baber/WOPTO huggingface dataset:
Patent CA-2011408-C (CA)
Title: Pulverized coal combustion method
Inventor: KANEKO SHOZO
IPC: B07B7/083
Filed: 1990-03-02
Granted: 1994-05-10
Abstract: Abstract of the Disclosure The known pulverized coal combustion method including the steps of separating pulverized coal mixture gas ejected from a vertical type coal grinder containing a rotary type classifier therein into thick mixture gas and thin mixture gas by means of a distributor, and in-jecting these thick and thin mixture gases respectively through separate burner injecting ports into a same furnace to make them burn, is improved so as to reduce both an unburnt fuel content in ash and a nitrogen oxide concentration in exhaust gas while maintaining excellent ignition characteristic.  The improvements reside in that an air-to-fuel ratio of the thick mixture gas is chosen at 1 - 2, while an air-to-fuel ratio of the thin mixture gas is chosen at 3 - 6, and the range of a degree of pulverization of the pulverized coal is regulated at 100 mesh residue 1.5% or less.  The degree of pulverization of the pulverized coal fed to the distributor is regulated either by adjusting a rotational speed of the rotary type classifier or by adjusting the angles formed between classifying vanes rotating about the axis of the rotary type classifier and the direction of rotation.
Patent CA-2013434-C (CA)
Title: Flush water supply system for toilet stool
Inventor: SHIBATA SHINJI
IPC: E03D9/16
Filed: 1990-03-29
Granted: 2000-05-30
Abstract: A flush water supply system comprising a passageway valve mounted in a pipeline for supplying flush water to a toilet stool, and a control circuit for controlling the closing and opening of the passageway valve. A constant flow valve is mounted in the pipeline for keeping a predetermined amount of discharge flow, irrespective of water supply pressure.
Patent CA-2024607-C (CA)
Inventor: COCKETT MARK IAN
IPC: C12N15/85
Filed: 1990-01-10
Granted: 1999-11-30
Abstract: La présente invention concerne un procédé et une cellules hôte permettant d'augmenter la production d'une protéine voulue par une lignée de cellules. Ledit procédé et la lignée de cellule utilisent une première unité de transcription contenant un gène pour une protéine de transactivation, qui commande la transactivation d'une seconde unité de transcription, de sorte que l'on peut augmenter la quantité d'une expression de protéine voulue sans affecter de manière contraire la croissance des cellules. Les protéines de transactivation sont de préférence dérivées du gène E1A.
Patent CA-2025908-C (CA)
Title: Toner usage detection
Inventor: WAYMAN WILLIAM H
IPC: G03G15/06
Filed: 1990-09-21
Granted: 1996-01-09
Abstract: An apparatus which measures the usage of toner in a developer unit. A donor roll receives toner material from a mixer. The mixer fluidizes the toner with the pressure from newly discharged toner moving the fluidized toner from one end of the developer unit to the other end thereof. An electrical bias is applied between the donor roll and mixer. The current biasing the mixer is detected and a signal transmitted in response thereto corresponding to the usage of toner in the developer unit. This signal controls the discharge of toner into the developer unit.
Patent CA-2027419-C (CA)
Title: Polyol fatty acid polyesters
Inventor: SCHAFERMEYER RICHARD G
IPC: A23L27/60
Filed: 1990-10-11
Granted: 1997-12-16
Abstract: This invention relates to polyol fatty acid polyester compositions  having  improved  physiological  properties, organoleptic  properties  (i.e. mouth  feel),  liquid/solid stability and chemical stability.  These polyol fatty acid polyesters are characterized in that (a) not more than about 0.6% of the fatty acid groups contain three or more double bonds, not more than about 20% of the fatty acid groups contain two or more double bonds, and not more than about 35% of the fatty acid double bonds are trans double bonds; (b) the polyesters have an iodine value between about 15 and about 60; and (c) the solid fat content/liquid solid stability ratio is not greater than 0.25.  This invention also relates to a process  for  preparing  these  improved  polyol  polyester compositions.
Patent CA-2029077-C (CA)
Title: Syndiotactic copolymers of propylene and olefins
Inventor: HASPESLAGH LUC
IPC: C08F2/00
Filed: 1990-10-31
Granted: 2003-08-19
Abstract: Copolymers of propylene and olefins having from 2 to 10 carbon atoms in which the microstructure of the side chain is highly syndiotactic, more particularly random copolymers. Also disclosed is a process for preparing said copolymers by metallocene catalysts using an asymmetric bridged dicyclopentadienyl derivative of a metal of groups 4b, 5b, or 6b.
Patent CA-2029488-C (CA)
Title: Prevacuum steam sterilization test pack
Inventor: AUGURT THOMAS A
IPC: G01M99/00
Filed: 1990-11-07
Granted: 2001-01-16
Abstract: A Bowie and Dick type prevacuum steam sterilization test pack for insertion into a sterilization chamber for indicating the presence of unacceptable levels of uncondensable gas comprises a housing, a heat sink and an indicator means. The housing defines a single chamber having a large open end, a relatively small closed end opposite the open end, and a sidewall smoothly tapering from the open end to the closed end. The heat sink is disposed in the chamber and extends substantially from the open end to the closed end to define a path through which the steam travels from the open end toward the closed end, the path being adapted to provide sufficient exposure of the steam to the heat sink so that the steam condenses within the path, releasing any noncondensable gas associated with the steam, forcing the noncondensable gas so released toward and concentrating such noncondensable gas within the closed end. Means are disposed in the chamber adjacent the closed end for indicating the presence of noncondensable gas concentrated therein.
Patent CA-2033031-C (CA)
Title: Linear amplifier
Inventor: IKEDA YUKIO
IPC: H03F3/189
Filed: 1990-12-21
Granted: 1995-05-23
Abstract: A linear amplifier includes a variable attenuator and a phase shifter for modifying the amplitude and phase of an input signal to compensate for amplitude and phase distortion caused by non-linear characteristics of a high-powered amplifier utilized in a microwave band communications system.  An amplitude comparator and a phase comparator compare the amplitudes and phases of input and output signals of the linear amplifier circuit to develop control signals for controlling the operation of the variable attenuator and phase shifter.  The elimination of digital signal processing circuitry allows increased speed of operation that is essential for use in the microwave bands.
Patent CA-2034083-C (CA)
Title: Safety guard for chain saw bar
Inventor: CAIN MYRON C
IPC: B27B17/00
Filed: 1991-01-11
Granted: 1994-10-18
Abstract: A chain saw guard is intended for use on a chain saw, which includes a motor housing, a drive motor contained in the housing, a saw chain guide bar mounted on the motor housing and a saw chain driven by the drive motor and carried on the guide bar.          The guard includes a saw chain guard plate which extends from the housing forward over the guide bar.   A bracket is provided for rotational mounting of the guard plate on the motor housing.  The bracket is mounted on the housing on the same mounting as the chain guide bar.  A limiting mechanism is provided on the bracket for providing limited rotational movement of the guard plate relative to the bracket.
Patent CA-2036047-C (CA)
Title: Rotational speed probe
Inventor: COTTAM MICHAEL JOHN
IPC: G01P1/02
Filed: 1991-02-08
Granted: 1997-12-30
Abstract: A probe transducer subassembly for a rotational speed sensor assembly is provided.  A probe body (1) has a transducer portion (14) extending through an opening (19) into the interior of housing for electromagnetic cooperation with an exciter rotor, a distal portion (15) carrying connection devices extending therefrom and an enlarged diameter intermediate portion defining inwardly and outwardly facing shoulders.  The shoulders cooperate with the exterior surface of the housing surrounding the opening and a shoulder in a shroud member (2) to axially position the probe in the housing and allow the probe to be clamped between the housing and the shroud.
Patent CA-2036506-C (CA)
Title: Weak crystalline ethylene copolymer based sliding and anti-skid optical quality compositions
Inventor: BREANT PATRICE
IPC: C08J5/16
Filed: 1991-02-18
Granted: 1999-02-16
Abstract: The sliding, anti-blocking and optical quality compositions are comprised of at least one ethylene copolymer having a cristallinity not exceeding 30 %; they are characterized in that they further include an efficient quantity of ethylene-bis-oleamide. Said compositions may be conveniently used for the fabrication of plates with a thickness comprised between 1 and 10 mm approximately, and particularly for the production of films with a thickness comprised between 10 and 500  mu m approximately.
Patent CA-2037283-C (CA)
Inventor: PAXTON DONALD J
IPC: B60R21/26
Filed: 1991-02-28
Granted: 1995-01-03
Abstract: ABSTRACT OF THE DISCLOSURE    A dual-stage gas bag inflator, operable initially, when activated, to cause the gas bag to deploy slowly and then, after a delay, to deploy rapidly, includes a housing having first and second compartments of different size separated by a bulkhead.  The first compartment is the smaller since it is to produce a smaller amount of gas to cause the initial slow deployment of the gas bag.  A gas generant charge is ignited in the first compartment, and after some delay, a gas generant charge in the second compartment is ignited.  The delay is produced by an initiator including a squib, igniter material in each of the first and second compartments, and a fuse cord which is ignited by the squib.  The fuse cord passes through the bulkhead and ignites all igniter materials in both inflator compartments simultaneously.  The igniter material in the second compartment is so characterized that it burns slower than the igniter material in the first compartment.  When ignited, the igniter material in the first compartment burns outwardly rapidly while that in the second compartment burns outwardly relatively slower.  As a result, the gas generant in the first compartment is ignited before the gas generant in the second compartment.  The burn rate of the igniter material in the second compartment may be made slower than that in the first compartment by using igniter materials of different chemical composition or by increasing the size of the igniter material, giving it a greater burn area, thus causing it to by consumed slower.
Patent CA-2039053-C (CA)
Inventor: HIRAYAMA CHUICHI
IPC: B01J20/22
Filed: 1991-03-26
Granted: 2001-06-05
Abstract: An insoluble material for adsorbing a pyrogen comprising a polymer of an aziridine compound. According to the present invention, a large amount of the pyrogen can be easily removed from a solution containing pyrogen, and a large amount of the material for adsporbing the pyrogen can be prepared in easy steps. Therefore, the adsorbing material can greatly contribute to the preparation of medicines.
Patent CA-2041158-C (CA)
Title: Tow hook activated brake release method and apparatus
Inventor: WAGNER EDWIN R
IPC: B60T15/02
Filed: 1991-04-24
Granted: 1994-09-20
Abstract: ABSTRACT A brake release apparatus for a vehicle equipped with a spring-applied hydraulically-released brake system. The apparatus includes a tow hook attached to the vehicle and operably connected to a hydraulic cylinder so that a towing force on the tow hook actuates the hydraulic cylinder.  The hydraulic cylinder is connected to transmit a hydraulic pressure to the vehicle brakes, releasing the brakes to permit towing.  A spring returns the tow hook to its original position when the towing force is removed, thereby permitting the spring-activated brakes to be reapplied.
Patent CA-2043414-C (CA)
Title: Method of recovering oil using continuous steam flood from a single vertical wellbore
Inventor: JONES LLOYD GARNER
IPC: E21B43/24
Filed: 1991-05-28
Granted: 2001-02-20
Abstract: A method for recovery of oil from a subterranean, viscous oil-containing formation penetrated by one or more wells each of which is provided with at least two separate flow paths, the first flow path in fluid communication with the bottom of the formation from adjacent or below the formation and the second flow path in fluid communication with substantially the full vertical thickness of the formation. Steam is injected into the formation via the second flow path and fluids including oil are recovered from adjacent or below the bottom of the formation via the first flow path at a predetermined rate which is substantially less than the injection rate of steam so as to increase the formation pressure to a desired level. Formation pressure is maintained at the desired level while continuing injection of steam and production of fluids including oil until the fluids recovered contain an unfavorable amount of water. In a preferred embodiment, the tubing providing the first flow path may be progressively withdrawn or lowered into the wellbore to obtain improved steam-oil ratios and/or higher oil production rates. This method provides maximum gravity drive displacement of oil from the formation.
Patent CA-2045614-C (CA)
Inventor: BACUS JAMES W
IPC: G01N33/569
Filed: 1990-02-23
Granted: 1997-09-30
Abstract: Méthode et appareil de traitement des images (10) donnant un indice de prolifération d'un échantillon de cellules par coloration des cellules à l'aide d'un chromogène comme substance indicative de la prolifération et par contre-coloration pour le dénombrement des noyaux des cellules.  Le chromogène est activé par un conjugué anticorps-enzyme qui se lie à la substance de prolifération pour produire un échantillon de cellules colorées.  L'échantillon de cellules colorées est observé à l'aide d'un microscope optique (12), faisant partie intégrante de l'appareil, qui donne une image agrandie de l'échantillon de cellules.  L'appareil filtre optiquement (18) l'image de l'échantillon et produit une paire d'images optiquement améliorées de la substance de prolifération et du noyau des cellules.  Les images améliorées sont analysées électroniquement pour déterminer le nombre de noyaux de cellules et la quantité de substance de prolifération apparaissant dans les images respectivement.  Les résultats sont alors comparés pour créer un indice de prolifération pour la portion de l'échantillon de cellules apparaissant dans l'image de l'échantillon.
Patent CA-2051224-C (CA)
Title: Carbamate silicon compounds as latent coupling agents and process for preparation and use
Inventor: POHL ERIC RAYMOND
IPC: C07F7/18
Filed: 1991-09-12
Granted: 1995-08-15
Abstract: Novel tertiary-alkyl carbamate silicon compounds are provided which are useful as coupling agents.  The compounds have the formula:            (R3)3COC(O)N(R4)R-Si(R1(3-a))(OR2)a wherein the R groups can represent various hydrocarbon and other groups and a has a value of 1 to 3.     Processes are also provided for the preparation of the carbamate compounds and their use as coupling agents.
Patent CA-2057371-C (CA)
Title: Disk cartridge storage requiring greater withdrawal than insertion force
Inventor: NAKATSUKASA NAOYUKI
IPC: G11B17/22
Filed: 1991-12-10
Granted: 1997-11-11
Abstract: A disk cartridge storage apparatus of a structure which can facilitate insertion of a disk cartridge into a stocker while positively preventing the cartridge once placed at a predetermined storage position from jutting out or dislodgement.  The stocker has a pair of opposite side walls for slidably accommodating the cartridge.  The opposite side walls are provided with retaining members for holding the cartridge at the storage position in combination with biasing members for resiliently biasing the retaining members to engage in retaining recesses which are formed in opposite side surfaces of the cartridge, respectively.  The retaining member is so constructed that an effort required for inserting the cartridge into the stocker is smaller than that required for withdrawing the cartridge from the stocker.
Patent CA-2058812-C (CA)
Title: Transporting mobility control agents to high permeability zones
Inventor: IRANI CYRUS A
IPC: E21B43/16
Filed: 1992-01-06
Granted: 1995-02-07
Abstract: A process for improved delivery of mobility control agents.  The drive solvent is designed such that the plugging agent, e.g. surfactant or polymer, is soluble in the drive solvent under the injection conditions of temperature and pressure but is substantially insoluble under the conditions of temperature and pressure in the formation.  Typically, miscible drive solvents have more favorable solvent properties at the low injection temperature than at the higher formation temperature.  Preferably, solute solubility in miscible drive solvents is increased by the use of appropriate cosolvents.  Cosolvent concentration is maintained below the amount needed for solute solubility at reservoir temperatures so that the solute will drop out of solution at some increased temperature depending on the concentration of the cosolvent added to the primary drive solvent.
Patent CA-2064747-C (CA)
Title: Port and closure assembly including a resealing injection site for a container
Inventor: PACKARD JEFFREY
IPC: A61J1/05
Filed: 1991-06-21
Granted: 2002-02-26
Abstract: A port and closure assembly (10) for a container is provided. The port and closure assembly includes a port (12) having a tubular portion (22) that extends from a base (16) and terminates at an end including an opening. The tubular portion is divided into an upper (28) and lower (30) section by a pierceable membrane (26). The upper section (28) including an end that terminates at the opening and includ-ing a resealing injection sites (32). A closure member (38) for removably surround-ing at least a portion of the end of the port including the opening is provided. The closure (38) includes a sleeve (44) that circumscribes at least a portion of an outer surface of the upper section (28) of the tubular portion. The sleeve (44) is so con-structed and arranged as to cause portions of the upper section (28) to contact the re-sealing member (32) during a sterilization step that softens the portions and further causes the portions of the upper section (28) to retain the resealing injection site (32) within the tubular portion (22) after the portions have hardened.
Patent CA-2073037-C (CA)
Inventor: ROLLAND BENOIT MARIE PIERRE
IPC: G10D3/16
Filed: 1991-11-19
Granted: 2001-02-27
Abstract: PCT No. PCT/FR91/00911 Sec. 371 Date Jul. 10, 1992 Sec. 102(e) Date Jul. 10, 1992 PCT Filed Nov. 19, 1991 PCT Pub. No. WO92/09068 PCT Pub. Date May 29, 1992.A bow equipped with an improvement enabling adjustment of its rigidity. According to the invention, a longitudinal recess is made in the stick of the bow and this recess encloses a core stiffener linked to a screw-nut system (26-27) actuated by a knob (32). The stick can, for instance, be of molded synthetic material.
Patent CA-2073768-C (CA)
Title: Anti-microbial compositions
Inventor: GALLEY EDWARD
IPC: A01N63/50
Filed: 1991-01-30
Granted: 2001-04-10
Abstract: Anti-microbial compositions are described which contain iodide and thiocyanate anions, an oxidoreductase enzyme, namely glucose oxidase, and its corresponding oxidisable substrate, D-glucose. Such compositions may advantageously further comprise a peroxidase such as lactoperoxidase. The compositions have excellent anti-microbial properties effective against bacteria, yeasts and moulds. The compositions may be provided in concentrated substantially non-reacting forms such as dry powders and non-aqueous solutions which may be diluted to provide compositions with broad spectrum anti-microbial activity. Compositions may be used as preservatives or as active agents providing potent anti-microbial activity of use in oral hygiene, deodorant and anti-dandruff products.
Patent CA-2078909-C (CA)
Inventor: VALYI EMERY I
IPC: B29C49/68
Filed: 1992-09-23
Granted: 1995-08-29
Abstract: The present invention discloses an apparatus including a pressure molding machine for delivering plastic articles, a finishing machine for performing a finishing operation upon said articles, a conditioning section operative to adjust the temperature of said articles between the pressure molding machine and finishing machine, a first transporter adapted to remove the articles from the pressure molding machine and a second transporter adapted to transport the articles from the first transporter to the conditioning section.
Patent CA-2089885-C (CA)
Inventor: O'CALLAGHAN WILFRID BERNARD
IPC: H01M50/77
Filed: 1991-08-22
Granted: 1996-02-20
Abstract: A battery and a method for its operation are de-scribed. The battery comprises a caustic-based metal, e.g. aluminum battery with a cathode adapted to reduce oxygen and a metal anode positioned in spaced juxta-posed relation to the cathode to define therewith an anode-cathode gap for receiving electrolyte to form an anode-cathode pair electrically coupled by electrolyte. The battery contains an alkaline electrolyte and seed particles adapted to decrease passivation of the anode during discharge of the battery. The seed particles are .alpha.-alumina of very fine particle size distribution ob-tained by calcination of high-purity alum.
Patent CA-2090607-C (CA)
Title: Appliance for rapid cooling and freezing
Inventor: ROCKENFELLER UWE
IPC: F25B17/08
Filed: 1991-11-06
Granted: 2003-03-04
Abstract: An apparatus capable of rapidly cooling or freezing a com-position comprising a walled housing member (10) having a cool-ing chamber (20) and a door for accessing the cooling chamber from the exterior of the housing, an evaporator (40) and a blower (42) for circulating cold air from the evaporator to the cooling chamber, first (22) and second (24) reactors each containing a complex compound consisting of a metal salt and ammonia ad-sorbed thereon, heaters (21, 23) in the reactors for heating the complex compound, and valves (28, 29, 31, 32) and conduits for directing ammonia from the evaporator to the reactors, from the reactors to the condenser (30), and from the condenser to the eva-porator, and control means (45) for sequentially operating the heaters for alternately heating the complex compounds in the reactors, operating the air handling means and one or more of the valves, and switching means for turning the apparatus on and off.     The apparatus may be of a size suitable for a household appli-ance, and includes an embodiment combining the components with a microwave oven for selectively providing rapid cooling and microwave heating.
Patent CA-2096120-C (CA)
Title: Scene projector
Inventor: UM GREGORY
IPC: H04N9/31
Filed: 1992-10-16
Granted: 1996-07-30
Abstract: Optical energy from a broadband source (12) is focused on an aperture (30) in an opaque member (16).  The energy exiting the aperture (30) is received off axis by a parabolic mirror (18) which collimates the energy. The collimated energy is reflected from each planar mirror of an actuated mirror array (20). The reflected energy from the mirror array (20) is reflected to the aper-ture (30) by the parabolic mirror (18). The orientation of each planar mirror determines the flux which passes through the aper-ture (30) or is reflected by a reflective face (28) of the opaque member (16). The energy reflected from this face (28) which is de-rived from each mirror corresponds to the flux intensity for a corresponding pixel. This energy may then be focused on a screen (24) to display the scene.
Patent CA-2097350-C (CA)
Title: Asynchronous transfer mode (atm) transmission test cell generator
Inventor: MERCHANT SHAHRUKH S
IPC: H04L69/40
Filed: 1993-05-31
Granted: 1998-12-22
Abstract: ATM test cells are generated and inserted into an ATM combined data stream in such a manner that a desired average insertion rate is maintained. Thedesired average insertion rate is obtained by enabling generation of and insertion of test cells into each idle cell of the ATM combined data stream so long as the actual number of test cells being inserted does not exceed a number that should have been inserted.