baber/WOPTO huggingface dataset:
Patent CA-2051783-C (CA)
Title: Polyamide and process for the production thereof
Inventor: MITANI MAKOTO
IPC: C08G69/26
Filed: 1991-09-18
Granted: 1997-04-29
Abstract: A polyamide comprising a recurring unit of the formula (I), ...(I)   wherein each of R1, R2, R3, R4, R5, R6, R7 and R8 is independently a hydrogen atom, a halogen atom, a hydroxyl group, or a group of a carbon skeleton which may contain a hetero atom or a halogen atom, and A1 is a divalent hydrocarbon group; and a process for the production of a polyamide comprising the recurring unit of the formula (I), which comprises subjecting to a polycondensation reaction a dicarboxylic acid comprising an alicyclic dicarboxylic acid of the formula (a)-1, ...(a)-1   wherein R1, R2, R3, R4, R5, R6, R7 and R8 are as defined in the formula (I), and a diamine of the formula (b)-1, H2N-A1-NH2    ........ (b)-1 wherein A1 is as defined in the formula (I).
Patent CA-2052319-C (CA)
Inventor: SCHUBERT PAUL FREDERICK
IPC: B01J23/04
Filed: 1991-09-26
Granted: 1997-11-04
Abstract: Supports de catalyseur, systèmes de catalyseurs, méthodes pour leur préparation et procédé de dimérisation utilisant ceux-ci. Les supports de catalyseurs sont extrudés à partir d'une pâte épaisse de carbonate de potassium et les systèmes de catalyseur à l'eau comportent au moins un métal alcalin élémentaire déposé sur le support du catalyseur. De plus, le système de catalyseur peut comporter au moins un promoteur.
Patent CA-2055473-C (CA)
Title: Copper alloy compositions
Inventor: YOKOYAMA AKINORI
IPC: B22F1/10
Filed: 1991-02-22
Granted: 1995-11-14
Abstract: A copper alloy composition comprising 100 parts by weight of powder of copper alloy represented by the general formula AgxCuy (wherein x and y are atomic ratio values; 0.001 ? x ? 0.999, 0.001 ? y ? 0.999, x + y = 1), 5 to 200 parts by weight of one or more organic binders and 0.01 to 100 parts by weight of an additive capable of removing copper oxide; and a paste for screen printing, electromagnetic shielding, an electrically conductive additive, a paste for electrode and a paste for through hole, which are obtained by using said composition.
Patent CA-2056181-C (CA)
Title: Assembly arrangement using frustoconical screwthreads for tubes
Inventor: NOEL THIERRY
IPC: F16L15/00
Filed: 1991-11-26
Granted: 1996-09-03
Abstract: The assembly arrangement according to the invention concerns the  tubes  which  are  used  primarily  in  oil  industry installations.  It permits the sealing assembly of a male end to  a  female  end,   each  provided with  frustoconical screwthreads.  The end region of the male component comprises a convex frustoconical sealing surface for providing a metal-metal  sealing connection  with  a  surface  of  the  female component, the internal edge of which is connected to the concave frustoconical abutment region and the external edge of which is connected to the external surface of the end region, having a portion parallel to the generatrix which is tangential  to  the  bottom  of  the threads  of  the  male screwthread.  The diameter of the external edge is such that the prolongation of the generatrix which is tangential to the thread bottoms of the male screwthread passes beyond said external edge.  And, use for the assembly of tubes with male ends by means of female sleeves.
Patent CA-2057836-C (CA)
Title: Process and device for the bulging of glass sheets
Inventor: LETEMPS BERNARD
IPC: C03B23/033
Filed: 1991-12-17
Granted: 2002-04-30
Abstract: Method and apparatus for bending a glass sheet in which the glass sheet is conveyed through a reheating furnace by a conveyor defining a substantially horizontal transport plane and is then taken up by a tool by means of which the glass sheet is bent and/or transferred to a bending and/or discharging device. 
<??>According to the invention the measurement of the detection of the effective position of the glass sheet and the repositioning of the take-up tool are performed as a function of the said effective position. 
<??>The invention applies to the production of motor vehicle glazing. 
<IMAGE>
Patent CA-2065914-C (CA)
Title: Flame retardant polycarbonate composition having improved impact strength
Inventor: PRICE RONALD L
IPC: C08K5/3417
Filed: 1992-04-13
Granted: 2002-10-01
Abstract: A thermoplastic molding composition is disclosed which contains a homogeneous blend of a polycarbonate resin, a graft-modified olefin rubber and, a particular flame retardant package containing a salt, halogenated phthalimine, polytetra-fluoroethylene and an oligomeric carbonate. The composition was found to be suitable,for preparing molded articles having an excellent level of flame resistance and impact properties.
Patent CA-2066737-C (CA)
Title: Process and apparatus for continuous surface treatment of small objects
Inventor: GONTERO ROGER
IPC: A23P1/08
Filed: 1990-09-25
Granted: 1998-02-03
Abstract: Process for the continuous surface treatment of items of limited size, for example, surface treatment of small fragile products, characterized by the product to be treated and, if necessary, the treatment product, being continuously fed into a rotating cylinder (1) lying horizontal or approximately horizontal, which is rotated at low speed and in which is slowly rotating, in the opposite direction, a spiral brush (10) aligned parallel to the said cylinder and which is placed in contact through at least one of its generators, with at least one internal generator of the lower part of the latter. The invention also relates to a machine which allows this process to be implemented.
Patent CA-2067428-C (CA)
Title: Mechanism and process to extinguish fires
Inventor: MARTINS DA SILVA FERNANDO
IPC: A62C3/06
Filed: 1992-04-28
Granted: 1995-10-03
Abstract: The present invention provides an apparatus and process to extinguish fires in oil wells by encircling the nucleus of the fire by creating a barrier of isolation of the fuel.  The apparatus expands gases in the gaseous and liquid states and directs such gases upon, under and around the nucleus of fire, encircling it at 360 degrees and isolating it completely from the atmospheric air, while at the same time causing the convenient cooling of the nucleus of fire, thereby avoiding any possibility of auto-ignition.  The process and apparatus of extinguishing fires in oil wells either in land or at sea, is also disclosed which uses a derrick type hoist, to place the apparatus around the fire, and to apply simultaneously a non-combustible gas in the liquid state (for example, carbon dioxide CO2 or bromochlorine-difluormetane, or nitrogen or any other commercially known gas like HALON 1211), and the same gas in the gaseous state.
Patent CA-2070110-C (CA)
Title: Method and apparatus for testing the integrity of filter elements
Inventor: WEICH GERHARD
IPC: B01D65/10
Filed: 1992-06-01
Granted: 1997-04-01
Abstract: A method and apparatus for testing the integrity of filter elements is provided.The filter assembly comprises a plurality of filter elements which are sub-divided into a plurality of sections. By measuring the gas flow rate under known pressure conditions through all of the sections or a selected portion of the sections, defective filter elements can be isolated in a systematic manner.
Patent CA-2074035-C (CA)
Title: Process and device for water treatment
Inventor: VION PATRICK
IPC: C02F1/52
Filed: 1992-07-16
Granted: 2005-01-11
Abstract: Water treatment process consisting in performing, at the same time, the degritting, the degreasing, the coagulation, the flocculation and the clarification, characterised in that it consists:   - on the one hand in splitting at least one of the functions of degritting and degreasing into two elementary steps, and, - on the other hand in simultaneously performing at least one of the following associated stages:   - the coarse degritting and the coagulation of the raw water (1), - the fine degritting and the first stage of coalescence of the fats (2) and the high-energy flocculation, - the second stage of coalescence of the fats and the low-energy flocculation (3), and - the separation of the fats and the feeding of the clarification (4).   <IMAGE>
Patent CA-2074124-C (CA)
Title: Transmitter with nonlinearity correction circuits
Inventor: MATSUMOTO TAKAYUKI
IPC: H04W52/04
Filed: 1992-07-17
Granted: 2000-09-26
Abstract: In a feedback loop, a modulation carrier signal is amplified or attenuated by a variable gain amplifier (2). A part of a transmission signal amplified by a power amplifier (3) is extracted by a monitor circuit (4), and is detected by an envelope detector (6). This transmission envelope signal and a distortion-free standard envelope signal produced from a standard envelope generator (7) are compared in an error detector (8). An error signal obtained by amplifying the error of the two signals and a DC voltage are added in an adder (9). A gain control terminal (11) of the variable gain amplifier (2) is controlled by using this adder output signal as the control signal. The envelope detector (6) is capable of varying the attenuation quantity of the variable high frequency attenuator (61) and the load resistance value of the variable load circuit (63). Therefore, the dynamic range of the transmission monitor circuit monitor output corresponding to the output voltage of the envelope detector in a predetermined range can be expanded.
Patent CA-2074127-C (CA)
Title: Optical imaging system with a plurality of image planes
Inventor: MUELLER FRANZ
IPC: H04N3/15
Filed: 1992-07-17
Granted: 1998-01-06
Abstract: In this optical imaging system the same object section is imaged by optical means on three spatially separate image planes.          Surface sensors A, B, C of identical width which in turn comprise optoelectronic sensor elements arranged in the manner of a matrix are arranged in the three image planes at a distance from one another in parallel rows and are offset relative to one another from one row to the other.  The three grids of surface sensors which are accordingly formed are offset relative to one another from one image plane to the other in such a way that the object section is detected without gaps by means of the surface sensors A, B and C during optical superposition.  Thus, large surface area pictures with high resolution can be taken with the use of conventional surface sensors, e.g. of the CCD type.  Due to the special arrangement of the surface sensors, three image planes with the corresponding optical means, e.g. three lenses or less than three lenses and additional beam splitter systems such as semipermeable mirrors or prisms, are sufficient.
Patent CA-2074221-C (CA)
Inventor: PONCELET GEORGE V
IPC: B23K37/053
Filed: 1992-07-20
Granted: 1995-01-10
Abstract: An apparatus and method for aligning conduits including pipes, pipe fittings and the like prior to joining, the apparatus including a first ring assembly for removably encircling an end portion of a first conduit to be joined and a second ring assembly for removably encircling an end portion of a second conduit to be joined to the end portion of the first conduit.  A connecting device is provided for connecting the first and second ring assemblies together axially spaced apart so that the ring assemblies are spaced apart sufficiently to permit joining of the end portions of the conduits between the first and second ring assemblies. The apparatus is also provided with aligning provisions for axially aligning the end portions of the first and second conduits, the aligning provisions being disposed between the ring members and including a plurality of adjustable contact surfaces for contacting respective end portions of the first and second conduits.  The contact surfaces are moveable relative to each other to move the first and second conduits into an axially aligned position.
Patent CA-2074820-C (CA)
Title: Improved cyclodextrin based erythropoietin formulation
Inventor: KONINGS FRANK J
IPC: A61K47/48
Filed: 1991-01-25
Granted: 2003-10-14
Abstract: The present invention relates to a new pharmaceutical composition for parenteral and local administration comprising an aqueous solution of erythropoietin and a .beta.-/ or .gamma.-cyclodextrin hydroxyalkyl derivative. The invention also relates to novel lyophi-lized or spray-dried erythropoietin compositions comprising a .beta.- or .gamma.-cyclodextrin hydroxyalkyl derivative, to processes for pre-paring such aqueous, lyophilized or spray-dried compositions and to a method for simultaneously stabilizing erythropoietin in an aqueous solution and preventing it from being adsorbed to surfaces.
Patent CA-2076795-C (CA)
Title: Pressure-sensitive crayon adhesive
Inventor: COLUMBUS PETER SPIROS
IPC: C09J191/06
Filed: 1992-08-25
Granted: 1997-03-18
Abstract: This  invention  relates  to  thermoplastic,  pressure-sensitive solid adhesives capable of trasnferring an adhesive film to  a  substrate by  friction  rubbing  of  the  adhesive  on  the substrate.  The adhesives of this invnetion consist essentially of polyisobutylene, wax and optionally an adhesive promoter resin.          Said ingredients are within certain proportions, molecular weights, melting points, or hardness values.
Patent CA-2080838-C (CA)
Title: Aqueous printing inks having improved freeze-thaw properties
Inventor: SHARMA MAHENDRA KUMAR
IPC: C09D11/10
Filed: 1991-04-22
Granted: 1996-12-31
Abstract: Disclosed are ink compositions having improved freeze-thaw properties that contain an effective amount of propylene gly-col, for example, 0.5 to 10 weight percent. The inks also contain a water-dissipatable polyester prepared from certain amounts of isophthalic acid 5-sodiosulfoisophthalic acid, cyclohexanedimethanol, and diethylene glycol.
Patent CA-2085858-C (CA)
Title: Dual directional recording apparatus and recording system
Inventor: NAKAGAWA YOSHIHIRO
IPC: B41J19/18
Filed: 1992-12-18
Granted: 2001-04-24
Abstract: A text portion is extracted by scanning each page of drawing information from application software. When the height of characters used in the text to be recorded falls within the range of the width of recording head elements of a recording apparatus, commands for designating the number of dots corresponding to the character height to be recorded and for setting a dual direction as the recording direction of a portion constituted by text alone are transmitted to the recording apparatus, for recording of the text portion.
Patent CA-2095985-C (CA)
Title: Apparatus and method to improve pulverizer and reduce no_ emissions in coal-fired boilers
Inventor: BREEN BERNARD P
IPC: F23K1/04
Filed: 1993-05-11
Granted: 1996-12-31
Abstract: An apparatus and method to improve pulverizer operation and reduce nitrogen oxide emissions from furnaces which burn pulverized coal from at least one pulverizer. A duct type burner burns a fuel in the primary air which heats the primary air supplied to the pulverizers. The combustion increases the primary air temperature and improves the drying of the coal, thus improving the pulverizer throughput and/or the fineness of the pulverized coal. Operation of the duct burner also reduces the oxygen in the primary air. The reduction in oxygen reduces the propensity of the coal to ignite in the pulverizers and cause fires or even explosions.          The reduced oxygen in the primary air also reduces NOx formation.
Patent CA-2097288-C (CA)
Inventor: GUPTE ARUN RAJARAM
IPC: A61M13/00
Filed: 1991-11-07
Granted: 1996-12-31
Abstract: The invention relates to a propellant-free inhalation device with a supply of pulverized medical substance in a supply chamber, which has a rotatable dosing means (3) with one or more dosing chambers (4) to receive in one de-fined position the dose of the medical substance to be in-haled from the supply chamber and to discharge the dose in another position. The inhalation device further is provided with a mouthpiece for active inhalation and an air channel (76) to distribute the dose discharged from the dosing cham-ber in the flow of breathing air.
Patent CA-2098044-C (CA)
Inventor: JOHNSON DENNIS W
IPC: B03C3/019
Filed: 1993-06-09
Granted: 1998-09-15
Abstract: An integrated wet scrubber and particulate collection device for removing sulfur oxides and other contaminants from combustion flue gas and also for removing particulates from  this  gas,  such  operations  occurring  in  a  single, integrated  unit  or  assembly.   In  some  instances,  this combination device may be located in the lower portion of a chimney or stack.
Patent CA-2098288-C (CA)
Title: Distillation apparatus
Inventor: KOISTINEN PETER
IPC: C02F1/04
Filed: 1991-12-16
Granted: 2000-10-17
Abstract: The invention relates to a distillation apparatus (1) which is suitable in particular for the distillation of sea water into fresh water. The apparatus comprises a plurality of flat, bag-like elements (3) formed from a thin film material such as plastic film and placed one against the other, the elements serving as heat exchangers between a vaporizing liquid flowing along the exterior surfaces of the element and a condensing vapor directed to the inside of the element, and a compressor (15) for increasing the pressure and temperature of the generated vapor before it is directed to the inside of the elements. The essential idea of the invention is that at the upper end of each bag-like element (3) there is a honeycomb-structured end strip (A) having substantially the width of the element, the strip containing parallel feeding ducts (26) separated from each other by partition walls, the ducts distributing the liquid to be evaporated over the entire width of the element surface. In addition, the strip (4) may contain ducts (25), formed in the same manner, which direct the vapor to be condensed to the inside of the element over the entire width of its end. At the lower end of the element there may additionally be a honeycombstructured end strip (7), the ducts contained therein collecting the produced distillate into a collection vessel (8) and discharging any unvaporized liquid into a collection basin (9).
Patent CA-2099167-C (CA)
Inventor: WESTERVELT RALPH
IPC: F16D3/84
Filed: 1993-06-25
Granted: 1995-04-04
Abstract: A non-reversible thrust washer is provided.  One corner of the thrust washer is curved to abut against a shoulder in the element to which the thrust is being transferred.  The other portions of the thrust washers are held in a groove in the part from which thrust is being transferred.  The groove is asymmetrical and the thrust washer is provided with a corresponding asymmetry so that the thrust washer cannot be inserted into the groove backwards.  The thrust washer preferably is manufactured out of sintered powdered metal in a die having the curved portion formed in the die, with the punch having the asymmetrical portion formed in the punch.
Patent CA-2101522-C (CA)
Inventor: SUN HSIANG-NING
IPC: C08F2/00
Filed: 1992-01-24
Granted: 1996-04-30
Abstract: Inhition of popcorn polymer growth by treatment with heat. Heat can be applied to extant popcorn polymer, particularly in the absence of organic material from which the popcorn polymer is formed. A chemical inhibitor of popcorn polymerization can be used in conjunction with the heat treatment.
Patent CA-2103009-C (CA)
Inventor: JOUBERT ROBERT MONTAQUE
IPC: B61D7/30
Filed: 1993-11-12
Granted: 1998-05-12
Abstract: A discharge hopper rail car 10 comprises a hopper body 14 mounted on a chassis 12 which is itself supported on flanged wheels 20.          The body 14 includes a discharge opening in a lower part thereof and a door structure 16 pivotally mounted on the body 14 and displaceable between a closed condition in which the opening is closed by the door structure 16 and an opened condition to permit discharge of the contents of the body 14.  The door structure 16 forms a basin for collecting both liquids and fines leaking from the  opening when  the  door  structure  16  is  in  its  closed condition.
Patent CA-2106508-C (CA)
Inventor: SAADI ROBERT E
IPC: E03D3/06
Filed: 1993-09-20
Granted: 1996-12-31
Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.
Patent CA-2106788-C (CA)
Inventor: TOSO KENNETH E
IPC: A61B17/00
Filed: 1993-09-23
Granted: 2005-05-31
Abstract: A suture fastening device which includes a first member having a base and two resilient elongated legs extending from the base. The legs are provided with barbs for snap fit engagement with an aperture in a second member, i.e., a retainer. The suture is held in serpentine fashion by positioning the suture transversely across both the legs and then locking the first member and the retainer.
Patent CA-2109176-C (CA)
Inventor: KOSZARYCZ ROMAN
IPC: C10G1/02
Filed: 1993-10-25
Granted: 1998-06-16
Abstract: Oil sand is treated to prevent the production of sulfur dioxide ("SO2") from a known rotating kiln-type processor. Lime or calcium oxide ("CaO") is added with the oil sand feed to the kiln. In the kiln, the CaO is mixed with the sulfur-containing bitumen of the oil sand and preheated. The preheated mixture is then pyrolysed, forming coke which is modified by the added CaO to reduce its tendency to produce SO2 when combusted. The modified coke is then combusted with air, producing substantially no SO2.
Patent CA-2110932-C (CA)
Title: Analog multiplier operable on a low supply voltage
Inventor: KIMURA KATSUJI
IPC: G06G7/163
Filed: 1993-12-08
Granted: 1998-06-30
Abstract: A multiplier includes first through fourth transistors (Q1, Q2, Q3, Q4) and a current source (I0).          The first transistor has a base electrode connected to a first input terminal (T1) and a collector electrode connected to a first output terminal (T5).  The second transistor has a base electrode connected to a second input terminal (T2) and a collector electrode connected to a second output terminal (T6).  The third transistor has a base electrode connected to a third input terminal (T3) and a collector electrode connected to the second output terminal.  The fourth transistor has a base electrode connected to a fourth input terminal (T4) and a collector electrode connected to the first output terminal.  Supplied with voltages of V1 and V2, a voltage supplying circuit produces and supplies voltages of (1/2)V1, (-1/2)V1, {(1/2)V1 - V2}, and {(-1/2)V1 - V2} to the input terminals.  The output terminals are supplied with first and second output currents.
Patent CA-2111516-C (CA)
Inventor: BURCHARD THOMAS
IPC: H01H27/00
Filed: 1993-12-15
Granted: 2003-05-06
Abstract: A switch for operating an electric device, the switch having a released position in which the device can be switched on or off, and a locked position in which switching on of the device is prevented, in combination with a removable key element including a key insertable into the switch and displaceable for placing the switch in a selected one of the released and locked positions.       The switch includes a function element fixedly disposed within the electric device, and an actuating element for switching the electric device on and off, seated on the outside of the device and in operative connection with the function element. The key element is composed of a cap-like slip-on element to which the key is permanently fastened and which is configured to be securely and removably mounted on the actuating element.