baber/WOPTO huggingface dataset:
Patent CA-2048484-C (CA)
Title: Absorbents having enhanced surface area
Inventor: METEYER THOMAS EDWARD
IPC: C08F8/00
Filed: 1991-08-06
Granted: 2001-07-31
Abstract: Highly crosslinked styrenic copolymers are treated to enhance their surface area by reacting residual vinyl groups in the copolymers in the presence of water or other non-swelling liquid and a Lewis-acid catalyst at elevated temperature
Patent CA-2049819-C (CA)
Title: Operating modes control process for an automatic water filtration device mounted on tubular membranes
Inventor: ANSELME CHRISTOPHE
IPC: B01D61/14
Filed: 1991-08-26
Granted: 1999-02-02
Abstract: A method of changing operating modes in automatic water filtering apparatus comprising inside-skin tubular membrane modules for filtering water, the possible filtering modes being: dead-end filtering; cross-flow filtering; and cross-flow filtering with continuous purging; both cross-flow filtering modes including recirculation in a loop; wherein two types of triggering are provided for filter membrane backwashes, a first one of said types being related to time periods between two backwashes, which time periods are predetermined for each mode of filtering, and a second one of said types being related to reference values of an operating parameter of the automatic apparatus, which values are predetermined for each mode of filtering; with the mode of filtering being changed after a backwash has been triggered in response to one of the reference values, with changes taking place in the following order: dead-end filtering, cross-flow filtering, cross-flow filtering with continuous purging, or vice versa.
Patent CA-2056471-C (CA)
Title: Infrared asphalt heater
Inventor: ST-LOUIS ERIC R
IPC: E01C23/06
Filed: 1991-11-28
Granted: 1999-02-16
Abstract: An infrared asphalt cold seam heater vehicle is self-propelled and has sidewardly extending infrared heating chambers for heating existing asphalt to soften it for bonding with freshly laid asphalt to minimize premature failure.   The heater has heating chambers attachable to either the right or left side of the vehicle.
Patent CA-2068073-C (CA)
Title: Encoding of motion picture signal
Inventor: MURATA ERI
IPC: H04N19/503
Filed: 1992-05-06
Granted: 1998-10-06
Abstract: A valid/invalid detection section 1 generates an original valid block map based on a difference between frames.  The current and previous valid block maps are weighted within weight sections 2 and 3 respectively and are thereafter summed up to compose them.  After isolated valid blocks are removed from the composed valid block map within a segmentation section 5, it is determined whether or not a moving object exists and the direction of the moving object is determined based on the distribution of the valid block map.  If a significant movement is detected, then blocks around the object are weighted at the movement direction side.  Another segmentation section 7 determines valid blocks with reference to interest blocks and neighbor blocks, and isolated invalid block section 8 removes isolated invalid blocks to generate a complete valid block map.  Encoding is performed based on the complete valid block map.
Patent CA-2068685-C (CA)
Title: Needle threading device
Inventor: BOHAYCHUK JOSEPH
IPC: D05B87/00
Filed: 1992-05-14
Granted: 1994-05-31
Abstract: ABSTRACT      A  needle threading device comprising a body portion and  at least  one elongate needle threading element,  integrally  formed with  the  body to extend  laterally  outwardly  therefrom.   The element  includes  an  elongate,   thin,  substantially  U-shaped section with a central elongate aperture.  The size and thickness of the element being such that in use it can pass through the eye of  a  needle.   In  a  preferred  configuration  of  the  device according to the invention,  the needle threading element extends through said body to form a second needle threading section.  The latter  section  being formed with a taper and  provided  with  a hooked end.
Patent CA-2068970-C (CA)
Title: Agent for transdermal administration containing ergoline derivatives
Inventor: RIEDL JUTTA
IPC: A61K31/00
Filed: 1992-05-19
Granted: 2005-09-27
Abstract: An agent for transdermal administration contains ergoline derivatives and a pharmaceutically acceptable carrier effective for transdermal administration optionally in combination with one or more penetration-enhancing agent or agents. Ergoline derivatives, such as lisuride, are pharmaceutically important but are not well suited for oral administration. The present invention provides an effective transdermal administration route.
Patent CA-2069381-C (CA)
Inventor: TAKAHASHI KENJI
IPC: G11B7/26
Filed: 1992-05-25
Granted: 2002-01-22
Abstract: An optical disc includes a disc base plate of a light-transmitting synthetic material having a recess for mounting a magnetic plate, and a holding part, integral with the disc base plate, for loosely holding the magnetic plate mounted in the recess with respect to the disc base plate. It is possible with the present optical disc to prevent distortion of the disc base plate otherwise caused by the difference in thermal expansion coefficients of the two components to inhibit double refraction of the disc base plate otherwise caused by such distortion to maintain good recording/reproducing characteristics.
Patent CA-2069566-C (CA)
Title: Concrete pouring and leveling devices and method of using
Inventor: FAHRENKROG WILLIAM H
IPC: E04G21/10
Filed: 1992-05-26
Granted: 1996-01-09
Abstract: Concrete pouring and leveling devices and method of using them consisting of vertically placed rigid cylindrical tubes or pipes having reusable yokes inserted at their tops to support screed pipes placed horizontally along the predetermined desired elevation of the concrete surface.
Patent CA-2073347-C (CA)
Title: Apparatus and method for generating quadrature signals
Inventor: HILBERT MARK F
IPC: H03L7/081
Filed: 1991-12-18
Granted: 1995-05-09
Abstract: A quadrature signal generator provides differential in-phase signals, (I, I'), and differential quadrature-phase signals, (Q/ Q'), in precisely a 90° quandrature relationship. A phase-locked loop configuration (100) comprises a voltage controlled phase-shift network (103) and a novel exclusive-OR phase detector (109). The voltage controlled phase-shift network (103) generates a phase shift for the differential quadrature signals, (I, I') and (Q/Q'). The novel exclusive-OR phase detector (109) determines the phase error between differential quadrature signals, (I, I') and (Q/Q'). The phase error is related to a voltage control signal VCNTL, coupled back to the voltage controlled phase-shift network (103) to maintain a precise 90° phase relationship be-tween differential quadrature signals, (I, I') and (Q/Q').
Patent CA-2077171-C (CA)
Title: Recording apparatus
Inventor: MASAKI TOMOAKI
IPC: G06K15/00
Filed: 1992-08-28
Granted: 1998-09-29
Abstract: A power is supplied to a CPU without regard to an on/off-state of a power switch.  In the off-state, the CPU renders a control signal indicating that an apparatus does not accept data, to an active state or a high impedance state to inform to a host.  When data is received, the state is switched to the on-state for recording operation.  The received data is stored in a memory, and when the state is switched to the on-state, the data is read from the memory for recording operation.       In this manner, drop of record data due to data transmission from the host in the off-state of the power switch is prevented.
Patent CA-2079486-C (CA)
Title: Chelator compositions comprising alpha- diamine compounds
Inventor: BUSH RODNEY DEAN
IPC: C07D333/22
Filed: 1991-04-09
Granted: 1999-11-02
Abstract: The present invention involves photoprotective compositions which are useful for topical application to prevent damage to skin caused by acute or chronic exposure to ultraviolet light comprising chelating agents having formula (I) wherein each -R1 is independently selected from the group consisting of alkyl, aryl and heteroaryl, or the -R1's are covalently bonded together to form a cyclic alkyl; -R2 and -R3 are -OR4; in which case there is no bond or a polar bond between -R2 and the nitrogen covalently bonded to -R3, each -R4 being independently selected from the group consisting of hydrogen, alkyl, aryl and heteroaryl except that both -R4 are not methyl when both -R1 are furyl; or -R2 is -O- and is covalently bonded to the nitrogen which is covalently bonded: to -R3; and -R3 is -O- re furyl or the -R1's here being a + charge on the nitrogen to which it is bonded) of nil; -NR2, and -NR3 are in amphi configuration when both are -OH, and when both -R1 are furyl or the -R1's are covalently bonded together to form a cyclohexanedione structure. Methods for using such compositions to prevent damage to skin caused by acute or chronic exposure to ultraviolet light are also involved.
Patent CA-2080062-C (CA)
Title: Method of and apparatus for packaging a beverage in a container
Inventor: JONES MICHAEL EDWARD
IPC: B65B31/04
Filed: 1992-10-07
Granted: 2002-07-30
Abstract: A method of and apparatus for packaging a beverage in a container 1 having a primary chamber and a relatively smaller secondary chamber which communicates with the primary chamber by way of a restricted orifice has the exterior of the container maintained at atmospheric pressure. The container such as a can 1 to be charged with beer is engaged within a filling head block 24 through nozzles 35 from which beer 9 is to flow into the can 1 from a bowl 8.        Prior to filling the can 1 is pressurised through the head 24 with nitrogen gas to greater than atmospheric pressure and subsequently evacuated to atmospheric pressure by control of valves 32, 33. Such pressurisation and evacuation may be repeated sequentially to dilute the atmospheric oxygen content within the primary and secondary chambers of the can 1 where the oxygen has negligible effect on the beer which is to be sold in the can. A gas exchange conduit 40 extends between the bowl headspace 12 and the can 1. Conduit 40 has a port 41 of a gas control valve 55 which port 41 is closable by movement of lever 60.        A beer flow valve 37/46 controls flow of beer 9 from the bowl through nozzles 35. During pressurisation of the can 1 with nitrogen gas the lever 60 is adjusted to maintain closed the part 41 of the gas flow valve and the beer flow valve 37/46 to ensure that high pressure gas in the can 1 cannot flow by way of the gas exchange conduit 40 into the bowl headspace 12 and again flow through the nozzles 35 into the beer 9 in the bowl 8.
Patent CA-2088144-C (CA)
Inventor: HARLEY DAVID N
IPC: F16B12/02
Filed: 1991-07-16
Granted: 1995-01-24
Abstract: A two-part fastening device for fastening two panels together is provided of the type comprising a rotatable drum with at least one camming surface and a pin with a head adapted to engage with the camming surface.  The pin is secured in one panel to be fastened and the rotatable drum positioned in the other panel.  The head of the pin is passed into the drum member which is then rotated so that the camming surface acts to pull the head of the pin inwardly, thus drawing the two panels together.  The head of the pin is provided with protrusions which cooperate with the rotatable drum so that locking engagement of the fastening device can be achieved.
Patent CA-2088359-C (CA)
Inventor: PELTON BRUCE ALAN
IPC: H01R33/22
Filed: 1991-07-29
Granted: 1998-08-11
Abstract: L'objet de la présente invention est un dispositif utilisé pour verrouiller un adaptateur de lampe fluorescente dans une douille de lampe à incandescence à vis comportant un module de base (12) défini par un fond et une paroi périphérique. La paroi périphérique du module de base (12) présente une surface interne (62) et une surface externe (64); une ouverture (66) est pratiquée à travers la paroi périphérique (60). Un composant à vis mâle (70) tourne librement à l'intérieur du module de base (12) et de la douille de lampe. Un outil (84) est utilisé pour visser le composant mâle (70) à l'intérieur de la douille de type standard (74) et permettre l'insertion et le retrait de l'adaptateur dans la douille de type standard (74).
Patent CA-2090422-C (CA)
Title: Pharmaceutical composition of florfenicol
Inventor: APELIAN HENRY M
IPC: A61K31/165
Filed: 1991-08-27
Granted: 1996-02-13
Abstract: An injectable pharmaceutical composition for veterinary use is disclosed comprising Florfenicol, N-methyl-2-pyrrolidone, polyethylen glycol and a viscosity reducing agent. The composition is chemically and physically stable, exhibits constant blood levels and does not produce undesirable side effects.
Patent CA-2092183-C (CA)
Title: Methode de transfert de phase pour detergents glucamidiques
Inventor: CONNOR DANIEL STEDMAN
IPC: C11D1/52
Filed: 1991-09-25
Granted: 1998-08-18
Abstract: L'invention porte sur une méthode pour produire un surfactif à base de glucamide linéaire, consistant à faire réagir une N-alkylglucamine, p. ex. la N-méthylglucamine et un ester gras, p. ex. de l'huile de noix de coco, en présence d'un agent de transfert phasique, généralement un surfactif non ionique et de préférence un produit préformé du procédé; on privilégie dans cette réaction la présence d'un catalyseur alcalin.
Patent CA-2093652-C (CA)
Title: Molding of calcium silicate having high strength and its manufacturing method
Inventor: KANEKO KATSUAKI
IPC: C04B14/42
Filed: 1991-08-09
Granted: 1997-12-09
Abstract: A calcium silicate molding having high strength, and properties similar to a natural timber, is obtained by mixing tobermorite, calcium silate hydrate and quartz with the addition of 2 to 10% by weight glass of each of glass fiber and pulp, the resulting material having a Ti/Qi peak ratio obtained by powder X-ray diffraction between 0.1 and 1.0, and an absolute bulk density in the range 0.3 to 0.7 g/cc.
Patent CA-2101138-C (CA)
Title: Syringe apparatus with detachable mixing and delivery tip
Inventor: FISCHER DAN E
IPC: A61C5/06
Filed: 1993-07-22
Granted: 1995-12-19
Abstract: A syringe device having a barrel enclosing a first chamber therein containing coaxially aligned primary and secondary plungers.  A connectable mixing and delivery tip encloses a second chamber therein and is connected to the barrel by a coupling.  A slidable valve having an aperture therethrough to allow passage of air into and out of the secondchamber is disposed between the two chambers.  The primary plunger is slidable out one end of the syringe for the selective application of pressure into the syringe barrel.   As the primary plunger is urged down into the syringe barrel, air is forced around the secondary plunger and through the valve aperture into the second chamber wherein the substances  contained therein are mixed by turbulent aeration.  Continued application of pressure on the primary plunger drives the secondary plunger into the slidable valve to plug the aperture in the valve thereby ceasing  the  agitation  of  the  contents  in  the  second chamber.  Further urging of the primary plunger drives the secondary plunger and the slidable valve up into the second chamber so that the mixed contents are expelled out of the syringe device through a delivery tip. With such a syringe mixing apparatus, substances can be mixed and expelled from the syringe by continued movement of the primary plunger into the syringe barrel.
Patent CA-2110589-C (CA)
Title: Spread spectrum wireless telephone system
Inventor: VANDERPOOL JEFFREY S
IPC: H04J13/00
Filed: 1992-06-02
Granted: 2001-10-23
Abstract: A system for accessing a telephone system (101) in which a set of user stations (102) are matched with a set of base stations (104) for connection to a telephone network (103). Each user station comprises a spread-spectrum transmitter (109) or receiver (108) and is capable of dynamic connection to selected base stations (104). User stations may use CDMA, FDMA, TDMA or other multiple-access techniques to obtain one or more clear communication paths to base stations. Base stations are coupled to each other by means of a private exchange telephone system or other small business telephone system (such as a PBX, Centrex, or key-type system) so as to couple user stations in calls outside the telephone network. User stations may also be coupled directly or indirectly to the telephone network on their own or by another access path, such as narrowband or spread-spectrum cellular telephone circuits.
Patent CA-2116131-C (CA)
Title: A method for controlling transmission power in a communication system
Inventor: HALL SCOTT MAURICE
IPC: H04B7/005
Filed: 1993-06-29
Granted: 1998-01-27
Abstract: The transmit power margin or frame error rate for each subscriber in the system is measure (62) to determine if any "bad" subscribers (63), those subscribers with transmit power margins or frame error rates that cross a threshold, are in the system. If the system is under capacity (64), the threshold level is set to the first threshold (65) and the signal-to-noise ratio is incremented (66). If the system is at marginal capacity (68), the threshold transmit power margin is set to a second threshold (69) and the system is closed to new calls (72). If the system is over capacity: the threshold transmit power margin is set to a third threshold (70); the system is closed to new calls (72); and the signal-to-noise ratio is decremented (71).
Patent CA-2117229-C (CA)
Title: Exercise apparatus and method of operating exercise apparatus
Inventor: RAWLS R LEE
IPC: A63B21/002
Filed: 1994-03-08
Granted: 1999-03-16
Abstract: An exercise apparatus having a vertically movable weight, and an input pedal mechanism engaged by the user to input an input power with a unidirectional exercise force at a user-selected velocity for moving the weight upward.   Also included is a brake applying a negative braking power with a unidirectional braking force opposing the exercise force.  The braking power has a braking velocity for permitting downward movement of the weight.  A brake controller controls the application of the brake to maintain the braking velocity at a selected constant velocity for at least a selected portion of the user's exercise time.  A differential member is coupled to the weight and receives the input power and the braking power. The differential member determines a differential between the user-selected velocity and the selected constant braking velocity, and applies the resultant to movement of the weight. If the user-selected velocity is greater than the braking velocity, the weight is lifted, and if the user-selected velocity is less than the selected constant braking velocity, the weight is lowered.  If they match, the weight is maintained in a stationary elevated position.
Patent CA-2117638-C (CA)
Inventor: PODELL HOWARD IRWIN
IPC: A61K8/02
Filed: 1993-03-04
Granted: 2005-05-17
Abstract: An adhesive bandage, wound dressing, suture-like mechanism, or surgical drape for use over a wound is made from a laminate structure of flexible rubber, a hydrophilic hydrogel polymer bonded to one side of the flexible rubber, and an adhesive bonded to the hydrophilic hydrogel polymer along at least a first section of the adhesive bandage, wound dressing, suture-like mechanism, or surgical drape. The adhesive is preferably a hydrogel adhesive with a cellulosic, polyurethane or polyacrylate base, while the flexible rubber is preferably rubber which is pretreated with hydrogel polymer prior to curing. A medicament such as CPC or BAK can be bonded to the hydrophilic hydrogel polymer along the non-adhesive portion of the adhesive bandage, wound dressing or surgical drape to provide slow release medication, and if desired, movable plastic may be provided to cover the adhesive portions. In one embodiment, the adhesive bandage (10) is a laminate comprised of a flexible elastomer (15) to which on one side is bonded a hydrogel polymer coating (20). An adhesive (25) is bonded to at least certain sections of hydrogel polymer coating (20).
Patent CA-2117956-C (CA)
Inventor: FRANKEL RICHARD WILLIAM
IPC: B65G69/28
Filed: 1994-10-12
Granted: 1998-04-21
Abstract: A portable ramp for providing a bridge between a ground level surface and a raised surface. The ramp includes a support plate having a substantially horizontal first portion adapted to rest along an edge of the raised surface. A second portion of the plate extends vertically downward from the first portion and a third portion extends generally outwardly from the second portion in a direction generally toward the ground level surface. The third portion of the plate member supports one end of an angled beam which extends at a generally predetermined angle from the plate to the ground level surface. The opposite end of the beam is supported with respect to the ground level surface by a resilient foot member which provides stability. A traction plate having upwardly projecting portions is attached to a top surface of the beam intermediate the support plate and foot member in order to increase friction and provide traction along the inclined beam.
Patent CA-2118575-C (CA)
Title: Catheter with atraumatic drug delivery tip
Inventor: CHEE URIEL HIRAM
IPC: A61M25/00
Filed: 1993-09-17
Granted: 1998-11-17
Abstract: The catheter with atraumatic drug delivery tip can be used to access remote tortuous blood vessels and to deliver defined doses of medication over a desired length of the accessed vessel. The guidewire of the catheter helps guiding the catheter to a desired location and can be used to control release of medication in axial as well as in radial direction inside the vessel. The catheter is designed with sections of different flexibility.
Patent CA-2119577-C (CA)
Title: Battery with electrochemical tester
Inventor: KUO HAN CHENG
IPC: H01M50/569
Filed: 1992-09-11
Granted: 2000-11-07
Abstract: The present invention relates to an electrochemical cell (50) and a related state of charge indicator (60) comprising an electrochemically generated display (40). The state of charge indicator (60) comprises two electrical contacts (12, 14) and an electrochemically generated display (40) connected therebetween. The display (40) comprises an electrochemical cell (12, 14, 20) that may be permanently connected to a main cell (50) in a parallel configuration via the contacts (12, 14). The condition of the main cell (50) may thus be continuously displayed on the indicator (60).
Patent CA-2120254-C (CA)
Inventor: GLAZER SANFORD A
IPC: B02C23/00
Filed: 1992-10-02
Granted: 2004-03-02
Abstract: A processing system 200 is disclosed that provides for the processing of many forms of waste, such as medical and food waste, that both reduces the volume of waste solids and neutralizes the biological activity of such waste, thereby facilitating the disposal of potentially unhealthy or hazardous materials. Biological neutralization is accomplished by chopping the waste material and mixing it with a circulating stream of fluid such as water that is superheated to a temperature which effects disinfection or sterilization in accordance with the needs of the user. The superheated fluid is maintained substantially in a liquid form to facilitate intermixing with the waste material and absorption thereby in instances of the processing fluid-absorbable materials. The processed waste can be filtered to remove solid particles having a size in excess of a predetermined amount, and the filtrate can be passed into municipal sewer systems. The filtered solids can be disposed of in a conventional manner, as by disposal in land fills, burial, or incineration.
Patent CA-2123295-C (CA)
Title: Air filter for internal combustion engines
Inventor: ANDRESS HEINZ
IPC: F02M35/08
Filed: 1994-05-10
Granted: 2003-10-14
Abstract: An air filter is provided herein for an internal combustion engine which has a filter insert arranged in a housing having a clean air outlet and an unfiltered air inlet which is provided with a screen. The housing also includes an auxiliary unfiltered air inlet which is closed by a normally-closed flap.   The flap opens only under the influence of a negative pressure which is generated in the filter housing if the screen becomes clogged, e.g., because of snow or ice which is entrained in the air stream, so that unfiltered air can enter the housing through the auxiliary air inlet.