baber/WOPTO huggingface dataset:
Patent CA-2019894-A1 (CA)
Title: Mine convergence monitor
Inventor: LUCAS JOHN M
IPC: G01B9/00
Filed: 1990-06-26
Abstract: Abstract of the Disclosure:      A mine convergence monitor comprises an optical head mounted at a fixed point on a mine wall, a target reflector attached to a wall facing the optical head and adapted to reflect a light beam lanched from the optical head towards the target reflector, an optical time domain reflectometer for measuring the time taken by the light beam to return to the optical head, and means for deriving the distance between the optical head and the reflector from such time and for deriving convergence by substracting such distance from a previously derived distance.
Patent CA-2019963-A1 (CA)
Title: Inert ceramic catalyst bed supports
Inventor: CRABTREE ROBERT
IPC: C04B33/04
Filed: 1990-06-27
Abstract: Catalyst   bed   supports   having   improved   performance characteristics are prepared from a mixture of a clay and a feldspathic sand.
Patent CA-2021473-A1 (CA)
Title: A method of preparing an implant body for implantation
Inventor: BJURSTEN LARS-MAGNUS
IPC: A61L27/06
Filed: 1990-07-18
Abstract: A method of preparing an implant body in order to optimize the healing time of said implant, comprising bringing the implant body for a limited period of time into contact with a hydrogen peroxide solution at least on the surfaces intended to come into contact with. surrounding tissue when implanted, the treated surfaces being cleaned by rinsing. The treatment of the implant surface with hydrogen peroxide can be supplemented with incorporation of biomolecules, such as peptides, proteins and steroids, and also other substances such as inorganic ions and crystals. The compounds to be coupled to the implant surface may promote the healing and/or binding of the surrounding tissue.
Patent CA-2022453-A1 (CA)
Title: Lock and control assembly for a vehicle tailgate
IPC: E05B65/12
Filed: 1990-08-01
Abstract: G-2,174 LOCK AND CONTROL ASSEMBLY FOR A VEHICLE TAILGATE Abstract of the Disclosure The disclosure involves a lock and control assembly which can be either manually operated after insertion of a key in a lock cylinder or electrically energized by a switch from a remote location so that it can be thereafter manually manipulated without insertion of the key in the lock cylinder.  the lock and control assembly also includes a mechanical override means to enable it to be actuated to its locked position, but not its unlocked position, in the event of an electrical power failure or a failure in the energizable means.
Patent CA-2024636-A1 (CA)
IPC: C11D3/10
Filed: 1990-09-05
Abstract: A water based cleaning composition suitable for use in tape  drives  including  very  small  quantities  of  a surfactant,  preferably  a  tridecyl  alcohol  ether  of polyoxyethylene,  and  an  ionic  salt  of  ammonia  is disclosed.  The quantity of surfactant is such that it is totally water soluble and furthermore does not exist as a free solvent susceptible to evaporation into the environ? ment.   The combination of the surfactant and an ionic salt of ammonia, preferably ammonium carbonate, enhances detergency and the suspension of debris without leaving a residue.   In  addition,  the  ionic  salt  of  ammonia  is provided in a quantity which maintains  a neutral pH, thereby  minimizing  the  corrosiveness  of  the  cleaning composition and eliminating static.
Patent CA-2024713-A1 (CA)
Inventor: LABAT YVES
IPC: C07B61/00
Filed: 1990-09-06
Abstract: Manufacture of esters of mercaptocarboxylic acids and of alcohols forming an azeotrope with water. 
<??>The esterification is carried out continuously in the presence of excess alcohol and the water formed is removed by azeotropic entrainment under vacuum at a temperature such that the concentration of residual water in the reaction mixture remains constantly lower than 0.5% by weight. 
<??>The process according to the invention applies more particularly to the synthesis of octyl esters of thioglycolic acid.
Patent CA-2024945-A1 (CA)
Inventor: MATSUOKA SAIJI
IPC: C21D8/04
Filed: 1990-09-10
Abstract: ABSTRACT OF THE DISCLOSURE    A cold-rolled steel sheet suitable for deep drawing has a composition containing up to about 0.005 wt% of C, up to about 0.1 wt% of Si, up to about 1.0 wt% of Mn, up to about 0.1 wt% of P, up to about 0.05 wt% of S, about 0.01 to 0.10 wt% of A?, up to about 0.005 wt% of N, one, two or more elements selected from the group consisting of about 0.01 to 0.15 wt% of Ti, about 0.001 to 0.05 wt% of Nb and about 0.0001 to 0.0020 wt% of 8, and the balance substantially Fe and incidental impurities.  The steel sheet exhibits a Lankford value (r-value) of about ? ? 2.8 and also exhibits the difference (rmax - rmin) between the maximum value rmax and the minimum value rmin satisfying the condition of (rmax - rmin) ? about 0.5.  The steel sheet is produced by a process having the steps of: conducting hot-rolling on the steel material of the above-described composition; conducting a primary cold rolling at a rolling reduction not smaller than about 30%; conducting intermediate annealing at a temperature ranging between the recrystallization temperature and about 920°; conducting secondary cold rolling at a rolling reduction not smaller than about 30% so as to provide a total rolling reduction not smaller than about 78%; and conducting final annealing at a temperature which is between the recrystallization temperature and about 920°C.
Patent CA-2025328-A1 (CA)
Title: Mechanically controlled fuel/air mixture injection system
Inventor: POEHLMAN ARTHUR G
IPC: F02D3/00
Filed: 1990-09-13
Abstract: ABSTRACT OF DISCLOSURE               Disclosed herein is a mechanical fuel supply apparatus for a fuel injected internal combustion engine, which apparatus comprises a compressor for compressing a fuel/air mixture, a pressure regulator for controlling the pressure of the fuel/air mixture, and a controller-distributor for varying the supply of pressurized fuel/air mixture to the engine in accordance with engine speed and in accordance with operator input.
Patent CA-2029388-A1 (CA)
Title: Process for the preparation of heme/hemin
Inventor: LUNDELL RALF O
IPC: C07F15/02
Filed: 1990-11-06
Abstract: ABSTRACT The present invention relates to a process for the preparation of heme and/or hemin by extraction using a solvent of heme/he-min containing material, such as blood, haemoglobin, or heme/-hemin sources, wherein one utilizes, as a solvent, a solvent which has a considerably greater solubility to heme/hemin at an elevated temperature than at a lower temperature, and which solvent is liquid at the extraction and crystallization tempe-ratures, and that the extraction is carried out at an acid or neutral pH, whereby preferably lower alkyl esters of formic acid, acetic acid, acetoacetic acid, 2-hydroxypropionic acid, 2-oxopropionic acid, malonic acid, maleic acid, malic acid and fumaric acid are used, the alkyl groups of the ester parts hav-ing 1 to 5 carbon atoms.
Patent CA-2029438-A1 (CA)
Title: Process for electrolytically treating aluminium and aluminium alloys
Inventor: PATEL PINAKIN
IPC: C25D11/06
Filed: 1990-11-07
Abstract: A process for providing a variety of light to medium colours of anodised aluminium or aluminium alloys which comprises the steps of anodising an aluminium or aluminium alloy workpiece in an aqueous strong acid electrolyte solution by application of direct current to form on the workpiece a porous anodic oxide film having a thickness of at least about 3 microns; subjecting the resulting anodised workpiece to alternating current in an aqueous strong acid electrolyte solution comprising an organic carboxylic acid containing at least one reactive group bound to the carbon atom in the alpha-position; and electrolyti-cally colouring the workpiece. In a preferred embodiment resulting in deepened colour tones, including those in the blue to blue-gray range, one or more currentless "waiting periods" are maintained at various stages of the process. In another embodiment, improved colour uniform-ity is obtained by subjecting the workpiece prior to electrolytic colouring to a direct current pre-treatment step.      The resulting electrolytically coloured aluminium or aluminium alloy is particularly useful for architectural product.
Patent CA-2030962-A1 (CA)
Title: Improvements relating to the administration of pharmaceutical agents
Inventor: BAILEY DAVID G
IPC: A61K31/44
Filed: 1990-11-27
Abstract: The bioavailability of pharmaceutical agents susceptible to oxidation by cytochrome P-450, particularly anti-hypertensive dihydropyridines such as felodopine or nifedipine can be increased by administering, before, during or after the administration of the pharmaceutical agent, a flavonoid in the aglucone or glycoside form. This conjoint administration has the effect of prolonging the bioavailability of and so reducing the amount of pharmaceutical agent that needs to be administered.      Grapefruit juice has been found to be a suitable source of the flavonoid.
Patent CA-2031246-A1 (CA)
Inventor: FUCHS HARALD
IPC: C07K17/02
Filed: 1990-11-30
Abstract: Abstract of the Disclosure:  Two-dimensionally crystall-ized macromolecular films are built up with the aid of a lipid monofilm carrying biotin units.
Patent CA-2033673-A1 (CA)
Title: Fibre-optic apparatus for the photodynamic treatment of tumours
Inventor: WAGNIERES GEORGES
IPC: A61B18/20
Filed: 1991-01-07
Abstract: A bronchoscope has a fibre-optic apparatus for the photodynamic treatment of tumours in the region of the furcate branches of the bronchi, the divergent pencil of rays (13), which emerges from the end face (4) of an optical fibre, striking a lens arrangement consisting of two microlenses (14, 15) which, owing to the spherical aberration, deflect edge rays (23) in the divergent pencil of rays (13) of the optical fibre (8) in such a manner that a homogeneous sharp-edged emerging pencil of rays is formed.
Patent CA-2037023-A1 (CA)
Title: Spiroid braided suture
Inventor: CHESTERFIELD MICHAEL P
IPC: A61L17/04
Filed: 1991-02-25
Abstract: A suture is provided with a substantially solid spiroid braid construction. The suture exhibits greater flexibility, better hard and less chatter and drag than tubular braided sutures of known construction.
Patent CA-2042264-A1 (CA)
Title: Niobium and chromium containing titanium aluminide rendered castable by boron inoculations
Inventor: HUANG SHYH-CHIN
IPC: C22C14/00
Filed: 1991-05-09
Abstract: A method for providing improved castability in a gamma titanium aluminide is taught. The method involves adding inclusions of boron to the titanium aluminide containing chromium and niobium. Boron additions are made in concentrations between 0.5 and 2 atomic percent. Fine grain equiaxed microstructure is found from solidified melt. Prop-erty improvements are also achieved.
Patent CA-2042367-A1 (CA)
Inventor: STRAUCH THOMAS
IPC: B29C65/34
Filed: 1990-09-13
Abstract: ABSTRACT OF THE DISCLOSURE:         A welding muff comprises a thermoplastic, tubular muff body (1) which has a heating wire winding on its inner surface.  A reinforcing layer connected to the muff body (1) by interpenetration of the material or by interlocking has a high rigidity which ensures that the welding pressure is absorbed during welding and the service life is prolonged.
Patent CA-2043973-A1 (CA)
Title: Copolyester of branched polyacetal for sliding member
Inventor: SASAKI KATSUSHI
IPC: C08G16/00
Filed: 1991-06-05
Abstract: Abstract A copolymer of branched polyacetal for sliding member, which is obtained by polymerizing (A) 99.88 to 85.0 percent by weight of trioxane, (B) 0.1 to 10 percent by weight of a comonomer of a cyclic ether compound and/or a cyclic formal, such as ethylene oxide, dioxolan, trioxepane, and 1,4-butanediol formal, and (C) 0.02 to 5 percent by weight of diglycidyl compound such as an alkylenoxide diglycidylether.  The polymerization may be effected in the presence of an acetal compound having a low molecular weight, defined by the formula: RlO-(CH2O)nR2 in which Rl and R2 are independently an alkyl having 1 to 5 carbon atoms and n is 1 to 10.  The copolymer is improved in resistance to abrasion and useful for sliding parts.  (B) may be defined by the following formula:
Patent CA-2044196-A1 (CA)
Inventor: MASSICOTTE LEOPOLD
IPC: A47G27/04
Filed: 1991-06-10
Abstract: CARPET STRETCHER             ABSTRACT OF THE DISCLOSURE            A power operated carpet stretcher comprising a frame having a bottom surface provided with prong members positioned and sized to grasp a carpet.   A hook is slidably mounted on the frame to engage a slat fixed to the floor adjacent a wall edge.  The hook is operatively connected to a power jack in such a manner that, upon actuation of the power jack,  the frame is pulled toward the slat engaged by the hook thereby causing the carpet to be pulled by the prong members toward the adjacent wall edge.  A method of installing a carpet with this stretcher is also disclosed.
Patent CA-2047308-A1 (CA)
Inventor: MAKINO MASAAKI
IPC: H04L7/00
Filed: 1991-07-17
Abstract: A demodulating apparatus comprises a frequency detector for performing a frequency-detection on a digi-tal modulation signal to acquire a detection signal, a clock generator for generating a clock signal, and a discrimination circuit for sampling a voltage level of the detection signal from the frequency detector at a clock timing of the clock signal from the clock genera-tor, and converting the sampled voltage level into digi-tal data, which is set to have one of first and second logic values on the basis of a reference voltage LDC.       Particularly, the discrimination circuit includes a control circuit for comparing the voltage level En sampled at a clock timing, voltage level En-1 sampled at a timing one clock earlier than En and voltage level En-2 sampled at a timing two clock earlier than En, with first and second threshold voltages LA and LB respec-tively higher and lower than the reference voltage LDC, and controlling the clock generator to synchronize the phase of the clock signal with the detection signal when it is detected from the comparison that anyone of first and second conditions is satisfied where the first con-dition is En-2 < LB, LB ? En-1 ? LA and LA < En, and the second condition is LA < En-2, LB ? En-1 ? LA and En < LB.
Patent CA-2047460-A1 (CA)
Inventor: HELGESEN GARY D
IPC: F16D1/064
Filed: 1991-07-19
Abstract: Abstract of the Invention A balanced rotary assembly is disclosed having an axis of rotation, comprising: (a) an aluminum-based driveshaft; (b) at least one cast aluminum-based connector having its weight substantially equally divided on opposite sides of the axis and coaxially secured to the driveshaft; (c) a uniformly thick iron-based band embedded in the outer surface of the connector and having means for locking the band against relative rotation with the connector; and (d) one or more iron-based members welded to the band to bring the assembly into a desired rotationally balanced condition.         A method of rotationally balancing an assembly about an axis of rotation is also disclosed, comprising: (a) casting an aluminum-based connector with an iron-based band implanted therein to expose a peripheral surface thereof; (b) attaching one or more of the connectors each coaxially to an end of an aluminum-based tubular driveshaft; and (c) welding iron-based masses to the exposed surface of the band to bring the connector and driveshaft to a rotationally balanced condition.
Patent CA-2048355-A1 (CA)
Title: P-oxybenzoic acid derivatives, process for the preparation thereof and use thereof as drug
Inventor: REITER FRIEDEMANN
IPC: C07D317/24
Filed: 1991-08-02
Abstract: p-oxybenzoic acid derivatives of the general formula (1) (1)                wherein:   R1   =     ,        or      and R2 = -OH ,   or           , where in the case of R1  =     R2 =        or     and in the case of R1 =       or   R2 = -011 their physiologically compatible salts and their enantiomeric and diastereomeric forms have hypolipemic properties and are therefore suitable for the preparation of drugs with hypolipemic action.
Patent CA-2048934-A1 (CA)
Title: Synthetic lubricant base stocks from long-chain vinylidene olefins and long-chain alpha-and/or internal olefins
Inventor: SANDERSON JOHN R
IPC: C07C2/22
Filed: 1991-08-12
Abstract: ABSTRACT (D# 81, 006-F) A process is disclosed for preparing synthetic lubricant base stocks.  Synthetic lubricant base stocks may be prepared in good yield by oligomerizing long-chain olefins using certain acidic calcium montmorillonite clay catalysts. When long-chain vinylidene olefin  and  long-chain  alpha-  and/or  internal-olefin  are  co-oligomerized, a synthetic lubricant base stock having a lower pour point is obtained.
Patent CA-2049366-A1 (CA)
Inventor: NAKANO YUKIO
IPC: H04L12/947
Filed: 1991-08-16
Abstract: An ATN switch including ECC encoder circuits each for generating, for an ATM cell as an information symbol, an ECC check symbol and for adding the ECC check symbol thereto, cell partitioning circuits each for subdividing an information field of an ATM cell into N partial cells, for subdividing a check symbol field into M partial cells, and for assigning an identical routing tag to the obtained partial cells (N + M) partial cell switches for respectively routing the (N + M) partial cells in an independent fashion based on the routing tag, and ECC decoder circuits for receiving the (N + M) partial cells thus routed and for achieving an error correction on the received partial cells.
Patent CA-2050314-A1 (CA)
Title: Perforated window coverings
Inventor: DUNN WILLIAM F
IPC: E06B9/386
Filed: 1990-01-12
Abstract: Light admitting window coverings are provided with apertures (36, 38) which are formed in a covering such as a vertical blind louver (18). The louver is formed of opposed panel portions with a transparent film or sheet sandwiched therebetween to provide for sufficient light transmission and visibility through the louvers in the closed position but without permitting convective heat transmission through the window covering. The blind louvers may be formed with an insulating air space (64, 66) between the opposed louver panel portions and the transparent film or sheet. The blind louvers or single panel apertured blind louvers and the like may be formed with apertures at an acute angle extending downward towards the airspace formed between a windowpane and the window covering to minimze convective air flow from the room interior into the space between the window and the blind louver when the room temperature exceeds the outside ambient temperature and to prevent heat buildup in the space between the window coverings and the windowpane when the temperature in the room interior air space is less than the temperature in the airspace between the window covering and the windowpane.
Patent CA-2050450-A1 (CA)
Title: Reactive particulate resin, method for producing the same, and resin composition for thermoforming
Inventor: ASANAKA YASUMASA
IPC: C08F291/00
Filed: 1991-08-30
Abstract: Abstract of the Disclosure Disclosed herein is a reactive particulate resin char-acterized in that each particle consists of a core of three-dimensionally crosslinked resin having a degree of cross-linking from 0.05 to 2.0 mmol/g, and a shell formed thereon having a radical-polymerizable ethylenic unsaturated bond, said shell being one which is formed by polymerization of one or more polyfunctional monomers (A) and one or more non-aromatic radical-polymerizable monomers (B), said polyfunc-tional monomer (A) having in the molecule at least one of at least one species of 1-monosubstituted and 1,1-disubstituted radical-polymerizable ethylenic unsaturated bonds  (a)  and also having in the molecule at least one of at least one species  of  1,2-disubstituted,  1,1,2-trisubstituted,  and 1,1,2,2-tetrasubstituted  radical-polymerizable  ethylenic unsaturated bonds (b).  Disclosed also herein is a thermo-setting  resin  composition  for  thermoforming  which  is composed of a thermosetting resin, an inorganic filler, and said reactive particulate resin.
Patent CA-2052156-A1 (CA)
Title: Liquid coating agent
Inventor: BRINDOEPKE GERHARD
IPC: C08G59/14
Filed: 1991-09-24
Abstract: 90/F 312                                13 November 1990 WLG-Dr.Ot.-ui Abstract of the disclosure: Liquid coating agent Liquid  coating  agent  based  on  a  polymer containing acetoacetate groups and a polyamine in the form of the corresponding aldimine or ketimine, the polymer contain-ing acetoacetate groups being obtained by reaction of a polyepoxide with water, an amine or a hydroxycarboxylic acid and subsquent esterification or transesterification with acetoacetic acid. These liquid coating agents are particularly suitable as binders in two-component auto-mobile repair fillers or as two-component primers.
Patent CA-2052491-A1 (CA)
Title: Load transferring device
Inventor: WYNYARD ROBIN E
IPC: B60P1/54
Filed: 1991-09-30
Abstract: LOAD TRANSFERRING DEVICE     ABSTRACT   The invention relates to a load transferring device for loading and unloading load units to or from a load transporting vehicle, and more particularly to a load transferring device mountable on the load transporting vehicle. In a broad aspect the invention provides a load transferring device comprising at least one load transferring unit, each of which has an extendible stabiliser leg assembly pivotably mountable to a load transporting vehicle with each stabiliser leg assembly terminating in a foot member, each load transferring unit further having a jib assembly pivotably mounted on the stabiliser leg assembly between the foot member and the point at which each stabiliser leg assembly can be pivotably mounted to the load transporting vehicle, each jib assembly including an attachment means to attach the jib assembly to a load to be transferred, and an extendible force transmitting element acting between the jib assembly and the stabiliser leg assembly to rotate the jib assembly about the jib assembly mounting pivot.
Patent CA-2052698-A1 (CA)
Title: Treatment of peptic ulcer
Inventor: BERLIN ROGER G
IPC: A61K33/24
Filed: 1991-10-03
Abstract: TITLE OF THE INVENTION TREATMENT OF PEPTIC ULCER         ABSTRACT OF THE DISCLOSURE         Peptic ulcer disease is treated with a combination therapy of famotidine or omeprazole plus a bismuth salt.
Patent CA-2052827-A1 (CA)
Title: Increased production of thermus aquaticus dna polymerase in e.coli
Inventor: SULLIVAN MARK A
IPC: C12N9/10
Filed: 1991-10-04
Abstract: INCREASED PRODUCTION OF THERMUS  AOUATICUS         DNA POLYMERASE IN E. COLI Abstract of the Disclosure The  hermus aquaticus gene encoding a thermostable DNA polymerase (Taq Pol) is altered in the N-terminus-encoding region to provide mutant genes with improved expression in E. coli.
Patent CA-2056500-A1 (CA)
Title: Polyetherimide/epoxy chopped fiber reinforced laminates and the preparation thereof
Inventor: MINNICK MICHAEL G
IPC: C08G59/00
Filed: 1991-11-28
Abstract: POLYETHERIMIDE/EPOXY CHOPPED FIBER REINFORCED    LAMINATES AND THE PREPARATION THEREOF .                               ABSTRACT OF THE DISCLOSURE   The present invention is directed to a method for making a chopped fiber-reinforced composite. The method comprises dispersing a polyamide acid/epoxy blend and greater than 50 wt-% chopped fiber in an aerated surfactant foam. The foam is deposited on a foraminous layer and collapsed to form a web. The web is consolidated at a temperature of greater than about 280°C and a pressure of greater than about 500 psi. The resulting composite typically has a flexural modulus of greater than 2,000 ksi and flexural strength values of greater than about 30,000 psi and typically between about 30,000 and 50,000 psi. The composite should find use in applications requiring effective high mechanical stiffness and strength, and flame resistance.   jp