baber/WOPTO huggingface dataset:
Patent CA-2112724-A1 (CA)
Title: Power supply circuit
Inventor: MARINUS ANTONIUS A M
IPC: H02M7/217
Filed: 1993-12-31
Abstract: Abstract: Power supply circuit. Switched-mode power supplies in which a series arrangement of a bipolar transistor and a MOS field effect transistor is used are known and referred to as cascode circuits. In these circuits the bipolar transistor is switched (with the MOS field effect transistor) via the emitter instead of with the base. Since the collector current of the bipolar transistor may vary over a large range, the base should be proportionally driven to prevent the bipolar transistor from getting either above or below its normal operating range. By making use of an extra winding on a transformer arranged in series with the cascode circuit, a non-dissipative proportional drive of the base of the bipolar transistor is obtained. The extra winding is coupled to the base via an inductance.            Fig. 1.
Patent CA-2114160-A1 (CA)
Title: Agents and method for identifying insects
Inventor: TROWELL STEHPEN C
IPC: C07K16/18
Filed: 1994-01-25
Abstract: ABSTRACT         The present invention provides an isolated immunoreactive molecule (IRM) capable of binding to a target molecule from at least one species or sub-species of the insect but not to at least one other species or sub-species of insect and a method of identifying one or more insect species or subspecies and kits therefor.  The invention is partirularly useful for distinguishing between  Lepidopterans  such as Helicoverpa armigera  and  H.  punctigera, and  H.  zea and Heliothis virescens.
Patent CA-2115173-A1 (CA)
Title: 4-acylthio azetidinones
Inventor: CABRI WALTER
IPC: C07D401/12
Filed: 1993-06-14
Abstract: There is provided a process for preparing a compound of formula (I), wherein R is H or a hydroxy protecting group, R2 is an organic residue and R3 is H or a nitrogen protecting group, which process comprises reacting together a compound of formula (II), wherein R1 is a C1-C4 alkyl or a phenyl group, R and R3 are as defined above, a compound of formula (III), wherein R2 is as defined above and X is a cation or a silicon-containing residue, and a salt of a group IIa, IIb or transition element. The compounds of formula (I) are intermediates in the synthesis of penem antibiotics.
Patent CA-2116557-A1 (CA)
Title: Method for producing tetrafluorosilane and aluminum fluoride by hydrofluoric acid digestion of silica/alumina matrix
Inventor: GEHRINGER RONALD C
IPC: C01B33/107
Filed: 1993-07-01
Abstract: This invention is a process for hydrofluoric acid digestion (20A, 20B, 20C) of an inorganic silica/alumina matrix material for the production of silicon tetrafluoride and aluminum fluoride. A  matrix material is reacted with hydrofluoric acid to form silicon tetrafluoride gas and a slurry containing aluminum fluoride, undigested oxides, and both soluble/unsoluble fluoride materials. The silicon tetrafluoride gas is purified by condensing out impurities in cold traps (25) and reacted with aqueous sodium fluoride (30) to form a fluorosilicate salt slurry, which is delivered to a filter press (46) to obtain a powder. The sodium fluorosilicate powder is dried and delivered to a kiln to form silicon fluoride gas and sodium fluoride powder. The aluminum fluoride, undigested oxides, and soluble/unsoluble fluoride materials are recovered by washing, separating using a filter press, and drying in an evaporator while condensing water and excess hydrofluoric acid vapors in a condenser. The aluminum fluorides or metal fluorides are recovered from the dried solution and hydrofluoric acid is collected from the liquid condensate by fractional distillation.
Patent CA-2117465-A1 (CA)
Title: Steam power plant
Inventor: BANKHAMER VINZENZ
IPC: F01K25/06
Filed: 1993-02-10
Abstract: A steam power plant with high efficiency has a mixture of two substances with different boiling points as its working medium. The working medium is heated in a pressure tank (1) and recycled to the pressure tank (1) in a closed circuit via an expander machine (4) and a condenser (6). In the expander machine (4) the substance with the low boiling point evaporates while the substance with the higher boiling point forms droplets. In an opposed closed circuit a coolant is liquefied with a heat pump, cooled in a heat exchanger (10) and then cools the condenser (6) after expansion. After the condenser (6) the working medium passes through the heat exchanger (10) to be heated.
Patent CA-2119403-A1 (CA)
Inventor: FORD MICHEAL E
IPC: C08F26/00
Filed: 1994-03-18
Abstract: ABSTRACT     Amine functional polymers are purified to remove formate present by contact with a supported Group VIII metal hydrogen transfer catalyst under conditions favoring formate decomposition to carbon dioxide and hydrogen which are removed as gases.  The preferred catalyst is palladium on carbon. Essentially salt-free poly(vinylamines) can be obtained by hydrolysis of polymers of N-vinylformamide in aqueous solution using ammonia or a volatile amine as a hydrolysis agent so that formate salts are the principal by-product of the hydrolysis which creates amine functionality in the polymer.  Formate can then by removed by the catalytic decomposition described.  Removal of carbon dioxide is enhanced by degassing the hydrolyzate prior to formate decomposition and by nitrogen purge of the polymer solution during the catalytic decomposition reaction.
Patent CA-2120737-A1 (CA)
Title: Method for diluting high viscosity liquid
Inventor: KAWANABE JUNICHI
IPC: G01N1/10
Filed: 1992-10-08
Abstract: [Abstract]-In pipetting apparatus of a blood sample the method of the present invention intends to increase rapidity of dilution when diluting a red blood cell component having a high viscosity.  At step 212, a diluent is dispensed into a diluting container 66, and at step 213 the diluent is aspirated through a nozzle tip 36 containing therein a red blood cell component. Thus first stage of dilution is performed in the nozzle tip 36.  At step 214, a mixed liquid in the nozzle tip 38 is dispensed, and at steps 215 and 216 aspiration and dispensation are repeated to complete the dilution (mixing).
Patent CA-2122211-A1 (CA)
Title: Procede de desodorisation d'une formulation contenant au moins un compose porteur d'un groupe thiol et formulation desodorisee ainsi obtenue
Inventor: BURGAUD HERVE
IPC: C07B63/00
Filed: 1994-04-25
Abstract: Procédé de désodorisation pour éliminer les composés malodorants présents dans ou formés à partir d'une formulation liquide contenant au moins un composé porteur d'un groupe fonctionnel thiol de formule:   HS~A~Y~B       (I) dans lequel: 1) on met en contact la formulation liquide avec une membrane inerte, perméable aux composés malodorants et imperméable au(x) composé(s) de formule (I); et 2) on met les composés malodorants ayant traversé la membrane es contact avec au moins une substance chimique réagissant avec lesdits composés malodorants et/ou avec au moins une substance d'adsorption physique à une grande surface spécifique fixant lesdit composés malodorants.
Patent CA-2122424-A1 (CA)
Inventor: TODERO GIUSEPPE P I
IPC: F02B75/34
Filed: 1994-04-28
Abstract: A four-stroke engine comprising an engine frame including a block (111) and a head (113), the block forming at least one cylinder (114) and a crankcase (112). A piston (116) is mounted for reciprocation in the cylinder (114), and a crank (117) and connecting rod (118) are mounted in the crankcase (112) and connected to the piston (116). The crankcase (112) includes a fuel inlet port (128) and an outlet port, and a duct connects the outlet port (131) to an intake passage (132) in the head. The inlet port (128) is connected to a supply of a combustible mixture comprising fuel, lubricating oil and air. During engine operation, the mixture flows through the crankcase (112), the duct (132), and the air intake passage (128) to the cylinder (114). Valves (119,120) and valve actuating mechanisms control the flow of the mixture to the cylinder (114) and the flow of exhaust from the cylinder. The oil in the mixture lubricates the engine parts in the crankcase (112), the valves (119,120) and the valve actuating mechanisms. The duct (132) preferably forms a plenum or surge tank containing the mixture under pressure. The engine may include more than one cylinder and piston, such as a two-cylinder engine having pistons which move in synchronism to produce crankcase compression. <IMAGE>
Patent CA-2122934-A1 (CA)
Inventor: BIEHL ROBERT E
IPC: H04M1/253
Filed: 1994-05-05
Abstract: A network adapter and wiring scheme makes use of existing plain old telephone service (POTS) wiring to provide support between analog devices within the subscriber premise and an Integrated Digital  Service Network  (ISDN).  Moreover,  the network adapter and wiring scheme provides further support between digital devices within the premise and the ISDN while concurrently supporting analog devices.
Patent CA-2124158-A1 (CA)
Inventor: HECHT DANIEL H
IPC: C04B38/00
Filed: 1994-05-24
Abstract: Self-reinforcing, pitch-based carbon articles having an unique combination of excellent thermal conductivity and outstanding mechanical properties are produced by carbonizing acid-treated mesophase pitch fiber, preferably in the form of a preform structure. The carbon articles having varying degrees of porosity are particularly desirable for use in thermal management and stiffness applications, and in carbon vapor infiltration processes employed in making complex solid carbon articles.
Patent CA-2124306-A1 (CA)
Title: Quinazolinone derivatives
Inventor: MURAOKA MASAMI
IPC: C07D413/06
Filed: 1994-05-25
Abstract: This invention is to provide quinazolinone derivatives, and their acid salts and quaternary ammonium salts, having an effect of preventing or treating diseases caused by calcium ion overload in cells, such as ischemic heart disease, ischemic cerebral disease and ischemic renal disease, and their usage. The quinazolinone derivatives are represented by the formula:   (see formula 1) typically, T represents an oxygen atom; Y represents a phenyl or cyclohexyl group; R1 represents a hydrogen or chlorine atom; R2 represents a hydrogen atom; ring W represents a benzene or pyridine ring; Z represents a group of the formula:   (see formulas)
Patent CA-2125752-A1 (CA)
Inventor: KUZE YOSHIKAZU
IPC: B23P19/02
Filed: 1994-06-13
Abstract: A press and assembly machine has a die set which has guide posts securely mounded on a base plate, and a cylinder plate securely mounted on top portions of the guide posts, and a movable plate slidably mounted on the guide posts. A cylinder is mounted on the cylinder plate. A piston rod of the cylinder is connected to the movable plate. A pick-and-place device is mounted on the base plate. The pick-and-place device comprises a pair of guide rails mounted on the base plate at opposite sides of the lower die, opposite sliding members slidably mounted on the guide rails, a connecting member connecting the sliding members, a reciprocating cylinder for reciprocating the connected sliding members, and a plurality of gripping actuators provided on the opposite sliding members. The gripping actuator has opposite gripping cylinders, opposite gripping fingers operated by a piston rod of the corresponding cylinder for gripping a work. A  parts-feeder is provided for feeding works one by one to the pick-and-place device. A sequence controller is provided for sequentially operating the machine for progressively pressing and assembling works.
Patent CA-2128064-A1 (CA)
Title: High melt strength, propylene polymer, process for making it, and use thereof
Inventor: DENICOLA ANTHONY J JR
IPC: C08J3/28
Filed: 1994-07-14
Abstract: Disclosed is a normally solid, high molecular weight, non-linear, substantially gel-free, propylene polymer material characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.      Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, linear, propylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.      Further disclosed is the use of the strain hardening polymer in extensional flow operations such as, for example, extrusion coating, film production, foaming and thermoforming.
Patent CA-2128423-A1 (CA)
Inventor: DESLAURIERS PAUL J
IPC: A61K8/92
Filed: 1992-11-25
Abstract: Health and beauty aid composition comprise one or more health or beauty aid components in a gel comprising a mineral oil containing blends of di- and triblock copolymers based on synthetic thermoplastic rubbers,
Patent CA-2130107-A1 (CA)
Inventor: BUEHNING PETER G
IPC: B29C48/05
Filed: 1993-02-12
Abstract: A metblowing die designed to efficiently receive a preassembled die tip assembly is described. The die assembly includes a die body (19) mounted on a meltblowing machine and a replaceable die tip assembly (20). The die tip assembly (20) includes a mounting block (25), to which are mounted a die tip (26) and air knives (27, 28) on opposite sides of the die tip (26). The positions of the air knives (27, 28) are adjustable to set air gap and set back parameters important in proper operation. The die tip assembly (20) is moved into and out of the die body (19) after air knife adjustment, permitting adjustment to be made with the die tip as-sembly (20) off the machine, allowing rapid replacement. The replacement die tip assembly (20) is preheated, permitting replace-ment while the die body (19) is still hot.
Patent CA-2131677-A1 (CA)
Title: Antifoam composition for aqueous systems
Inventor: NGUYEN DUY T
IPC: B01D19/04
Filed: 1994-09-08
Abstract: ABSTRACT         A method for inhibiting the formation of foam in a paper making system by adding a foam control composition consisting of a) either a polyoxyethylene-polyoxypropylene fatty alcohol or polyoxyethylene-polyoxypropylene difatty acid and b) oleic diethanolamide.
Patent CA-2132655-A1 (CA)
Inventor: LIU CHIA-HSIANG
IPC: G01M13/022
Filed: 1994-09-22
Abstract: This  invention  provides  automatic  and  reliable determination of the touch point: of a clutch controlled by an automatic clutch actuation controller.   This invention determines the touch point while idling the engine, with the transmission in neutral and an inertial brake applied.          The clutch actuation controller engages the clutch so that the measured transmission input speed matches a reference speed signal preferably between 40% and 60% of the idle speed.    This  reliably  provides  the  degree  of  clutch engagement at a small torque matching the braking torque.          When the transmission input speed is within a predetermined amount of the reference speed signal,  such as 4%,  this invention determines the clutch touch point corresponding to the degree of clutch engagement.  This degree of clutch engagement may be a clutch position signal or a clutch pressure signal produced by an existing sensor used in the automatic clutch control.  If no measured clutch engagement signal is available, this degree of clutch engagement may be the clutch engagement signal used to control the degree of the clutch engagement.  The touch point is set as the difference between this degree of clutch engagement for the small  torque  and  a  clutch  touch  point  offset.    The determination may begin with the clutch fully engaged and gradually released according to control by the input and reference speeds.  When the previous touch point is known, the clutch is preferably initially positioned just above the known touch point and then gradually released.
Patent CA-2134072-A1 (CA)
Title: Bleaching of a paper web with peroxide
Inventor: HASSI HEIKKI Y
IPC: D21H21/32
Filed: 1993-04-23
Abstract: 2134072 9322501 PCTABS00027 The invention relates to a method for bleaching a paper web with peroxide and to a paper surface treatment mixture intended for such a method. According to the invention, peroxide is introduced onto a moving paper web as part of the said mixture, which in addition to the peroxide contains another active component, such as a bonding agent or a surface coating, to be introduced onto the web. The bonding agent may be made up of starch and a surface coating pigment, such as calcium carbonate, kaolin or talc. Peroxide is added to these so that its amount on each side of the web to be bleached will be approx. 0.08-1.0 g/m2.
Patent CA-2134238-A1 (CA)
Title: Cassette membrane system and method of use for low pressure separations
Inventor: MOLLER JENS K
IPC: B01D61/36
Filed: 1993-05-21
Abstract: A membrane fluid separation apparatus comprising A) a vessel; B) a plurality of membrane cassettes in the vessel which comprise:  i) a plurality of membrane units capable of performing a fluid separation at a relatively low transmembrane pressure arranged substantially parallel to one another with the ends of the membrane units bound in a cured binder such that the interior of the membrane units are open at one or both of the bound ends, ii) a casing comprising a frame arranged about one or more of the plurality of membrane units such that there are two fluid flow systems which do not communicate, the first fluid flow system is in contact with the outside of the membrane units and is adapted for contacting feed fluid with the membrane units and the second fluid flow system is in contact with the interior of the membrane units and comprises a permeate collection chamber at one or both ends of the plurality of membrane units and a flow passage which is adapted for removing permeate from the vicinity of the membrane units; C) a means for introducing feed fluid to the vessel; D) a means for contacting the feed fluid with the feed side of the membrane units;  E) a means for removing the permeate from the permeate flow passages of the plurality of membrane cassettes and the vessel; F) one or more means for creating a transmembrane pressure differential wherein at least part of the pressure differential is achieved by use of a means which creates a vacuum on the permeate side of the membrane units; and G) a means of removing feed fluid which does not permeate across the membrane from the vessel.
Patent CA-2134690-A1 (CA)
Inventor: LAM ANTHONY H
IPC: A61B17/132
Filed: 1994-10-26
Abstract: The apparatus comprises a wheeled base, a vertical pole mounted on the base, and upper and lower, elongate, horizontal arms extending from the support member.  The apparatus can be rolled up to a surgical bed so that the outer end of the upper arm is positioned over the patient on the bed and the outer end of the lower arm is located beneath the bed below the patient. Each arm is slidably mounted on the pole.   Each arm carries quick-acting first means for disengagably locking the arm to the support member to prevent sliding movement and quick-acting second means for temporarily disengaging the first means and incrementally advancing the arm along the support member.  Thus the arms can be quickly moved to bracket the patient and bed underside,  then  locked and  advanced incrementally  to  clamp against  the bed and patient.   The apparatus  is useful  for clamping open arterial incisions to stop bleeding.
Patent CA-2135983-A1 (CA)
Title: Double mode surface wave resonators
Inventor: CAMERON THOMAS PHILIP
IPC: H03H9/64
Filed: 1994-11-16
Abstract: A double mode surface wave resonator comprises two IDTs (inter-digital transducers), arranged side by side between reflection gratings, on a surface of a piezoelectric substrate to provide for coupling of surface waves therebetween, each IDT having interleaved electrodes extending from a common rail between the two IDTs and from a respective outer rail of the IDT. One or each of the IDTs and its outer rail is divided into two halves for providing a differential signal connection to the resonator. The electrodes of the IDTs can be arranged in spatial synchronism with adjacent fingers of the reflection gratings to reduce spurious longitudinal modes.
Patent CA-2137103-A1 (CA)
Title: Liquid distribution operable by solenoid valves
Inventor: ARNAUD GERARD
IPC: F16K39/02
Filed: 1994-12-01
Abstract: Water enters a common manifold at one or more individually line valved inlet ports, and is routed selectively by direct acting type solenoid operated valves to plural exit ports from the manifold. One exit port solenoid valve is normally open and the solenoid valves for each of the other exit ports are normally closed. For instance valve 5a controlsall three ports 3a - 3c. The line valves are closed thus lowering the pressure within manifold 1, whenever any one or more of exit valves is to be actuated -- i.e., closing the normally open or opening the normally closed valves which are low force directing acting. If desired, the normally open (N.O.) exit valve may have a small central hole in the moveable valve poppet for allowing a pilot flow for lowering of pressure, when this normally open valve is in the closed position and is to be allowed to open without requirement for a very strong return spring 21. The N.O. valve solenoid armature has a head portion received in a cavity in the poppet; and the had portion is operative for limited lost motion with respect tothe poppet for opening the pilot passage which lowers the manifold pressure permitting the return spring to re-open the N.O. valve. The manifold may have an automatic pressure release device 9 and there may be flow regulators and/or filters 16 associated with the inlet valves 15,18.
Patent CA-2137250-A1 (CA)
Title: Fuel injection cleaning and testing system and apparatus
Inventor: KILAR JOHN R
IPC: F02B3/06
Filed: 1992-06-05
Abstract: A method and apparatus for cleaning the fuel injection system (12) of a vehicle without disassembling the fuel injectors (34) from the vehicle engine (14). The apparatus includes pump means (54) separate and apart from the vehicle for feeding fuel into the fuel supplying means (48), control means (58) for controlling the pump means, including means for operating said at least one fuel injector while said injector is disposed in operable association with said vehicle engine and means for operating the pump in a fuel feeding mode and in a fuel withdrawing mode whereby to retract fuel from the system, and means for operably associating said pump means with said fuel supplying means and disabling said fuel supplying means to permit said pump means to be the sole source of the fuel supply for said at least one fuel injector.