baber/WOPTO huggingface dataset:
Patent CA-2043679-A1 (CA)
Title: Preparation of silicon carbide whiskers
Inventor: JENSEN JAMES A
IPC: C30B29/36
Filed: 1991-05-31
Abstract: 1056p (FF)                                           PATENT                   J. A. Jensen & Rosenthal Case 1 PREPARATION OF SILICON CARBIDE WHISKERS                 Abstract of the Disclosure Silicon carbide single crystals are prepared by (1) reacting silica gel, silicic acid or silicon dioxide with an inorganic base and a multifunctional alcohol or a multi-functional phenol to produce a carbon-containing chemically activated silicon compound, (2) mixing the activated silicon compound with carbon black or graphite and (3) heating the mixture to 1300° to 1700°C under a non-oxidizing atmosphere.
Patent CA-2044664-A1 (CA)
Inventor: BROWN CRAIG W
IPC: H02M7/48
Filed: 1991-06-14
Abstract: Abstract of the Disclosure A   switched   multi-tapped   transformer-based   power conversion circuit is disclosed.  A polarity alternator comprising dual switch devices controlled by a microprocessor selectively periodically impresses across a transformer's center-tapped primary winding a voltage from a battery to produce a modified square waveform.  Each of the taps of the transformer's secondary winding synchronously selectively switched by the microprocessor to a common wired-OR junction where the discrete voltage levels combine to produce a stepped approximation of a stored sine waveform.  The switching circuits for each of the taps comprises dual back-to-back series-connected FET switches with diodes shunting each FET's source and drain.   The microprocessor periodically senses the voltage across the primary winding, calculates the voltage across the secondary winding based upon the predetermined turns ratio of the tap that is switched to the common junction and compares the calculated output voltage with a normalized memory-based sine wave representation, thereby to determine when to switch to another tap.          The converter, which operates concurrently as an inverter and a charger, responds in real time to changing DC source and AC load conditions.  A similar converter having a full-wave rectifier on the primary winding side of the transformer is connectable to an AC source and provides for the charging of a connected DC load.
Patent CA-2045159-A1 (CA)
Title: Catheter clamp
Inventor: GROSS JAMES R
IPC: A61M25/00
Filed: 1991-06-21
Abstract: ABSTRACT    A catheter clamp adapted to accommodate catheters of varying diameters, particularly CVP catheters, and which is adapted to secure the catheter to the skin by suturing irrespective of the distance the proximal end of the catheter extends from the body, the clamp being characterized by having top and bottom members hinged at one end whereby to be movable between an open position for receiving the catheter and a closed position for securing the catheter between the two members, the inner surfaces of each of the members being resilient whereby to engage the catheter securely therebetween when the members are brought into the closed position, the bottom member having at least two suturing eyes for suturing to the skin.
Patent CA-2046658-A1 (CA)
Title: Electromagnetic driver and sensor
Inventor: HUSSAIN YOUSIF A
IPC: G01F1/84
Filed: 1990-12-05
Abstract: A shielded electromechanical  device for use in a Coriolis type mass flowmeter for interconverting mechanical energy and electrical en-ergy has a coil assembly (82) connected to its distal end, and a magnetic assembly (72) connected to its proximal end. The magnetic assembly is adapted to interact with the coil assembly. A shield assembly (70, 84) sur-rounds the coil and magnetic assemblies and is adapted to reduce the magnetic field exterior to said shield assembly.
Patent CA-2046726-A1 (CA)
Inventor: JONES BARBARA L
IPC: G01K11/20
Filed: 1991-07-10
Abstract: A temperature measuring device comprises a light emitter, a nitrogen-containing diamond sensor, a light receiver, and lengths of fibre optics which connect the light emitter and the light receiver to the diamond sensor.  The diamond sensor has a base through which the emitted and reflected light pass and sloping surfaces which lead to an apex. The amount of light which is absorbed by the diamond sensor will vary according to the temperature in which the diamond sensor is placed.
Patent CA-2049308-A1 (CA)
Title: Double effect air conditioning system
Inventor: CHRISTENSEN RICHARD N
IPC: F25B29/00
Filed: 1990-03-29
Abstract: An absorption refrigeration system having cooling and heating modes of operation functions with a double-effect or ''split'' refrigeration cycle having approximately the same refrigerant concentration span in each cycle loop. The system includes a novel direct expansion combined evaporator and absorber assembly (16) with improved heat transfer characteristics and with interchangeable liquid flows accomplished through actuation of a conventional reversing valve (78). Also, the system is provided with improved recuperative heat exchangers to further increase system energy conversion efficiencies.
Patent CA-2050406-A1 (CA)
Title: Polyethylene terephthalate compositions and methods of using thereof
Inventor: SMITH HAROLD V
IPC: C08L67/02
Filed: 1991-08-30
Abstract: ABSTRACT      This invention relates to polyethylene terephtalate compositions comprising a reaction product of A PET resin and 0.05 to 5.0 WT % of a copolymer of maleic anhydride, optionally together with pyromellitic dianhydride.     These compositions have improved melt strengths, which allow to apply them especially for extrusion blow-moulding  and foam extrusion.
Patent CA-2050506-A1 (CA)
Inventor: LISCO RICHARD J
IPC: H04B10/02
Filed: 1991-09-03
Abstract: Disclosed is a broadband optical receiver which exhibits low noise and distortion characteristics. An active bias feedback circuit stabilizes the quiescent operating of a low noise amplifier coupled to the receiver photodetector. A transformer matches the impedance of the amplifier to an attenuator.
Patent CA-2052007-A1 (CA)
Title: Radio telephone using received signal strength in controlling transmission power
Inventor: MCGIRR ANDREW E
IPC: H03G3/20
Filed: 1991-09-23
Abstract: A radio telephone uses a signal indicating the strength of received communication signals as a measure of prevailing signal propagation conditions to control the gain of a power amplifier in its transmitter. Where conditions are favorable, the gain can be reduced without deleterious effects on transmitted signals, and with a resulting savings in power drain on the radio telephone's power supply (e. g., batteries).      In this way, talktime on a single battery charge can be significantly lengthened. Where conditions are adverse, e.g., at outlying or fringe areas of a cellular telephone system of which the radio telephone is a station, the gain can be increased to produce stronger transmitted signals, at times extending the effective coverage area of such systems.      Preferably, the output of the power amplifier remains at all times within a power range prescribed by applicable standards, and is increased or decreased within the power range in accordance with prevailing conditions indicated by the received signal strength signal.
Patent CA-2055189-A1 (CA)
Inventor: JESZENSZKI ANDOR
IPC: C07D307/38
Filed: 1991-11-08
Abstract: Abstract The invention relates to a new process for preparing 1-{2-[(5-dimethylaminomethyl-2-furyl)-methylthio]-ethyl}--amino-1-methylamino-2-nitroethylene of the formula (I)                 (I) (generic name: ranitidine), which comprises reacting the diketene imine derivative of formula (II)                 (II) with methylamine.     The most important advantage of the invention consists in that ranitidine can be prepared in a yield of more than 90 % in an outstanding quality by a simple procedure.
Patent CA-2055542-A1 (CA)
Title: Pichia pastoris acid phosphatase gene
Inventor: BUCKHOLZ RICHARD G
IPC: C12N15/55
Filed: 1991-11-14
Abstract: The present invention discloses the Pichia pastoris acid phosphatase gene, which includes the 5' regulatory region, signal sequence, structural gene, and 3' transcription termination sequence.      Also disclosed are methods of using these fragments, which include but are not limited to the secretion of proteins from cells and the regulation of the transcription of DNA. DNA vectors containing the acid phosphatase gene or fragments thereof and hosts transformed with these vectors are also disclosed. Additionally, integrative vectors which direct integration at the Pichia  pastoris PHO1 locus and a method of identifying these disruptants is disclosed.
Patent CA-2055911-A1 (CA)
Inventor: BERNARD WERNER
IPC: G02B6/44
Filed: 1991-11-20
Abstract: Disclosed is an optical transmission cable having one or more cable elements.  Each cable element includes a plurality of optical fibers embedded in the outer surface of a plastic layer applied directly over an antibuckling member.  When the plastic layer is silicone rubber, the optical fibers may be peeled away from the bundle by hand as desired.
Patent CA-2060015-A1 (CA)
Title: Dryer group web transfer region for paper making machine
Inventor: SOLLINGER HANS-PETER
IPC: F26B13/06
Filed: 1992-01-24
Abstract: DRYER GROUP WEB TRANSFER REGION FOR PAPER MAKING MACHINE            ABSTRACT OF THE DISCLOSURE           A dry end of a paper making machine has a plurality of dryer groups each in turn comprised of a plurality of heatable dryer cylinders which alternate with reversal rolls.  A respective support belt meanders past each dryer cylinder and the succeeding reversal roll in each dryer group.  The web to be dried is supported on the side of each support belt to contact the heatable dryer cylinders.  The reversal roll that precedes the first dryer cylinder in each succeeding group serves as a web removal roll which is wrapped by the second support belt of the succeeding dryer group.  The first support belt of the preceding dryer group has the web on the side of the first belt which is toward the removal roll.  The first support belt contacts the second support belt on the removal roll over a smaller part of the circumference of the removal roll than the second support belt.  The removal roll transfers the web from the first support belt to the second support belt at the removal roll. There is an unsupported length of the first support belt from the last reversal roll of the first dryer group to the removal roll in the second dryer group that is of a length that the time of travel of a point on the first support belt between those two rolls is at least 0.05 seconds and preferably between 0.06 and 0.12 seconds. That zone is free of suction devices.  The first support belt and possibly the second or preferably porous dryer wires.  A boundary air layer deflection device opposite the removal roll deflects the boundary layer of air through the first support belt to help deflect the web off the first support belt onto the second support belt at the removal roll.
Patent CA-2068229-A1 (CA)
Title: Substituted quinazolinones bearing acidic functional groups as angiotensin ii antagonists
Inventor: CHAKRAVARTY PRASUN K
IPC: A61P9/12
Filed: 1992-05-08
Abstract: TITLE OF THE INVENTION SUBSTITUTED QUINAZOLINONES BEARING ACIDIC FUNCTIONAL GROUPS AS ANGIOTENSIN II ANTAGONISTS            ABSTRACT OF THE INVENTION        Novel substituted quinazolinones of the formula (I) are useful as angiotensin II antagonists.      (I)
Patent CA-2070763-A1 (CA)
Title: Process for catalytically converting organic compounds
Inventor: TAKATSU KOZO
IPC: C07C29/04
Filed: 1992-06-09
Abstract: ABSTRACT OF THE DISCLOSURE           Catalytic conversion of organic compounds wherein catalysts come into contact with steam is performed efficiently by using a catalyst which comprises an MFI type zeolite having a ratio of SiO2/(Al2O3+Ga2O3) of 20 to 200 in molar ratio, a ratio of Ga2O3/Al2O3 of 0 to 50 in molar ratio and a ratio of peak intensity of SiOH, IS1OH, to peak intensity of acidic OH, IH+ , determined from 1H-NMR, IS1OH/IH+, of 0 to 0.5 and loses little catalytic activity on exposure to steam.
Patent CA-2071778-A1 (CA)
Inventor: JEAN JAU-HO
IPC: C03C14/00
Filed: 1992-06-22
Abstract: LOW DIELECTRIC INORGANIC COMPOSITION FOR MULTILAYER                  CERAMIC PACKAGE A B S T R A C T A ceramic composition for forming a ceramic dielectric body having a dielectric constant of less than about 4.2 at 1 MHz and a linear thermal expansion coefficient of 2.5-3.0 ppm/°C. from room temperature to 200°C.  The composition comprises a mixture of finely divided particles of 20-50 wt.% borosilicate glass, 40-75 wt.% titanium silicate glass and where necessary sufficient amounts of crystalline ceramic material to inhibit the formation of crystalline forms of silica.  The composition can be used with a polymeric binder to produce an unfired green tape which is co-fireable with high conductivity metallurgies such as gold, silver and silver/palladium.
Patent CA-2071951-A1 (CA)
Title: Full-duplex video communication system
Inventor: TANENBAUM RICHARD
IPC: G06F15/00
Filed: 1990-12-13
Abstract: Each terminal (30, 60) in a full-duplex communication system comprises a computer-controlled display screen such as a CRT (62, 32), at least one input means such as a keyboard (64, 34), a mouse (36, 66) or a light pen (38, 68) and bidirectional communication means (40, 70) through which the terminals (30, 60) are interconnected. Each communication means comprises a receiver (78, 48) for receiving display information received at the terminal from the remote terminal(s) and a transmitter (46, 76) for transmitting information to the remote terminal(s) where it is displayed. In accordance with the invention, each terminal also comprises control (50, 180) which periodically reads its input means and communications means and uses the information contained therein to control the content of its display. Further, the control means at each terminal also provides to its transmitter instructions (figure 3) which are transmitted to the remote terminal to change the display at the remote terminal so that all the displays are the same. As a result of this arrangement, changes in the display that are made at the same time by the user at the local terminal and by the user at the remote terminal are entered on the display screens at both terminals at substantially the same time so far as is discernable by the users. As a result, not only can each user interact with the display but it is also possible for each user to interact with the other users through the display without having to wait for one user to complete his entry of information as in the prior art. As a result, truly interactive communication is possible through the display.
Patent CA-2074480-A1 (CA)
Title: Sealed pouch having tear-open spout
Inventor: SULLIVAN TIMOTHY R
IPC: B65D75/62
Filed: 1990-11-13
Abstract: An improvement in a sealed pouch (20) made of molecularly-orientable polymeric film that is sealed along peripheral edge margins is disclosed. The pouch (20) defines a sealed cavity (22) for containment of a fluid ("F"). The pouch (20) also defines a sealed fluid-discharge spout (24) that is in fluid communication with the fluid cavity (22). The pouch (20) further defines a seam (26) disposed between the fluid cavity (22) and the spout (24). The improvement comprises at least three essential features. One such feature is that a portion of the polymeric film which defines a fluid-discharge end (36) of the spout (24) is molecularly-oriented in a preselected direction. Another such feature is that a portion of the seam (26) defines a slit (30) disposed transverse to the preselected direction. Still another feature is that a portion of the sealed pouch peripheral edge margin in the vicinity of the fluid-discharge end (34) of the spout (24) defines a tear-initiating notch (32) oriented in the preselected direction.
Patent CA-2076571-A1 (CA)
Title: Portable controlled handoff
Inventor: AKERBERG DAG
IPC: H04W36/08
Filed: 1992-08-21
Abstract: ABSTRACT OF THE DISCLOSURE A cellular mobile radio system wherein a mobile station chooses an appropriate base station and an appropriate carrier/time slot combination of a multicarrier time division multiplexed radio system for the purpose of call setup and handoff. The mobile station, while in communication with one base station, scans for least interfered channels as well as base stations stronger than the base station the mobile station is presently in communication with. The mobile station uses the information to determine when to initiate a call setup or handoff to prevent the quality of the mobile station's communication link from decreasing.
Patent CA-2077571-A1 (CA)
Title: Material for the surface treatment of dental parts, especially grinding, polishing and/or blasting material
Inventor: GUNDLACH HANS-WERNER
IPC: C09K3/14
Filed: 1992-09-04
Abstract: ABSTRACT OF THE DISCLOSURE             Material  for the  surface  treatment  of  dental  parts, especially polishing, grinding and blasting materials com-prise quartz  composed of crystalline silicon dioxide which has turned out to constitute a health hazard.  The invention is therefore directed   to the creation of a material which does not have these hazardous properties.  In the material according   to   the  invention,  quartz  is  replaced  with a quartz-free magmatic stone,  especially  nepheline  syenite. Surprisingly,  the magmatic  rock  in powdered form attains nearly the same treatment results as conventional  materials vention is particularly suitable for polishing and blasting plastic material.
Patent CA-2080254-A1 (CA)
Title: Roe container
Inventor: TALSTRA DONALD T
IPC: B65D81/26
Filed: 1992-10-09
Abstract: IMPROVED ROE CONTAINER                     ABSTRACT OF THE DISCLOSURE         A roe container having sidewalls and a bottom. A handle is formed on the outside of the sidewalls on each of the end portions. The handle has a smooth lower substantially horizontal surface and a plurality of ribs used for strengthening of the sidewall and to allow the entry of the fingertips of a handler. The bottom of the container is concave as viewed from above and slopes downwardly from the sidewalls towards the centre of the bottom where a drain hole is formed. Ribs on the inside sidewalls of the container in the corner portions extend substantially vertically upwardly from the bottom of the container and terminate approximately one third of the total height of the sidewalls of the container.  The ribs act to support a second container stacked on top of and inside the container when such containers are shipped or stored empty.
Patent CA-2081375-A1 (CA)
Title: Low-profile disk drive motor
Inventor: IDE RUSSELL D
IPC: H02K29/00
Filed: 1991-03-07
Abstract: A disk drive motor having a low profile, with a gas-lubricated deflecting pad support (32) usable in the motor and elsewhere, includes a cup-shaped rotor (10) having an integral cylindrical portion (12) extending from the base of the cup which may be a shaft or a large hollow extension that encloses the stator windings (21). The stator (20) can be conventional or can have a closed end and/or a cup-like portion (22) to simplify construction and eliminate the need for a seal. A support (30) mounted on stator or rotor supports the rotor for rotation relative to the stator. It can be a deflecting pad such as hydrodynamic bearing, or plane or gas-lubricated deflecting pad supports. The gas-lubricated deflecting pad support (32) includes bearing pads (31) and a support structure (50) which supports the bearings for strictly radial movement. A contoured surface is formed on the pad surfaces, or a support surface opposing the pad surfaces, or both. Relative rotation between pad and support surfaces produces a pressurized gas film between the surfaces.
Patent CA-2081467-A1 (CA)
Title: Dough or batter composition, a process for making a fat-reduced bakery product, and a fat-reduced bakery product
Inventor: CHRISTENSEN BENT
IPC: A23L13/60
Filed: 1991-04-24
Abstract: A dough or batter composition for use in making a non-bread bakery product and having a fat content of at the most 20 wt% which composition contains 1-40 wt% of a non-cereal vegetable ingredient comprising dietary fiber and digestible starch, a process for making a bakery product from such a composition and bakery products obtainable by the process.
Patent CA-2082243-A1 (CA)
Title: Contrast beam current limiting arrangement with secondary brightness beam current limiting provisions
Inventor: LAGONI WILLIAM A
IPC: H04N5/59
Filed: 1992-11-05
Abstract: A television system includes a picture tube beam current limiting arrangement which operates to reduce image contrast without affecting image brightness when the beam current exceeds a first threshold. However, if the user brightness control setting exceed the nominal (midrange) brightness control level, the image brightness is reduced when the beam current exceeds a second threshold which may be equal to or greater than the first. The image brightness is reduced only until the image brightness is within a small margin of the nominal image brightness level. Any further beam current limiting, for example to account for abnormal operating conditions of the television system, is accomplished by further brightness reductions.
Patent CA-2084460-A1 (CA)
Title: Sealed lead-acid cell having a novel lug and end cover assembly
Inventor: SHAFFER DAVID M
IPC: H01M2/26
Filed: 1992-12-03
Abstract: ABSTRACT OF THE DISCLOSURE A sealed lead-acid cell includes a container, a plurality of positive and negative plates alternately interleaved with one another and disposed to opposite ends of the container, primary end cover in sealing engagement with the container which includes electrically conductive means for electrically coupling the lugs of like polarity plates and which is in electrical communication with a terminal post.
Patent CA-2085232-A1 (CA)
Title: Xylanase production
Inventor: VAN GORCOM ROBERT F M
IPC: C12R1/685
Filed: 1991-06-18
Abstract: A cell having a certain function in a process, containing recombinant DNA  encoding at least one enzyme, wherein said cell becomes polyfunctional for said process upon expression of the recombinant DNA  encoding at least said enzyme. Use of such a polyfunctional cell and/or enzyme obtainable from such a cell in for example a food processing process such as the preparation of bakery products. A recombinant DNA material comprising DNA with a nucleotide sequence encoding at least a ripening form of a xylanase of fungal origin.
Patent CA-2086108-A1 (CA)
Inventor: JENKINS STEPHEN L
IPC: E01H5/02
Filed: 1991-06-25
Abstract: A load support and/or snow removal device is provided for use primarily in removal of snow from driveways, sidewalks, decks and other locations where snow accumulates and needs to be removed. The device also may be used as a dally sled, or trailer-like device for pulling by a vehicle or snowmobile. The device is a unitary body having a curved lower portion. A plurality of holes in the curved lower portion are provided ~or attaching a single wheel.      Additionally, first and second elongate openings are provided on one end of the body for gripping the body and first and second elongate protrusions extending longitudinally along the bottom of the body are used as runners.