baber/WOPTO huggingface dataset:
Patent CA-2018943-A1 (CA)
Inventor: SMITH ROBERT S
IPC: B01J23/04
Filed: 1990-06-13
Abstract: A normal 1-alkene containing 3-8 carbons is coupled with itself, another such alkene, or ethane in the presence of a supported alkali metal as a catalyst and 10-100 mol %, based on the amount of alkali metal catalyst, of an alkali metal hydroxide as a co-catalyst; the support being a silica having a surface area riot greater than 5 m2/g.      In preferred embodiments of the invention, the alkene is propane or a mixture of propane and ethane, the alkali metal is potassium or a potassium alloy, and the co-catalyst is potassium hydroxide.
Patent CA-2020446-A1 (CA)
Title: Ornamental wheel hub cap
Inventor: DUBOST DOMINIQUE
IPC: B60B7/04
Filed: 1990-07-04
Abstract: ABSTRACT OF THE DISCLOSURE An ornamental wheel hub cap adapted to be secured onto the wheel rim of a vehicle through the medium of a resiliently deformable ring split to form two free ends connected together by a spring-like wire allowing the radial deformation of the ring whereas a strap is made into one piece of material or moulded at its two ends integrally with the free ends of the ring so as to exert upon the latter a prestress against the force exerted by the wire spring.
Patent CA-2021286-A1 (CA)
Title: Polyester molding compositions having unexpected reduced water absorption properties
Inventor: GOLDER MICHAEL D
IPC: C08L67/02
Filed: 1990-07-16
Abstract: ABSTRACT      Novel polyester molding compositions are disclosed which exhibit unexpected water absorption properties.  The compositions of the invention include a polyester base resin (which preferably is a linear poly(alkylene) terephthalate, e.g., poly(butylene) terephthalate, or a copolyester elastomer having long chain ester units derived from corresponding long chain glycols of molecular weight 600-6000 and a carbon to oxygen ratio of greater than 2.5), and a copolyester elastomer having a multiplicity of long and short chain ester units, wherein the long chain ester units are derived from corresponding long chain glycols of molecular weight 400-3500 and a carbon to oxygen ratio of between about 2.0 to 2.4.  Since the polyester molding compositions of this invention exhibit less water absorption, they may satisfactorily be employed to form parts where low swelling is a desireable physical attribute (e.g., as movable parts of a component having critical spatial tolerances).
Patent CA-2022997-A1 (CA)
Title: Multigrade synthetic hydrocarbon engine oils
Inventor: BEIMESCH BRUCE J
IPC: C10M105/00
Filed: 1990-08-09
Abstract: ABSTRACT OF THE DISCLOSURE           Non-polymer thickened multigrade engine oils based on synthetic basestocks are provided.  The SAE- 5W-30, SAE 10W-30 and SAE 15W-40 engine oils are derived from hydrogenated decene-1 oligomer mixtures wherein the oligomers range from C30 up to C70+ and are present in specified proportions.  Synthetic esters may be combined with the polyalphaolefin oligomer mixture.  The synthetic basestocks are formulated with appropriate performance additives to obtain engine oils which meet the desired API Service Requirements for gasoline and/or diesel engine usage.  In addition to specified oligomer distributions, the polyalphaolefins have specified viscosities, molecular weights and branching.
Patent CA-2024697-A1 (CA)
Title: Protein having anticoagulant properties
Inventor: VLASUK GEORGE P
IPC: C12N9/99
Filed: 1990-09-05
Abstract: TITLE OF THE INVENTION PROTEINS HAVING ANTICOAGULANT PROPERTIES     ABSTRACT OF THE DISCLOSURE         Proteins which specifically inhibit coagula-tion Factor Xa.  The inhibitors, which do not inhibit Factor VIIa, kallikrein, trypsin, chymotrypsin, thrombin, urokinase, tissue plasminogen activator, plasmin, elastase, Factor XIa or S. aureus V8 protease, are polypeptides of 60 amino acid residues.  The inhibitors may be purified from Ornithodoros moubata extract, synthesized, or produced using a recombinant DNA yeast expression system.
Patent CA-2025153-A1 (CA)
Title: Process for continuously determining the thickness of the liquid slag on the surface of a bath of molten metal in a metallurgical container
Inventor: KRAUSENER GILBERT
IPC: B22D37/00
Filed: 1990-09-12
Abstract: ABSTRACT         Title: Process for continuously determining the thick-ness of the liquid slag on the surface of a bath of molten metal in a metallurgical container.         According to this process: a) the position in respect of height of the "molten metal (2)/liquid  slag  (3)"  interface  (M)  is  continuously determined, b)  the position of an isotherm (IS)  located at the "liquid slag (3)/powder layer (4)"  interface is con-tinuously determined by automatically controlling the position of a thermocouple (8) on this isotherm and by measuring the displacements of this thermocouple, c) and, by comparing the position in respect of height of the molten metal/liquid slag interface  (M)  with the position in respect of height of the isotherm (IS), the thickness and thus the variations in thickness of the liquid slag are continuously deduced.            Fig. 1
Patent CA-2027662-A1 (CA)
Title: Combined assembly to straighten and linearise sections
Inventor: DEL FABRO GIORGIO
IPC: B21D3/02
Filed: 1990-10-15
Abstract: ABSTRACT  Combined assembly to straighten and linearise sections (11),  which have a solid or hollow cross section and may include  externally  a  round  or  ribbed  surface,  or projections,  or helicoidal TOR ribs,  or a three-lobed or cross-shaped  or  star-shaped  cross  section,  etc.,  the sections being in the form of bars or wound bundles  (12), the assembly comprising, in positions lying substantially on the  same plane,  a  first  straightening unit  (20)  having immediately upstream and immediately downstream respectively an inlet feeder unit  (14) and an outlet feeder unit  (21), and comprising also a second straightening unit (23) having downstream an orthogonal regulation unit (24) followed by a contrast  unit  (27),  the  second straightening unit  (23) being positioned on a path of the  sections  (11)  which includes an S-shaped or Z-shaped bend (22).
Patent CA-2031522-A1 (CA)
Inventor: MIRIPOL JEFFREY E
IPC: A61L2/00
Filed: 1990-01-17
Abstract: Une fine pellicule (10) ou couche (10) de leucocytes, telles que les leucocytes contaminants présents dans un concentré plaquettaire, est exposé à un rayonnement ultraviolet dont la longueur d'onde se situe principalement entre 280 et 320 nanomètres, et à une intensité atteignant préférablement de 4 à 20 milliwatts par centimètre carré, afin d'entraîner une exposition à une intensité énergétique totale qui est habituellement de 800 à 200 000 millijoules par centimètre carré de rayonnement ultraviolet. Les leucocytes ayant subi un tel traitement perdent dans une large mesure leur capacité d'induire une réaction immunitaire chez un patient ayant subi une allo-immunisation. Les leucocytes seront de préférence placés sous forme d'une telle pellicule dans un sac plat (10), souple (10) fait de plastique d'acétate de polyéthylènevinyle; le sac plat (10) et souple (10) est étiré dans un sens correspondant au parcours du rayonnement ultraviolet. Des dispositifs irradiants nouveaux sont également décrits.
Patent CA-2033664-A1 (CA)
Title: Bale density monitoring apparatus and method
Inventor: LEE CURTIS M
IPC: A01F15/08
Filed: 1991-01-07
Abstract: Abstract of the Disclosure An apparatus and method for monitoring bale density in a round baler.  A pair of hydraulic cylinders are operable to move a movable portion of the baler between its open and closed position.  The bale density monitoring apparatus of the invention monitors pressure on the cylinders during bale formation.  Upon sensing a differential in pressure between the cylinders, a signal is provided to the operator so that the tractor can be moved relative to the windrow to equalize pressure within the bale-forming chamber.
Patent CA-2034929-A1 (CA)
Title: Preparation of 2-(2'-thienyl)alkylamines and derivatives thereof and synthesis of 4,5,6,7-thieno[3,2-c]pyridine derivatives therefrom
Inventor: KHATRI HIRALAL N
IPC: B01J27/232
Filed: 1991-01-25
Abstract: ABSTRACT OF THE DISCLOSURE      An improved process for the synthesis of 2-(2'-thienyl)ethylamine from suitably functionalized derivatives of 2-(2'-thienyl)ethanol employing ammonia gas in the presence of a metal salt or liquid ammonia and alkyl ketone as a solvent.  The 2-(2'-thienyl)ethylamine produced by this process is advantageously converted to the carbamic acid salt, which is suitably reconverted to 2-(2'-thienyl)ethylamine, a useful intermediate in the synthesis of ticlopidine.
Patent CA-2035961-A1 (CA)
Title: Screw-in lead
Inventor: HESS DOUGLAS N
IPC: A61N1/05
Filed: 1991-02-07
Abstract: SCREW-IN LEAD                           ABSTRACT A cardiac pacing lead for endocardial use, having a pacing electrode which takes the form of a tapered, conical helix extending from the distal end of the lead. The helix is used to attach the distal end of the lead to heart tissue.  The tapered shape of the helix facilitates passage of the lead through the venous system and through the tricuspid valve.  Rotation of the fixation helix is accomplished by means of rotation of a coiled conductor extending the length of the lead, in conjunction with rotation of a stylet, passing down the conductor. The stylet is fixedly mounted with respect to the coiled conductor at both the proximal and distal ends of the lead.
Patent CA-2038109-A1 (CA)
Title: Liquid membrane catalytic scale dissolution method
Inventor: MORRIS RICHARD L
IPC: C02F5/12
Filed: 1991-03-12
Abstract: A liquid membrane method for removing scale deposits wherein a chelating composition is utilized. The composition used in the external and internal aqueous gases of said membrane comprises an aqueous solution having a pH of about 8 to about 14, and a polyaminopolycarboxylic acid chelant. Additionally, a catalyst or synergist is used in the external phase only.      Preferred chelants comprise diethylenetriaminepentaacetic acid (DTPA) or ethylenediaminetetraacetic acid (EDTA), salts, and mixtures thereof. The catalyst used in the external phase comprises a monocarboxylic acid, preferably a substituted acetic acid such as mercaptoacetic acid, hydroxyacetic acid and aminoacetic acid or an aromatic acid such as salicylic acid.      When the solution containing the composition is contacted with a surface containing a scale deposit, the deposit dissolves substantially more scale quicker than heretofore possible.
Patent CA-2041159-A1 (CA)
Title: Process for producing alkyltetrahydroanthrahydroquinones and working solutions containing them for producing hydrogen peroxide by the anthraquinone process
Inventor: SIMON DIETOLF DIPL CHEM DR
IPC: C01B15/023
Filed: 1991-04-24
Abstract: Abstract of the Disclosure A process is disclosed for preparing alkyltetrahydro-anthrahydroquinones in a solvent system suitable for the production of hydrogen peroxide.  The resulting alkyltetra-hydroanthrahydroquinone solutions can be used directly as working solutions for preparing H2O2 by the anthraquinone process.  It is also possible, if desired, to isolate the alkyltetrahydroanthrahydroquinones from the solution, or to oxidize  the  alkyltetrahydroanthrahydroquinones  with  an oxygen-containing gas to the corresponding alkyltetrahydro-anthraquinones, which can then be isolated.
Patent CA-2046359-A1 (CA)
IPC: B65G53/46
Filed: 1991-07-05
Abstract: In a segmented wheel rotary valve, a sealing arrangement is positioned between the side discs of the segmented wheel and the respective adjacent bearing supporting housing covers.  The sealing arrangement includes a plastic filler ring which is positioned in a floating arrangement between each cover and the respective adjacent side disc and is loaded in axial as well as radial direction by an appropriate resilient ring or spring arrangement.  The sealing arrangement experiences relatively reduced wear and thus uneven wear of the sealing rings is substantially prevented.
Patent CA-2049246-A1 (CA)
IPC: E04B1/18
Filed: 1991-08-15
Abstract: The invention is related to structures, elements and methods for joining one end of a tubular member to one end of at least another tubular member, both having an end connector (2) comprising a first portion (4) shaped to be attachable to the end of said tubular member. A second substantially flat portion (12) of the end connector (2) has two opposite edges (14,16) extending in the longitudinal direction of said tubular member. Notch-like recesses (18) are mutually aligned and extend from each of said edges (14,16) in a direction substantially perpendicular thereto. The width of said notch-like recesses (18) is at least equal to the thickness of the second flat portion (12). The distance between the upper and lower edges (14,16) of said second portion (12) exceeds the major outside dimension of the tubular member so that, upon assembly of the tubular members and the end connectors (2), a gap is produced between superjacent tubular members. <IMAGE>
Patent CA-2051501-A1 (CA)
Title: 1-phenyl-3-phenyl-2-propyne-1-ones as calcium uptake inhibitors
Inventor: DINERSTEIN ROBERT J
IPC: A61K31/135
Filed: 1991-09-16
Abstract: This invention relates to 1-phenyl-3-phenyl-2-propyne-1-ones of the formula:    wherein:      R1, R2 and R3 are each independently hydrogen; C1-C6 alkyl; C1-C6 alkoxy; halogen; -N(Y1)(Y2), wherein Y1 and Y2 are each independently hydrogen or C1-C6 alkyl; or X2-(Ar)-(CH2)n-O-, wherein Ar is phenyl or naphthyl, n=0 or 1, X=C1-C6 alkoxy or -N(Y1)(Y2), wherein Y1 and Y2 are as previously defined and Z=0, 1, 2;   or a pharmaceutically acceptable salt thereof, and the use of these compounds as calcium uptake inhibitors in leuko-cytes and thrombocytes, and pharmaceutical compositions containing these compounds as active ingredients, and the process of their preparation.
Patent CA-2051544-A1 (CA)
Title: Extended flexible headbox slice
Inventor: FARRINGTON THEODORE E JR
IPC: D21F9/00
Filed: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE     The uniformity of layered paper sheets produced using a layered headbox can be improved by confining the outer layers between parallel surfaces within the headbox immediately prior to leaving the headbox.
Patent CA-2052399-A1 (CA)
Inventor: RIMMA JOHN
IPC: C09D4/00
Filed: 1991-09-27
Abstract: An  environmentally  friendly  coating  comprises  a vegetable oil which acts as a binder, surfactants which make the coating  water  dispersible,   and  driers  which  institute polymerisation and oxidation of the vegetable oil.  The coating is at least 99% solids.
Patent CA-2056207-A1 (CA)
Title: Process for the fluorination of polymeric resins
Inventor: TARANCON GREGORIO
IPC: B01J8/18
Filed: 1991-11-26
Abstract: Abstract A process for the direct fluorination of polymeric resins in which polymeric material capable of being fluorinated is contacted with elemental fluorine and a dense carrier fluid having a critical temperature higher than ambient temperature, a boiling point lower than ambient temperature minus 60 celcius degrees, and a molecular weight greater than the molecular weight of elemental fluorine.  The dense carrier fluid preferably has a molecular weight in the range of about 40 to about 200.
Patent CA-2058226-A1 (CA)
Title: Instrument and a method for measuring the activity of an enzyme or the activity of an enzymatic reaction-inhibiting substance
Inventor: KOMIYAMA OSAMU
IPC: C12Q1/37
Filed: 1991-12-20
Abstract: An instrument and a method for measuring the activity of an enzyme or the activity of an enzymatic reaction-inhibiting substance An instrument for measuring the activity of an enzyme or the activity of an enzymatic reaction-inhibiting substance, which comprises a thin tube section charged with a substrate gel for an enzymatic reaction and provided on one end thereof with a receptacle section for a sample liquid to be measured.
Patent CA-2058544-A1 (CA)
Title: Method for finishing the joints between laminated panels
Inventor: BARIL PIERRE
IPC: E04C2/30
Filed: 1991-12-24
Abstract: ABSTRACT            A laminated panel is disclosed, which can be joined is a very simple yet efficient manner to a similar adjacent panel. The panel comprises a substrate having a pair of opposite edges and an upper surface covered by a laminate overlay which is wider than the upper surface and is positioned so as to have one edge adjacent one of the opposite edges of the substrate and another edge extending outwards the substrate, away from the other opposite edge thereof. The laminate overlay is glued onto the upper surface of the substrate, except on a short distance along both opposite edges thereof, thereby defining two unglued flaps that can be folded up to allow fixation of the substrate to a supporting structure. After the flaps of two  adjacent  panels  are  folded  down,  they  partially overlap and hide the joint. Then, they can be cut together before being glued.
Patent CA-2059719-A1 (CA)
Title: Process for the production of terephthalic acid
Inventor: HINDMARSH ERIC
IPC: C07C51/487
Filed: 1992-01-30
Abstract: Terephthalic acid is produced by oxidation of para xylene, purified in an aqueous phase and recovered by precipitating a purified product from the aqueous phase, the aqueous phase mother liquor is then cooled or evaporated to produce a further less pure precipitate and a second mother liquor and the less pure precipitate is returned to the reaction medium and/or the water of the second mother liquor is used to dissolve the crude solid and/or the second mother liquor is treated to recover water which is used to wash the precipitate recovered from the aqueous solution. The process produces better yields of terephthalic acid, reduces the use of water and reduces problems in the disposal of polluted waste water.
Patent CA-2061201-A1 (CA)
Title: Bird glove
Inventor: HARRINGTON CRAIG L
IPC: A63H3/02
Filed: 1992-02-13
Abstract: To Patent Office Abstract The glove named "The Bird Glove" is intended to be a toy only. It is not for use with a professional baseball. It is very durable though and will last a long time with the ball provided with it. We are applying for an Industrial Patent Design, with the concept of a bird catching a ball in its breast area.
Patent CA-2064080-A1 (CA)
Title: Interrupteur de defaut a la terre pour circuit montrant une defaillance du neutre ou de la protection de terre
Inventor: MATSUOKA JOSEPH M
IPC: H02H3/34
Filed: 1990-05-17
Abstract: Coupe-circuit (1) en cas de court-circuit à la masse assurant une protection dans l'éventualité d'une perte de neutre (3) ou de terre (4), d'un potentiel excédentaire entre le neutre et la terre et de connexions d'entrée inversées. On utilise des circuits de déclenchement indépendants et séparés lors des défauts précités et des défauts de terre, éliminant ainsi les problèmes dus à des signaux parasites et réduisant la dépendance vis-à-vis de n'importe quel composant ou groupe de composants. On utilise un agencement d'opto-émetteur (25) et d'opto-détecteur (30) afin de détecter et de provoquer le déclenchement d'un coupe-circuit (6) dans l'éventualité de défauts différents des défauts à la terre.
Patent CA-2064288-A1 (CA)
Title: Emulsifiers for the preparation of oil-in-water emulsions of ethereal oils usable in cosmetics and medicine
Inventor: BALZER DIETER
IPC: C09K23/00
Filed: 1992-03-27
Abstract: ABSTRACT         An emulsifier system for the preparation of oil-in-water emulsions of ethereal oils is disclosed. The system comprises alkyl polyglycosides of the formula I     R-O-Z                        (I) wherein R represents a straight-chain or branched, saturated or unsaturated alkyl radical having 8 to 16 C atoms, Z represents an oligoglycoside radical and n is on average 1 to 5.  The system may further comprise small amounts of conventional co-emulsifiers.  The alkyl polyglycosides of formula I show an excellent skin and mucosa tolerance, combined with high emulsifiability for oils and fat phases, as well as a low toxicity and outstanding biodegradability.  The oil-in-water emulsions of ethereal oils, on their own or in admixture with a fat phase, are used in cosmetics and medicine.
Patent CA-2064491-A1 (CA)
Inventor: MATTHEWS KIRT L
IPC: B28B17/02
Filed: 1992-03-31
Abstract: ABSTRACT OF THE DISCLOSURE             A method of concentrating solids in an aqueous clay slurry (15) is disclosed wherein liquid in the slurry is removed by contacting the aqueous clay slurry (15) with a semi-permeable membrane (80), preferably by passing the dilute aqueous slurry (15) of beneficiated kaolin along a surface of a semi-permeable membrane (80), while imposing a pressure differential across the membrane surface whereby water molecules are caused to pass through said semi-permeable membrane (80) which is substantially impervious to the passage of clay solids therethrough, but pervious to the passage of water molecules, ions and dissolved salts therethrough.  The aqueous kaolin slurry (17) having passed over the membrane surface is collected separately from the permeate as a more concentrated aqueous slurry of beneficiated fine-particle size kaolin particles.  The filterate (75) contains only ions and dissolved salts, such as the sulfates and chlorides of iron, potassium, calcium, or sodium, but is substantially free of carry over clay solids, that is no solids or so little solids that the need to further process the filterate liquid (75) to recover clay solids, which is necessary when using conventional dewatering equipment, is eliminated.
Patent CA-2065906-A1 (CA)
Title: Absorbable composition
Inventor: KENNEDY JOHN
IPC: A61L17/12
Filed: 1992-04-13
Abstract: The invention relates to a block copolymer which comprises a proportion of units having the formula:      as one of the blocks, and another of the blocks comprising a proportion of units having the formula:      and a proportion of units having the formula:      the units of formula (II) and formula (III) being randomly combined.
Patent CA-2067363-A1 (CA)
Title: Non-specific dna amplification
Inventor: LOVETT MICHAEL
IPC: C12Q1/68
Filed: 1990-10-16
Abstract: A method of non-specifically amplifying different-sequence fragments in a mixture of duplex DNA fragments is disclosed. The fragments are provided with end linkers, and the mixture is amplified by successive primer-initiated replication. Also disclosed is a method of cloning cDNA species which are homologous to a region of contiguous genomic DNA and are selected from a mixture of cDNA  species.
Patent CA-2068815-A1 (CA)
Inventor: GRIMES GARY J
IPC: H04Q9/00
Filed: 1992-05-15
Abstract: An optical switching unit requiring no optical-to-electrical conversions on optical data paths being switched through the optical switching unit. The optical switching unit receives optical data information from one terminal and switches it to another terminal. The optical switching unit frame synchronizes the data transmission timing of the terminals in accordance with the data transmission timing of the optical switching unit. This frame synchronization eliminates the need toprovide data buffering and frame synchronization in the optical switching unit. The optical switching unit comprises an optical network, system clock, optical inputinterfaces for receiving information from terminals, and optical output interfaces for transmitting information to terminals. The system clock determines the timing ofeach terminal using information transmitted to an optical input interface by theterminal. If the timing of a terminal does not match that of the system clock, the system clock blocks the transfer of data information by the optical input interface to the optical network and transmits timing information to the terminal via an optical output interface. If the timing matches, the system clock signals the optical input interface to communicate the data information to the optical network which switches the data information to optical output interfaces for transmission to terminals.