomplished following the assignment of the phantom channel to the subscriber.
Patent CA-2031628-A1 (CA)
Title: Amorphous silicon sensor
Inventor: TRAN NANG T
IPC: H01L31/115
Filed: 1990-12-06
Abstract: AMORPHOUS SILICON SENSOR                           ABSTRACT A photosensor device includes doped and undoped hydrogenated amorphous silicon layers adjacent each other and sandwiched between a conductive layer on one side and a metal layer on the other side with the sensor having been annealed under a hydrogen atmosphere and exhibiting low  dark  currents.     The  photosensor  device  is particularly useful as an X-ray image sensing device with the addition of a luminescent layer having at least one X-ray phosphor.
Patent CA-2032967-A1 (CA)
Title: Oxidation catalyst with modified platinum structure
Inventor: CHATTHA MOHINDER S
IPC: B01J37/02
Filed: 1990-12-21
Abstract: Abstract of the Disclosure Sacrificial use of amino polymers to modify the crystal structure of platinum derived from chlorine compounds in a method to oxidize hydrocarbons, comprising: (a) preparing a polymer modifier by controllably reacting amine with epoxy resin to form a soluble adduct and adding to the adduct a solvent to form a homogeneous amino polymer solution; (b) coating a granular support material with platinum/chlorine compounds; and (c) mixing the coated support material with the polymer solution and heating the mixture to evaporate the solvent and to decompose and eliminate the polymer, leaving the coated granules with platinum in a morphologically changed condition devoid of amino polymer but having enhanced catalytic effectiveness for promoting oxidation of hydrocarbons.  The amine is of a primary or secondary amine, preferably the hydroxyethyl group.  The epoxy is a soluble resin comprising two or more epoxide groups per molecule,i.e., dihydric phenol or dihydric alcohol.  The polymer modifier is preferably a soluble amino polymer having a molecular weight of 500-50,000 and advantageously is 50% or more by weight of the solution.
Patent CA-2032992-A1 (CA)
Title: Dispersing agents, their use and solids coated therewith
Inventor: QUEDNAU PETER H
IPC: C09K23/00
Filed: 1990-12-21
Abstract: Title: Dispersing agents, their use and solids coated therewith.    The present invention relates to dispersing agents or their salts, comprising A   the reaction product of one or more polyisocyanates having an average functionality of from 2.0 to 5, with B    a mixture from B1 monohydroxyl compounds and B2 monohydroxy-, monocarboxylic acid compounds, or monoamino-, monocarboxylic acid compounds and C      a compound containing at least one basic ring nitrogen and an isocyanate-reactive group, in which of the isocyanate groups about 30-70 are reacted with B and about 30-70% with C, and the preparation of such dispersing agents.
Patent CA-2035476-A1 (CA)
Title: Process for the production of a lumpy meat emulsion product
Inventor: REIMANN JOSEF
IPC: A23K10/20
Filed: 1990-10-01
Abstract: Process for producing a lumpy meat emulsion product, in which the starting materials are processed to a meat emulsion at temperatures below 55°C, in which the meat emulsion is forced through a gap between the plates of the high speed emulsifier into a process tube and rapidly heated to 40 to 75°C, the proteins contained in the starting materials largely having an animal origin and having different coagulation behaviour characteristics as regards temperature and time.
Patent CA-2035621-A1 (CA)
Inventor: LE NOANE GEORGES
IPC: C03B37/02
Filed: 1991-02-04
Abstract: BREVET D'INVENTION "PROCEDES DE FABRICATION DE HAUTE ION DE CAPILLAIRES, D'EMBOUTS DE RACCORDEMENT ET DE DISPOSITIFS DE RACCORDEMENT POUR FIBRES OPTIQUES" La présente invention concerne un procédé de fabrication d'un tube capillaire de haute précision, présentant un trou intérieur, caractérisé en ce qu'il comporte les étapes suivantes : - préparation d'un barreau creux de silice présentant un trou central, au cours de laquelle le rapport du diamètre dudit trou central au diamètre extérieur dudit barreau creux est amené à la valeur désirée pour le rapport du diamètre dudit trou intérieur au diamètre extérieur dudit tube capillaire, - étirage homothétique du barreau creux de silice de façon à obtenir les valeurs désirées pour le diamètre du trou intérieur et le diamètre extérieur du tube capillaire. Application au domaine des techniques de raccordement pour fibres optiques multimodes et monomodes. Figure 2.
Patent CA-2036145-A1 (CA)
Title: Method and circuit for controlling the frequency of an electronic inverter
Inventor: KESSLER LELAND L
IPC: H03K5/156
Filed: 1991-02-12
Abstract: ABSTRACT OF THE DISCLOSURE             A method for modifiying the frequency of a clock signal includes the steps of producing a clock signal having voltage pulses which occur at a first frequency and producing a control signal having voltage pulses which occur at a lower frequency.  The frequency of the voltage pulses in the control signal is incremented in successive time intervals and the clock signal and control signal are combined such that one voltage pulse in the clock signal is deleted for each voltage pulse in the control signal. This may be ramped up or down depending upon the initial which may be ramped up or down depending upon the initial frequency of the control signal and the direction in which the frequency of the control signal is incremented.
Patent CA-2036370-A1 (CA)
Inventor: TRUJILLO EDUARDO E
IPC: A01N63/30
Filed: 1991-02-14
Abstract: BIOLOGICAL CONTROL OF KNAPWEED                         Abstract of the Disclosure A biologically pure culture of Pythrium rostraum is disclosed which produces zoosporangia which produce zoospores capable of killing knapweed. Also disclosed is a method for killing knapweed, comprising: (a) growing Pythium rostrstum which selectively kills knapweed on a carrier saturated with a liquid nutrient capable of supporting Pythium rostratum growth and the production of zoosporangia; and (b) applying the Pythium rostratum carrier to knapweed-infested land under moisture and temperature conditions sufficient to support Pythium rostratum growth and zoospore release by the zoosporangia, such that the zoospores are produced which are capable of killing knapweed.
Patent CA-2036497-A1 (CA)
Inventor: OHASHI YUTAKA
IPC: H01L33/42
Filed: 1991-02-18
Abstract: ABSTRACT This invention relates to an injection type thin film luminescence element having a high luminance and a high stability characterized in having two elec-trode layers at least one of which is transparent or translucent and having between these two electrode layers a luminescence function-manifesting layer comprising a laminated layer of a p-type or n-type inorganic semi-conductor thin film layer and an organic compound thin film layer.
Patent CA-2036906-A1 (CA)
Title: Coatings for stable sustained release preparations
Inventor: AKIYAMA YOHKO
IPC: A61K9/22
Filed: 1991-02-22
Abstract: Fatty acid esters of polyglycerols, such as stearic acid penta(tetra)glyceryl ester, behenic acid hexa(tetra)glyceryl ester, lauric acid mono(deca)glyceryl ester, oleic acid di(tri)glyceryl ester, linolic acid di(hepta)glyceryl ester, palmitic acid deca(deca)glyceryl ester, etc. are employed as coating agents for coating solid preparations such as tablets, pills, granules, fine granules, etc.      By coating with the coating agents, stable sustained release of active ingredients contained in the preparations is obtained, even after a long period of storage.