baber/WOPTO huggingface dataset:
Patent CA-2029804-C (CA)
Title: Motorized sheet film cartridge
Inventor: KHALID NAJEEB ASHRAF
IPC: G03B27/58
Filed: 1990-11-13
Granted: 1996-06-18
Abstract: A motorized sheet film cartridge comprises a light proof housing which defines an opening in its top wall.  A refillable tray containing stacked sheet films  is  slidable  in  the  housing.     The  housing includes  a  slidable  door  which  displaces  in  a longitudinal direction horizontally over the tray and its content of sheet films between open and closed positions thereof.   In its closed position, the door closes the housing opening,    whereas in its open position, sheet films contained in the housing can be removed therefrom through the opening.   The door is operated by a reversible   DC motor which drives a pair of endless chains provided on each longitudinal side of the door for displacing the door between its open and closed positions.   The motor is actuated by an external computer to appropriately open or close the door.   The computer also verifies that the door is closed except when film is being loaded in the cartridge or unloaded therefrom through the opening. The cartridge is removable and portable.  The tray is lockable in its retracted position in the housing. Labels are provided on the cartridge to indicate if it contains exposed or unexposed films.
Patent CA-2033360-C (CA)
Title: Injection moldable plastic laps
Inventor: ROTENBERG DON H
IPC: B24B37/00
Filed: 1990-12-28
Granted: 2001-10-30
Abstract: A lap used for the grinding, fining and polishing of glass and plastic lenses is constructed of a one-piece injection-molded reinforced polymer body. The front surface of the lap is curved and adapted to receive an abrasive pad.      The rear of the lap has a skeletal rib structure of projecting interconnected ribs. Polymers suitable for forming the lap include various crystalline polymers and copolymers having adequate chemical resistance, strength, rigidity and thermal resistance.
Patent CA-2034741-C (CA)
Title: Therapeutic antibody based fusion proteins
Inventor: FELL HENRY P JR
IPC: A61K47/48
Filed: 1991-01-22
Granted: 2002-03-12
Abstract: The present invention relates to a system for the generation of antibody fusion proteins which has utility in the production of recombinant molecules that possess novel, clinically relevant biological activity. The antibody fusion proteins of the invention may be used therapeutically to deliver biologically active ligands to a desired tissue.      In particular embodiments of the invention, the antibody fusion protein comprises a biologically active ligand which is a lymphokine, including, in a specific embodiment, interleukin-2. Because interleukin-2 induces lymphocyte proliferation, fused antibody that targets interleukin-2 (IL-2) to a malignant or infected tissue can produce localized amplification of the immune response toward the diseased tissue, and thereby facilitate the destruction of the infected or malignant tissue. In a specific embodiment of the invention, a fused antibody is produced which comprises a variable region of the anti-tumor antigen monoclonal antibody L6 and active IL-2.      Additional embodiments of the invention relate to fused antibodies which comprise an immunoglobulin variable region and a biologically active ligand which is a-non-lymphokine cellular factor. In a specific embodiment of the invention, a fused antibody is produced which comprises a variable region of the anti-tumor antigen monoclonal antibody L6 and active platelet factor 4, a molecule associated with antagonism of angiogenesis, inhibition of suppressor T lymphocyte development, chemotaxis and heparin binding.
Patent CA-2041023-C (CA)
Title: Photocurable elements and flexographic printing plates prepared therefrom
Inventor: GOSS WILLIAM K
IPC: B41N/
Filed: 1991-04-23
Granted: 2002-03-12
Abstract: Photocurable elements which are useful for preparing flexographic printing plates are provided which comprise a printing layer and a contiguous base layer, the printing layer comprising about 40 to 95 parts by weight of an elastomeric block copolymer, about 5 to 60 parts by weight of a second elastomeric polymer which is incompatible with the block copolymer, a photopolymerizable monomer, and a photoinitiator. The printing layer preferably also comprises an actinic radiation scattering and absorbing pigment.      Also provided are relief printing plates prepared from the photocurable elements. The printing plates have a tack-free surface having excellent ink transfer properties, abrasion resistance, and solvent resistance.      A high level of exposure latitude may also be provided in the photocurable elements of the invention.
Patent CA-2047470-C (CA)
Title: Method of operating a communications system, a communications system and a secondary station for use in the system
Inventor: OWEN FRANK CHARLES GWYN
IPC: H04W24/00
Filed: 1991-07-19
Granted: 1999-11-23
Abstract: A method of operating a communications system, particularly a FDM-TDD cordless telephony system, in which, in order to expedite handover, a portable secondary station builds up a record of the status and quality of the other FDM channels in the system by every l in n (where n is an integer greater than one) TDD frames monitoring another FDM channel. The value of n is adaptive in that, as the quality of its existing channel deteriorates, the value of n decreases, thereby updating its record more rapidly. At handover, the secondary station is able to choose immediately an acceptable alternative channel, thereby avoiding the time overhead of scanning all the other FDM channels.
Patent CA-2050045-C (CA)
Title: Pharmaceutical, vaginal applicable preparation and a process for its preparation
Inventor: HEUSSER JEAN
IPC: A61K47/32
Filed: 1991-08-27
Granted: 1999-04-06
Abstract: The pharmaceutical, vaginal applicable preparation is characterized in that it contains, homogeneously sub-divided, at least one in water soluble polyvinyl alcohol, at least one component A, selected from the group consisting of wetting agents, non-ionic surface active agents and dispersing agents, as well as at least one active component B for the local treatment of sexual transmissible or transmitted, respectively, diseases, and/or for vaginal affections, and occasionally one or more auxiliary agent(s), and in that it is in the form of a film having a thickness of the layer of from 0.05 to 0.5 mm, especially from 0.06 to 0.2 mm, preferably from 0.07 to 0.15 mm.
Patent CA-2051058-C (CA)
Title: Quick response adjustable shock absorber and system
Inventor: FURRER FREDRICK J
IPC: B60G17/015
Filed: 1991-09-10
Granted: 1995-05-09
Abstract: A monoflow shock absorber (30) is provided with a blow off valve (104) which provides the principal flow restriction during both extension and compression of the shock absorber (30).  The force biasing the blow off valve (104) closed is controlled by a control piston (124) which is connected to the blow off valve plate (104) by a rigid, solid rod (108).  The piston (124) responds to a pressurized control fluid, the pressure of which is selected by a high speed pressure regulating device such as a servo valve (20).  This system provides high speed adjustment of the damping force of the shock absorber (30), substantially independently of the stroking speed of the shock absorber (30).  The shock absorber (30) includes a cylinder (40) in which a working piston (58) moves, and the cylinder (40) is closed at one end with an inner cylinder head assembly (44) made up of a body (46) and a cap (48), which define a manifold (56) therebetween.  An external heat exchanger (160) is coupled to the base of the shock absorber (30) to receive working hydraulic fluid which is passed through the blow off valve (104), and to return the working hydraulic fluid to the shock absorber (30) after passage through the heat exchanger (160).
Patent CA-2052349-C (CA)
Title: Communication control system using an asynchronous transfer mode network.
Inventor: KOJIMA MUTSUMI
IPC: H04L12/70
Filed: 1991-09-27
Granted: 1998-08-25
Abstract: A communication control system using an ATM network and constructed by a small number of virtual connections.   Fixed or semi-fixed virtual connection connect each user interface and a corresponding connectionless service processor and interconnect the connectionless service processors.  A data packet received from a user terminal is converted into an ATM cell by the user interface and delivered to the connectionless service processor through the virtual connection.   In the connectionless service processor, an ATM cell is transferred into a virtual connection located in the direction in which the destination user interface is provided to thereby carry out routine to the ATM cell.
Patent CA-2053034-C (CA)
Inventor: FUJII MICHIMASA
IPC: H01M50/191
Filed: 1991-10-08
Granted: 1997-12-02
Abstract: An excellent stable sodium-sulfur cell having a high mechanical strength and a very long life is provided.  The cell eliminates formation of cracks in a joining portion of the solid electrolyte tube and the insulative ring of the cell with the aid of a solder glass filled in a gap between the solid electrolyte tube and the insulative ring, preferably with the aid of a tapered portion formed at at least one of the solid electrolyte tube and the insulative ring, thereby to completely obviate a direct reaction of active substances of the positive electrode and the negative electrode, overheat and destruction of the cell.          The sodium-sulfur cell, comprises a solid electrolyte tube, an insulative ring, a gap of 100-500 µm formed between the solid electrolyte tube and the insulative ring, and a solder glass filled in the gap for joining the insulative ring to the solid-electrolyte tube.
Patent CA-2054962-C (CA)
Inventor: PRESLICKA ALAN JOSEPH
IPC: F01N1/08
Filed: 1991-11-05
Granted: 2002-10-22
Abstract: A vehicular exhaust system muffler including a reversing unit sub-assembly having spaced apart internal panels; and flow tubes that extend between the internal panels and that have their ends mechanically locked within flanged apertures in the internal panels. A sheet metal wrapper is formed around the peripheries of the panels so that the wrapper is in contact with but is metallurgically unbonded to the panels and so that ends of the flow tubes are adjacent to the side edges of the wrapper.      End cap sub-assemblies are assembled onto each end of the reversing unit sub-assembly and wrapper.      Each end cap sub-assembly includes an end panel having an aperture surrounded by a flange that projects from one side surface of the end panel, and an end tube that extends through the end panel flanged aperture. One end of each end tube has an outer diameter selected such that the one end may be loosely, telescopically and overlappingly fitted within the adjacent end of the adjacent flow tube.      The overlapped ends of the end tubes and the flow tubes are mechanically locked together by a circumferential skewed bead formed in the overlapped ends, where the plane of the skewed bead is at an angle less than ninety degrees with respect to the central longitudinal axis of the overlapped ends.      This mechanical locking maintains the relative axial positions of the overlapped ends and resists relative movement between the overlapped ends and between the internal panels and the wrapper due to the application of torsional and axial forces that the tubes experience during the assembly of the muffler. The end tubes are also mechanically locked within the end panel apertures. This mechanical locking includes a continuous, circumferential bead that is formed in the part of the end tube adjacent to side surface of the end panel opposite its flanged aperture and whose plane is at an angle of ninety degrees with respect to the longitudinal axis of the end tube; and a series of spaced apart, circumferential aligned elongated deformations in the overlapped portion of the end tube and the end panel flange, where the plane of these deformations is at an angle of ninety degrees with respect to the longitudinal axis of the end tube and where the major axes of the deformations are aligned with the plane of the deformations.
Patent CA-2068084-C (CA)
Title: Push-pull apparatus and method for web cutting and trim strip removal
Inventor: LITTLETON FRANCIS JOHN
IPC: B26D7/18
Filed: 1992-05-06
Granted: 1996-11-19
Abstract: An improved device for cutting a single or multiple layer continuous web is equipped with a closed-loop, fan-driven air system to "push" air onto the leading edge of the continuous web and "pull" air from about the knife edges to capture the waste material produced by the removal of blank portions. Chambers in the knife roll assembly direct positive air pressure continually to the leading edge for reliably guiding the web into subsequent machinery. Additional chambers direct suction to the waste material at the cutting operation to restrain the waste material within the knife roll assembly for most of the rotation of the knife assembly and to transport waste material to a disposal system including a cowl, which is maintained at a substantially greater suction.
Patent CA-2072236-C (CA)
Title: Adjustable meter setter
Inventor: HUNT MITCHELL
IPC: G01F15/18
Filed: 1992-06-24
Granted: 2000-05-02
Abstract: A setter for a water meter comprises a pair of L-shaped pipes which are positioned in reversed relationship with their horizontal legs connected between a water supply line and a water distribution line. The horizontal legs are clamped in side by side relationship to vary the distance between the vertical legs.      Adjustment of the clamp permits the setter to accept meters of different size. All joints are threaded, thereby avoiding the use of solder and the consequent danger of lead contamination.
Patent CA-2080081-C (CA)
Inventor: NAKAGAWA YOSHIKAZU
IPC: H01L29/812
Filed: 1992-10-07
Granted: 1997-05-20
Abstract: First    and    second    high-resistivity    compound semiconductor channel layers are formed between an undoped compound semiconductor layer and a doped compound semiconductor layer having an electron affinity smaller than the undoped compound  semiconductor  layer.    The  first high-resistivity compound semiconductor channel layer is adjacent to the doped compound semiconductor layer,  and has an electron affinity distribution  that  increases  toward  the  undoped  compound semiconductor layer.   The second high-resistivity compound semiconductor channel layer is located between the first high-resistivity  compound  semiconductor  channel  layer  and  the undoped compound semiconductor  layer,  and has an electron affinity  distribution  that  decreases  toward  the undoped compound semiconductor layer.  A gate electrode and cap layers are formed on the doped compound semiconductor layer.  Source and drain electrodes are formed on the respective cap layers.
Patent CA-2080392-C (CA)
Title: Game apparatus
Inventor: JESSEN LEWIS
IPC: A63F1/10
Filed: 1992-10-13
Granted: 1995-10-10
Abstract: The game apparatus of the present invention comprises a plurality of game cards with each game card having an indicia bearing front and rear face.  The front face of each card includes a pictorial representation and the rear face has a worded description of that particular pictorial representation.  The game apparatus further includes a card support for supporting the cards individually in a generally upright position with the pictorial representation on the front face of each card in an exposed position and the worded description on the rear face of each card being viewable from the rear of the card support without having to remove the card from the card support.  The players of the game include one guesser at least one bluffer and a truth teller.  The bluffers and the truth teller view the back of the card.  The bluffers then give an inaccurate statement and the truth teller gives an accurate statement as to the pictorial representation on the card.  The guesser is awarded points by his/her ability to determine who is a bluffer and who is a truth teller. In order to make this distinction, another feature of the game is the provision of player identifying members, all of which appear identical to the other players who is a bluffer and who is a truth teller.  The player identification members are distributed at random for each round of play.
Patent CA-2082946-C (CA)
Title: Synthetic bone matrix
Inventor: KUBERASAMPATH THANGAVEL
IPC: A61F2/28
Filed: 1991-05-22
Granted: 1996-12-10
Abstract: Disclosed is an osteogenic device capable of inducing the formation of endochondral bone in a shape conforming substantially to the shape of the device when implanted in a mammalian host.  The device includes an osteogenic protein dispersed within a porous matrix comprising a polymer of collagen and glycosaminoglycan cross-linked to an Mc value of about 800 to about 60,000.      Also disclosed are a method of inducing mammalian bone growth, and a method of inducing conductive bone growth from viable mammalian bone.
Patent CA-2101207-C (CA)
Inventor: PICCIRILLO DAVID PHILLIP
IPC: F22B37/56
Filed: 1993-07-23
Granted: 1996-05-28
Abstract: A system for automatically controlling a drain valve connected to a sootblower steam piping system utilizes two temperature measurements, one near the steam source and the other near the drain valve.  Comparison of the difference in steam temperature between these two locations with an adjustable temperature setpoint allows the drain valve to be opened to drain condensate and maintain minimum allowable superheat over a wide range of conditions.  The system allows the temperature sensing to "float" with steam source conditions, since it is continuously adjusted to compensate for steam source temperature and ambient temperature changes.
Patent CA-2106073-C (CA)
Title: Composition for promoting tissue repair and regeneration
Inventor: RUTHERFORD ROBERT B
IPC: A61K45/06
Filed: 1992-03-12
Granted: 2003-09-30
Abstract: Disclosed is a method for the regeneration of tissue, the treatment of external wounds and the treatment of periodontal dis-ease comprising applying to the affected tissue an effective amount of a composition comprised of platelet-derived growth factor (PDGF) and an anti-inflammatory compound. The presence of the anti-inflammatory compound potentiates the activity of PDGF in stimulating cell growth, thereby enhancing tissue regeneration and/or wound healing.
Patent CA-2108844-C (CA)
Inventor: FARLEY HERB M
IPC: B65G23/04
Filed: 1993-10-20
Granted: 1997-02-25
Abstract: A feeder assembly for a combine including a conveyor having a plurality of laterally spaced driving chains entrained about and supported by a pair of for-and-aft spaced lateral supports.  An elastomeric assembly is removably fitted about and is adapted for rotation with one of the supports to define a replaceable wear surface for the support while attenuating noise generated by the feeder assembly during operation thereof.
Patent CA-2108914-C (CA)
Inventor: RINGGENBERG PAUL D
IPC: E21B23/00
Filed: 1993-10-21
Granted: 1997-06-24
Abstract: The present invention provides an apparatus and method for testing a  subterranean formation.   The  inventive  apparatus comprises an internal-external differential pressure operated circulation tool,  an external  pressure operated drill  stem testing tool, and an external pressure operated formation testing tool.  The drill stem testing tool is positioned in the inventive apparatus beneath the circulation tool and the formation testing tool  is positioned in the apparatus beneath the drill stem testing tool.  In the method of the present invention, a testing string comprising the inventive apparatus is run into a well bore.
Patent CA-2109549-C (CA)
Inventor: INOUE YUKIHIKO
IPC: B29C67/24
Filed: 1993-11-19
Granted: 2001-01-16
Abstract: The present invention provides high density artificial stone with physical properties similar to those of natural stone and having excellent and beautiful external appearance as well as a method to produce same.      More particularly, the present invention provides high density artificial stone consisting of 10 to 70 mesh inorganic fine particles from natural stone and the like which are mixed with 100 mesh or above inorganic very fine particles to the weight ratio ranging from 0.5 : 1 to 5 : 1, jointly accounting for at least 85 % of the weight of the final product, containing 15 % or less resins, wherein each raw material component is uniformly distributed and the fine particles from natural stone and the like are exposed on the surface of the product.
Patent CA-2113071-C (CA)
Inventor: GUDMUNDSSON JON S
IPC: C10L3/06
Filed: 1991-07-08
Granted: 2001-09-11
Abstract: Method for the production of gas hydrates for storage and transportation of hydrate forming gases, The gas is pressurized and cooled, whereupon the gas (1b) is supplied to a vessel (6), to which water (7) is added simultaneously to the vessel (6) to foam fine water droplets that are dispersed in the gas (1b) supplied. The temperature and pressure in the vessel (6) are adjusted to pro-duct hydrate from water and gas. The gas (1b) supplied and the water droplets (7) react to form hydrate (8a); then the hydrate is then withdrawn from the reactor (6), optionally cooled in a cooling apparatus (11), and then passed to an agglomeration step (12) to agglomerate the hydrate (8a), thus increasing the density of the hydrate (8a) and to embed more gas in the interstices between the hydrate particles (8a). The agglomerated hydrate particles (8a) are transported to a suitable transportation unit or storage con-tainer to transport/store the hydrate at adiabatic conditions at atmosphere pressure or at a slight gauge pressure at a temperature below 0°C, preferably at minus 10°C to minus 15°C.
Patent CA-2113145-C (CA)
Title: Analog multiplier using quadritail circuits
Inventor: KIMURA KATSUJI
IPC: G06G7/164
Filed: 1994-01-10
Granted: 1998-04-28
Abstract: A multiplier containing first and second quadritail cells.          The first quadritail cell has a first pair of first and second transistors, a second pair of third and fourth transistors, and a first constant current source for driving the first and second pairs.  The second quadritail cell has a third pair of fifth and sixth  transistors,  a  fourth  pair  of  seventh  and  eighth transistors, and a second constant current source for driving the third and fourth pairs.  Each of the first to fourth pairs has output ends coupled together.  A first input voltage is applied between input ends of the first and fourth transistors and is applied between input ends of the fifth and eighth transistors.  A second input voltage is applied between input ends coupled together of the second and third transistors and the input ends coupled together of the sixth and seventh transistors.  The output ends of the first and fourth pairs are coupled together to form one of differential output ends, and those of the second and third pairs are coupled together to form the other of the differential output ends thereof. At least one of the first and second input voltages can be expanded in linear range at a low power source voltage such as 3 or 3.3 V.
Patent CA-2115842-C (CA)
Inventor: JOO WOON YONG
IPC: H04M17/02
Filed: 1993-06-18
Granted: 1997-12-30
Abstract: A coin/credit operated public telephone is capable of making local, toll, and international calls using coins, credit card, or IC card and also of making a voice announcement regarding its operation method to the caller through a handset (1).  Moreover, it provides graphic/character information through the LCD (10) and can transmit fault status that has been detected as a result of a highly reliable self-diagnosis carried out by receiving control signals from a remotely located central management system.