baber/WOPTO huggingface dataset:
Patent CA-2034293-C (CA)
Title: Process for production of water-absorbent resin
Inventor: NAKAMURA MORIO
IPC: C08F20/00
Filed: 1991-01-16
Granted: 1999-05-04
Abstract: The present invention is directed to an improved process for the production of a water-absorbent resin by reversed phase suspension polymerization of a water-soluble ethylenic unsaturated monomer.  The process is conducted by subjecting an aqueous solution of a water-soluble ethylenic unsaturated monomer to a reversed phase suspension polymerization reaction in a first stage.  The polymerization is conducted in a petroleum hydrocarbon solvent in the presence of a surfactant and/or polymeric protective colloid using a radical polymerization initiator optionally in the presence of a crosslinking agent, cooling the resulting slurry to precipitate the surfactant and/or polymeric protective colloid, and then repeating the polymerization by adding an aqueous solution of a water-soluble ethylenic unsaturated monomer containing a radical polymerization initiator and optionally a crosslinking agent to the first polymerization reaction system to further carry out the reversed phase suspension polymerization reaction, at least, once.
Patent CA-2036593-C (CA)
Title: Detergent composition
Inventor: RABONE KENNETH LESLIE
IPC: C11D3/06
Filed: 1991-02-19
Granted: 1998-12-08
Abstract: DETERGENT COMPOSITION     The invention comprises liquid, non-aqueous compositions comprising: liquid nonionic surfactant in an amount of 25 to 75% by weight; having suspended therein 20 to 75% of solid particulate material with a surface weighted mean particle size in the range 1 to 100µ which comprises a combination of i)        from 5 to 72% by weight of one or more salts which form hydrate(s) stable at 20°C but are present in an anhydrous or incompletely hydrated state, together with ii)       from 3 to 70% by weight of one or more salts which has no stable hydrate at 20°C.         The combination of hydratable and non-hydratable salts enhances suspending properties while inhibiting excess gelling.
Patent CA-2037713-C (CA)
Title: Rolls having synthetic coatings, and process for manufacturing same
Inventor: WEINERT JOHANN
IPC: F16C13/00
Filed: 1991-03-07
Granted: 2000-07-18
Abstract: Rolls with synthetic coating have a coating of poly-2-oxazolidinones being optionally present as a mixture with isocyanurates. Preferably, said synthetic coatings are modified by flexibilizers and inorganic fillers. Manufacture is carried out by addition of multifunctional epoxides to multifunctional isocyanates, in the presence of catalysts, and optionally with the addition of flexibilizers and fillers.
Patent CA-2039745-C (CA)
Inventor: CAIN JOHN J
IPC: F01N1/20
Filed: 1991-04-04
Granted: 2001-06-12
Abstract: A noise suppression system for use on internal combustion engines and small enough for use in automotive applications is disclosed. A cancellation noise generator and actuator speakers produce a noise to combine with and cancel the engine noise carried in exhaust gases in a mixing chamber.      The resultant noise leaving the mixing chamber is measured by a circulr tubular microphone array to control the noise generator.
Patent CA-2042421-C (CA)
Title: A method for the preparation in a non-racemic form of furo (3,4-c) pyridine derivatives
Inventor: ECK CHARLES R
IPC: C12P17/18
Filed: 1991-05-13
Granted: 2000-08-22
Abstract: The invention relates to a method for the preparation, in a substantially non-racemic form of furo [3,4-c] pyridine derivatives of the formula   and of pharmaceutically acceptable salts thereof, wherein R3, R'3, R4 and R6 represents various substituants, the said method comprising resolving a racemic mixture of one of the compounds of the formulae   wherein R3, R'3, R4, R6 are as above defined and R7 stands for an acyl group up to C18, by subjecting the selected compound to the action of an esterase capable of hydrolysing either the (+) or the (-) enantiomeric form of the selected compound, then separating the unhydrolysed and hydrolysed compounds.
Patent CA-2042626-C (CA)
Title: Prill for emulsion explosives
Inventor: VANOMMEREN CATHARINE
IPC: C06B47/14
Filed: 1991-05-15
Granted: 2001-03-20
Abstract: The invention is directed to a blended explosive composition containing an emulsifier which is a derivative of polyisobutylene succinic anhydride and a prill having an internal additive of a naphthalene sulfonate surfactant and an external coating which makes the prill compatible with the emulsifier.
Patent CA-2050501-C (CA)
Title: Circuit test method
Inventor: WILSON ALICE NEE MCKEON
IPC: G06F11/26
Filed: 1991-09-03
Granted: 1999-12-21
Abstract: The present invention relates to a method of testing of digital and analog circuits. If a fault is detected, after stimuli are applied and test measurements are made at some circuit nodes, steps are taken to locate faulty circuit components. At least one further node is selected for measurement on the basis of the levels of information that such nodes can provide. Further measurements aid fault location. For anolog circuits, levels of information are determined by calculation of discrimination factors which depend on possible voltage ranges at unmeasured circuit nodes if various components are considered as faulty. The information gained from measurment at a further node is used to reduce the voltage ranges in order to aid selection of another node to measure.
Patent CA-2058570-C (CA)
Title: Folding device for producing (cigarette) packs
Inventor: FOCKE HEINZ
IPC: B31B50/00
Filed: 1991-12-30
Granted: 1999-01-19
Abstract: Folding  means  of  a  folding  turret  (10),  in particular folding mandrels (11) in the form  of  elongate  thin-walled hollow  bodies,  are  susceptible  to mechanical stress. The folding mandrels (11) are monitored  by  a  monitoring  unit (13)  with  inductive  tracers  (14, 15;  29, 30) as regards correct arrangement and shape. Any changes in the  shape  of the  mandrels  actuate  an error signal which is assigned to the respective folding mandrel (11). The  tracer  means  may be  arranged  on  one  side  of  the path of movement of the folding  mandrels  (11) at  different  distances   thereto. Alternatively,  tracer  means  can  be  installed  at  equal distances on either side of the path  of  movement  of  the folding mandrels (11).
Patent CA-2068552-C (CA)
Inventor: BENSEL WILLIAM H III
IPC: H02G15/013
Filed: 1992-05-13
Granted: 1994-12-13
Abstract: Abstract A closure (20) includes a grommet (50) having passageways (52-52) therethrough for allowing cables to extend into the closure. The grommet (50) comprises a unitary elastomeric body (60). Each passageway is defined by an interior sidewall from which a plurality of longitudinally spaced circumferential ridges (74-74) extend. For a substantial portion its circumference, each ridge has an axis of projection which forms an oblique angle with respect to a longitudinal axis of the associated passageway and is sufficiently elongated in longitudinal cross section so as to be capable of flexing with respect to the axis of projection during insertion of a portion of a cable and enlarging its opening diameter to accommodate and form a seal about the inserted cable portion. A slit (71) which is parallel to a longitudinal axis (73) of an associated passageway extends between end faces (62,64) and from the associated passageway to an outer surface portion of the grommet to facilitate insertion of a portion of a cable into the associated passageway. The grommet also includes a plurality of ribs (69,69) on an outer surface portion which provides a seal with a surface of an opening in which the grommet is disposed. Provisions are made to cause portions of each ridge and rib adjacent to each slit to be maintained with at least some overlap during installation and use of the closure in order to maintain the sealing effectiveness of the grommet.
Patent CA-2077914-C (CA)
Title: Process for enrichment of fat with regard to polyunsaturated fatty acids and phospholipids, and application of such enriched fat
Inventor: SOLA EINAR
IPC: A23K1/16
Filed: 1990-03-12
Granted: 2000-05-30
Abstract: A process for enrichment of fat with regard to polyunsaturated fatty acids and phospholipids implicates extraction of the fat with a fat-solving alcohol, whereafter the fat is precipitated in fractions. The precipitation is accomplished through evaporation, separation and further stepwise precipitation and evaporation. Each step of precipitation can be regulated through adding solvent. The produced fat is applied as feed supplement for human and animal life, as feed supplement destined for food or fodder, as ingredient in feed products, or alone or as ingredient in products within health or medical care.
Patent CA-2078418-C (CA)
Inventor: BONDE KEVIN G
IPC: F01N13/14
Filed: 1992-09-16
Granted: 1995-07-18
Abstract: A nonmetal heat shield that is removably attachable directly to a muffler shell for preventing inadvertent contact with the hot shell surfaces of the muffler.  The heat shield includes a plurality of raised boss portions for attaching the heat shield to the muffler shell.  A non-metal spacer is located between the bottom surface of the raised boss portion and the fastening portion of the muffler shell to thermally insulate the heat shield from the muffler sufficiently to inhibit thermal degradation of the heat shield.
Patent CA-2080083-C (CA)
Inventor: MIYAKE AKIRA
IPC: G03F7/20
Filed: 1992-10-07
Granted: 1998-10-06
Abstract: Disclosed is an optical arrangement which includes an optical system for transforming synchrotron radiation light emitted from an emission point of a synchrotron ring into a substantially parallel beam, with respect to a first direction which is parallel to an orbit plane of the synchrotron ring and with respect to a second direction which is perpendicular to the orbit plane, wherein an absolute value of a focal length of the optical system in the first direction is smaller than that in the second direction.
Patent CA-2083368-C (CA)
Title: Disposable microwavable food container
Inventor: FRITZ JILL ANN
IPC: B65D1/34
Filed: 1992-11-19
Granted: 2000-01-04
Abstract: A container for deli food has a base and a removable lid with male and female locking members extending around the periphery thereof. Stiff tabs extend from the periphery of the base and the lid The tabs are displaced one from the other for easy opening of the container.      The tabs are embossed with visual instructions for unlocking. The base of the container is formed of opaque plastic and the lid is clear plastic. The plastic materials are suitable for placing the container in a warming oven and for reheating the food in a microwave oven.
Patent CA-2087845-C (CA)
Title: Apparatus and method for generating a transition between the on and off states of a radio frequency transmitter
Inventor: GREENE ROBERT I
IPC: H03G3/30
Filed: 1992-06-19
Granted: 1997-11-04
Abstract: An apparatus and method generates a shaped transition between the minimum and maximum output power levels of a transmitter (500). When the transmitter is turned on a stepped transition (415) is generated at the beginning (3) of the transition region (409) followed by a shaped transition (417) to the end (6) of the transition region (409). When the transmitter (500) is turned off a shaped transition region (417') is generated at the beginning (162) of the transition region (411) followed by a stepped transition (415') at the end (3) of the transition region (411). The stepped transition (415 or 415') is generated by adjusting a voltage controlled attenuator (545) and the bias of a power amplifier (545) in the transmitter (500). The shaped transition (417 or 417') is generated by processing transmitted information through finite impulse response filters (507 or 509) before or after the time slot permitted for transmitting information.
Patent CA-2089951-C (CA)
Title: Method of joining superconducting wire using oxide high-temperature superconductor
Inventor: FUJIKAMI JUN
IPC: H01F6/06
Filed: 1993-02-19
Granted: 1997-02-04
Abstract: Disclosed herein is a method which enables permanent current junction of a tape-type oxide superconducting wire and suppresses reduction of its critical current.  An end portion of a tape-type wire (10) to be joined is removed to expose oxide superconductor filaments.  Another tape-type wire (10') to be joined with the wire (10) is processed in a similar manner.  The tape-type wires (10, 10') are so superposed that the surfaces exposing the filaments face with each other, and the superposed portions are pressed in a direction perpendicular to principal surfaces of the tapes and heat treated at a temperature of 800 to 900°C, to be completely joined with each other.
Patent CA-2090028-C (CA)
Title: Carton with self locking keel
Inventor: MARIE PHILIPPE
IPC: B65D71/00
Filed: 1991-08-19
Granted: 1998-08-11
Abstract: A carton having a box keel structure (16) which serves as an article separator or retention device and in which cooperating locking elements (38, 40) are provided in part by the keel structure and in part by a panel (12), the locking means being automatically engaged during the erection of the keel structure, the locking elements comprising a locking tab (38) and projecting ridge (40).
Patent CA-2096318-C (CA)
Inventor: CARCELLER ELENA
IPC: A61P11/08
Filed: 1993-05-14
Granted: 1998-06-23
Abstract: The present invention relates to 8-chloro-11-[1-[(5-methyl-3-pyridyl)methyl]-4-piperidyliden]-6,11-dihydro-5H-benzo[5,6]cyclo-hepta[1,2-b]pyridine (4) of the formula (see fig. I) to a process for its preparation and to pharmaceutical compositions containing it.  This compound is a dual PAF antagonist and antihistamine.
Patent CA-2097047-C (CA)
Title: Actinide catalyzed chain growth process
Inventor: SAMSEL EDWARD G
IPC: C08F4/54
Filed: 1993-05-26
Granted: 2005-12-06
Abstract: An improved process for preparing an alkyl chain growth product by the chain growth reaction of .alpha.-olefin in an aluminum alkyl uses a catalyst system which comprises an actinide metallocene.
Patent CA-2103805-C (CA)
Inventor: GAVIRAGHI GIOVANNI
IPC: A61K31/455
Filed: 1992-02-08
Granted: 2002-09-17
Abstract: The use of (E)-4-[2-[3-(1,1-dimethylethoxy)-3-oxo-1-propenyl]phenyl]-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylic acid diethyl ester (lacidipine) for the treatment and/or prevention of arteriosclerosis.
Patent CA-2108222-C (CA)
Inventor: DOHERTY JAMES E
IPC: B25C1/08
Filed: 1993-10-12
Granted: 1997-02-25
Abstract: For use in a combustion-powered, fastener-driving tool having a combustion chamber, a source of a combustible fuel, and a switch that must be closed to enable the tool, a fuel system comprises a fuel injector, which includes a normally closed, solenoid-energized valve between the fuel source and the combustion chamber, and an electronic circuit responsive to the switch for energizing the solenoid to open the valve when the switch is closed and for deenergizing the solenoid after a time interval.  A resistive-capacitive network defining the time interval includes a first resistor, a second resistor arranged to be selectively connected in parallel therewith, a thermistor connected in parallel therewith, and a variable resistor connected to the parallel resistors.  Another network effects a time delay between closure of the switch and energization of the solenoid.  Optionally, another network varies the time interval in response to ambient pressure.
Patent CA-2108314-C (CA)
Inventor: MARQUIS GUILLAUME
IPC: E21D20/00
Filed: 1993-10-13
Granted: 1998-02-24
Abstract: A bending and feeding apparatus and a method therefor  are provided  for  installing  a  cable  into  a preformed bore. The apparatus comprises a main frame on which are mounted guiding means for guiding the cable along a path from an entry of the apparatus to an exit thereof, traction means mounted along the path for driving the cable forward, bending means mounted along the path for bending the cable, and shearing means mounted along the path for severing the cable. In operation, the free end of the cable is bent prior to its insertion into the bore. The bent free end is then driven into bore until it substantially reaches the bottom thereof. The cable is finally severed by the shearing means at the end of the operation.
Patent CA-2109684-C (CA)
Inventor: PUBBEN PETER A
IPC: F16K31/385
Filed: 1993-11-22
Granted: 2002-03-19
Abstract: A faucet control device to provide asepsis and conservation of water consisting of a diaphragm valve block connected inline between the hot and cold water supply and faucet. Pilot hot and cold water pressure from said valve block is routed through three flexible conduit assemblies to a three-way valve remotely located to facilitate operation by knee, foot or elbow. The application of force to the three way valves cycles the diaphragm valve block from the closed to open position while preventing crossflow between the hot and cold water supplies.
Patent CA-2112154-C (CA)
Inventor: SAUL JONATHAN ROBERT
IPC: A47C1/035
Filed: 1993-12-22
Granted: 2004-11-16
Abstract: An improved actuation mechanism is disclosed which is particularly well-suited for incorporation into "high-leg" reclining chairs. The actuation mechanism includes a swing linkage for coordinating the extensible movement of a leg rest assembly in response to reclining movement of a seat assembly with respect to the chair frame. An over-center biasing mechanism is provided for assisting in extending and retracting the leg rest assembly. Furthermore, the actuation mechanism also includes a tilt linkage for permitting the seat assembly to be independently tilted following extension of the leg rest assembly. The actuation mechanism also includes a mechanical stop arrangement for positively defining the limits of retracted and extended movement of the leg rest assembly which, in conjunction with the over-center biasing mechanism, effectively inhibits undesirable droop of the leg rest assembly.
Patent CA-2112346-C (CA)
Inventor: ARNOLD JOHN ERIC
IPC: B60G17/052
Filed: 1993-12-23
Granted: 2003-07-15
Abstract: An airspring piston which combines the features of being easily assembled, providing full air volume utilization which contributes to a low spring rate of an airspring assembly, a rounded outer peripheral edge to facilitate its assembly with a beaded flexible airsleeve and a bead retention lip to retain a beaded airsleeve on the piston in low or no pressure situations. An airspring assembly comprised of the aforementioned piston, a beaded flexible airsleeve and an upper retainer.
Patent CA-2119653-C (CA)
Inventor: ZALTZMAN ARTHUR
IPC: B07B4/08
Filed: 1992-09-23
Granted: 1999-04-20
Abstract: An apparatus (10) for providing a fluidized bed (12) to effect the separation of a mixture of articles (22) having a first density and a second density that is greater than the first density into separate groups. The apparatus (10) includes an inclined trough (12) which is supplied with either a fluidization on medium, such as sand, or a mixture of articles (22) from which a fluidized bed is formed by forcing gas upwardly  therethrough and through the bottom of the trough (12). Where a fluidization  medium is used, the mixture of articles (22) is introduced into the fluidized bed medium so as to be entrained therewith to effect separation as the articles travel in the direction of flow of the fluidized bed medium. Essentially  only vertical oscillatory movement is imparted to the trough to improve the separation and layering where the mixture is fluidized, or to improve the density uniformity where a fluidization medium is fluidized as the bed.
Patent CA-2126169-C (CA)
Title: Golf glove with tee holder
Inventor: HERZOG WILLIAM E
IPC: A63B71/14
Filed: 1994-06-17
Granted: 1997-06-24
Abstract: The improved golf glove of the present invention is constructed to provide convenient, compact, and readily-accessible storage for a golf tee and a ball marker. The glove includes a hand-receiving glove portion having an overlapping flap type closure, a tee holder mounted atop the flap and having a series of channels of elastic or any other suitable material for securing tees in side-by-side relationship, and a retainer into which a ball marker may be easily inserted and removed using one hand. The marker retainer is coupled with the tee-holder and includes a slot for holding the marker base overlying the tee-holder with the tang projecting outwardly.
Patent CA-2128072-C (CA)
Title: Fibrous-reinforced sheet
Inventor: BARROWS WILLIAM D
IPC: D21H17/67
Filed: 1994-07-14
Granted: 2006-02-14
Abstract: A process for forming a highly filled, fibrous-reinforced sheet in which the sheet is formed from an aqueous dispersion of solids which include fibers, filler, and binder and cationic flocculating agent by continuously feeding a stream of such aqueous dispersion onto a moving porous support surface, wherein the filler comprises at least about 50 wt.% of the solids portion of the dispersion, the improvement comprising the use in the aqueous dispersion of a filler consisting essentially of calcium carbonate and a cationic polymeric flocculant having a charge-density of at least about 2 equivalents of cationic nitrogen per kilogram of polymer, and a highly-filled calcium carbonate-containing sheet, and the use of carbon black to impart opacity to paper or sheet that has a white appearance.
Patent CA-2128596-C (CA)
Title: Arrangement for simultaneously interrogating a plurality of portable radio frequency communication devices
Inventor: MANDELBAUM RICHARD
IPC: H04B1/59
Filed: 1994-07-21
Granted: 1999-03-30
Abstract: An updatable, interrogation system is provided for simultaneously interrogating a plurality of portable data cards. Operable over a plurality of radio frequencies, the interrogation system sequentially communicates with each portable data card as it comes within communication range on a first one of the plurality of radio frequencies for determining a unique identification number associated witheach data card. Once the identification number for a card is obtained by the interrogation system, a predetermine transaction, such as deactivating an electronic barrier to entering a limited access area, for the holder of the identified card is initiated. The interrogation system then selects and moves with each card to a different one of the plurality of radio frequencies for completing a data transfer portion of the transaction. The interrogation system simultaneously completes each predetermined transaction of reading from and writing data to each one of the plurality of cards while communicating with each card on the respectively selected ones of the plurality of radio frequencies.
Patent CA-2129319-C (CA)
Title: Magnetic brush development apparatus for toner add/mix dispenser
Inventor: CORRIGAN RICHARD W JR
IPC: G03G15/08
Filed: 1994-08-02
Granted: 2001-04-24
Abstract: A developer dispensing assembly for dispensing developer to an electrostatographic development apparatus has a developer dispensing tube, a toner supply at a first end of the tube, a developer supply adjacent the toner supply, an auger to transport toner and developer from the first end of the tube to the opposite end of the tube, the developer dispensing tube having an array of developer dispensing apertures arranged in a geometric pattern having a spatial relationship with respect to each other to dispense toner enriched developer through the apertures to the development apparatus at a substantially uniform dispensing profile as said developer and toner are transported from the first end of the tube to the opposite end of the tube for varied feed rates of developer and toner to the dispensing tube.