baber/WOPTO huggingface dataset:
Patent CA-2040974-A1 (CA)
Title: Process for producing vinyl polymer or vinylidene polymer
Inventor: FUJITA TAKANORI
IPC: C08F18/00
Filed: 1991-04-23
Abstract: Abstract The present invention is directed to an improved process for producing a vinyl or vinylidene polymer comprising polymerizing a monomer having a vinyl or vinylidene group in the presence of (a)  a radical polymerization initiator, (b)  an organic phosphorus compound of the formula:     (I)   wherein R1, R2, and R3 independently represent a hydrogen atom, a chlorine atom, a bromine atom, an alkyl, an aralkyl, or an aryl, (c)  an amine hydrohalide or a quaternary ammonium halide, and (d)  a copper-containing compound, which can be carried out rapidly and can give the vinyl or vinylidene polymer having excellent mechanical strength without coloring.  The polymers obtained by the process of the present invention are suitable for use in the production of optical parts, i.e. conventional lenses, Fresnel's lens, optical recording media, prisms, mirrors and the like.
Patent CA-2044534-A1 (CA)
IPC: B22D11/11
Filed: 1991-06-13
Abstract: Intermediate Pressure Electron Beam Furnace Abstract In the representative embodiment described in the specification, an electron beam furnace (10) has an evacuation system (25) which maintains the interior of the furnace at a pressure in the range from about 50 microns Hg to 300 microns Hg.  The relatively high pressure reduces degassing time from a cold start, suppresses volatilization of constituents of metal being refined, and causes volatilized metal to con-dense in powder form on a condensing screen.  A vibrator (27) assists in removing the powder from a condensing screen (26).  Each electron beam gun (17,19,23) has a series of compartments which are individually evacuated to maintain the pressure in the compartment containing the cathode at a level less than about 1 micron Hg.  (Fig. 1)
Patent CA-2044854-A1 (CA)
Title: Method for preventing or treating urinary incontinence
Inventor: CHEN HONG-I
IPC: C07D451/04
Filed: 1991-06-18
Abstract: Abstract METHOD FOR PREVENTING OR TREATING      URINARY INCONTINENCE        A method is provided for preventing or treating urinary incontinence employing a 5-hydroxy-tryptamine-3 (5-HT3) receptor antagonist.
Patent CA-2046103-A1 (CA)
Inventor: HUNSZINGER PETER A
IPC: G01N1/10
Filed: 1991-07-03
Abstract: A flow sampler device which can be employed in a catalytic reactor system comprises a sample receiver, and an inlet and outlet valve which are each in fluid communication with the receiver.  Each of the valves includes  a valve stem which  is  rotatable about a longitudinal  axis  thereof  so  as  to  actuate  the respective valve and has a collar element secured thereto.   This collar element has a first end and a second end and comprises a wall means which defines a longitudinal  passageway  therethrough.    The  collar element also includes a locking slot which is defined therein and which includes a first portion extending from the first end of the element and a second portion which  is  substantially perpendicular  to  the  first portion.  In a preferred embodiment, the collar element is cylindrical and the locking slot is substantially L-shaped.   The collar element effectively prevents a wrench which operates the valve from being removed from the valve stem when the valve is in a open position. Thus, because only one valve is open at any one time, the reactor is not allowed to vent through the sampling device.
Patent CA-2046802-A1 (CA)
Title: Compositions containing protease produced by vibrio and method of use in debridement and wound healing
Inventor: FORTNEY DONALD Z
IPC: A61P17/02
Filed: 1991-07-11
Abstract: Compositions and methods of use are provided for debriding and wound healing applications. The compositions contain certain proteases produced by microorganisms of the genus Vibrio.
Patent CA-2049877-A1 (CA)
Title: Chair mechanism
Inventor: LAPOINTE LARRY P
IPC: A47C1/034
Filed: 1991-08-26
Abstract: A "two-way" recliner mechanism for use in articles of furniture is disclosed. The two way recliner mechanism provides operative first and second linkages tor tilting the seat assembly relative to a stationary chair frame and for extending and retracting a leg rest assembly, respectively. The first linkage mechanism is a toggle-lock mechanism operable for holding the seat assembly in the upright position and the second linkage is an over-center toggle mechanism operable for actuating the leg rest assembly. The first and second linkages are activited by a short-stroke actuator handle concealed in the upholslery of the chair, sofa or loveseat which may be easily operated by the seat occupant.
Patent CA-2051808-A1 (CA)
Inventor: SCHRYVERS ANTHONY B
IPC: A61K39/095
Filed: 1990-04-26
Abstract: L'invention décrit des procédés, qui servent à isoler et à purifier des protéines réceptrices de transferrine et de lactoferrine à partir de bactéries pathogènes par chromatographie par affinité, et qui permettent la préparation d'antigènes de vaccin contenant les protéines réceptrices de transferrine et de lactoferrine purifiées.
Patent CA-2051845-A1 (CA)
IPC: E21B47/00
Filed: 1991-09-19
Abstract: In a liquid well pumping system which is provided with a downtime between pumpoff cycles, the method of determining the maximum downtime includes running a plurality of tests to determine the relationship between runtime and downtime and determining when the relationship becomes non-linear for at least two consecutive tests. The downtime is selected adjacent the last linear relationship between runtime and downtime for providing a downtime which allows adequate fluid buildup in the well, but not so long a period as to loose well production.
Patent CA-2052410-A1 (CA)
Title: Compression resistant silicone rubber composition
Inventor: NAKAMURA AKITO
IPC: C08L83/04
Filed: 1991-09-27
Abstract: COMPRESSION RESISTANT SILICONE RUBBER COMPOSITION             Abstract of the Disclosure A compression-resistant silicone rubber composition, useful in roll covering without need of a post-cure, is produced by combining a polydiorganosiloxane having at least 3 alkenyl groups on the polymer chain, a polydiorganosiloxane crosslinker having hydrogen only on the terminal groups, inorganic filler, and platinum-type catalyst.
Patent CA-2053818-A1 (CA)
Title: Sound Absorptive File Cabinet Door
Inventor: EDWARDS JOHN
IPC: A47B88/00
Filed: 1991-10-21
Abstract: A file cabinet is disclosed which has a door with high sound absorption properties.  The door has metal front and rear panels and an intermediate layer of sound absorbing material sandwiched therebetween.  An array of openings are cut through both the front and rear panel.          Sound impinging on the front panel enters the cabinet via the door and is attenuated in the door and cabinet.          Preferably, paper files are stored within the file cabinet with their peripheral edge surfaces disposed towards the rear panel to assist in attenuating sound within the cabinet.
Patent CA-2055479-A1 (CA)
Title: Copolymerizates formed by polymerization of monomers containing polyalkylene oxide blocks, their preparation and use
Inventor: BOECKH DIETER
IPC: C08F220/12
Filed: 1990-05-04
Abstract: - 28 -          O.Z. 0050/40800 Abstract of the Disclosure:  Copolymers useful in amounts of from 0.1 to 15% by weight as grayness inhibiting and primary detergency boosting additives  in pulverulent liquid detergents have K values of from 10 to 80 (deter-mined by Fikentscher in dimethylformamide at 25°C with a polymer concentration of 2% by weight) and are obtainable by copolymerizing monomer mixtures of (a)  from 10 to 60% by weight of water-soluble monomers obtainable  from  (A)  water-soluble  polyalkylene glycols    or    (B)    water-soluble   alkoxylated C1-C25-alcohols, for example by esterification with C3-C6-carboxylic acids, by vinylation with acetylene or by allylation with alkenyl ethers, or by reaction with ammonia to give the corresponding end group aminated compounds (A) or (B) and by reaction with monoethylenically unsaturated C3-C6-carboxylic acids to form the amides, and (b)  from 40 to 90% by weight of vinyl esters of satura-ted monocarboxylic acids and/or alkyl esters of monoethylenically unsaturated C3-C6-monocarboxylic acids at up to 160°C in inert solvents in the presence of from 0.1 to 5% by weight, based on the monomers, of polymeri-zation initiators, and, if the amount of initiator is less than 2% by weight, additionallly in the presence of polymerization regulators.
Patent CA-2057082-A1 (CA)
Title: Reverse direction pyrolysis processing
Inventor: LOBODA MARK J
IPC: B05D7/24
Filed: 1991-12-05
Abstract: REVERSE DIRECTION PYROLYSIS PROCESSING     ABSTRACT     The present invention relates to a method of forming a homogeneous ceramic coating on a substrate.  The method comprises depositing a preceramic coating on a substrate and then heating the substrate while directing a stream of cooling gas at the surface of the preceramic coating such that a temperature gradient is developed in the coating.  This temperature gradient is created in such a way that the preceramic material near the substrate is converted to its ceramic form while the preceramic material near the surface of the coating is deterred from conversion.  The temperature gradient is then decreased over time such that all of the preceramic material ceramifies from the substrate outward to form a homogeneous coating on the substrate.
Patent CA-2057213-A1 (CA)
Title: Trophoblast interferon
Inventor: EBBESEN PETER
IPC: A61K39/395
Filed: 1991-12-06
Abstract: ABSTRACT           Novel  interferon proteins,  produced by human trophoblasts or other means such as recombinant techniques, are provided.   These novel  interferon have properties indicating that they are different from known interferon, and are useful in prophylactic or therapeutic treatment of humans or other warm blooded animals, e.g. in prevention of virus transmission from infected mother to fetus during pregnancy and during labour.
Patent CA-2057364-A1 (CA)
Title: Process of and water treatment reactor using a granular bed for filtration purposes of filtration related to biological purification of water
Inventor: CAPDEVILLE BERNARD
IPC: B01D24/22
Filed: 1991-12-10
Abstract: Process for water treatment employing a granular bed (3) consisting of granular support materials of lower density than that of the water to be treated. According to this process each washing cycle consists in interrupting the draw-off of the treated water and stopping the feed of water to be treated so that the granular bed (3) floats in a given volume of water VL, in introducing washing air into the reactor with a view to ensuring stirring of the abovementioned floating bed, in interrupting the entry of air with a view to permitting a separation of the granular materials and of the sludge by density difference, with sedimentation of the said sludge and flotation of the said materials, and in removing the sludge at the base of the reactor and the water contained in it with a view to emptying the granular bed (3). 
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Patent CA-2059162-A1 (CA)
Title: Silicone foams of improved fire resistance
Inventor: DESCAMPS PIERRE
IPC: B29C35/08
Filed: 1992-01-10
Abstract: Abstract of the Disclosure The specification describes and claims a method of making silicone foam compositions comprising the steps of introducing into a moulding cavity a quantity of foamable silicone compositions which is curable at room, or slightly elevated, temperature and bring about curing in the cavity to produce a cured silicone foam.  The moulding cavity is closed prior to foaming thereby restricting expansion of the foam.  The volume of the closed moulding cavity is a minimum 10% less than that which would be occupied by the composition if it foamed and cured at room temperature without restriction.  Lower density foams formed by the above procedure may be converted into rigid elastomeric low density materials by a heat or microwave post cure.  For a given composition and foam density the fire resis-tance of a foam produced by a method according to the invention is greater than a foam which is allowed to foam freely.
Patent CA-2060673-A1 (CA)
Title: Stray current neutralizing method and device
Inventor: MONTREUIL MICHEL
IPC: H02H3/14
Filed: 1992-02-05
Abstract: A method and device neutralize alternating stray current flowing through a ground return circuit in the proximity of  an animal susceptible to be affected by this  current.   The alternating stray current flowing through the ground return circuit is sensed and a  signal  representative of that  stray current is produced.   In response to this current representative  signal,  an alternating compensatory current is generated and injected in the ground return circuit.  The alternating compensatory current has an amplitude equal to the amplitude of the sensed stray current and is out of phase with respect to that stray current  by  an  angle  of  180°.    Therefore,  the alternating compensatory current and the alternating stray current add in the ground return circuit and substantially cancel  each other whereby the stray current can no longer affect the animal.  A plurality of different configurations for the connection of the stray current neutralizing device to the ground return circuit  are  described,  each  configuration  being adapted to a specific application.
Patent CA-2060876-A1 (CA)
Title: Recirculation seal for a gas turbine exhaust diffuser
Inventor: DONLAN JOHN P
IPC: F02C7/28
Filed: 1992-02-07
Abstract: 56,411 ABSTRACT A seal is provided to prevent the recirculation of hot gas through an annular cavity formed between the outer flow liner of a diffuser and an exhaust cylinder in the exhaust section of a gas turbine.  The seal is formed from a high  temperature  cloth,  such  as  fiber  glass,  which  is sandwiched between two layers of a fine wire mesh.  The seal is comprised of a plurality of arcuate segments.  Although the cloth has a rectangular shape when in its undeformed state, it takes an arcuate shape as a result of being crimped within inner and outer arcuate channels.  The seal is retained by sliding the channels into circumferential grooves in the exhaust cylinder and outer flow liner.  An expansion loop is formed in the seal to allow for differential expansion between the exhaust cylinder and the outer liner.
Patent CA-2061541-A1 (CA)
Title: Concrete and its prestressing process and container manufactured with this concrete
Inventor: GERARD MICHEL
IPC: E04C5/07
Filed: 1992-02-19
Abstract: DESCRIPTIVE ABSTRACT            The concrete according to the invention has durability and mechanical strength characteristics equivalent to prestressed concretes.            It comprises fibres (20) embedded in a conventional concrete, said fibres either being shape memory metal alloy fibres, or thenmoretract-able fibres.  A subsequent heat treatment makes it possible for these fibres to assume a shape making it possible to impose compressive stresses throughout the volume of the cast or fluid concrete.            Application to the manufacture of radioactive waste containers.            (single drawing)
Patent CA-2061749-A1 (CA)
Title: Densification of lignocellulosic material
Inventor: FRANICH ROBERT
IPC: B27K3/15
Filed: 1992-02-24
Abstract: The invention comprises a method of densifying lignacellulosic material such as wood. The wood is impregnated with a maltodextri solution under vacuum and/or pressure and the maltodextrin is thin cross linked to substantially insolubilise the maltodextrin. A wood-polymer composite is formed. Suitable cross linking agents include compounds having at least one hydroxyl group. Maltodextrins having a dextrose equivalent in the range 15 to 30 are preferred. The resulting composite material has improved appearance, hardness, impact resistance, strength and water repellency.
Patent CA-2062607-A1 (CA)
Title: Cuvette for use in making a measurement of a blood parameter and assembly utilizing the same
Inventor: MULLIN PAUL J
IPC: G01N33/49
Filed: 1992-03-10
Abstract: A cuvette comprising a housing having a passage therethrough and being adapted to receive blood. The housing has a wall with an outer face. An optical window leads from the outer face to the passage and the optical window is transmissive to an optical signal so that a parameter of blood in the passage can be measured. A magnet is carried by the wall and spaced from the optical window for use in providing information about the cuvette. The cuvette is releasably attachable to an optical head. The optical head includes a plurality of Hall effect transducers which respond to the position of the magnet on the housing so that the position of the magnet can be used to provide information about the cuvette.
Patent CA-2064852-A1 (CA)
Title: Shaft rotation speed governor of an internal combustion engine
Inventor: TUNIK VALERY S
IPC: F02D1/10
Filed: 1991-06-20
Abstract: ABSTRACT               The governor comprises a leverage mechanism (1) connecting a centrifugal sensor (2) detecting changes in the engine shaft rotation speed to a metering ele-ment (3) of a fuel injection pump. The leverage me-chanism (1) is formed by a two-arm lever (4), a one--arm lever (5) and a control member (6). The first arm (7) of the two-arm lever (4) is connected to an output link (8) of the centrifugal sensor (2). The second arm (9) of the two-arm lever (4) is connected to an arm (10) of the one-arm lever (5) by a resi-lient member (11). The arm (10) of the one-arm lever (5) is connected to the metering element (3) of the fuel injection pump by a rod (12). The arm (10) of the one-arm lever (5) carries a support roller (13), and the two-arm lever (4) is provided with a canti-lever guide (14), the shaped surface (15) of which contacts the support roller (13) of the one-arm lever (5). The control member (6) is a two-arm le-ver (16) capable of turning about its geometric axis (O1-O1). The first arm (17) of the two-arm lever (16) is connected by a kinematic link (18) to a shaft (19) of the one-arm lever (5). The second arm (20) of the two-arm lever (16) is connected to a shaft (21) of the two-arm lever (4) cooperating with the output link (8) of the centrifugal sensor (2).
Patent CA-2065134-A1 (CA)
Title: Transdermal composition
Inventor: SZABO ANNA Z
IPC: A61K31/13
Filed: 1992-04-03
Abstract: A B S T R A C T          The  invention  concerns an anhydrous transdermal preparation comprising in a 20-100 % lyotropic liquid crystalline arrange-ment 5-15    w.%   of  optically active or racemic N-methyl-N--(phenyl-2-propyl)-2-propinylamine or N-methyl-(1-(4-fluoro-phenyl)-2-propyl)-2--propylamine or their therapeutically sui-table salts, 40-70  w.%   of liquid polyoxiethylene, 10-20   w %   of solid polyoxiethylene, 2-30   w.%   of a nonionic surface active agent, 2-20   w.%   of propyleneglycol, if desired 0.5-2    w.%   of a polymer the a value of which is > 0.6, and  if desired in a quantity needed to 100 w.%, other auxili-ary agents.
Patent CA-2066411-A1 (CA)
Inventor: KRUEGER DENNIS L
IPC: B32B5/18
Filed: 1990-10-10
Abstract: Microtextured elastomeric laminates (1) comprising at least one elastomeric layer (3) and at least one thin skin layer (2, 4) is preferably prepared by coextrusion of the layers followed by stretching the laminate past the elastic limit of the skin layers and then allowing the laminate to recover.
Patent CA-2069034-A1 (CA)
Inventor: NAGASHIMA NORIAKI
IPC: H04W72/10
Filed: 1992-05-20
Abstract: In a network for serving cordless stations located in microcells, speech channels are divided into channel groups such that no intermodulation products occur among the channels of each group. Base units are located respectively in the microcell sites to establish two-way speech channels with their cordless stations. Each base unit generates and updates priority values of the channel groups as representations of usages of all channels through a statistical process. Depending on the updated priority values different channel groups are uniquely assigned to the base units. Timeslots are defined uniquely by the respective base units using the identifiers of the assigned channel groups for broadcasting zone-registration polling signals during the defined timeslots to elicit a zone registration response from each cordless station.
Patent CA-2070336-A1 (CA)
Title: High strength reinforcement
Inventor: MIZNER ERIC C
IPC: B60C9/06
Filed: 1992-06-03
Abstract: Abstract of the Disclosure HIGH STRENGTH REINFORCEMENT Tires of a large size for use off-the-road with super tensile reinforcement having values of at least 4655N (1046 lbs) break strength for bunched type cord.
Patent CA-2070582-A1 (CA)
Inventor: BALL JOSEPH F
IPC: B65D30/10
Filed: 1992-06-05
Abstract: A coil of an interconnected chain of open bags is provided in which the coil has a center opening having a diameter at least as great as the transverse dimension of the bags.  A dispenser is provided on which a coil of bags is mounted.  An end of the chain is pulled from the center open-ing and fed around a tapered mandrel and thence over a feed control mandrel oriented in angular relationship with the tapered mandrel.  The web is then fed to a bagging machine for dispensing, loading and closing of the bags. The table on which the coil is mounted is rotatable so that the orientation of a span of bags running from the coil to the tapered mandrel remains substantially constant as the web is fed.
Patent CA-2071905-A1 (CA)
Title: Fixture for anchoring in bone tissue
Inventor: BRANEMARK PER-INGVAR
IPC: A61C8/00
Filed: 1991-05-16
Abstract: ABSTRACT OF THE DISCLOSURE    A fixture intended for implantation, for anchoring in bone tissue such as a tooth crown or the like.  The fixture (1) is provided with a surface coating of tissue-friendly material, at least in the area intended to come into contact with the bone tissue, and has a cylindrical shaft provided with external threading (8, 9) and a cylindrical head (5). The fixture (1) is arranged to be screwed into a previously prepared hole in the bone tissue, the diameter of said hole being substantially in agreement with the core diameter of the shaft section and the threaded shaft section (8, 9) of the fixture (1) has at least one thread-free zone (10) arranged to be brought into contact with nerves present in the bone tissue.
Patent CA-2075973-A1 (CA)
Title: Apparatus and method for atherectomy
Inventor: FISCHELL ROBERT E
IPC: A61B17/22
Filed: 1992-02-18
Abstract: IMPROVED APPARATUS AND METHOD FOR ATHERECTOMY      ABSTRACT    The invention provides a catheter (10) for excision of obstructive tissue from the vessel  of a living body.   The catheter (10) includes a cut/collect catheter (20) having a torque cable (22) whose proximal end lies outside the living body and whose distal end is coupled to the distal end of a cutting cylinder  (26) that has a cutting edge  (27) at the cutting cylinder (26) proximal end.  The cutting edge (27) cuts tissue  from  the  tissue  wall  as  it  is  pulled  back  in  a retrograde  direction.    Additionally,  there  is  included  a shielding catheter (40) which is displaceable with respect to the cut/collect catheter (20) throughout most of the length of the cut/collect catheter (20).  The shielding catheter (40) has a metal cut-out cylinder attached to a plastic cylinder distal end.    The  cut-out  cylinder  has  a cut-out  section  and a cylindrical arc portion which forms a shield to prevent cutting of an arc of a vessel wall.