baber/WOPTO huggingface dataset:
Patent CA-2027478-A1 (CA)
Title: Process for the preparation of epimer-free sugar alcohols from the groupconsisting of xylitol, sorbitol (d-glucitol), 4-o-.beta.-d-galactopyranosyl-d-glucitol and 4-o-.alpha.-d-glucopyranosyl-d-sorbitol
Inventor: DARSOW GERHARD
IPC: C07H3/04
Filed: 1990-10-12
Abstract: Process for the preparation of epimer-free sugar alcohols from the group consisting of xylitol, sorbitol (D-glucitol), 4-O-.beta.-D-galactopyranosyl-D-glucitol and 4-O-.alpha.-D-glucopyranosyl-D-sorbitol. These sugar alcohols can be prepared in epimer-free form from the corresponding sugars by catalytic hydrogenation in aqueous solution using hydrogen, the hydrogenation being carried out continuously at 100-500 bar of H2 and 60-125°C on a fixed bed of carrier-free mouldings composed of pressed powders of the elements of the iron group of the periodic table. The mouldings have a compressive strength of above 50 N and an internal surface of 10-90 m2/g.
Patent CA-2027563-A1 (CA)
Title: Stud unit and skid-proof tire having the same
Inventor: HOJO HIROO
IPC: B60C11/16
Filed: 1990-02-22
Abstract: A B S T R A C T       The stud unit of the present invention is used for skid-proof tires of vehicles.  On snow- or ice-covered road, a force works to a front end of a stud contacting the road when the vehicle applies brake or accelerates, so that the stud is kept projecting from a cylinder because the projected lines of the stud and the cylinder are mutually engaged or the projected lines of the stud engage with an engage section of the cylinder. Therefore, the front end of each stud is kept projecting from the surface of the tire.  Braking action is secured by the projected studs.  Note that, on a dry road, the treads of the tire hold the road without slipping, so that no force works to the stud to incline, and the stud can smoothly retract into the cylinder.
Patent CA-2028837-A1 (CA)
Inventor: WILHELM GERD
IPC: B01D39/14
Filed: 1990-02-09
Abstract: A regular economically producible packing of use in chemical engineering equipment is described. Physico-chemical phenomena in thermal separating and mixing apparatus in particular are associated with contacts between different phases in cocurrent and countercurrent operation. The important feature of an appropriate packing design is to intensify transverse mixing in the flowing phases and to intensify contact between then. This purpose is served in the packing according to the invention not only by known fan-like vane elements but also by a number of channels rows which are parallel to one another of offset from one another, the effect of such rows being to boost transverse mixing and phase contact of the flowing media, more particularly when the lighter phase flows at elevated speed.
Patent CA-2029184-A1 (CA)
Inventor: GABARA VLODEK
IPC: C08G69/46
Filed: 1990-11-02
Abstract: Title Para-Phenylene Diamine Polymer Color Improvement Abstract of the Disclosure A process is provided for increasing the brightness and decreasing the discoloration of PPD polymer during the polymer production.  Sequestering agents having a stability constant (K1), for Fe (III), greater than about 12 are slurried with the PPD polymer in water and then rinsed, neutralized, and dried.
Patent CA-2030996-A1 (CA)
Title: Airfoil lance apparatus for homogeneous humidification and sorbent dispersion in a gas stream
Inventor: MYERS ROBERT B
IPC: B01F23/00
Filed: 1990-11-28
Abstract: An apparatus for spraying an atomized mixture into a gas stream comprises a stream line airfoil member having a large radius leading edge and a small radius trailing edge. A nozzle assembly pierces the trailing edge of the airfoil member and is concentrically surrounded by a nacelle which directs shielding gas from the interior of the airfoil member around the nozzle assembly. Flowable medium to be atomized and atomizing gas for atomizing the medium are supplied in concentric conduits to the nozzle. A plurality of nozzles each surrounded by a nacelle are spaced along the trailing edge of the airfoil member.
Patent CA-2032697-A1 (CA)
Title: Elements for recording volume transmission holograms
Inventor: SMOTHERS WILLIAM K
IPC: G03H1/04
Filed: 1990-12-19
Abstract: TITLE  ELEMENTS FOR RECORDING VOLUME TRANSMISSION HOLOGRAMS      An element for recording volume transmission holograms is provided comprising a photopolymerizable layer on a reflective backing.  The layer contains (a) a cellulose ester, polystyrene, styrene copolymer, or poly(methyl methacrylate) binder,  (b) a liquid monomer, and (c) a photoinitiator.
Patent CA-2033152-A1 (CA)
Inventor: UCHIDA MASAKI
IPC: B05C17/00
Filed: 1990-12-24
Abstract: LIQUID PAINTING INSTRUMENT                    ABSTRACT OF THE DISCLOSURE           A liquid painting instrument comprises a pipe-like pen point core body of substantially oval configuration in cross-section, a pair of longitudinal slits oppositely provided on both end portions of the major axis of the oval configuration so that the core body may easily be elastically deformed or bent, and a pen point cover and put on the outer peripheral surface of the core body.
Patent CA-2035745-A1 (CA)
Inventor: GARIN PAUL V III
IPC: A61G5/04
Filed: 1991-02-05
Abstract: ABSTRACT OF THE DISCLOSURE         An economical light weight foldable wheelchair is  selectively operable  in a motorized,  attendant or occupant driven self-propelled mode of operation.   The wheelchair  includes two opposed  side  frames  that  are foldable to a laterally more compact condition, a motor drive assembly and a foldable energy supply system support assembly.   The  energy  supply system support assembly slidably receives two battery units with convenient front access and automatic electrical connection.  Storage under the seat assures a center of gravity well ahead of the rear wheels.  The motor drive system includes a releasable wheel drive assembly that supports two large rear wheels with a center of rotation behind, under or in front of the back support of the seat.  Manual drive rings are mounted on the outside of the rear wheels and the occupant can easily reach a hub mounted toggle handle for the wheel drive assembly to control engagement of the rear wheels with the drive motors.  An occupant may thus use the motor drive assembly or disengage the drive motors and manually self-propel the wheelchair using the manual drive rings.
Patent CA-2036449-A1 (CA)
Title: Monofunctional alcohols to prevent gelation in two component isocyanate coatings
Inventor: MEYER WALTER C
IPC: C09D175/04
Filed: 1991-02-15
Abstract: An improved process for applying a two component polyurethane coating composition to a substrate; a stream of a polyol having reactive hydroxyl groups is mixed with a stream of an organic polyisocyanate crosslinking agent to form a blend that is applied to the substrate; the improvement used in this process is as follows: adding to the stream of polyol a monohydric primary or secondary alcohol in a ratio of about 0.5 - 2.0 equivalents of alcohol hydroxyl to polyol hydroxyl before mixing with the stream of organic polyisocyanate and before application to the substrate to prevent or substantially reduce the formation of gel particles; wherein the monohydric primary or secondary alcohol has a 90% evaporation rate at 25°C of less than 10,000 seconds as determined by ASTM D3539 using an Automatic Shell Thin Film Evaporator.
Patent CA-2038105-A1 (CA)
Title: Inflatable packing element
Inventor: MODY RUSTOM K
IPC: E21B33/127
Filed: 1991-03-12
Abstract: An inflatable packing element for an inflatable packer or bridge plug utilized in subterranean wells comprises a tubular elastomeric sleeve which is surrounded by a plurality of circumferentially overlapping flexible metal ribs. The op-posite ends of the ribs are respectively welded to an external surface provided on a force transmitting sleeve. The sleeve is provided with a shoulder having an abutting relationship with an internally projecting shoulder provided on the tubular mounting structure for the inflatable element.
Patent CA-2039409-A1 (CA)
Title: Resin composition for powder coatings
Inventor: KANO TAISAKU
IPC: C09D133/14
Filed: 1991-03-28
Abstract: There is disclosed a resin composition for powder coatings, which comprises a blend of two acrylic resins being obtained by polymerizing a prescribed amount of monomer component (a-1) represented by formula (I) and a prescribed amount of another monomer component (a-2), respectively, and having different polymerization degrees represented by viscosities at 140°C and a polybasic acid compound in 1.5 to 0.5 equivalent ratio of the glycidyl groups in said acrylic resins to the acid groups in the polybasic acid compound.          Formula (I) (see fig. I) wherein R1 and R2 each represent a hydrogen atom or a lower alkyl group.  Disclosure described provides a resin composition for powder coatings that can form a coating film having a mat smooth appearance and excellent in flexibility as shown Du Pont impact resistance and the Ericksen test as well as excellent in nail scratch resistance.
Patent CA-2042965-A1 (CA)
Title: Wrap around body with promotional flap extension
Inventor: SIMONE RONALD A
IPC: B65D25/36
Filed: 1991-05-21
Abstract: ABSTRACT OF THE DISCLOSURE          A wrap around body either in the form or of an actual cup or a label applied to a container is made from a paper blank which wraps around itself for more than 360° providing a main body portion and an overlap portion.  The wrap around body includes first and second spaced apart secured regions where the blank is secured to itself.  The first secured region defines a free end on the overlap portion and the second secured region is located inwardly away from the free end of the overlap portion.  The first secured region is releaseable under force thereby providing a liftable flap back to the second secured region.  This liftable flap is useable for a number of different functions.  It may itself be a coupon or a number of coupons and removable from the remainder of the wrap around body or it may be used to hide prize winning information provided either on the undersurface of the flap or on the body normally covered by the flap.
Patent CA-2043245-A1 (CA)
Title: Recovery of metals from insoluble metal oxides by microorganisms
Inventor: SHELEF GEDALIAH
IPC: C12N1/20
Filed: 1991-05-24
Abstract: ABSTRACT Dissolution of metals by bioleaching of insoluble metal oxides by means of a microorganism culture at a neutral or near neutral pH.  Typical examples of the microorganism used are yeast strains and bacterial strains such  as  Bacillus  strains,  Pseudomonas  strains  and Citrobacter strains. The method is useful, amongst others, for the extraction of metals from industrial ash wastes such as coal fly ash.
Patent CA-2047534-A1 (CA)
Title: Pump for the delivery of blood
Inventor: JUFER MARCEL
IPC: A61M60/869
Filed: 1991-07-22
Abstract: Abstract of the Disclosure The pump for delivering blood has a torus-shaped deformable bag disposed coaxially about a central section within the pump housing.  An annular thruster is also provided coaxially of the central section and engages the bag.  An electric motor within the housing drives a threaded spindle which in turn drives a nut connected with the thruster via radial spokes in order to move the thruster against the bag to deform the bag in order to exhaust blood therefrom.  In another embodiment, a pair of torus-shaped deformable bags are provided within the pump housing on opposite sides of the thruster.  Both bags may be used for pumping blood or one bag may be used to form a work store of gas.
Patent CA-2049899-A1 (CA)
Title: Still picture display apparatus and external storage device used therein
Inventor: OTAKE MASAHIRO
IPC: H04N5/262
Filed: 1991-08-26
Abstract: A still picture display apparatus displays a still picture in which characters each composed of combination of a predetermined number of dots on a raster scan monitor in accordance with character data and program data both stored in an external storage device in advance.  Offset data of at least one of a horizontal direction and a vertical direction correspondingly to each character is stored in an offset table formed in the external storage device.  A picture processing unit determines an address on the basis of the offset data and at least one of a horizontal position and a vertical position, and reads video data from a video data memory according to the address to apply to the raster scan monitor.
Patent CA-2051267-A1 (CA)
Title: Synthesis of tetrafunctional polyethers and compositions formed therefrom
Inventor: WARDLE ROBERT B
IPC: C08L71/02
Filed: 1991-09-12
Abstract: IMPROVED SYNTHESIS OF TETRAFUNCTIONAL POLYETHERS AND COMPOSITIONS FORMED THEREFROM          Abstract of the Disclosure:      Polymers are produced from 4 and 5 member cyclic ethers, which polymers have hydroxyl functionalities of 4. The cyclic ethers are polymerized with an acid catalyst ant a tetraol initiator having the general formula:                             .
Patent CA-2053453-A1 (CA)
Title: Prosthetic hip stem implant with torque adapter
Inventor: CAMPANA DONNA L
IPC: A61F2/36
Filed: 1991-10-15
Abstract: PROSTHETIC HIP STEM IMPLANT WITH TORQUE ADAPTER                Abstract of the Disclosure A prosthetic hip stem implant and torque wrench adapter.  The hip stem included an extraction bore formed through its body and a plurality of recessions formed in the body upper surface.  A lip extends outwardly of the body and including alignment indicia for visually aligning the implant during seating.  The torque wrench adapter includes a movable arm which is accommodated in the extraction bore of the implant.  A pair of protrusions extending downwardly from the adaptor head to engage the implants' recesses. An adjustment screw shifts the arm toward the protrusions to clamp the adapter to the implant.
Patent CA-2054411-A1 (CA)
Title: Process for the preparation of organosilanes containing methacryloyloxy or acryloyloxy groups
Inventor: BERNHARDT GUENTHER
IPC: C07F7/18
Filed: 1991-10-29
Abstract: ABSTRACT          A novel process for the preparation of organosilanes containing methacryloyloxy or acryloyloxy groups of the general formula I                      (I) in which R1 represents a hydrogen atom or a methyl group, R2 represents an alkyl radical having 1 to 4 C atoms, R3 represents an alkyl group having 1 to 4 C atoms or an alkoxyalkyl group having a total number of C atoms of 2 to 4, m represents 0, 1 or 2 and n represents 1, 3 or 4, by reacting alkali metal meth-acrylates or acrylates with haloalkylsilanes of the general formula II             (II) in which R2, R3, m and n are as defined above and Hal represents chlorine or bromine.  The process is carried out at a temperature of from 80 to 150°C in the presence of quaternary pyridinium halides as a phase transfer catalyst.  Because of the use of the pyridinium salts as phase transfer catalysts, the reaction rate is consideraly increased and the reaction temperature and time considerably reduced, compared with the similar known processes.
Patent CA-2055185-A1 (CA)
Title: Low temperature process for the preparation of isopropenyl-alpha, alpha-dimethyl-benzyl isocyanate - grafted latexes
Inventor: LUCAS HOWARD R
IPC: C08F291/00
Filed: 1991-11-08
Abstract: 31,390-00 A LOW TEMPERATURE PROCESS FOR THE PREPARATION OF ISOPROPENYL-ALPHA,ALPHA-DIMETHYLBENZYL      ISOCYANATE - GRAFTED LATEXES              ABSTRACT OF DISCLOSURE A  process  for  the  preparation  of  novel grafted latexes having backbones formed from unsaturat-ed monomers and having pendent isocyanate containing sidechains  derived  from  isopropenyl-alpha,   alpha-dimethylbenzyl  isocyanate  or  copolymers  thereof  is described. Grafting latexes is carried out using a free radical redox initiator system in an aqueous medium. Latexes such as polybutadiene, polyvinyl chloride, and polyvinyl chloride-acrylic copolymers are converted to the corresponding isocyanate-functional latexes by the process of the invention.   The  isocyanate-functional grafted and cografted latexes described are useful in curable compositions.
Patent CA-2055956-A1 (CA)
Title: Liquid ring pumps having rotating lobe liners with end walls
Inventor: HAAVIK HAROLD K
IPC: F04C19/00
Filed: 1991-11-21
Abstract: Abstract of the Disclosure In a liquid ring pump having a rotating liner inside a stationary housing for helping to reduce fluid friction losses, at least one end, and preferably both ends of the liner are partly closed to more completely contain the liquid ring in order to further reduce fluid friction losses.
Patent CA-2057703-A1 (CA)
Title: Method of restoring contaminated solids using ion exchange powder contact
Inventor: GRANT DAVID C
IPC: B09C1/02
Filed: 1991-12-16
Abstract: 55,244 ABSTRACT OF THE DISCLOSURE A  process  for  removing  metal  from  a  solid material includes the steps of admixing the metal contain-ing solid (10) with an aqueous  liquid (26)  and particles of ion exchange material (28) having a strong affinity for metal in a mixer (24),  to  form  a  slurry,  allowing the slurry  materials   to  interact,  and  removing  the  ion exchange material loaded with metal (32) from the solid.
Patent CA-2058032-A1 (CA)
Title: Treatment of polyarylene sulfide resins
Inventor: MUNETO TOSHIHIKO
IPC: C08G75/0213
Filed: 1991-12-18
Abstract: ABSTRACT OF THE DISCLOSURE:       The nuisance metal-corrosive property is effectively lowered by mixing an heating polyarylene sulfide resins with (i) zinc carbonate; (ii) zinc carbonate and an alkaline earth metal chloride; (iii) zinc oxide and/or hydroxide; or (iv) zinc oxide and/or hydroxide, and an alkaline earth metal chloride in the presence of a good solvent for the resins.
Patent CA-2059108-A1 (CA)
Title: Optically transparent, printable labels
Inventor: QUESTEL JOHN M
IPC: G09F3/02
Filed: 1992-01-09
Abstract: An optically transparent label (10) includes a transparent film layer (12) having a water vapor transmission rate of at least 4 grams/mil/100 square inches/24 hours, a transparent-drying adhesive (13) having a high percentage of solids and a printed image (14) visible through the transparent label. An adhesive compound from an emulsion blend including from about 25 to about 75 percent by weight of a vinyl acetate and ethylene copolymer and from about 25 to about 75 percent by weight of a functionalized vinyl acetate. A method of providing a container (15) with a transparent label (10), a printed container (15) and a stack of static electricity buildup-inhibiting labels are also provided.
Patent CA-2059194-A1 (CA)
Title: Remediation methods for toxic materials
Inventor: HUME FRANK C
IPC: C02F11/02
Filed: 1992-01-10
Abstract: ABSTRACT OF THE DISCLOSURE    Remediation of toxic waste materials in solid, liquid or a mixture of solid and liquid form provides rapid reduction of the toxic conditions to innocuous levels.  The process utilizes indigenous microorganisms present in the waste materials.  The process comprises contact mixing waste materials with protein nutrients in water, air entraining the waste materials and protein nutrients during mixing to form a bioactive structure, and exposing the bioactive structure to cure in air until the toxic materials are remediated to a predetermined innocuous level.
Patent CA-2064597-A1 (CA)
Title: Barrier fabrics and methods of making same
Inventor: TAYLOR JEFFREY L
IPC: A61B46/00
Filed: 1992-04-01
Abstract: A liquid impermeable barrier fabric which resists penetration of liquids under finite hydraulic heads and maintains that capable after upwards of 75 institutional washing/sterilization cycles. The barrier fabric is structurally characterized by a silicone membrane attached to a fabric substrate. The substrate is a tightly woven fabric which is constructed of polyester yarns.   Attachment of the membrane to the fabric substrate by a bonding mechanism in which the silicone material is in intimate contact with a substantial portion of the looped portions of the yarn, which define the surface of the fabric. This bonding mechanism also includes hydrophilicity of the yarn surfaces with which the silicone is in intimate contact. The fabric is treated with a hydrophilic finish to provide this aspect of the bonding mechanism. This barrier fabric is provided through the use of coating/calendaring apparatus. A film of highly viscous, uncured silicone is formed with a Mooney viscosity of 45 and then pressed between rollers, into a fabric web; to attain the referenced intimate contact.  The silicone is then cured.
Patent CA-2065150-A1 (CA)
Title: Inhibiteurs de la thrombine
Inventor: MARAGANORE JOHN M
IPC: A61L33/00
Filed: 1990-08-17
Abstract: Cette invention concerne de nouvelles molécules biologiquement actives qui se lient à la thrombine et l'inhibent. Plus particulièrement, ces molécules se caractérisent par une fraction d'associations anion de thrombine-exosite de liaison (ABEAM); une portion de liaison d'au moins 18Å de longueur; et une fraction orientée sur le site catalytique de la thrombine (CSDM). Cette invention concerne également des compositions, des combinaisons et des procédés qui utilisent ces molécules à des fins thérapeutiques, prophylactiques et diagnostiques.
Patent CA-2066002-A1 (CA)
Inventor: FUKUZAWA TADASHI
IPC: H01L29/06
Filed: 1992-04-14
Abstract: Disclosed  is  a  new  method  suitable  for  making  highly integrated quantum wire  arrays,  quantum dot arrays  in a single crystal compound semiconductor and FETs of less than 0.1 micron gate length.  This makes it possible to construct a high-performance electronic device with high speed and low power     consumption,     using     a     combination     of low-temperature-growth molecular beam epitaxy (LTG-MBE) and focused  ion  beam   (FIB)   implantation.    The   compound semiconductor  (GaAs)  epitaxial  layers,  which are made by LTG-MBE, are used as targets of Ga FIB implantation to make Ga  wire   or  dot   arrays.    Precipitation  of   arsenic microcrystals,  which  are  initially embedded  in  a  single crystal  GaAs  layer  and  act  as  Schottky  barriers,  are typically  observed  in  an  LTG  GaAs  layer.   A  thermal annealing process,  after implantation, changes the arsenic microcrystals to GaAs crystals if the arsenic microcrystals are in the region in which the Ga ions are implanted.  A wire-like shape free of As microcrystals then acts as a quantum wire for electrons or holes whereas a dot-like shape free  of  As  microcrystals  acts  as  a  quantum  dot.   The co-existence of Ga ions  and dopant ions,  which provides conductivity type carriers opposite to the conductivity type of the majority carriers of a channel region of an FET, provides the fabrication of very narrow junction gate region for any FET.
Patent CA-2067426-A1 (CA)
Title: Membrane bound probes
Inventor: KAWASAKI ERNEST S
IPC: C12Q1/68
Filed: 1992-04-28
Abstract: Abstract The invention relates an oligonucleotide probe reagent consisting of a nylon membrane with a high density of anionic carboxyl groups to which membrane at least one oligonucleotide probe containing a 5' amine is covalently bound via an amide bond and to a method for attachment of the oligonucleotide probe to the nylon membrane. The single, 5' end attachment of the oligonucleotides to the membrane surface leaves the probe free to interact with complementary sequences, thus increasing the hybridization efficiency relative to probes attached by methods in which heat or ultraviolet light is used for immobilization. The simplicity and reproducibility of this method and the sensitivity attained when using the reagents produced by the method are ideal for application of the method and reagents to the diagnosis of infectious and genetic diseases, the analysis of mutations in neoplasias, performance of HLA typing, and other areas.