baber/WOPTO huggingface dataset:
Patent NO-178572-C (NO)
Inventor: EMONDS-ALT XAVIER
IPC: C07D211/46
Filed: 1992-04-30
Abstract: The invention relates to compounds of formula: <IMAGE>  in which:     - m is equal to 2 or 3; - Ar represents a phenyl which is unsubstituted or substituted one or more times by a halogen atom, preferably a chlorine or fluorine atom, by a C1-C3 alkyl, by a trifluoromethyl, by an alkoxy in which the alkyl is C1-C3, by a hydroxyl or by a methylenedioxy; a thienyl, pyridyl or imidazolyl group which is unsubstituted or substituted by a C1-C3 alkyl; - Ar' represents a phenyl group which is unsubstituted or mono- or disubstituted by a halogen atom, preferably a chlorine or fluorine atom, by a C1-C3 alkyl, by a trifluoromethyl, by an alkoxy in which the alkyl is C1-C3, by hydroxyl or by a methylenedioxy; a thienyl group; an imidazolyl group or a benzothienyl group which is unsubstituted or substituted by a halogen, preferably by a chlorine or fluorine atom; a naphthyl group which is unsubstituted or substituted by a halogen, preferably by a fluorine atom; a biphenyl group; an indolyl which is unsubstituted or substituted on the nitrogen by a benzyl group; - X represents an oxygen atom, a sulphur atom, a sulphone or a sulphoxide, an -NH- group, a group <IMAGE> or a group <IMAGE> in which Alk is a C1-C3 alkyl group or a group <IMAGE> in which Alk represents a C1-C3 alkylene and X1 and X2 independently represent hydrogen, a C1-C3 alkyl or constitute, with the nitrogen atom to which they are bonded, a heterocycle chosen from pyrrolidine, piperidine or morpholine; - Q represents hydrogen, a C1-C4 alkyl group or an aminoalkyl group of formula -(CH2)q-Am', where q is 2 or 3 and Am' is a piperidino, 4-benzylpiperidino or dialkylamino group, it being possible for each alkyl to contain from 1 to 4 carbon atoms; - R represents hydrogen, a methyl group or a group (CH2)n-L, where n is an integer from 2 to 6 and L is hydrogen or an amino group;   - T represents a group chosen from: <IMAGE> W being an oxygen or sulphur atom, and   - Z represents either M or OM when T represents:  the group <IMAGE> or M when T represents the group <IMAGE> M represents hydrogen or a straight or branched C1-C6 alkyl; an  alpha -hydroxybenzyl, an  alpha -alkylbenzyl or a phenylalkyl in which the alkyl group comprises 1 to 3 carbon atoms, unsubstituted or mono- or polysubstituted on the aromatic ring by a halogen, a hydroxyl, an alkoxy containing 1 to 4 carbon atoms, or an alkyl containing 1 to 4 carbon atoms; a pyridylalkyl in which the alkyl group comprises 1 to 3 carbon atoms; a naphthylalkyl in which the alkyl group comprises 1 to 3 carbon atoms; a pyridylthioalkyl in which the alkyl group comprises 1 to 3 carbon atoms; a styryl; a 1-methylimidazol-2-ylthioalkyl in which the alkyl group comprises 1 to 3 carbon atoms; a 1-oxo-3-phenylindan-2-yl; an unsubstituted, mono- or polysubstituted aromatic or heteroaromatic group; or to one of their salts with inorganic or organic acids or to one of their quaternary ammonium salts formed with the nitrogen of piperidine. Application: Antagonists of receptors of neurokines (neurokins).
Patent CA-2003873-C (CA)
Title: Heat-resistant exhaust manifold and method of preparing same
Inventor: CYB FREDERICK F
IPC: F01N13/14
Filed: 1989-11-24
Granted: 1995-03-28
Abstract: A method of lining an exhaust manifold is disclosed, including applying a thin layer of a heat-resistant compound to the interior of an exhaust manifold.  The manifold may be in two or more sections where the compound is applied and the sections may subsequently be joined together to form the manifold.  The compound may contain zirconium or may be a ceramic material.
Patent CA-2006631-C (CA)
Inventor: TAKEUCHI MITUNORI
IPC: A61N1/08
Filed: 1989-12-22
Granted: 1995-04-11
Abstract: A bio-stimulating device including a signal controler unit for outputting at least a high frequency digital signal and a low frequency digital signal, a coil unit for changing the voltage of the digital signals input from the controlunit and having a first voltage changing function for high frequency digital signals and a second voltage changing function for low frequency digital signals, and an electrode unit including at least one electrode to be attached to a body wherein different kinds of electrical pulses having different frequencieseach other can be generated, the size minimized, and energy saved.
Patent CA-2006831-C (CA)
Title: System with a single hdlc circuit and a conversion buffer memory for transmitting hdlc frames over a pcm channel
Inventor: LE CORRE NOEL
IPC: H04J3/16
Filed: 1989-12-28
Granted: 1999-11-16
Abstract: The field of the invention is that of data transmission, within the telecommunications sector, in accordance with the ISO standardising protocol, and more particularly in accordance with levels 1 and 2 of the standard essentially for the multiplexing of 32 HDLC channels on a multichannel PCM link. 
<??>The aim is in particular to provide a compact system, by economising on the number of components, making it possible to operate at high speed without incurring the risk of starving the PCM link. 
<??>This aim is achieved with the aid of a system comprising a single transposition buffer memory (71), with read cycle separate from the write cycle, interacting with a single monochannel circuit (70) for formatting the HDLC frames, the said memory (71) being accessed in write mode by the said formatted HDLC frames, and being accessed in read mode under the control of means (76) for selective extraction from the memory (71) of data for constructing the successive blocks of the interlaced channels of the PCM frame. 
<IMAGE>
Patent CA-2007829-C (CA)
Title: Semiconductor device including cascaded modulation-doped quantum well heterostructures
Inventor: BAR-JOSEPH ISRAEL
IPC: G02F1/015
Filed: 1990-01-16
Granted: 1993-12-07
Abstract: SEMICONDUCTOR DEVICE INCLUDING CASCADED MODULATION-DOPED QUANTUM WELL HETEROSTRUCTURES Abstract Modulation-doped quantum well heterostructures are cascaded in a semiconductor device to achieve high speed operation while obtaining large index of refraction or absorption coefficient changes for modulating lightwave signals without significant increases in the operating potentials over prior quantum well structures. Each modulation-doped quantum well heterostructure exhibits substantially equal boundary conditions in an unbiased condition for efficient cascading or stacking. Each quantum well has associated with it a barrier layer to minimize leakage current. As a result, each quantum well has associated with it a separate charge reservoir. This aspect contributes to the speed of the cascaded structure. When incorporated within a waveguide structure, cascaded modulation-doped quantum well heterostructures can act as an external modulator, or as an intra-cavity wavelength tuning element, or as an intra-cavity modulator, or even as an optically-pumped laser.
Patent CA-2013164-C (CA)
Title: Butterfly valve
Inventor: YAMAMOTO TAKESHI
IPC: F16K27/02
Filed: 1990-03-27
Granted: 1994-08-30
Abstract: ABSTRACT      A butterfly valve is described,  including :  a valve body made from synthetic material and having an internal cylindrical fluid passage; a movable disk valve disposed in the valve body for controlling the opening and closing of the fluid passage ; a seated ring made from elastic material inserted between  the valve body and the disk valve for closing the fluid passage when the disk valve is in a closed position ; a shaft hole formed in the valve body into which a stem is inserted  ;  a shaft cylinder formed to extend ouwardly from an outer circumference of the valve body in correspondence with the shaft hole, the stem being inserted into the shaft cylinder and holding the valve axially, the valve body being divided along at least one division line formed across the fluid passage and being composed of plural divided parts, each divided part being joined at a joining surface  extending circumferentially to form one complete valve body and being produced with a plurality of cavity portions  in order  to  achieve light weight  and required thickness,  and the seated ring being fitted into an inner circumference of the valve body.
Patent CA-2021508-C (CA)
Title: Digital speech coder having improved long term lag parameter determination
Inventor: VALENZUELA STEUDE REINALDO A
IPC: G10L19/08
Filed: 1990-07-19
Granted: 1994-05-03
Abstract: DIGITAL SPEECH CODER HAVING IMPROVED LONG TERM       LAG PARAMETER DETERMINATION            Abstract of the Disclosure A method and apparatus is provided for determining the lag Lk of a long term filter (105) in a code excited linear prediction speech coder (100). An open loop lag Lopen is first determined using an autocorrelation function. The open loop lag is then utilized to generate a limited range over which a closed loop search is performed. The range for appropriate values includes lags that are harmonically related to the open loop lag as well as adjacent lags.
Patent CA-2029360-C (CA)
Title: Process and apparatus for the production of titanium dioxide
Inventor: HARTMANN ACHIM
IPC: C01G23/07
Filed: 1990-11-06
Granted: 1998-07-14
Abstract: A process for the production of titanium dioxide through the reaction of vaporous TiCl4 with oxygen under a pressure of between 2.4 and 3.4 bar, and a corresponding apparatus are used to achieve long permanent operation times.  The oxygen required is indirectly preheated to between 850 and 1000° C. In a reaction chamber closed at one  end,  configured  inside  for advantageous flow and lined at least partly with refractories, the indirectly preheated oxygen is further heated by direct contact with very hot combustion gases of an auxiliary flame to temperatures, as is required, for the spontaneous reaction with the TiCl4  introduced downstream into  the  reaction  chamber.          Through an annular passage in the inner peripheral wall of the reaction chamber directly at its front wall, the indirectly preheated oxygen enters the chamber uniformly distributed over its circumference, and the oxygen flow is controlled to obtain a Reynolds' number of between 15,000 and 20,000 in the annular passage and to obtain a ratio of Reynolds'  number to inner diameter, in millimeters, of the reaction chamber of between 25 and 50 to 1.
Patent CA-2034427-C (CA)
Title: Flexible printing plate attachment system
Inventor: REICHEL KLAUS T
IPC: B41F27/12
Filed: 1991-01-17
Granted: 1993-08-17
Abstract: ABSTRACT OF THE DISCLOSURE      To clamp a printing form (16), the end portions are inserted into a clamping groove (2, 3) which is formed by a channel (2) extending at an angle  into the printing cylinder,  and  axially thereover.   The channel 2 is enlarged interiorly of the plate cylinder 1 into an essentially cylindrical opening (3), for example a cylindrical bore,  within which an eccentrically located spindle (4, 24) is located. Upon rotation of the spindle, it will engage the end portions of the printing plate and press it against a wall (5) which, preferably, is  part cylindrical ant a continuation of the circle of the spindle diameter (6, 26).  The surface of the spindle may be roughened or knurled, and a support element (15, 30), resiliently retained in a radial bore, or formed as a projecting  essentially cylindrical collar,  engages the inner wall of the axially  extending cylindrical opening or bore (3) to prevent bend-through of the spindle upon engaging the ends of a printing plate.
Patent CA-2040734-C (CA)
Title: Pallet construction
Inventor: FIEDLER LESLIE C
IPC: B65D19/26
Filed: 1991-04-18
Granted: 2002-12-10
Abstract: A load-carrying pallet has a platform and a plurality of runners attached beneath the platform, the platform and runners being constructed of composites bonded together. A composite comprises a corrugation of, sheet material having longitudinally extending crests and troughs with buttresses filling the troughs and abutting the corrugation so as to sup-port the corrugation against collapse. The buttresses have a boundary, a reinforcement member on the boundary being a sheet material having tensile strength. The sheet material has a substantial columnar strength when side supported, and may comprise randomly-laid, bonded-together glass fibers. The buttresses are initially adhesive fluid plastic material pene-trated into said sheet materials.
Patent CA-2048872-C (CA)
Title: Method of forming a nitride or carbonitride layer
Inventor: ARAI TOHRU
IPC: C23C16/442
Filed: 1991-08-09
Granted: 2000-03-14
Abstract: A nitride or carbonitride layer is formed on the surface of a metal material as follows:      A treating agent composed of a refractory powder of alumina or the like and a powder of a metal for forming a nitride or a carbide or an alloy thereof is disposed in a fluidized bed furnace; the treating agent is fluidized to form a fluidized bed by introducing an inert gas; the fluidized bed furnace is heated to a temperature of not higher than 700°C; an activator of a halogenated ammonium salt is intermittently supplied into the fluidized bed at a rate of 0.001 to 5 wt%/hour based on the total amount of the treating agent; and the metal material to be treated is disposed in the fluidized bed during or after any of the above steps.      For example, a nitride layer composed of only a metal for forming a nitride which contains almost no Fe-N is formed on the surface of iron steel even at a temperature as low as not higher than 700°C. The layer is very hard and efficient in wear resistance, and the toughness of the base metal is hardly lowered.
Patent CA-2057621-C (CA)
Title: Mobile type medical refuse incinerating vehicle
Inventor: FUJIMORI MINORU
IPC: F23J7/00
Filed: 1991-12-13
Granted: 1995-11-14
Abstract: An incinerator is mounted on a vehicle which is adapted to carry thereon medical refuse, and a main burner in which oil or water is suitably injected is provided in a main furnace of this incinerator.  Medical refuse discarded from medical facilities and suspected to cause secondary infection or direct infection is collected and is then at once disposed in the incinerator so as to be burnt.
Patent CA-2059759-C (CA)
Title: Heat exchanger for condensing vapor into liquid phase, power generating plant using the heat exchanger and absorption refrigerator using the heat exchanger
Inventor: TAKAHASHI FUMIO
IPC: F28B1/00
Filed: 1992-01-21
Granted: 1997-02-25
Abstract: A heat exchanger for condensing into liquid phase a vapor containing non-condensable gas components through heat exchange with a heat exchanging medium has a vessel having a vapor inlet for receiving the vapor containing the non-condensable gas components and a discharge port for the non-condensable gas components.          The heat exchanger further has a tube nest disposed in the vessel and having a plurality of tubes through which the heat exchanging medium flows.  The vapor containing non-condensable gas components flows towards the dis-charge port across the tube nest so as to be condensed into liquid phase through heat exchange with the heat exchanging medium flowing through the tubes, so that the non-condensable gas components are separated from the liquid phase and flow towards the discharge port.  The tube nest is constructed to create a change in the dynamic pressure of flow of the vapor towards the discharge port to cause such a static pressure distribu-tion in the heat exchanger that a lower static pressure is established in a region where the discharge port is provided than in a region where the vapor inlet is provided.
Patent CA-2061019-C (CA)
Title: Pole and post sleeve or boot
Inventor: KENNY LOREN D
IPC: E04H12/22
Filed: 1992-02-11
Granted: 1995-06-20
Abstract: Disclosed is a sleeve or boot designed to encase a preformed base  configured  diametrically smaller than the remainder  of  a wooden post or pole, the sleeve or boot protecting and  extending the  life of the base when buried in the ground.  In one  embodi-ment the sleeve or boot may be formed by a coating of a  suitable material  such as plastic.  In a second embodiment the sleeve  or boot  is  preformed from suitable material such  as  plastic  and includes an umbrellalike rim upon which a shoulder of the post or pole  rests  and which deflects excess moisture, and  a  pair  of hooded vents which provide room for expansion in the event  water within the sleeve or boot should freeze.  The sleeve or boot  may be attached to the base by a pair of galvanized pins.
Patent CA-2062403-C (CA)
Title: Flow amount measuring and controlling apparatus
Inventor: HORIIKE YOSHIO
IPC: G01F3/22
Filed: 1992-03-06
Granted: 1997-06-10
Abstract: A flow amount measuring and controlling apparatus for use as part of a gas meter can compute and control the used flow amount for each gas fitting by estimation from changes in the flow amount whereby the condition of the gas fittings can be correctly ascertained and any abnormal situation detected, and the safety of the system enhanced.
Patent CA-2062493-C (CA)
Inventor: NICOLAS FRANCOIS
IPC: C01G43/06
Filed: 1992-03-09
Granted: 2002-07-02
Abstract: Procédé de traitement de gaz à base de fluor contenant de l'acide fluorhydrique et pouvant contenir des composés gazeux condensables, par exemple uranifères, et des gaz incondensables, consistant à le condenser, par refroidissement, pour obtenir d'une part le fluor gazeux et les gaz incondensables et d'autre part une phase liquide contenant HF liquide et les composés condensables en solution et/ou en suspension dans ledit HF liquide, cette phase liquide étant ensuite filtrée pour récupérer lesdits composés en suspension,
Patent CA-2064609-C (CA)
Title: Explosive composition
Inventor: SMITH SYDNEY OLIVER
IPC: C06B31/28
Filed: 1992-04-01
Granted: 1996-10-29
Abstract: An explosive composition for mining operations has been produced using waste oil, lignite and ammonium nitrate in selected ranges of concentrations.
Patent CA-2065126-C (CA)
Inventor: NOTTA ADOLF
IPC: B60N2/22
Filed: 1992-04-03
Granted: 1996-01-23
Abstract: An improved vehicle seat hinge assembly having first and second generally opposed and parallel hinge plates rigidly connected in spaced relation to one another, and a central third hinge plate partially sandwiched between said first and second hinge plates, is disclosed together with a process for assembling the hinge assembly.  The first, second and third hinge plates have respective first, second and third openings therein.  The third hinge plate is connected in hinged relation to the first and second hinge plates by a pivot pin, which has a longitudinal axis, a centrally disposed annular hub portion, and first and second shoulder portions extending in opposite axial directions from the hub portion.  The first, third and second openings are aligned with one another so as to respectively receive in close-fitting operative engagement one each of the first shoulder portion, the annular hub portion and the second shoulder portion.          The first and second openings define at least one keyway slot extending  generally  outwardly  beyond  the  perimeter  of  the opening.  The pivot pin has an amount of plastically deformable pin material adjacent at least one of the openings, and at least a portion of the amount of plastically deformable material is plastically deformed into the keyway slots in intimate and rotationally interfering relation between the pivot pin and the opening, whereby the pivot pin is rotationally fixed relative to the first and second hinge plates and the pivot pin is axially fixed relative to the first and second hinge plates.
Patent CA-2070562-C (CA)
Title: Method of geophysical exploration by analyzing shear-wave polarization directions
Inventor: WINTERSTEIN DONALD F
IPC: G01V1/28
Filed: 1992-06-05
Granted: 1997-11-18
Abstract: A method for geophysical exploration by analyzing shear-wave polarization directions relative to a fixed coordinate frame is disclosed, for either vertical seismic profile data or surface seismic reflection data.  Energy in a selected time window of two off-diagonal components is determined, and the source and receiver coordinate frame is then rotated, and energy is again determined.  A second rotation of the source and receiver coordinate frame is followed by a third energy determination.  A simple trigonometric function equation is generated to fit the determined energy values, and a minimum energy value is determined.  The coordinate frame is then rotated by the angle that gives the minimum energy value, so that all of the signal is put on the diagonal components.
Patent CA-2075824-C (CA)
Title: Method and composition for determining antimicrobial susceptibility of the majority of clinically significant gram positive organisms
Inventor: BADAL ROBERT
IPC: C12Q1/18
Filed: 1991-12-23
Granted: 1996-05-21
Abstract: This invention relates to a method to determine susceptibility to antimicrobial agents of a majority of clinically significant Gram positive organisms. This invention also relates to a mixture of fluorogenic substrates used to detect the growth of Gram positive Bacteria.
Patent CA-2080027-C (CA)
Title: Asymmetrical pulse width modulated resonant dc/dc converter
Inventor: JAIN PRAVEEN K
IPC: H02M3/335
Filed: 1992-10-07
Granted: 1997-11-18
Abstract: New topologies for pulse width modulated resonant DC/DC converters are disclosed. The converters include a bridged chopper to convert the DC input to a high frequency AC which in turn is fed to a high frequency transformer whose secondary AC is rectified and filtered to produce a stable DC output. The bridged chopper has at least two semiconductor switches which alternately conduct. The duty cycles of the conduction of the switches are complementary with one another and adjustable to control the stable DC output. A resonant circuit is connected between the chopper and the high frequency transformer and contains a series capacitor, and a series or parallel inductor depending upon the preferred embodiment.
Patent CA-2085671-C (CA)
Title: Handle connector for multi-pole circuit breaker
Inventor: CASTONGUAY ROGER NEIL
IPC: H01H71/10
Filed: 1992-12-17
Granted: 2003-08-05
Abstract: A multi-pole circuit breaker is formed from a modular array of single-pole circuit breakers. The individual circuit breaker operating handles are ganged together by means of a handle con-nector placed aver the individual circuit breaker operating han-dles. The handle connector has a U-shaped central part flanked by a pair of C-shaped parts disposed on the outside portions thereof to facilitate switching the individual operating handles in unison.
Patent CA-2087403-C (CA)
Title: Tube-forming apparatus
Inventor: VERNON GEOFFREY WILLIAM
IPC: B65B9/06
Filed: 1993-01-15
Granted: 2000-08-29
Abstract: A flexible heat-sealable web is shaped continuously into a tubular cross-sectional shape, eg. as an intermediate stage in the production of infusion bags comprising severed and sealed lengths of the tubular shape. The web is drawn along a shaped shoe and side margins of the web are folded over opposite sides of the shoe by rollers and fingers to place the opposite side edges of the web in overlapping relationship against the shoe. The overlapped edges pass between a roller mounted in the shoe and an external heated roller to be pressed between the two rollers in order to lap weld the edges together as the web travels along the shoe. The shoe continues to form the web downstream of the welding station into a flattened tube.