baber/WOPTO huggingface dataset:
Patent CA-2005252-A1 (CA)
Title: Isolation of full-length cdna clones and capped mrna
Inventor: SONENBERG NAHUM
IPC: C07K14/31
Filed: 1989-12-12
Abstract: A protein comprising at least a first functional site having the ability to bind the cap structure of mRNA and a second functional site having the ability to bind a solid support matrix in such a manner as to allow the first functional site to be immobilized and still remain functionally accessible to interact with the cap structure of mRNA. Also within the scope of the present invention is a method for generating a cDNA library mostly containing full-length cDNAs. The method comprises the incubation of a mixture comprising mRNA:cDNA hybrids with 1) a single strand RNA specific nuclease and 2) the above-mentioned protein. The resulting mixture is then passed through a column comprising a support matrix having the ability to bind the second functional site of the above-mentioned protein in order to selectively bind complete mRNA:cDNA hybrids. The mRNA:cDNA hybrids are then competitively eluted with a cap analog and full-length cDNA strands are separated and recovered. The present invention also includes a method for purifying capped mRNA using the above-mentioned protein. The process comprises the incubation of a mixture containing mRNA with the above-mentioned protein, passing the resulting mixture through a column comprising the support matrix having the ability to bind to the second functional site of the above-mentioned protein in order to selectively bind capped mRNAs, and competitively eluting the capped mRNAs with a cap analog.
Patent CA-2011019-A1 (CA)
Title: Cover for a utility box
Inventor: SUCHE KENNETH
IPC: E04H15/00
Filed: 1990-02-27
Abstract: COVER FOR A UTILITY BOX ABSTRACT OF THE DISCLOSURE          The unsightly utility box commonly provided in the yard of houses of a housing development is covered by an ornamental rock or other ornamental body molded from a plastics material.   The cover includes a cover portion extending over the whole of the utility box together with a base portion having a surrounding flange which can be fastened to the ground by screw fasteners.  The device is provided  simply  for  the purpose  of disguising the otherwise utilitarian appearance of the utility box.
Patent CA-2011235-A1 (CA)
Inventor: KU SAN-MEI
IPC: H01L21/768
Filed: 1990-03-01
Abstract: METHOD OF FORMING CONTACTS TO A               SEMICONDUCTOR DEVICE            Abstract of the Invention A method of forming semiconductor device contacts includes the steps of: providing a semiconductor substrate having at least two features thereon whereat it is desired to make electrical connections; forming a layer of etch stop material having a first etch characteristic over each of the features; forming a layer of dielectric material having a second etch characteristic  over each of the features; simultaneously etching at least two vias through the  layer  of  dielectric  material  using  an  etchant selective to the layer of dielectric material so as to substantially stop on the layer of etch stop material, the at  least two vias  including a via over  each of the features; and extending the vias through the layer of etch stop material so as to expose the features for subsequent electrical connections.
Patent CA-2013360-A1 (CA)
Title: Openable roof apparatus
IPC: E04H3/10
Filed: 1990-03-29
Abstract: ABSTRACT OF THE DISCLOSURE  In an openable roof apparatus for a space, a first and a second movable roof structures have their respective both ends which are supported respectively by a pair of stationary support structures for movement therealong.  A pair of guide arraignments are arranged respectively on the pair of stationary support structures.  The first and second movable roof structures are movable toward and away from each other along the guide arrangements.  The first movable roof structure includes a plurality of movable roof units having their respective axes which extend perpendicularly to the guide arrangements.  The first and second movable roof structures are movable between a closed position where the movable roof units of the first movable roof structure cooperate with the second movable roof structure to close the space, and an open position where the movable roof units of the first movable roof structure are moved away from the second movable roof structure to open the space.  In the open position, the movable roof units of the first movable roof structure are overlapped with each other.
Patent CA-2017073-A1 (CA)
Title: Fire suppression systems for vehicles
Inventor: COURT ANTHONY J T
IPC: A62C3/07
Filed: 1990-05-17
Abstract: ABSTRACT OF THE DISCLOSURE               Fire Suppression Systems for Vehicles A fire and smoke suppression system suitable for passenger aircraft capable of 'surviving' a crash consists of a plurality of individually and independently operable units (17) each including its own self contained supply of fire/smoke suppressant, such as water, as well as its own self-contained supply of a pressurizing means, such as a CO2 bottle (23) which, on activation,  expels the suppressant under pressure. Each unit (17) is an integrated assembly including a spray head (18) terminating in a nozzle (20) in flow communication with a flexible bag tank (25) containing water and accommodated in a rigid outer shell (24).
Patent CA-2018007-A1 (CA)
Title: Treating skin and lesions
Inventor: GREINER RICHARD W
IPC: A61L15/44
Filed: 1990-05-31
Abstract: ABSTRACT OF THE DISCLOSURE Disclosed  is  a  method  of  treating  a  skin  lesion comprising applying to the lesion a dry bandage comprising a gas- and moisture-permeable, flexible, thermoplastic film impregnated with a pharmaceutical.
Patent CA-2018336-A1 (CA)
Inventor: FREUDENBERG TILLMAN
IPC: F16F13/18
Filed: 1990-06-05
Abstract: A rubber mounting with hydraulic damping in which a liquid-filled operating chamber (1) in at least a first partial region is bounded by a plate (3), supported on a spring (2), of material which can be magnetised. The plate (3) can be moved to and fro in the direction of the operating chamber (1) with the aid of a magnet system, as a function of predetermined parameters. The transmission of acoustically acting vibrations via the rubber mounting can in this way be suppressed. 
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Patent CA-2019389-A1 (CA)
Title: Methanol-based chlorine dioxide process
Inventor: FREDETTE MAURICE C J
IPC: C01B11/02
Filed: 1990-06-20
Abstract: ABSTRACT OF THE DISCLOSURE Chlorine dioxide is produced at high efficiency by reduction of sodium chlorate with methanol in an aqueous acid reaction medium at a total acid normality below 7 with the reaction medium being at its boiling point while a subatmospheric pressure is applied thereto and having a chlorate concentration of at least about 2.0 molar.   By employing such conditions, the tendency is eliminated for the reaction to be subject to white-outs in the absence of added chloride ion.  In this way, the chlorine content of product aqueous  chlorine dioxide solution arising from this source is eliminated.
Patent CA-2020966-A1 (CA)
Title: Polymeric salt delivery systems
Inventor: PARTAIN EMMETT M III
IPC: A61K9/70
Filed: 1990-07-11
Abstract: POLYMERIC SALT PHARMACEUTICAL        DELIVERY SYSTEMS          ABSTRACT OF THE DISCLOSURE       A biocompatible, film-forming delivery system for the delivery of pharmaceutical or therapeutic actives to a desired topical site of a subject, the system including:             an active salt compound, wherein the active salt com-pound is at least a partial salt of (1) a carboxylic acid moiety-containing, biocompatible, film-forming polymer with (2) at least one active selected from the group con-sisting of pharmaceutical actives, therapeutic actives and a combina-tion thereof, wherein the at least one active is capable of complexing with at least one carboxylic acid moiety of the polymer to form the active salt compound, and wherein the active salt compound forms an active salt compound film on the topical site and the active salt compound disas-sociates into the polymer and the at least one active while the deliv-ery system is in contact with the topical site such that the polymer remains thereon as a polymer film and the at least one active is deliv-ered to the topical site in an absorbable form.
Patent CA-2021026-A1 (CA)
Inventor: TAKAGISI YOSIKAZU
IPC: G11B7/24
Filed: 1990-07-12
Abstract: An optical information recording medium comprising a light transmitting substrate having a spiral pregroove formed on its surface, a light absorptive layer of a coloring matter formed on the substrate directly or with other layer interposed therebetween, and a light reflective layer made of a metal film formed on the light absorptive layer directly or with other layer interposed therebetween, wherein .DELTA.S ? 0.3 wherein .DELTA.S is the optical phase difference represented by .DELTA.S = 2dsub{nsub - nabs(1 -dabs/dsub)}/.lambda. wherein dsub is the depth of the layer boundary on the substrate side of the light absorptive layer at the portion corresponding to the pregroove, dabs is the depth of the layer boundary on the light absorptive layer side of the light reflective layer at the portion corresponding to the pregroove, nsub is the real part of the complex refractive index of the substrate and any layer present on the substrate side of the light absorptive layer, nabs is the real part of the complex refractive index of the light absorptive layer, and .lambda. is the wavelength of a laser beam.
Patent CA-2026570-A1 (CA)
Inventor: EVEN-CHEN ZEEV
IPC: C12P21/00
Filed: 1990-02-07
Abstract: Processes are provided for producing purified, hepatitis B surface antigen particles in mammalian cells which comprise culturing mammalian cells which produce the particles in a culture medium supplemented with a serum free of high molecular weight contaminant proteins and recovering the purified, hepatitis B surface antigen particles. Removal of molecules having a molecular weight greater than about 3 x 10<5> daltons by prefractionation, for example, allows cells to be grown in culture media containing high levels of fetal calf serum, removes high molecular weight contaminant proteins which may be inhibitory to cell growth and simplifies purification of HBsAg since high molecular weight contaminant proteins are the major contaminants removed by purification processes.
Patent CA-2027923-A1 (CA)
Title: Phosphorus compounds
Inventor: BUDZELAAR PETRUS H M
IPC: C07F15/00
Filed: 1990-10-18
Abstract: A B S T R A C T                PHOSPHORUS COMPOUNDS    A process for the preparation of a phosphide of the chemical structure RPPyLi wherein R is alkyl, substituted or unsubstituted aryl, 2- or 4-pyridyl, P is phosphorus, Py is 2- or 4-pyridyl and Li is lithium, wherein a)   in the preparation of a compound CH3PPyLi:      either methyl di-2-, or 4-pyridylphosphine CH3P(Py)2 is reacted with LiH, Li(CH3), LiAr, wherein Ar is substituted or unsubstituted aryl, or 2-pyridyl lithium or 4-pyridyllithium, or tri-2- or 4-pyridylphosphine P(Py)3 is reacted with Li(CH3); b)   in the preparation of a compound RPPyLi wherein R is an alkyl higher than methyl: methyl di-2- or 4-pyridylphosphine CH3P(Py)2 or ArP(Py)2 wherein Ar is substituted or unsubstituted aryl or tri-2- or 4-pyridylphosphine is reacted with an alkyl lithium compound wherein alkyl is higher than methyl; c)   in the preparation of a compound RPPyLi wherein R is substituted or unsubstituted aryl: either ArP(Py)2 wherein Ar is substituted or unsubstituted aryl and Py is 2- or 4-pyridyl is reacted with LiH, 2-pyridyl lithium or 4-pyridyl lithium, their alkyl-substituted derivatives or LiAr wherein Ar is a substituted or unsubstituted aryl group or tri-2- or 4-pyridylphosphine or ArP(Py)2 wherein Ar is substituted or unsubstituted aryl is reacted with LiAr wherein Ar is substituted or unsubstituted aryl; d)   in the preparation of a compound RPPyLi wherein R is 2- or 4-pyridyl: tri-2- or 4-pyridyl phosphine is reacted with LiH or 2- or 4-pyridyl lithium.
Patent CA-2031224-A1 (CA)
Title: Heat-curing reactive powders based on polyurethanes
Inventor: GROGLER GERHARD
IPC: C08G18/00
Filed: 1990-11-30
Abstract: Mo3495 LeA 27,353 HEAT-CURING REACTIVE POWDERS BASED ON POLYURETHANES             ABSTRACT OF THE DISCLOSURE The present invention relates to the preparation of powdered heat-curable reaction mixtures in which melt suspensions of (a) solid polyisocyanates having melting points above about 60°C, (b) molten high molecular weight isocyanate-reactive compounds having molecular weights of from 400 to 10,000 that have melting or softening points of 50°C to 150°C, and (c) optionally, solid or liquid low molecular weight chain-extending or crosslinking compounds having molecular weights of from 62 to 399, are added to an inert solvent containing an emulsifier, thereby forming powdered heat-curable reaction mixtures in which components (a), (b), and (c) remain in uncrosslinked form.  The invention further relates to the use of the heat-curing reaction mixtures for the preparation of high-quality polyurethane polyurea plastics.
Patent CA-2033490-A1 (CA)
Title: Push-pull cascode logic
Inventor: GIESEKE BRUCE A
IPC: H03K19/0948
Filed: 1991-01-02
Abstract: PUSH-PULL CASCODE LOGIC                 ABSTRACT OF THE INVENTION      A  cascode  logic  circuit  provides  a  pair  of differential output nodes that are pulled up by a pair of cross-coupled P-channel output transistors.   The output nodes  are  connected  to  outputs  of   an  N-channel combinatorial network that receives a differential input and functions to connect one of the output nodes to a positive supply and the other to ground, depending upon the differential input, thus providing a push-pull effect.  The output nodes may be connected to the differential output of the combinatorial network by source-drain paths of separate N-channel transistors, with the gates of these transistors connected to the positive supply to capacitively isolate the  output  nodes  from  the  combinatorial  network; alternatively,  the  gates  of  these  transistors  may  be clocked.  A fully static latch is provided by adding cross-coupled N-channel transistors connecting the output nodes to ground,  so the low side of the output is held down instead of being allowed to float.  The channel types of the transistors may be reversed in another embodiment; the pull-down transistors of the differential amplifier may be N-channel and the logic and latching transistors P-channel.            H:\DIGK\049\PA\01.INT
Patent CA-2034580-A1 (CA)
Title: Implantable catheter with electrical pulse nerve stimulators and drug d elivery system
Inventor: XAVIER RAVI
IPC: A61M5/00
Filed: 1991-01-18
Abstract: A catheter intended to be implanted in the epidural space of a patient for relief of pain,  either temporarily or permanently,  includes four circumferential ring electrodes connected to terminals by fine wires embedded in the side wall of the catheter for attachment to a conventional electric pulse generator and a hollow elongated body having a lumen therethrough with an injection portal at the proximal end and an aperture at the distal end for continuously administering a pain-relieving agent in a liquid form.  The agent may be a narcotic or anesthesia.    In the permanently  implantable embodiment,  the  catheter  includes  an  implantable  pulse generator and an implantable drug reservoir, both of which can be repeatedly programmed while implanted.   Methods for treating  pain  using  the  catheter  include  electrical stimulation, the use of narcotics, or anesthesia, which can be administered in any order, or simultaneously as empirically determined to provide the best pain relief for each patient.
Patent CA-2035137-A1 (CA)
Title: Apparatus for extracting water from sludges
Inventor: SKOCIC ANTE
IPC: B01D25/12
Filed: 1991-01-29
Abstract: Abstract A new apparatus for extracting water from product or sewage sludge on the spot is provided. It is charac-terised by a frame matched to the dimensions of a low loader and having lifting supports which can be pivoted in and out and which have multi-step vertical adjus-tability. Filter presses of substantially higher capacity than those on known apparatuses employing a semitrailer can be used.
Patent CA-2035170-A1 (CA)
Title: Procede de fabrication d'une cathode impregnee et cathode obtenue par ce procede
Inventor: SHROFF ARVIND
IPC: B22F3/26
Filed: 1991-01-29
Abstract: L'invention concerne un procédé pour la fabrication d'une cathode imprégnée pour tube électronique, et la cathode imprégnée ainsi réalisée. La méthode consiste à mélanger (b) une poudre (Y) contenant l'élément émissif (généralement des aluminates de baryum et de calcium) avec la poudre (W) d'au mains un métal réfractaire (généralement du tungstène, éventuellement mélangé avec un métal de la mine de platine), puis pressage (c) de ce mélange pour former une pastille (1) qui est ensuite frittée (d) sous atmosphère d'hydrogène à haute température (2 000.degree.C environ). Dans l'art antérieur, une poudre d'au moins un métal réfractaire, était pressée et frittée et ensuite imprégnée, usinée, nettoyée etc. Le procédé selon l'invention permet d'économiser donc de nombreuses étapes dans la fabrication d'une cathode imprégnée par rapport à l'art antérieur.
Patent CA-2035622-A1 (CA)
Title: Precatalyzed catalyst compositions, process for preparing epoxy resins, curable compositions, articles resulting from curing the resultant compositions
Inventor: PHAM HA Q
IPC: C08G59/14
Filed: 1991-02-04
Abstract: ABSTRACT          The process of reacting an epoxy resin with a reactive hydrogen-containing compound or a carboxylic acid anhydride in the presence of a phosphonium catalyst is improved by employing a phosphonium compound having an amino substituent on the cation portion of the phosphonium compound as the catalyst.  The invention also concerns precatalyzed epoxy resin compositions, curable compositions and cured compositions.   37,788-F
Patent CA-2037451-A1 (CA)
Title: Patch antenna with polarization uniformity control
Inventor: WONG MON N
IPC: H01Q13/08
Filed: 1991-03-01
Abstract: PATCH ANTENNA WITH POLARIZATION UNIFORMITY CONTROL      ABSTRACT OF THE DISCLOSURE          A  patch  antenna  is  formed  of  one  or  more  flat disc shaped radiators disposed parallel to and spaced apart  from  a  common  ground-plane element.   At  each radiator,  there  is a  feed  assembly  of  two  feeds positioned to one side of a center of the radiator in space quadrature and excited in phase quadrature for generating  circularly  polarized  radiation  from  the radiator. Each of the feeds, in a preferred embodiment of the invention, is formed as a post extending through an aperture in the ground-plane element partway to the radiator for capacitive coupling with the radiator.  At each radiator,  a reactance element on the form of a capacitive block extends from the ground-plane element partway to the radiator at a location diametrically opposite the feed assembly.   Capacitive reactance of the reactance element  is approximately one order of magnitude less than the sum of the capacitive reactance of the two feeds at each radiator to reduce mutual coupling  between  the  feeds  of  each  radiator  to counteract  any  elliptical   polarization  to  produce accurately a circular polarization.
Patent CA-2038995-A1 (CA)
Title: Autothermal steam reforming process
Inventor: LEBLANC JOSEPH R
IPC: C01B3/38
Filed: 1991-03-25
Abstract: Ammonia synthesis gas is produced by reaction of steam, an oxidant, and a major portion of fresh hydrocarbon feed in an exothermic catalytic reforming zone to a first reformed gas having very low methane content. The balance of the fresh feed is reacted with steam in an endothermic catalytic reforming zone to a second reformed gas having a low methane content. The first and second reformed gases are combined and passed in indirect heat exchange with reactants in the endothermic reforming zone to provide all of the heat required therein and are then recovered as raw ammonia synthesis gas.
Patent CA-2040449-A1 (CA)
Title: Chewing gum compositions containing xylitol and sucrose and methods for preparing same
Inventor: BILKA KENNETH P
IPC: A23G4/10
Filed: 1991-04-15
Abstract: ABSTRACT OF THE DISCLOSURE                 CHEWING GUM COMPOSITIONS CONTAINING XYLITOL AND SUCROSE AND METHODS FOR PREPARING SAME    The present invention pertains to a sweetened chewing gum composition having enhanced,  clean tasting flavor which  comprises  (a)  a  gum  base,  (b)  a  bulk sweetening agent comprising xylitol and sucrose, wherein xylitol is present in an amount from about 10% to about 15%,  by weight of the chewing gum composition,  (c)  a binding agent, and (d)  a flavoring agent.   The present invention also  pertains  to methods  for preparing  the sweetened chewing gum compositions.
Patent CA-2042979-A1 (CA)
Inventor: SMITH MARTIN A
IPC: C11D3/37
Filed: 1991-05-21
Abstract: A fabric treatment composition comprising an aqueous base, one or more, fabric-softening materials and an emulsion component, said composition having a structure of lamellar droplets of the fabric-softening material in combination with an emulsion, said composition also comprising a deflocculating polymer comprising a hydrophilic backbone and one or more hydrophobic side chains.   The deflocculating polymer allows the incorporation of greater amounts of softening materials and/or emulsion components that would otherwise be compatible with the need for a stable, easily dispersible product of acceptable viscosity.
Patent CA-2044492-A1 (CA)
Inventor: CERF MARTINE
IPC: C08F230/02
Filed: 1991-06-13
Abstract: Composes acryliques et méthacryliques choisis parmi ceux de formule: ceux de formule: et ceux de formule: R1 est choisi parmi l'atome d'hydrogène et le radical méthyle, A est choisi parmi les radicaux (CH2)n pour lesquels X et Y représentent le soufre d'oxygène, n est un nombre entier de 2 à 12, et le radical -(CH2CH2O)d-CH2CH2-, d étant un nombre entier entre 2 et 12, m est un nombre entier allant de 1 à 3, et R représente un alkyle ou -(CH2)pS alkyl, Z est choisi parmi l'atome d'hydrogène, les radicaux R2QH, R2 étant un radical alkyle ayant de 2 à 12 atomes de carbone et Q étant choisi parmi les atomes d'oxygène et de soufre, et les atomes des métaux des groupes IA, IIA, IIIA, IB, IIB, VIB, VIIB et VIII de la Classification Périodique, avec la condition que Z est choisi parmi l'atome d'hydrogène et les radicuax R2OH lorsque m = 1 et que m est la valence de Z lorsque Z est un métal. Procédé de préparation de ces composés. Ces composes sont intéressants en ce qu'ils contiennent du phosphore et du soufre.
Patent CA-2047762-A1 (CA)
Inventor: GOYAL SHRI K
IPC: B01D37/00
Filed: 1991-07-19
Abstract: A method and a system for separating solids from a solids-containing liquid feed is disclosed wherein ultrasonic energy is applied to a fouled separation element in situ in the separator unit associated with the element while the element is immersed in a liquid to effect removal therefrom of solids fouling the element and wherein the separation element is backflushed with a backflush liquid.
Patent CA-2048608-A1 (CA)
Inventor: JULIAN RANDALL K
IPC: B65D47/08
Filed: 1990-05-22
Abstract: A dispensing closure having a base ring with means for attachment to a container which permits rotation of the ring without axial movement. A lid is connected to the base ring by a hinge which allows the lid to be swung from a closed position blocking access to a container opening to an open dispensing position. A cam element on the lid effects initial movement of the lid towards an open position when the base ring is rotated. The lid cam element cooperates with a cam surface on the container. A fitment can also be used to attach the closure to a flat can top or to other container configurations. When a fitment is used, the cam surface will be on the fitment rather than the container.