baber/WOPTO huggingface dataset:
Patent CA-2028270-A1 (CA)
Title: Gas shrouded electrode for a plasma carburizing furnace
Inventor: LAW TREVOR J
IPC: H05H1/34
Filed: 1990-10-22
Abstract: An electrode for a plasma carburizing furnace is disclosed which is adapted to provide a dynamic gas shroud for inhibiting the buildup of carbon soot on the insulating elements of the electrode.  The reduction of carbon soot buildup on the insulating components dramatically reduces the frequency of electrical short-circuits across the insulating components, thereby increasing the availability of the furnace for processing of workpieces.
Patent CA-2028402-A1 (CA)
Title: Moulded panel
Inventor: ROHRLACH MILO L
IPC: B29C37/00
Filed: 1990-10-24
Abstract: ABSTRACT      A panel having a finish face, a substrate and a lamina of moulded polyurethane between the two is formed in a single closable die having two portions, the first stage of the operation being to spray a release agent onto a face forming surface of one die portion, then spray an aliphatic polyurethane coloured film onto the release agent, spray an elastomer polyurethane over that film and allow the elastomer to at least partially set, lay a sheet of reinforcing fibre which can for example be a continuous filament glass over the at least partially set elastomer, dispense the liquid ingredients of a rigid foam polyurethane over the glass, close the mould, and remove the product after setting.
Patent CA-2029308-A1 (CA)
Title: Interpolymer latices from esters of (meth)acrylic and vinyl esters of branched chain carboxylic acids
Inventor: SCHOLTEN HENRICUS P H
IPC: C08F220/00
Filed: 1990-11-05
Abstract: A B S T R A C T            INTERPOLYMER LATICES FROM ESTERS OF (METH)ACRYLIC ACID    AND VINYL ESTERS OF BRANCHED CHAIN CARBOXYLIC ACIDS      Interpolymers of esters of (meth)acrylic acid and vinyl esters of branched chain carboxylic acids, latices containing such interpolymers, their preparation and coating compositions comprising such latices and solid polymeric products such as redis-persible latex powders formed by physical drying of such latices.     Interpolymers provide attractive combination of properties to latices and coatings.
Patent CA-2030008-A1 (CA)
Inventor: TONAI ICHIRO
IPC: H01L31/10
Filed: 1990-11-14
Abstract: There is disclosed a light-receiving device comprising an absorption layer formed of a semiconductor material which is capable of generating electric charges in response to an incident light, a plurality of light-detecting regions formed in the absorption layer, each outputting an electric signal in response to an incident light signal, and a depletion region formed between the adjacent light-detecting regions for collecting electric charges generated in a portion of the absorption layer between the adjacent light-detecting regions.
Patent CA-2030081-A1 (CA)
Title: Zipper guide and spreader device for form, fill and seal machines
Inventor: MCMAHON MICHAEL J
IPC: B65B9/20
Filed: 1990-11-15
Abstract: ABSTRACT OF THE DISCLOSURE           A zipper guide and spreader device for form, fill and seal apparatus comprises a package material guiding and spreading mechanism wherein a pair of articulated members have zipper guideways  The members are hingedly connected together and one of the members is hingedly connected to a fixed support.  An actuator operates the articulated members from a biased relaxed position into an articulated material-spreading position wherein the material is spread for eliminating wrinkles before edge sealing across the material below the discharge end of the forming and filling tube.
Patent CA-2032078-A1 (CA)
Title: Mold release agent
Inventor: SUGAWARA TOMOO
IPC: C08G61/08
Filed: 1990-12-12
Abstract: ABSTRACT OF THE INVENTION           A polyvinyl alcohol precoated mold provides a reactive injection molding (RIM) process without any sticky adhesion on the mold surface or product produced.            According to the method of the present invention, the products so obtained have acceptable hardened surfaces and a smooth surface appearance. The molded product has no adherent polymerization residues on its surface providing for improved adhesion of subsequently applied coatings.   pa90104.ttd
Patent CA-2032548-A1 (CA)
Title: Process and apparatus for the preparation of balloons
Inventor: LANG PHILIP E
IPC: A63H27/10
Filed: 1990-12-18
Abstract: An apparatus and process are described for turning inside out (i.e. everting) a part of the neck of a balloon, the apparatus essentially comprises an elongate mandrel which is tapered at one end so that it can be inserted into the neck of the balloon, and pressure applying means, which in use press a portion of the neck against the inserted mandrel. The neck is everted simply by a reciprocating motion of the mandrel relative to the pressure applying means. An adhesive glue can then be administered to the everted neck portion. There is further described an automated apparatus for everting a plurality of balloons, applying adhesive to each of the everted neck portions, securing each prepared balloon to a protective, removable strip, and packaging the secured balloon in either a cassette or carob form.
Patent CA-2039207-A1 (CA)
Title: Optical Article for Reflection Modulation
Inventor: RIDER CHRIS B
IPC: G02F1/19
Filed: 1991-03-27
Abstract: OPTICAL ARTICLE FOR REFLECTION MODULATION            Abstract of the Disclosure An optical article capable of modulating the reflection of polarized monochromatic electromagnetic radiation is disclosed comprised of a reflective metal layer, means acting as a support for directing the electromagnetic radiation to the reflective metal layer, an electrooptic medium that exhibits a refractive index which is a function of an applied electrical potential, and a counter electrode.  At least one of the reflective metal layer and the counter electrode taking the form of laterally spaced segments.  The reflective metal layer has a thickness of less than 0.5 µm, and a dielectric layer having a thickness in the range of from 0.1 to 10 times the wavelength of the electromagnetic radiation and comprised of at least one metal oxide, metal fluoride, or low molecular weight aromatic compound is coated on the support.  The electrooptic medium is a polymeric layer coated on the reflective metal layer exhibiting a second order polarization susceptibility greater than 10-9 electrostatic units and comprised of polar aligned molecular dipoles having an electron donor moiety linked through a conjugated .pi. bonding system to an electron acceptor moiety.  The polymeric layer exhibits a refractive index which differs from that of the dielectric layer by less than 20 percent in the absence of an applied electrical potential.
Patent CA-2039333-A1 (CA)
Inventor: PICHAT PHILIPPE
IPC: C02F103/00
Filed: 1991-03-28
Abstract: Le procédé est du type selon lequel les fractions solides des déchets, de toutes origines, sont concassées et broyées à granulométrie inférieure à 5mm puis soumises à un chauffage entre 750°C et 1350°C.      Selon l'invention, aprés un éventuel ajout de déchets liquides pour ob-tenir une masse pâteuse, on incorpore à cette dernière un réactif, sous forme pulvérulente à grains inférieurs à 500 microns à base de carbonate de calcium, oxyde de silicium et éventuellement, de l'alumine et des oxydes de fer avec des quantités telles qu'après incinération on ait un rapport   Application au traitement de tous types de déchets par combustion.
Patent CA-2039492-A1 (CA)
Title: Still store system and method with simple image access
Inventor: STERN JOHN
IPC: H04N1/21
Filed: 1991-03-28
Abstract: ABSTRACT OF THE DISCLOSURE      A digital still store system (10) receives composite digital 4:2:2 D1 video signal inputs in parallel at (12) or  serially  at  (14).    The  signals  are  supplied  in component form selectively to one of framestorss (18) and (20).    The  component  signals  are  supplied  from  the framestores  (18)  and  (20)  to hard disks  (22)  through a buffer store  (24)  and disk input/output  (I/O)  circuits (26).     Each of the hard disks (22) stores still video images as either 525 or 625 line digital frames for either NTSC or PAL composite signal inputs and outputs.  Y and C fields of component video signal information are supplied from the hard disks (22) through the buffer store (24) and one of the frame stores 18 and 20 to a compositor (28) for output as digital 4:2:2 video signals.  The buffer store (24) obtains ths video signal fields for either full size images or 1/4 size images, when an array for browsing and selection  is  desired.    When  the  1/4  size  images  are desired,  the  field  video  signals  are  obtained  by addressing every fourth pixel of the field for readout.     March 30, 1990
Patent CA-2041023-A1 (CA)
Title: Photocurable elements and flexographic printing plates prepared therefrom
Inventor: GOSS WILLIAM K
IPC: B41N/
Filed: 1991-04-23
Abstract: Photocurable elements which are useful for preparing flexographic printing plates are provided which comprise a printing layer and a contiguous base layer, the printing layer comprising about 40 to 95 parts by weight of an elastomeric block copolymer, about 5 to 60 parts by weight of a second elastomeric polymer which is incompatible with the block copolymer, a photopolymerizable monomer, and a photoinitiator. The printing layer preferably also comprises an actinic radiation scattering and absorbing pigment.      Also provided are relief printing plates prepared from the photocurable elements. The printing plates have a tack-free surface having excellent ink transfer properties, abrasion resistance, and solvent resistance.      A high level of exposure latitude may also be provided in the photocurable elements of the invention.
Patent CA-2041244-A1 (CA)
Inventor: BRANDT LENNART H
IPC: B63H1/18
Filed: 1991-04-25
Abstract: The invention relates to a boat propeller unit with double, counter-rotating propellers. The forward propeller is designed to function without cavitation, while the after-propeller is at least partially cavitating, being non-cupped, arid being made with a blade width of between 60% and 75% of the blade width of the forward propeller.
Patent CA-2042067-A1 (CA)
Inventor: MALLET JEAN-LAURENT
IPC: G06T19/00
Filed: 1990-09-19
Abstract: L'invention concerne un procédé d'obtention d'une modélisation d'une surface. Il est caractérisé par les étapes consistant à obtenir des mesures de données géométriques relatives à des points spécifiques de la surface, effectuer un maillage de la surface passant par lesdits points, mémoriser à une adresse spécifique à chaque noeud du maillage les coordonnées du noeud, le nombre de satellites du noeud, une information d'accès aux adresses desdits satellites et par suite aux informations y relatives et des données géométriques éventuellement associées audit noeud; pour chaque noeud, définir un indice de rugosité local obtenu à partir d'une somme pondérée des coordonnées actuelles du noeud et de ses satellites, définir la somme d'un indice de rugosité global, constitué par l'addition de tous les indices de rugosité locaux, et d'un indice global de violation desdites données géométriques, ajuster de façon itérative les coordonnées des noeuds indéterminés, en utilisant à chaque fois l'addition d'une combinaison pondérée des coordonnées actuelles de voisins du noeud et d'une combinaison des données géométriques associées au noeud, pour amener ladite somme à un minimum, et créer une représentation de la surface à partir des coordonnées ajustées.
Patent CA-2042725-A1 (CA)
Title: Access unit for local area network and concentrator system thereof
Inventor: NISHIKAWA TOSHIYUKI
IPC: H04L12/42
Filed: 1991-05-16
Abstract: An access unit for a local area network is disclosed whereby the single port of a concentrator is branched into a plurality of ports by connecting a former-stage connector of a first access unit to a port of the concentrator,  and connecting the former-stage connector of another, similar access unit to the latter-stage connector of the first access unit to thereby cascade a plurality of access units.  The LAN is expanded by connecting a workstation to the port connector of each of the cascaded access units.   The thus connected workstations provide an overlap signal composed of an AC signal and a DC signal.  DC signal extraction circuit in the access unit extracts the DC signal from the overlap signal. A relay drive circuit is operated by the DC signal so that a relay is switched to the port connector side and the circuit is then connected to the workstation.
Patent CA-2045666-A1 (CA)
Inventor: TAKAYANAGI HISAO
IPC: C07D307/20
Filed: 1990-11-29
Abstract: Abstract of the disclosure Novel acyclic terpene compounds useful as interme-diates for producing sarcophytol A which have an anti-carcinogenic promotor activity and anti-tumor activity, which compounds are shown by the following general formula (I):                  (I) [wherein R1 is a hydrogen atom, 1-alkoxyalkyl group, tetrahydrofuryl group, tetrahydropyranyl group or acyl group; R2 is a group of formula: -CHO, -CH20R3 or   (wherein R3 is a hydrogen atom, 1-alkoxyalkyl group, tetrahydrofuryl group, tetrahydropyranyl group or acyl group; and R4 is C1 to C4 alkyl group) with the proviso that R1 and R3 do not represent the same substituents simultane-ously; when R1 is a hydrogen atom, R3 is not acetyl group or tetrahydropyranyl group; and when R2 is a group of formula:     R1 is not a hyarogen atom].
Patent CA-2046425-A1 (CA)
Title: Absorbent product having mechanical attachment mechanism
Inventor: DAVIS MARTHA
IPC: A61F13/56
Filed: 1991-07-05
Abstract: Absorbent products, such as sanitary napkins, are provided which include mechanical attachment means for securing the undergarment-facing side of these products to an undergarment for minimizing shifting during movements by a wearer. The mechanical attachment means includes male and female fastening elements which engage to capture a portion of the thickness of the undergarment and may include slide fasteners, snap fasteners and fasteners including apertured rings with protruding button male portions.
Patent CA-2047691-A1 (CA)
Title: Monoclonal antibodies to synthetic pyrethroids and method for detecting the same
Inventor: STANKER LARRY H
IPC: C07K16/00
Filed: 1990-02-26
Abstract: Methods are described for making specific monoclonal antibodies which may be used in a sensitive immunoassay for detection of synthetic pyrethroids in foods and environmental samples. Appropriate sample preparation and enzyme amplification of the immunoassay for this widely-used class of pesticides permits detection at low levels in laboratory and field tested samples.
Patent CA-2049960-A1 (CA)
Title: Ferroelectric liquid crystal mixtures
Inventor: DUBAL HANS-ROLF
IPC: C09K19/46
Filed: 1990-03-21
Abstract: Abstract of the Disclosure Ferroelectric liquid crystalline mixtures The novel ferroelectric liquid-crystalline mixtures are based on at least two mixture components of the general formula (I)                 (I) but additionally contain at least one optically active dope from one or more of the following groups a)   optically active esters of tetrahydrofuran-2-carboxylic acid b)   optically active aryl 2,3-epoxyalkyl esthers c)   optically active 1,3-dioxolan-4-yl ethers.            The ferroelectric LC mixtures have a high spontaneous polarization and facilitate substantial compensation of the pitch of the helix in a nematic phase.
Patent CA-2051461-A1 (CA)
Title: Underwater frazil ice detector
Inventor: DALY STEVEN F
IPC: G05B11/01
Filed: 1991-09-16
Abstract: UNDERWATER FRAZIL ICE DETECTOR                            ABSTRACT     An underwater frazil ice detector is disclosed comprising channel means disposed underwater for moving water therethrough, means for drawing water through said channel means, screen means disposed in and across said channel means so that water drawn therethrough by said water drawing means passes through said screen means, pressure detecting means disposed in said channel means and downstream of said screen means for detecting pressure differential across said screen means, whereby flow of water through said screen means is constricted when frazil ice forms thereon, creating an increased pressure differential across said screen means and thereby indicating the presence of frazil ice.
Patent CA-2052005-A1 (CA)
Title: Universal waterfeeder control circuit
Inventor: JOHN ROBERT S
IPC: F22B35/00
Filed: 1991-09-23
Abstract: John 6-9 UNIVERSAL WATERFEEDER CONTROL CIRCUIT          ABSTRACT   A universal waterfeeder control circuit provides a switch selection of the waterfeed functions.  The waterfeed period and number of waterfeed cycles are matched to the boiler control requirements and the control circuit operates automatically upon application of power to the input in response to a low water signal.
Patent CA-2052093-A1 (CA)
Title: Device for making coffee
Inventor: BIANCO CARLO
IPC: A47J31/32
Filed: 1991-09-24
Abstract: ABSTRACT          A  machine  for making coffee with a cylindrical chamber  in which  the  head  walls are made up of an  equal  number  of pistons mounted on circulating ball screw actuators.          Once the coffee powder is put into the chamber,  the pistons are  brought  together to exert pressure,  after  which  hot water is introduced to make the infusion.
Patent CA-2052452-A1 (CA)
Title: Process for producing high purity hydrogen
Inventor: FONG WING-CHIU F
IPC: C01B3/48
Filed: 1991-09-30
Abstract: A process for producing high purity hydrogen is disclosed.      Specifically, the process includes (1) partially oxidizing a gaseous hydrocarbonaceous feedstock to produce a synthesis gas mixture of carbon monoxide and hydrogen, (2) reacting the synthesis gas mixture with steam to convert the carbon monoxide into a raw gas mixture which primarily includes carbon dioxide and hydrogen, and (3) subjecting the raw gas mixture to pressure swing adsorption to purify the raw gas mixture, thereby producing high purity hydrogen and a reject gas mixture of impurities.      The gaseous hydrocarbonaceous feed is specific, inasmuch as it is characterized by containing a major component which includes at least one C1-C3 hydrocarbon and which has an average molecular weight of up to about 30.
Patent CA-2052489-A1 (CA)
Title: Soluble polyimides
Inventor: KRAMER ANDREAS
IPC: C08G73/10
Filed: 1991-09-30
Abstract: Soluble Polyimides Abstract of the Disclosure The invention relates to soluble homo- or copolyimides of formula I                               wherein Y is hydrogen or the substituents Y, together with the linking N atom, are a divalent radical of of formulae IIa to IIc       (IIb),                 (IIc) and X is the radical of of an aromatic amine after removal of the amino end groups, and n is an integer from 5 to 150.   The compounds of the invention are readily soluble in organic solvents and are suitable tougheners for epoxy, bismaleimide and triazine resin systems.
Patent CA-2052711-A1 (CA)
Title: Method of stabilizing a carbon dioxide sensor
Inventor: NELSON ALAN
IPC: G01N33/00
Filed: 1991-10-03
Abstract: PATENT       METHOD OF STABILIZING A CARBON DIOXIDE SENSOR                   ABSTRACT The method of stabilizing a carbon dioxide sensor involves treatment of the sensor to reduce the instability that may occur in carbon dioxide sensors when such sensors are exposed to either very low or very high carbon dioxide levels for extended periods of time.  This is accomplished by storing the sensor  in an aqueous solution containing at least 2 weight percent carbon dioxide, for from several days to several months.  The solution  may  be  prepared  in  advance,  or  may  be dynamically infused with carbon dioxide to provide the desired carbon dioxide content.
Patent CA-2053226-A1 (CA)
Title: Rigid polyurethane foams with low thermal conductivities
Inventor: TUCKER BENJAMIN W
IPC: C08J9/00
Filed: 1991-01-10
Abstract: Disclosed are rigid cellular polyurethanes prepared by bringing together under foam forming conditions an aromatic polyisocyanate and a polyhydric combination comprising a major proportion of a crude polyester polyol and minor proportion of a cross-linking polyol. This selection of particular ingredients gives rise to foams having extremely low initial insulation K factor values.
Patent CA-2055359-A1 (CA)
Inventor: PELLOW SCOTT W
IPC: B24D18/00
Filed: 1991-11-13
Abstract: Abstract of the Invention A device and process is disclosed for producing filamen-tary abrasive particles having substantially equal aspect rati-os without further length reduction.
Patent CA-2055680-A1 (CA)
Title: Tricyclic compounds
Inventor: BERGER JACOB
IPC: C07D519/00
Filed: 1991-11-15
Abstract: NEW TRICYCLIC COMPOUNDS             ABSTRACT OF THE DISCLOSURE   5-HT receptor antagonist compounds of Formula I       in which: the dashed line denotes an optional bond; X and Y are independently selected from hydrogen, halogen, hydroxy, lower alkoxy, benzyloxy, lower alkyl, nitro, amino, aminocarbonyl, (lower alkyl)amino, di(lower alkyl)amino, and (lower alkanoyl)amino; Z is -O-, -S- or -N(R2)-; R1 and R2 are independently selected from hydrogen and lower alkyl or are together -(CH2)n- wherein n is an integer from 2 to 4; and FF27170.HVM                               27170-FF            R3 is selected from   (a)   (b)           (c)            (d) in which: p is 0 or 1; q is 1, 2 or 3; and R4 is  C1-7 alkyl; their pharmaceutically acceptable salts, individual isomers or mixtures of isomers, processes for their preparation, compositions containing them, and their methods of use.     FF27170.HVM          27170-FF
Patent CA-2056042-A1 (CA)
Title: Motorcycle driver's helmet
Inventor: CAPILUPI MARIO J JR
IPC: A42B3/04
Filed: 1991-11-22
Abstract: ABSTRACT OF THE DISCLOSURE      A motorcycle driver's helmet is described.   a special optical system or periscope type design is built onto the rear of the helmet for use by a passenger, i.e. not by the wearer.   The structure enables the passenger to see in front of the running motorcycle, such an traffic and/or the scenery ahead without having to move to the side to look around the driver.
Patent CA-2060016-A1 (CA)
Title: Method of making polarization retaining fiber
Inventor: BERKEY GEORGE E
IPC: G02B6/024
Filed: 1992-01-24
Abstract: Disclosed is a method of making a polarization retaining single-mode optical fiber. There is initially formed a draw blank having diametrically opposed longitudinal apertures in the cladding glass parallel to the core glass region. The draw blank is drawn into a fiber under such conditions that the apertures close as the fiber is being drawn. The flow of surrounding glass, including the core glass region, toward the collapsing apertures, causes the core to assume an elliptical shape.      The apertures are of such cross-sectional area and spacing from the core that the core develops the desired aspect ratio.
Patent CA-2063616-A1 (CA)
Title: Total containment welding of plastic tubes
Inventor: SPENCER DUDLEY W C
IPC: A61M39/00
Filed: 1992-03-20
Abstract: A plastic tube is cut into two sections which are sealed closed by a sterile method wherein the tube is loaded into two clamping jaws which flatten the tube. The tube is cut through the flattened section and the cut ends are heated to their molten state. A wafer having wings is located between the cut ends with the wings penetrating the lumens to create an internal plug as the wings force the molten material inwardly. The plugs add to the strength of the resultant seal. If desired, the molten ends are pressed into a cavity which is cooled to a temperature below the molten temperature to seal the ends. The tubes are then removed from the cavity. When it is desired to connect individual tube sections the two tube sections are placed in clamp members in axial alignment slightly spaced from each other. The ends of the tube sections are melted by a melt/wipe process and the tube sections are then pressed into contact with each other to be welded into an integral tube. The same device is used for both the sterile disconnect and connect procedures.