baber/WOPTO huggingface dataset:
Patent CA-2077029-A1 (CA)
Title: Split flow gasifier
Inventor: HALOW JOHN S
IPC: C10J3/20
Filed: 1992-08-27
Abstract: SPLIT FLOW GASIFIER     ABSTRACT OF THE DISCLOSURE      A moving bed coal gasifier for the production of tar-free, low ammonia fuel gas.  The gasifier described herein employs a combustion zone in a free-board area above the moving bed to burn coal fines to provide hot combustion gases for pyrolyzing and gasifying coal particulates in the moving bed to form fuel gas as the hot gases move co-currently with the downwardly moving coal particulates.  The fuel gas contains entrained tars and ammonia compounds which contact hot char and ash in the moving bed and are cracked so that the fuel gas removed from the gasifier at a mid-point off-take is essentially tar-free and of low ammonia content. Concurrently with this gasification reaction, steam and an oxidant are  introduced  into  a  region  below  the  moving  bed  to  flow countercurrently to the downwardly moving bed to contact and react with carbon remaining in the char to create additional fuel gas which is also extracted from the gasifier at the mid-point off-take.
Patent CA-2077330-A1 (CA)
Inventor: LEGAULT REGINALD C
IPC: F24F7/00
Filed: 1992-09-01
Abstract: A vent hood mountable on the soffit of a building for exhausting a room ventilating system to atmosphere and a building having a room ventilating system connected to such soffit mounted vent.   The ventilating system is a conventional power driven forced air unit with an air inlet communicating with the room to be ventilated and an exhaust outlet.   The exhaust outlet is connected to the soffit mounted vent hood by a flexible conduit.  The vent hood has a pivotally mounted flap valve normally closed and remains closed, when not in use, by the force of gravity.  The flap valve is upstream from the discharge opening from the vent hood and preferably slopes, when in a closed position, relative to the vertical when the vent hood is mounted in situ.
Patent CA-2082003-A1 (CA)
Title: Process for the preparation of substituted pentaalkylchromenes
Inventor: LAFFAN DAVID
IPC: C07C50/24
Filed: 1992-11-03
Abstract: ABSTRACT OF THE DISCLOSURE         A novel process is disclosed for the preparation of pentaalkylchromenes of the general formula:                                       (I) wherein each R denotes a lower alkyl group having from 1 to 4  C  atoms  and  R1  denotes  a  phenyl  group  which is unsubstituted or substituted by a lower alkyl group having from 1 to 4 C atoms, by halogen or by a nitro group, or an alkanoyl group having from 1 to 4 C atoms.  In the process, a  trialkylhydroquinone  is  reacted  with  a  halogenated butenol to give a substituted tetraalkylhydroquinone, which is oxidised and then the halogen atom is substituted with a suitable nucleophile.  The resulting compound is finally cyclised to give the final product of formula I.   The pentaalkylchromenes I are suitable intermediates for the preparation of hypolipidaemic pharmaceuticals.
Patent CA-2082109-A1 (CA)
Inventor: TSENG SU
IPC: A45B25/16
Filed: 1992-11-04
Abstract: TITLE: Umbrella Abstract of the Disclosure An umbrella relates to an umbrella including  improved assembly  of  tubes  and  springs  and being capable of being opened and closed by manual, semi-automatical, or automatical state.  A user can use the umbrella  as  he  likes  in  every situation to obtain a full function of the utilized umbrella.
Patent CA-2083326-A1 (CA)
Title: Process for preparing anhydride-terminated thermoplastic polymers
Inventor: KHOURI FARID F
IPC: C08G64/14
Filed: 1992-11-19
Abstract: PROCESS FOR PREPARING ANHYDRIDE-TERMINATED THERMOPLASTIC POLYMERS                        Abstract of the Disclosure Thermoplastic polymers having recurring carbonate units in the main chain, such as polycarbonates, may be functionalized with anhydride functional groups by effecting a catalytic transesterification of hydroxy-terminated thermoplastic polymers, such as a polycarbonate, with a trimellitic anhydride salicylate ester, preferably trimellitic anhydride phenyl salicylate ester (TMA-PSE). Anhydride functionalized polycarbonates may be used to form ductile, solvent resistant blends with polyamides.
Patent CA-2086507-A1 (CA)
Title: Rapid inducible beta-lactamase screen test
Inventor: JOHNSTON JUDITH
IPC: C12Q1/18
Filed: 1992-04-29
Abstract: In an assay for determination of beta-lactam antibiotic resistance in a target bacterial strain, the strain is grown in the presence of both a beta-lactamase inducing antibiotic and a beta-lactam indicator antibiotic which kills or inhibits the growth of bacteria unable to hydrolyze beta-lactam antibiotics. Growth, indicative of drug resistance in the target strain, is monitored by detecting a fluorophor released by the enzymatic cleavage of a metabolizable fluorogenic compound.
Patent CA-2086513-A1 (CA)
Title: Autobiotics and their use in eliminating nonself cells in vivo
Inventor: EGYUD LASZLO G
IPC: A61K31/4015
Filed: 1991-07-01
Abstract: Physically and chemically latentiated autobiotics are described.  The latentiated autobiotics are useful for the treatment or prevention of any disease or condition, which results from the presence of nonself cells in a vertebrate host. Latentiated autobiotics are furthermore useful in suppressing immune rejection processes, as radiosensitizers and as anticoagulants.
Patent CA-2086785-A1 (CA)
Title: Automated detection of cancerous or precancerous tissue by measuring malignancy associated changes (macs)
Inventor: MACAULAY CALUM
IPC: G06T1/00
Filed: 1993-01-06
Abstract: An apparatus and a method for detecting malignancy associated changes relies on use of the microscope having a high sampling density light transducer. Images of the cell nuclei are obtained in precise focus. The images are segmented using a relocation algorithm for precisely locating the edge of the nucleus. The features of the images. including DNA distribution are analyzed using multivariate analysis to detect malignancy associated changes.
Patent CA-2088030-A1 (CA)
Inventor: ROGERS JOHN N
IPC: F02M25/08
Filed: 1993-01-25
Abstract: A method and apparatus for the testing of a vehicle fuel evaporation control system, which typically includes a fuel tank, vapor adsorption canister and purge valve,  consisting of the introduction of a non-reactive gas into the control system and the subsequent monitoring of the engine exhaust during operation for presence of the gas.  The operating parameters of the engine may be varied  to determine  parameter-associated operation of  the control system.  In addition, the quantity of gas admitted into the system may be compared to that exiting the exhaust to provide a quantitative measurement of the integrity of the control system.
Patent CA-2088461-A1 (CA)
Title: Method for determining the propagation time between a remote terminal station and a central terminal station in a point-multipoint bidirectional transmission network
Inventor: MARCEL FRANCOIS
IPC: H04J3/06
Filed: 1993-01-29
Abstract: This method including a measurement, by the central station (OLT), of the time interval separating a reference instant of transmission of information signals by the said central station, from the reception, by this central station, of a so-called positioning signal (SW) emitted by a remote station (ONT), a delay time after a reference instant of reception of the said information signals by this remote station, so that the said positioning signal is received, by the central station, within a time period, termed the positioning window, which is not allocated to the reception, by this central station, of information signals, is such that the said delay time is, for any one remote station, liable to vary over time from an initial value (Tri) such that the positioning signal is not necessarily received within the said window (Tf), and the said emission of positioning signal is then, for any one remote station, liable to be repeated, until the said positioning signal is actually received by the central station within the said window. 
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Patent CA-2088947-A1 (CA)
Inventor: WARKENTIN DANIEL A
IPC: F02C7/143
Filed: 1993-02-05
Abstract: A hydrogen fuelled gas turbine which includes a combustion chamber having a steam inlet, an oxygen inlet, a hydrogen inlet, and an outlet.  A compressor is provided.  The steam inlet is connected to the compressor such that the compressor provides steam as a working fluid.   The hydrogen inlet is connected to a source of hydrogen gas, whereby hydrogen gas serves as a fuel for combustion.  The oxygen inlet is connected to a source of oxygen gas, whereby oxygen is supplied to oxidize the hydrogen fuel.  An igniter is disposed within the combustion chamber whereby the hydrogen/oxygen mixture is explosively ignited.  The products of combustion combine with the steam and rapidly expand out through the outlet of the combustion chamber.  A turbine is provided having an inlet, an outlet and a rotatable member disposed in a flow path between the inlet and the outlet.   The inlet of the turbine is connected to the outlet of the combustion chamber such that expanding products of combustion and steam exert a force to rotate the rotatable member when passing from the inlet to the outlet.  The compressor has an inlet coupled with the outlet of the turbine whereby steam from the outlet of the turbine is recycled.  The compressor has a plurality of water injectors adapted for connection to a water source whereby water is injected into the steam such that the water draws heat from the steam as it vaporizes thereby triggering a physical volume reduction.
Patent CA-2091139-A1 (CA)
Title: Pulp bleaching system
Inventor: JOYCE PETER
IPC: D21C9/16
Filed: 1993-03-05
Abstract: PULP BLEACHING SYSTEM                  ABSTRACT OF DISCLOSURE A method of bleaching a cellulosic material in a refiner by impregnating the cellulosic material with a peroxide and then passing the impregnated material to a refiner and applying sodium carbonate to the material as it passes into the refiner. The sodium carbonate is intimately mixed with the impregnated material and combines with the peroxide in situ to bleach the material so that the resultant material leaving the refiner is a bleached pulp.
Patent CA-2092492-A1 (CA)
Title: N-(2-hydroxyethyl)-n-bis (methylenephosphonic acid) and corresponding n-oxide thereof for high ph scale control
Inventor: CHEN SHIH-RUEY T
IPC: C02F5/08
Filed: 1993-03-25
Abstract: TITLE OF THE INVENTION N-(2-hYDROXYETHYL)-N-BIS(METHYLENEPHOSPHONIC ACID) AND CORRESPONDING N-OXIDE THEREOF FOR HIGH pH SCALE CONTROL            ABSTRACT OF THE DISCLOSURE    N-(2-hydroxyethyl)-N-bis(methylenephosphonic acid) and corresponding N-oxide thereof possess high calcium tolerance and have been found to give excellent inhibition of the formation, deposition and adherence of scale-forming salts, especially calcium carbonate, under severe conditions which include elevated pH, high dissolved solids content, and high saturation levels of calcium carbonate.
Patent CA-2094009-A1 (CA)
Title: Process for the preparation of etoposide phosphate and intermediates thereof
Inventor: MIYAZAWA YOSHINOBU
IPC: C07H17/04
Filed: 1993-04-14
Abstract: An etoposide phosphate represented by the formula (1):    is prepared by blocking -the hydroxyl groups of the saccharide moiety of etoposide with halogenoacetyl groups, thereafter phosphorylating -the 4'-position, and removing the halogenoacetyl groups from the obtained phosphate in the presence of an amine.      This precess can give the objective etoposide phosphate in a higher yield than that of the prior art to enable the industrial mass-production thereof.
Patent CA-2094451-A1 (CA)
Inventor: HYLL JOHN
IPC: F04D29/42
Filed: 1993-04-20
Abstract: A replaceable lining for a centrifugal pump casing includes a continuous substantially rigid shell made of thermoset plastic resin material reinforced with woven roving fiberglass fabric sheets and randomly dispersed glass fibers. The lining also includes an elastomer layer bonded to an inner surface of the rigid shell. Both the elastomer layer and the shell have a volute section and a semicylindrical or semiconical discharge section integral therewith. The discharge section of the shell is provided along an outer surface with a plurality of outwardly projecting arcuate reinforcement ribs spaced along the discharge section. The ribs are integral with the shell. The shell is preformed and adhesively bonded to the elastomer layer during a compression molding step of a manufacturing process.
Patent CA-2098919-A1 (CA)
Title: Semiconductor device
Inventor: ASHLEY TIMOTHY
IPC: H01L29/73
Filed: 1991-12-19
Abstract: A semiconductor device in the form of a metal insulator field effect transistor (MISFET) (200) is constructed as a heteros-tructure of narrow bandgap In1-x Al x Sb semiconductor materials. The MISFET  (200) is formed from four semiconducting layers (112 to 118) arranged in series as follows: a heavily doped p-type first layer (112), a heavily doped relatively wider bandgap p-type second layer (114), a lightly doped p-type third layer (116) and a heavily doped n-type fourth layer (118). A source (202) and a drain (204) are formed in the fourth layer (118) and a gate (116/205) in the third layer. An n+p- junction (124) is formed between the third and fourth layers and a p+p- junction (122) between the second and third layers. The sec-ond layer (114) provides a conduction band potential energy barrier to minority carrier (electron) flow to the gate (116/205), and is sufficiently wide to prevent tunnelling of minority carriers therebetween. The first and second layers (112, 114) in combination provide a p+p+ excluding contact to the third layer (116). The n+p-junction (124) between the third and fourth layers (116, 118) is an extracting contact; when reverse biased in operation, this junction (124) extracts minority carri-ers from the region of the third layer (116) adjacent the collector (118/204).  In operation, the third layer (116) incorporating the gate (205) becomes depleted of charge earners and therefore exhibits greatly reduced leakage current. In consequence, the MISFET (200) has good dynamic range in terms of controllable drain current. The invention also provides bipolar tran-sistors (300, 400) and related devices.
Patent CA-2102458-A1 (CA)
Title: Lifeline anchor assembly for pre-cast concrete deck
Inventor: OUELLETTE KEVIN D
IPC: A62B35/04
Filed: 1993-11-04
Abstract: Abstract of the Disclosure A lifeline safety system is employed for anchoring a retractable lifeline system to a pre-cast deck panel to provide fall protection for workers.  The lifeline anchor assembly employs a pair of clamp bars which are adapted and positionable for engaging opposing lifting notches of the pre-cast panel.  The retractable lifeline is received in mounting shoes which are mounted to the top of a frame which extends across the top of the panel.
Patent CA-2105811-A1 (CA)
Title: Enhanced chemotherapeutic compositions against microbial infections in fish, the preparation and use thereof
Inventor: KUSUDA RIICHI
IPC: A61P31/04
Filed: 1993-09-09
Abstract: Abstract The invention relates to enhanced chemotherapeutic composi-tions against microbial infections in fish, containing a benzylamine derivative of general formula                       , (I) wherein R1 to R3 are defined as in claim 1, or a physio-logically acceptable acid addition salt thereof and an ef-fective amount of an antimicrobially active substance or a combination of such substances, preferably incorporated in feed, the preparation and the use thereof.
Patent CA-2107629-A1 (CA)
Title: Laparoscopic adjustable gastric banding device and method for implantation and removal thereof
Inventor: KUZMAK LUBOMYR I
IPC: A61B17/12
Filed: 1993-10-04
Abstract: An adjustable gastric banding device for regulating the size of a stoma opening in the stomach of a patient includes an elongate band portion that encircles the stomach so as to limit the food intake by the digestive portion of the stomach. The device can be readily implanted and removed using laparoscopic procedures. A locking element protruding from a location near the distal end of the encircling band portion is inserted into a slot formed in a receiving segment at an intermediate location along the encircling band portion so as to form a circle or loop of fixed diameter. The receiving segment has a thickness which is greater than the thickness of the encircling band portion and of the rear portion of the band. A-moveable bolt secures the locking element in the slot. The bolt can be displaced remotely, thus releasing the locking element and allowing easy laparoscopic removal of the banding device. The entire circumference of the stomach encircling band portion is covered by an expandable section in contact with the surface of the stomach. The size of the stoma opening can be adjusted by injecting into or removing fluid from the expandable section.
Patent CA-2111030-A1 (CA)
Title: Method to identify objects and a device to implement such a method
Inventor: KAISER DIETER
IPC: G01B11/30
Filed: 1993-12-09
Abstract: Abstract The  present  invention  relates  to  a method  to  identify objects by radiating them with electromagnetic waves in W to IR ranges and  processing the waves incidenting from the object by means of an electronic signal processing unit, whereby the waves incidenting from the object strike at least one chip equipped with photodiodes which transmits the taken photoexcitation to a neuronal network, and after alteration of defined individual or several object features such as spatial arrangement, shape and contours, or feature changes by removing parts of the object, waves incidenting from this altered object strike the chip and the trans-mission of the photoexcitations received by the chip to the neuronal  network  continues  at  least  so  long  until  the neuronal network transmits at least one signal specific for the object  that  initiates  defined  sequence  steps.  The present invention relates further to a device for imple-menting the method.
Patent CA-2111638-A1 (CA)
Title: Heat pump system with refrigerant isolating and heat storage
Inventor: SWENSON PAUL F
IPC: F25B13/00
Filed: 1993-12-16
Abstract: HEAT PUMP SYSTEM WITH REFRIGERANT ISOLATION             AND HEAT STORAGE                ABSTRACT OF THE DISCLOSURE         A heat pump system in which a vapor compression refrigerant is isolated from the space being conditioned, heat pumped by the refrigeration circuit is stored and a heat transfer fluid circuit is controlled for conditioning the space and for conducting heat from a heat storage medium at times when the refrigeration circuit does not operate in a regular heat pumping mode.
Patent CA-2115909-A1 (CA)
Title: Acid-modified polyesters and their use in stoving enamels
Inventor: OBERRESSL PAUL
IPC: C09D167/02
Filed: 1994-02-17
Abstract: Abstract Acid-modified polyesters and their use in stoving enamels Acid-modified polyesters obtained by reacting (a)  from 20 to 60, preferably 30-50, mol% of at least one dicarboxylic acid, (b)  from 3 to 30, preferably 5-20, mol% of a dihydroxy-alkanecarboxylic acid, (c)  from 10 to 60, preferably 20-50, mol% of a diol, (d)  from 0 to 30 mol% of a polyalcohol having more than two OH groups or of a polycarboxylic acid, and (e)  from 0 to 20, preferably up to 10, mol% of a mono-carboxylic acid, the ratio of the sum of the hydroxyl equivalents to the sum of the carboxyl equivalents in the reactants being between 0.5 and 2.0,  the quantities of free hydroxyl groups in the end product being between 30 and 350 mmol of hydroxyl groups per 100 g of solid resin, preferably between 100 and 250 mmol of hydroxyl groups per 100 g of solid resin, and the content of free, neutralized and/or neutralizable acid groups being between 5 and 350 mmol of acid groups per 100 g of solid resin, preferably between 9 and 120 mmol of acid groups per 100 g of solid resin.
Patent CA-2116434-A1 (CA)
Inventor: BAUMGARTEN HANNELORE
IPC: C08G18/83
Filed: 1992-08-21
Abstract: ABSTRACT OF THE DISCLOSURE      The invention relates to dispersed liquids containing hydroxy and/or amino-functional compounds by causing polyurethane, polyurethane/polyurea and polyurea waste made by the PUR-RIM and/or RRIM process to react with at least one diamine compound.  The dispersed liquids thus made are suitable for the production of polyurethanes, polyurethane ureas or polyureas.
Patent CA-2116692-A1 (CA)
Title: Electrically actuated valve for a pressurized fluid
Inventor: OSTERTAG ULRICH
IPC: E03C1/05
Filed: 1992-08-12
Abstract: Abstract of the disclosure An electrically actuated valve for control of a pressurized fluid, particularly a sanitary valve, comprises a rotor (15) arranged in a housing (1) between an inlet passage-way (6) and an outlet passageway (7). The rotor (15) is rotatable under the action of the pressurized fluid and transports portions of the fluid from the inlet passageway (6) to the outlet passageway (7). There is an operational connection between the rotor (15) and an element (19) rotatably arranged in a chamber (21) filled with an electro-viscous liquid (22). The electro-viscous liquid (22) is arranged between two electrodes (23, 24) to which as high voltage (25) can be applied. In one embodiment of the invention the rotor (15) also forms the closure element of the valve, which is braked to a various extent by the rotatable element (19) arranged in the electro-viscous liquid. In a further embodiment rotation of the rotor will supplied to a closure member via the rotatable element, which will then be an element of a clutch, and gear means.       (figure 2)
Patent CA-2116921-A1 (CA)
Title: 2-(benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoylbenzyl) phenols and stabilized compositions
Inventor: FALK ROBERT A
IPC: C09K3/00
Filed: 1994-03-03
Abstract: 2-(BENZOTRIAZOL-2-YL)-4-ALKYL-6-(2-HYDROXY-3-BENZOYL-BENZYL)PHENOLS AND STABILIZED COMPOSITIONS            Abstract of the Disclosure 2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-benzyl)phenols are prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a2-hydroxy-benzophenone. The hybrid products exhibit outstanding efficacy in protecting organic substrates from light-induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
Patent CA-2117675-A1 (CA)
Title: An oil-and water-repellent gas-permeable filter
Inventor: SUGIYAMA NORIHIDE
IPC: B32B5/24
Filed: 1994-09-08
Abstract: A oil and water-repellent filter which contains a porous filter material that has its internal and external surfaces coated with a compound formed by combining a fluroropolymer having a fluorine-containing aliphatic cydic structure in the main chain and a fluoropolymer containing polyfluroalkyl groups. The coating imparts superior oil- and water-repellency without impaimnent to the flow of air or other gases through the filter.
Patent CA-2117741-A1 (CA)
Title: Rim process utilizing isocyanates based upon 2,4'-and 4,4'- diphenylmethane diisocyanate
Inventor: HURLEY MICHAEL F
IPC: C08J9/32
Filed: 1994-10-07
Abstract: RIM PROCESS UTILIZING ISOCYANATES BASED UPON 2,4'- AND 4,4'-DIPHENYLMETHANE DIISOCYANATE              ABSTRACT OF THE DISCLOSURE      A RIM process utilizing a reaction product of an MDI containing from 6 to 50% by weight of the 2,4'-isomer and a polypropylene glycol as the isocyanate reactant results in a molded product having excellent low temperature impact properties.