baber/WOPTO huggingface dataset:
Patent CA-2032164-A1 (CA)
Title: Waveguide antenna with increased gain
Inventor: ROHRET PAUL J
IPC: H01Q19/10
Filed: 1990-04-16
Abstract: An antenna is disclosed for increasing the gain of, or shaping the pattern of, a radiated radio frequency signal. The antenna includes a waveguide (10) for directing the radio frequency signal or for receiving directively the radio signal, a first conductive reflector (22) disposed beneath the waveguide (10) and extending beyond the aperture of the waveguide for reflecting certain of the waves emanating from or entering the aperture of the waveguide, and a second reflector (16), which may be the mounting surface, disposed beneath the first reflector (22) and extending beyond the first reflector (22) for reflecting other of the waves emanating from or entering the aperture of the waveguide (10).
Patent CA-2032837-A1 (CA)
Inventor: CZERNICHOW JEAN
IPC: E21B23/01
Filed: 1990-12-20
Abstract: Sonde de puits descendue dans un puits rattachée à une liaison rigide telle qu'une colonne tubulaire et pouvant être mécaniquement découplée de celle-ci.      La sonde comporte deux sabots d'excentrement fixés à la colonne à l'extérieur de celle-ci et un sabot intermédiaire pourvu d'un passage central plus large que la colonne. Le sabot intermédiaire est relié au sabot d'excentrement inférieur par une clavette mobile, Il comporte une cavité pour un équipage mobile déplaçable entre une position de retrait et une position de couplage avec la paroi du puits sous l'action de ressorts. L'équipage mobile comporte un boitier pour des capteurs et des moyens hydrauliques de déclenchement. Les capteurs et Les moyens hydrauliques sont reliés à un laboratoire de surface par l'intermédiaire de câbles et d'une cartouche électronique. Le sabot intermédiaire est agencé de manière qu'il ne touche plus la colonne 4 en position d'ancrage de l'équipage mobile.      La sonde peut être associée à un puits équipé pour la production d'hydrocarbures par exemple.
Patent CA-2034240-A1 (CA)
Title: Mass-volume vortex flowmeter
Inventor: LEW HYOK S
IPC: G01F1/32
Filed: 1991-01-16
Abstract: MASS-VOLUME VORTEX FLOWMETER Abstract A flowmeter has a vortex generating bluff body (102) disposed across the flow passage (106), a planar member (103) disposed immediate upstream of the bluff body (102) including a plurality of total pressure ports emerging through the leading edge of the planar member (103) and a plurality of static pressure ports emerging through the side faces of the planar member (103), and a vortex sensing device including a planar member (104) and one or two transducers (111 and 112), which flowmeter determines the mass and volume flow rates of the fluid and the density of the fluid from the dynamic pressure determined from the difference between the total and static pressures and the fluid velocity determined from the vortex shedding frequency.
Patent CA-2034668-A1 (CA)
Title: Process for the enantioselection synthesis of alkylated oxindoles used as intermediates in the preparation of physostigmine
Inventor: LEE THOMAS BING KIN DR
IPC: C07B57/00
Filed: 1991-01-21
Abstract: ABSTRACT:                 - 1 -              HOE 90/S 002 Process for the enantioselection synthesis of alkylated oxindoles used as intermediates in the preparation of physostigmine A process for the stereoselective synthesis of [R]- and [S]-2,3-dihydro-1,3-dimethyl-2-oxo-1H-indole-3-acetonitriles comprises reacting racemic and 5-alkoxy-substituted (?)-1,3-dimethyloxindoles with a halogenated acetonitrile in the presence of a substituted N-benzyl cinchoninium, quinidinium, cinchonidinium, or quininium catalyst.  The resulting alkylated oxindoles can be converted to primary amines by catalytic reduction in the presence of hydrogen gas.  One of the primary amines, such as enantiomers of 3-(2-aminoethyl)-1,3-dihydro-1,3-dimethyl-5-methoxy-2H-indol-2-one, can be enriched by contact with a chiral tartaric acid in an amount sufficient to preferentially precipitate a salt of the chiral acid and one of the enantiomers.  The product can be used in the synthesis of stereospecific forms of physostigmine and related compounds having pharmaceutical activity.
Patent CA-2036416-A1 (CA)
Inventor: GIRAULT YVES
IPC: F24H1/14
Filed: 1991-02-15
Abstract: The electrothermal generator includes a tube (1) in its assembly, made from a glass-fibre reinforced cross-linked resin and composed of an inner thin skin (4) and an outer collar (5) which will confer upon the tube suitable resistance to pressure. The three heating-element segments (11, 12, 13) formed from graphite-based strips wound in spiral turns tightened over the skin (4) and provided, at each of their ends, with connection cables (11c, 11d; 12c, 12d; 13c, 13d) are wound over the skin (4) and under the collar (5). The winding segments occupying a length of about 1 metre of an 82/90 mm cube, and the skin (4) being about 1 mm thick, the generator possesses a nominal power of about 50 kW and the temperature drop between windings and heated liquid will be of the order of 40 DEG C. <IMAGE>
Patent CA-2038400-A1 (CA)
Title: Long acting granular pharmaceutical composition
Inventor: OHMURA TADAYOSHI
IPC: A61K9/50
Filed: 1991-03-15
Abstract: ABSTRACT OF THE DISCLOSURE        A long acting granular composition which comprises:          (a) a fine particulate nucleus composed of a water-insoluble substance;  (b)  a  drug  layer  containing  a  drug  which  is difficult to prepare in long acting form and a non-swellable entero-soluble base; and (c) a drug-release controlling film containing a drug-release controlling material and en entero-soluble base is disclosed.       The long acting granular composition of the present invention has a very satisfactory drug-release pattern and is free from the risk of abrupt disintegration in the digestive tract.
Patent CA-2039902-A1 (CA)
Title: Oxidatively crosslinking urethane resins
Inventor: PRANTL BERNHARD
IPC: C09D7/41
Filed: 1991-04-05
Abstract: O.Z. 0062/90006 Abstract of the Disclosure:   Oxidatively crosslinking essentially isocyanate-free urethane resins, obtainable by reacting A)  100 parts by weight of an ester of (a1) an aliphatic C3-C8-alcohol having three or more hydroxyl groups and (a2) an unsaturated C3-C40-fatty acid and (a3) if required, an aliphatic or aromatic poly-carboxylic acid of 4 to 20 carbon atoms or an anhydride thereof, in amounts of up to 60% by weight, based on the fatty acid a2), the ester containing sufficient free hydroxyl groups to correspond to an OH number of 50-150 mg of KOH/g, with B)   (b1)  3-120 parts by weight of C5-C15-polyhydroxy-carboxylic acids having two or more hydroxyl groups and (b2)  10-100 parts by weight of  an aliphatic  or cycioaliphatic  polyisocyanate  or  a  mixture thereof, at 50-150°C in the presence of a nonpolar solvent which is inert to isocyanates, are suitable for use as printing ink components.
Patent CA-2040382-A1 (CA)
Inventor: SCOGGINS LACEY E
IPC: C08G75/02
Filed: 1991-04-12
Abstract: A method is provided for recovering poly(arylene sulfide) polymers characterized by low ash and oligomer concentrations and having a larger particle size, which method comprises, during recovery, adding or maintaining a sufficient amount of a polar organic compound to the reaction mixture immediately after solidifying the poly(arylene sulfide) polymer.
Patent CA-2043468-A1 (CA)
Title: Sulfur-containing heterocyclic compounds
Inventor: SOHDA TAKASHI
IPC: C07D495/04
Filed: 1991-05-29
Abstract: ABSTRACT OF THE DISCLOSURE      A sulfur-containing heterocyclic compound of the formula (I)   (I) wherein the ring A is an optionally substituted benzene ring, R is a hydrogen atom or an optionally substituted hydrocarbon residue, B is a carboxyl group which may be esterified or amidated, X is -CH(OH)- or -CO-, and n is an integer of 0, 1 or 2, or its salt, which is useful in the prevention or treatment of osteoporosis.
Patent CA-2044688-A1 (CA)
Inventor: VALKO JOSEPH T
IPC: C09D163/00
Filed: 1991-06-14
Abstract: A cationic resin containing blocked isocyanate groups which is suitable for use in electrodeposition is disclosed.  The cationic resin is derived from an epoxy resin and contains in the resin molecule cationic salt groups, active hydrogen groups and blocked isocyanate groups.  The blocked isocyanate groups are incorporated into the resin molecule by reacting the epoxy resin with a compound selected from the class consisting of mercapto compounds and acid group-containing compounds where the compounds also contain blocked isocyanate groups.  The resin can be formulated into an electrocoating composition which is free of lead and yet provides outstanding corrosion resistance when electrodeposited over steel substrates.  The outstanding corrosion resistance can be attained when the substrate has not been given a chrome rinse which is conventional in pretreating the steel substrate before electrodeposition.
Patent CA-2045025-A1 (CA)
Inventor: KAHARU TAKEO
IPC: H04B10/07
Filed: 1991-06-19
Abstract: In each terminal connected to an optical bus a narrow pulse synchronized with the rise of a pre-synchronizing pulse appended to the head of the one digital signal TXN of Manchester-biphase signals, a narrow pulse synchronized with the rise of each pulse of the other Manchester-biphase digital signal TXO and a narrow pulse occurring every fixed period of time during the duration of each pulse are produced, and these narrow pulses are converted into optical signals, which are provided as an optical pulse train to the optical bus.  In each terminal optical pulses received from the optical bus are converted into an electric signal, which is separated into its leading pulse and the subsequent pulses, and the synchronizing pulse is produced in synchronization with the leading pulse and the subsequent pulses are each converted into a pulse of a fixed width to regenerate the signal TXO, and the regenerated signal TXO is polarity inverted and is then combined with the pre-synchronizing pulse to regenerate the signal TXN.
Patent CA-2045260-A1 (CA)
Title: Method for prolonging the useful life of scale inhibitors injected within a formation
Inventor: SHULER PATRICK J
IPC: E21B43/22
Filed: 1991-06-21
Abstract: ABSTRACT OF THE DISCLOSURE              METHOD FOR PROLONGING THE USEFUL LIFE OF SCALE INHIBITORS INJECTED WITHIN A FORMATION      A method is disclosed for prolonging the useful life of scale inhibitors injected within a formation.  This method involves injecting an aqueous solution of polyquaternary amines into the formation.  This solution of polyquaternary amines can be injected either prior to or simultaneously with the injection of the scale inhibitors.  The scale inhibitors are preferably non-polymeric scale inhibitors.  Preferably, the polyquaternary amine is a poly(dimethylamine-co-epichlorohydrin) or a poly(diallyldimethylammonium chloride).
Patent CA-2048412-A1 (CA)
Inventor: FISCHER ARTUR
IPC: B23B51/00
Filed: 1991-08-02
Abstract: ABSTRACT OF THE DISCLOSURE     The drill bit for producing a cylindrical drilled hole, especially in concrete, has a shank and a drilling head at one end of the shank provided with at least one helically extending drilling dust groove. At least two bulb-like shank enlargements (6,7) are provided on the shank (5) arranged in succession axially. Each of the shank enlargements (6,7) has the same maximum diameter and the drilling head has a drilling head diameter which is at least as great as the maximum diameter of the shank enlargements (6,7). Advantageously two drilling dust grooves with semicircular cross sections are provided on the shank displaced from each other radially by about 180° to form a cross member with cutting edges on the drilling dust grooves.
Patent CA-2049237-A1 (CA)
Inventor: BECK G
IPC: G01N33/52
Filed: 1991-08-15
Abstract: 2-Thiazolyl tetrazolium salt compounds characterized by a reflectance spectrum exhibiting an extended plateau above about 600-650 nm. Such compounds are useful as chromogenic indicators for reducing substances such as NADH. The reflectance plateau confers improved accuracy to analytical assays, particularly for the determination of analytes of medical diagnostic significance, in which a colorimetric response on a reagent carrier matrix is measured by reflectance.
Patent CA-2051550-A1 (CA)
Title: Protector for Bore Rods and Pump Rods
Inventor: WOLF GUNTER
IPC: E21B17/10
Filed: 1991-09-17
Abstract: A protector for bore rods and pump rods that is frictionally connected to the rods comprises an elastomeric body with a metal reinforcement.  The elastomeric body comprises a middle section and end pieces whereby the end pieces have a diameter that is reduced relative to a diameter of the middle section.   Metal sleeves enclose the end pieces  for  receiving  radially  acting  forces resulting from heat expansion of the elastomeric body during operation.  The length of the metal sleeves  is  preferably greater  than  the  inner diameter of the metal sleeves.   The end pieces that  are  enclosed  by  the  metal  sleeves  are radially pre-loaded with respect to the metal sleeves  at  ambient  temperature.    The  radial thickness of the wall of the end pieces and the length of the metal sleeves are selected such that at  elevated  temperatures  during  operation  the pressure exerted by the protector onto the bore rods respectively pump rods is greater than at ambient temperature so that the heat expansion improves the frictional connection between the protector and the respective rods.
Patent CA-2052713-A1 (CA)
Title: Delivery of agents
Inventor: BEGGS THOMAS S
IPC: A61K47/48
Filed: 1991-10-03
Abstract: An antibody fragment able to bind to a target site is prolonged by an additional peptide. The therapeutic agent is bound to this peptide or means are provided to bring about such binding. The antibody fragment and possibly also the therapeutic agent are included in a product so that binding to the target site delivers the therapeutic agent to the vicinity. The product may for example be for dental care, such as a toothpaste or mouthwash and the antibody fragment may then bind to a component of dental plaque.
Patent CA-2061644-A1 (CA)
Title: Thermoplastic resin composition
Inventor: TANAKA HISAO
IPC: C08K3/00
Filed: 1992-02-21
Abstract: ABSTRACT         Disclosed in this invention is a thermoplastic resin composition comprising a thermoplastic resin, a conductive inorganic filler and/or a non-conductive inorganic filler, and an adduct of an ethylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a saturated carboxylic acid.  The adduct of an alkylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a carboxylic acid is an additive having excellent compatibility with the thermoplastic resin and useful for improving dispersibility of the inorganic filler.
Patent CA-2065000-A1 (CA)
Title: Liquid crystal polyacrylates
Inventor: MCDONNELL DAMIEN G
IPC: C08F20/30
Filed: 1991-07-02
Abstract: There is disclosed a liquid crystal polyacrylate mono- or co-polymers having a repeat unit (I), wherein R1 and R2 are independently alkyl or hydrogen, R3 is alkyl, hydrogen or chlorine, m is 0 or an integer 1-20, W is a linkage group COO, OOC or O and X  is a mesogenic group.
Patent CA-2065474-A1 (CA)
Inventor: HAUGHTON LANCE J
IPC: H04Q11/04
Filed: 1992-04-07
Abstract: A circuit is proposed for adjusting the loss provided to loops in digital loop carrier transmission systems. A constant current is supplied to the loop and the resulting voltage is measured to determine the resistance of the loop. This value is fed to a microprocessor with a look-up table which controls a programmable analog/digital converter. The loss at the output of the converter is a stepwise function based on the resistance of the customer loop.
Patent CA-2065719-A1 (CA)
Title: Nucleic acid amplification and detection methods using rapid polymerase chain reaction cycle
Inventor: FINDLAY JOHN B
IPC: C12Q1/68
Filed: 1992-04-09
Abstract: NUCLEIC ACID AMPLIFICATION AND DETECTION METHODS USING RAPID POLYMERASE CHAIN REACTION CYCLE              Abstract of the Disclosure Nucleic acids can be amplified and detected using a very rapid polymerase chain reaction procedure.  This procedure includes a series of steps which have critically defined temperature and time parameters. Each polymerase chain reaction cycle requires generally less than about two minutes, and in most cases less than 90 seconds.  At least 5 units/100 µl of solution of thermostable DNA polymerase are used, and other preferred levels of primer concentrations facilitate the quick cycling in the amplification.  In preferred embodiments, only two temperatures are used in the amplification.
Patent CA-2067958-A1 (CA)
Title: Pliable plastic surgical instrument and method of use
Inventor: DENSON CYNTHIA E
IPC: A61B17/28
Filed: 1992-05-04
Abstract: Cynthia E. Denson-Benjamin F. James, IV  1-1 Abstract of the Disclosure An  endoscopic  surgical  instrument  having  a  pliable plastic material basket and method for manipulating soft tissue positioned in the basket.  The surgical instrument comprises an elongated member tube having a collapsible, bulbous-shaped  basket  positioned  at  and  formed  from longitudinal strips slit in the distal end of the tube.  The basket is collapsed and positioned in an introducer sheath for introduction into a body cavity via a minimally invasive access sheath.   The tube further includes a stylet rod positioned at the proximal end for stiffening the tube and extending the basket from the distal end of the introducer sheath when in the body cavity.  When positioned in the body cavity, the basket is extended from the introducer sheath and positioned around a soft tissue organ such as an ovary for subsequent manipulation.  The proximal end of the basket is  partially  retracted  into  the  introducer  sheath  to securely position the ovary within the basket.  To maintain the basket in a partially retracted position, a slidable clamp is positioned around the proximal end of the tube to engage  a  stop  positioned  at  the  proximal  end  of  the introducer sheath to fixedly and longitudinally position the basket and introducer sheath relative to each other.
Patent CA-2068760-A1 (CA)
Inventor: LIPSON EARL
IPC: A63B57/00
Filed: 1992-05-15
Abstract: ABSTRACT OF THE DISCLOSURE          A pneumatically operated golf ball tee system of the present invention comprises an upwardly opening ball and air guide through which the ball passes and above which the ball is pneumatically supported when in a teed position. The system further includes a source of golf balls, a control for ball entry from the source to the guide and an air supply providing pressurized air upwardly through the guide.
Patent CA-2070030-A1 (CA)
Title: Humidifier
Inventor: STENGEL ED
IPC: F24F6/04
Filed: 1992-05-29
Abstract: ABSTRACT OF THE DISCLOSURE            A humidifier comprises a container having an air inlet means and an air outlet; a water reservoir in the container; an absorbent mass having extensive upper surface and lower surfaces, the absorbent mass being floatable on the surface of water in the reservoir; a plate disposed on the lower surface of the absorbent mass to limit the degree of immersion of the absorbent mass while it floats in the reservoir; and a blower for drawing air through the air inlet and directing it onto the upper surface of the absorbent mass so that the air can deposit particles thereon, and absorb moisture therefrom, prior to flowing out of the container through the air outlet. The humidifier is highly efficient, quiet in operation and not affected by varying water levels.
Patent CA-2070926-A1 (CA)
Title: Capacitor and pressure transducer
Inventor: DELATORRE LEROY C
IPC: G01L9/00
Filed: 1992-06-10
Abstract: ABSTRACT      A dual capacitor device for utilizing dependent capaci-tances for measurement  purposes where a first capacitor base member and a second capacitance base member are arranged with parallel capacitor surfaces in parallel planes and where the parallel capacitor surfaces are located on opposite sides relative to a central transverse plane to define first and second capacitors.  The second capacitor base member has a centrally located section connected to an outer section of the second capacitor base member by a torsion beam and the centrally located section is attached to the first capacitor base member by a coupling member.  Angular displacement of the outer section relative to the centrally located section about the displacement axis produces a capacitance change in the first and second capacitors.  A torque force applied to the outer section by a spirally wound bourdon tube in response to pressure develops a low force on the torsion beam which is less than the micro yield point of the torsion beam material and develops a micro dimensional angular displace-ment of the outer section of the second capacitance base member and a capacitance change as a function of the force.
Patent CA-2072357-A1 (CA)
Title: Cultivation tank for aquatic organisms
Inventor: JORGENSEN LEIF
IPC: A01K63/04
Filed: 1990-12-17
Abstract: In a tank (1) for the incubation or cultivation of aquatic organisms, there is a supply pipe (6) for water, and an outlet pipe for water, excess feed, excrement, dead eggs and the like. The outlet pipe (13) from the tank (1) has an intake area close to the bottom (3) of the tank, where this intake area comprises a suction unit (24a, 24b) for particle substances that are heavier than the water in the tank (1). The suction unit (24a, 24b) comprises one or more suction arms (24a, 24b) with an extended range since the suction arms (24a, 24b) are positioned so that they can move along the bottom at least part of the time water is being emptied.  The suction arm or suction arms (24a, 24b) can move to cover an area that approximately corresponds to the shape and size of the bottom (3).
Patent CA-2075911-A1 (CA)
Inventor: SPAHNI MILTON D
IPC: B05B11/02
Filed: 1991-02-12
Abstract: The invention relates to a collapsible bag in squeeze bottle fluid dispenser.  The problem associated with collapsible bag squeeze bottles is that the collapsible bag collapses upon itself near the discharge opening chocking off fluid flow.  A suitable bag support member is inserted inside the flexible bag (40) to prevent substantial axial movement of the bag (40) in the direction of its discharge orifice (42) and to encourage radial collapse of the bag (40) instead.  The internal bag support member which in a pre-ferred embodiment comprises an extruded plastic helix (60) has an internal fluid passage formed within the coils of the helix. Thus, radial collapse of the flexible bag (40) does not block the passage of fluid remaining in the bag (40) through the discharge orifice (42) in the bag until substantially all of the fluid contained within the bag has been dispensed.
Patent CA-2076763-A1 (CA)
Title: Vehicle booster seat
Inventor: EICHHORN ANTHONY E
IPC: B60N2/28
Filed: 1992-08-25
Abstract: Abstract of the Disclosure A vehicle booster seat includes a base adapted to be supported on a vehicle seat for supporting a child on the base in an elevated position relative to the vehicle seat; first and second side bolsters on the base extending upwardly from the base for laterally restraining the child; first and second slots in the first and second side bolsters for receiving the vehicle seat belt and guiding the seat belt over the child to restrain the child in the booster seat, and secure the booster seat to the vehicle seat; a removable shield for restraining a child in the booster seat with a lap belt only, the shield including a generally U-shaped shield body having first and second tongue members extending therefrom adapted to slidingly engage the first and second slots in the base respectively for receiving the U-shaped shield in the base; and a guide in the shield body for receiving a seat belt for securing the U-shaped shield to the base and securing the base relative to the vehicle seat.