baber/WOPTO huggingface dataset:
Patent CA-2020449-A1 (CA)
Title: Polymer powders which are redispersible in water and can be prepared by atomizing aqueous polymer dispersions, and their use as additives in hydraulic binders
Inventor: BECKERLE WILHELM F
IPC: C08J3/12
Filed: 1990-07-04
Abstract: O.Z. 0050/40946 Abstract of the Disclosure:  Polymer powders which are redispersible in water and are obtainable by atomizing aqueous polymer dispersions to which from 3 to 50% by weight, based on the polymer, of a water-soluble alkali metal salt or alkaline earth metal salt of a phenol-sulfonic acid/formaldehyde condensate has been added are used as additives in hydraulic binders.
Patent CA-2024652-A1 (CA)
Title: Coated seeds
Inventor: ASANO HIROYOSHI
IPC: A01C1/06
Filed: 1990-09-05
Abstract: The present invention relates to coated seeds.          The coated seed according to the invention is a seed coated with a coating mass composition comprising 70 to 95 parts by weight of a clay mineral of double-chain structure and 30 to 5 parts by weight of a hydrophobic compound.  The coated seed provided by the invention has a coating layer of adequate hardness and yet insures good germination characteristics, thus being contributory to the rationalization and development of agricultural production.
Patent CA-2030145-A1 (CA)
Title: Flame retardant adhesive composition and laminates
Inventor: DUEBER THOMAS E
IPC: C09J133/02
Filed: 1990-11-16
Abstract: Title FLAME RETARDANT ADHESIVE COMPOSITION AND LAMINATES                         ABSTRACT A flame retardant adhesive composition comprising 50-99% latex, 10-50% substantially nonreactive, biominated polymer and 0-15% antiniony oxide. The latex comprises 1-10% crosslinking agent and 90-99% copolymer comprising 15-50% acrylonitrile and/or methacrylonitrile, 45-84% acrylate and/or methacrylate and 1-10% methacrylic acid, acrylic acid, itaconic acid or mixtures thereof. This composition is a particularly useful adhesive for polyimide films in the fabrication of solderable flexible circuits.
Patent CA-2030314-A1 (CA)
IPC: A47H2/00
Filed: 1990-11-20
Abstract: ABSTRACT OF THE INVENTION     A valance beam for a drapery system has a top flange that corresponds to the top flange of a conven-tional I-beam drapery system.   The web of the beam is wider than that of the conventional drapery track I-beam, while the bottom flange of the track is narrower than the conventional track.  The valance track carries a strip of fastener component of the hook and loop pile type on an outer face of the beam web.   The valance beam can be mounted and assembled using conventional I-beam hardware.          When in place, a valance strip carrying a complimentary component of the fastener can be fastened directly to the beam in a simple and effective manner.  Where desired, a second strip of fastener can be affixed to the back side of the beam and a curtain equipped with a complimentary strip or fastener can be fastened to the back side to provide a complete drapery system.
Patent CA-2031225-A1 (CA)
IPC: A24F40/90
Filed: 1990-11-30
Abstract: Methods and apparatus for releasing flavor components from a flavor-generating medium using an electric heating element are provided.  A non-combustion flavor-generating article uses electrical energy to power a heating element which heats tobacco or other flavorants.  The flavor-generating medium is formed into a packed bed.  Energy delivered to the heating element is regulated to maintain the flavor-generating medium at a relatively constant operating temperature to ensure a relatively constant release of flavor.
Patent CA-2032470-A1 (CA)
Inventor: MEIER ANDREAS
IPC: C09C1/02
Filed: 1990-05-02
Abstract: Finely powdered magnesium hydroxide, in particular for use as a flame retardant filler for plastic compounds, in which the particles may have a thin coating of a surface active substance. The particle size of the magnesium hydroxide, as determined by laser diffraction, is less than 10  mu m and the mean particle size is greater than 0.8  mu m but not more than 3  mu m. The magnesium hydroxide has a water-soluble ionic impurities content, i.e., Ca<++>, Na<+>, K<+>, SO4<--> and Cl<->, below the following limits (in parts by mass): Ca<++> < 1000 ppm, Na<+> < 20 ppm, K<+> < 20 ppm, SO4<--> < 1500 ppm and Cl<-> < 1000 ppm, and Mn, Ni and Cu contents below the following limits (in parts by mass): MnO < 100 ppm, NiO < 100 ppm and CuO < 10 ppm. In the method for preparing the magnesium hydroxide, magnesium oxide obtained by spray roasting a magnesium chloride solution free of impurities is hydrated by mixing with water, the resultant magnesium hydroxide is filtered off and the filter cake material is then washed with water.
Patent CA-2033761-A1 (CA)
Title: Seal
Inventor: WORTH JOHN N
IPC: B05B1/30
Filed: 1991-01-08
Abstract: ABSTRACT OF THE DISCLOSURE         A dispensing nozzle for a liquid composition introduced through an inlet has its discharge nozzle orifice closable by the tip of a longitudinally movable needle valve member the point of entry of the needle valve member into the dispensing chamber being sealed by means of an elongate annular seal portion which extends and contracts in response to longitudinal movement of the needle valve member while simultaneously undergoing a change in external cross-section whereby the volume of the longitudinal portion of the seal remains substantially unaltered and the shaft of the needle valve member displaces longitudinally substantially without sliding relative to the seal portion.  The internal wall of the longitudinal portion of the seal is held clear of the needle valve member by a helical spring.
Patent CA-2036458-A1 (CA)
Title: Method for vehicle driving training and apparatus therefor
Inventor: LANGLAIS BERNARD
IPC: G09B9/05
Filed: 1991-02-15
Abstract: The invention relates to a method and a device for training in the driving of vehicles and especially land vehicles, in which a sequence of images is displayed on a screen placed opposite to a driving station for a trainee driver and is caused to move in accordance with control operations initiated from said driving station. There are thus displayed on the screen both a front main image and at least one rear vision secondary image which is made visible on an associated rear-view mirror provided at the driving station. The main image and the secondary image are synthetic images generated by a computer from a data base containing the description of a three-dimensional road circuit.
Patent CA-2036890-A1 (CA)
Title: Magneto-optic recording disk and method of reproducing recorded signals
Inventor: KATAYAMA HIROYUKI
IPC: G11B11/105
Filed: 1991-02-22
Abstract: A  magneto-optical  disk  is  provided  with  a transparent substrate of a disk shape and a multiple layered structure which is formed on the substrate and includes a plurality of transparent dielectric films and magnetic recording films which are alternatively layered. One method of reproducing the magneto-optical disk is enabled, which has the steps of inputting a circularly or elliptically polarized light on the magneto-optical disk, and detecting an intensity change of light caused by the magneto-optical disk due to the circular dichroism effect thereof,  as  a  reproduced  signal.    Another  method  of reproducing the magneto-optical disk is also enabled, which has the steps of inputting a linearly polarized light on the magneto-optical disk, and detecting a rotation change of a polarization plane of the light caused by the magneto-optical disk  due  to  the  magnetic  Kerr  effect,  as  a reproduced signal.
Patent CA-2037205-A1 (CA)
Title: Gas turbine
Inventor: OLIVER MICHAEL J B
IPC: F02C7/143
Filed: 1991-02-27
Abstract: ABSTRACT A gas turbine operating on a regenerative gas turbine cycle includes a compressor having liquid feed means for feeding water into air compressed during compression and intercooling means for cooling compressed air between compression stages. A heat exchanger provides for heating of compressed air by hot exhaust gases from the power generating turbine of the gas turbine, before the compressed air is fed into a combustion chamber where it is mixed with fuel and the fuel is combusted for generating pressure/heat energy for driving the power generating turbine. The intercooling of air compressed in the compressor together with air cooling as a result of water vaporization and simultaneous vapour loading of the air, and the employment of hot exhaust gases for heating compressed air, result in a gas turbine cycle that can provide a gas turbine having a high thermal efficiency.     .
Patent CA-2037413-A1 (CA)
Title: Method for producing a fine grained powder consisting of nitrides and carbonitrides of titanium
Inventor: ZEIRINGER HANS
IPC: C04B35/58
Filed: 1991-03-01
Abstract: Besides titanium it is possible, where appropriate, for other metals of groups IVA, VA and VIA of the periodic table to be subjected to the procedure. To obtain particles of high purity and low particle size with negligible subsequent milling, the following steps are carried out: 
 
  introduction of a reaction mixture consisting of oxides of titanium and, where appropriate, other metals of groups IVA, VA and VIA of the periodic table and a carbon-containing substance into the reactor; 
  production of a nitrogen atmosphere in the reactor under reduced pressure; 
  heating of the reactor contents to a temperature between 800 DEG C and 2000 DEG C, preferably between 1000 DEG C and 1900 DEG C, and maintaining in the temperature range between 1400 DEG C and 1800 DEG C while simultaneously removing the gaseous reaction products, passing nitrogen or a nitrogen-releasing gas through or over the reaction mixture; 
  cooling the reactor contents.
Patent CA-2038586-A1 (CA)
Title: Process for the preparation of alkali metal phosphate solutions
Inventor: SCHIMMEL GUENTHER
IPC: C01B25/30
Filed: 1991-03-19
Abstract: Process for the preparation of alkali metal phosphate solutions Abstract of the disclosure:          Alkali  metal  phosphate  solutions  having  a  fluorine content of less than 20 ppm, based on P2O5, are prepared by first digesting crude phosphate using sulfuric acid, and  separating  the  calcium  sulfate  from  the  crude phosphoric acid. An alkali metal compound is then added to the crude phosphoric acid, and the precipitated solid is filtered off. The prepurified crude phosphoric acid is neutralized to a pH of at least 7,  and the solid produced during this operation is separated off.  The resultant alkali metal phosphate solutions having a P2O5 content of from 10 to 30% by weight are adjusted to a pH of  between  4.8  and  6.0  using phosphoric  acid.  The solutions are heated to from 60 to 120°C, and from 1 to 6% by weight, based on the weight of the solution, of an alkaline earth metal oxygen compound are added to the alkali metal phosphate solutions with stirring. Finally, the precipitated solid is filtered off from the alkali metal phosphate solutions after a residence time of from 0.5 to 4 hours.
Patent CA-2039870-A1 (CA)
Inventor: GINZBURG VLADIMIR B
IPC: B21B27/03
Filed: 1991-04-05
Abstract: A sleeved roll generally has a bendable arbor.  The sleeve is shrunk-fit on the arbor such that the dimensional difference between the arbor diameter and the sleeve  inner diameter  varies  along  the  arbor  axis.    Thus  the  radial stresses induced by the shrunk-fit vary along the axis of the arbor.     The sleeved bendable roll may be employed as a work roll or as a backup roll in a rolling mill.     The roll is assembled by providing a bendable arbor having  an  axial  surface  and  a  hollow  sleeve,  axially contouring at  least a portion of the arbor surface or the sleeve inner surface, positioning the hollow sleeve having an inner surface adjacent the arbor, and then shrink-fitting the sleeve inner surface on the axially convexly contoured surface of the arbor.
Patent CA-2041013-A1 (CA)
Title: Printing of reflective sheeting
Inventor: RAJAN J SUNDAR
IPC: E01F9/00
Filed: 1991-04-23
Abstract: A weather resistant sign and a method of printing a sign including the steps of providing a sign component and an image definition, applying dry toner powder to surface portions corresponding to the image definition, and fusing the applied toner. Preferably, the fused toner is protected from weather by a transparent protective layer. A toner composition and a computer program for printing are also disclosed.
Patent CA-2041726-A1 (CA)
Title: Electrochemical cell apparatus having an exterior fuel mixer nozzle
Inventor: REICHNER PHILIP
IPC: H01M8/06
Filed: 1991-05-02
Abstract: An electrochemical apparatus (10) is made having a generator section (22) containing electrochemical cells (16), a fresh gaseous feed fuel inlet (28), a gaseous feed oxidant inlet (30), and at least one hot gaseous spent fuel recirculation channel (46), where the spent fuel recirculation channel (46), a portion of which is in contact with the outside of a mixer chamber (52), passes from the generator chamber (22) to combine with the fresh feed fuel inlet (28) at the entrance to the mixer chamber, and a mixer nozzle (50) is located at the entrance to the mixer chamber, where the mixer chamber (52) connects with the reforming chamber (54), and where the mixer-diffuser chamber (52) and mixer nozzle (50) are exterior to and spaced apart from the combustion chamber (24), and the generator chamber (22), and the mixer nozzle (50) can operate below 400°C.
Patent CA-2042142-A1 (CA)
Title: Digital error correction system for subranging analog-to-digital converters
Inventor: RIBNER DAVID B
IPC: H03M1/10
Filed: 1991-05-09
Abstract: RD-19,423 DIGITAL ERROR CORRECTION SYSTEM FOR SUBRANGING ANALOG-TO-DIGITAL CONVERTERS              ABSTRACT OF THE DISCLOSURE    A general architecture to correct conversion errors of a multi-stage,  pipelined subranging analog-to-digital  (A/D) converter includes cascaded stage, each stage generating a binary conversion signal representing the nearest quantized level below that of the analog input signal and a residual analog signal applied to the next conversion stage.   The binary conversion signal from each stage addresses individual or common look-up tables providing a compensated binary signal selected to compensate for nonidealities of the A/D converter components.   The compensated binary signals from the look-up tables provide a corrected output signal when summed together.  A simple method of calibration for the A/D converter  makes  use  of  a  least-mean-squared adaptation algorithm.  The A/D converter accommodates practical circuit nonidealities such as component mismatching, gain error and voltage  offsets,  and handles  high  levels  of  amplifier nonlinearity.    The  architecture  is  applicable  to  any subranging converter with arbitrary numbers of stages and bits per stage.
Patent CA-2043802-A1 (CA)
Title: Oil well fire suppression system
Inventor: WAGNER HERBERT G
IPC: E21B35/00
Filed: 1991-06-03
Abstract: PATENT APPLICATION            OIL WELL FIRE SUPPRESSION SYSTEM            Abstract:          The device described herein, employs a "T- shaped" pipe to cover the exposed oil pipe at or near ground level and re-direct the flow of oil away from the flame, thereby starving the flames of fuel. Operation is either by crane or by helicopter.          After initial placement over the oil flow, oil will be flowing unimpeded through the vertical pipe section and the fire will still be burning above the device.          At this point, a cable with a sphere attached is pulled through the other pipe section at approximately 90 degrees to the oil flow. Eventually, the sphere is pulled up against an annular ring in the neck of the vertical pipe section and closes off the flow of oil in this direction. Oil now flows parallel to the ground and exits the pipe some 15 feet from the flames. The flames die out due to lack of fuel.
Patent CA-2045464-A1 (CA)
Title: Building element for erecting buildings, parts of buildings or the like
Inventor: REICHARTZ PAUL
IPC: E04B1/21
Filed: 1990-01-29
Abstract: (57) Abstract A building element for erecting buildings, parts of buildings or the like is described. The building element has at least one panel (3) which is horizontal in the position of use and which is provided with a reinforcement,  and support elements  (4) which are mounted in the corner regions of the panel and extend transversely to the plane of the panel. The reinforcement is in the form of a space frame structure and the interior of the panel is throughout in the form of  a cavity interrupted only by the reinforcement.  At  least  the portion of  the reinforcement which faces the top side of the panel in the position of use is embedded in an upper embedding region, preferably of concrete. The reinforcement has edge ribs extending along the edges of the panel and mutually intersecting diagonal ribs. Embedded in the ribs are lattice bearers which are suspended at the ends in stiffening shoes. The suspension regions are embedded in concrete or the like.
Patent CA-2045773-A1 (CA)
Title: Byte-compare operation for high-performance processor
Inventor: SITES RICHARD L
IPC: G06F9/30
Filed: 1991-06-26
Abstract: BYTE-COMPARE OPERATION FOR HIGH-PERFORMANCE PROCESSOR              ABSTRACT OF THE DISCLOSURE      A high-performance CPU of the RISC (reduced instruction set) type employs a standardized, fixed instruction size, and permits only simplified memory access data width and addressing modes.  The instruction set is limited to register-to-register operations and register load/store operations.  Byte manipulation instructions, included to permit use of previously-established data structures, include the facility for doing in-register byte extract, insert and masking, along with non-aligned load and store instructions.  The provision of load/locked and store/conditional instructions permits the implementation of atomic byte writes.  By providing a conditional move instruction, many short branches can be eliminated altogether.  A conditional move instruction tests a register and moves a second register to a third if the condition is met; this function can be substituted for short branches and thus maintain the sequentiality of the instruction stream. Performance can be speeded up by predicting the target of a branch and prefetching the new instruction based upon this prediction; a branch prediction rule is followed that requires all forward branches to be predicted not-taken and all backward branches (as is common for loops) to be predicted as taken.  Another performance improvement makes use of unused bits in the standard-sized instruction to provide a hint of the expected target address for jump and jump to subroutine instructions or the like.  The target can thus be prefetched before the actual address has been calculated and placed in a register.  In addition, the unused displacement part of the jump instruction can contain a field to define the actual type of jump, i.e., jump, jump to subroutine, return from subroutine, and thus place a predicted target address in a stack to allow prefetching before the instruction has been executed.  The processor can employ a variable memory page size, so that the entries in a translation buffer for implementing virtual addressing can be optimally used.  A granularity hint is added to the page table entry to define the page size for this entry.  An additional feature is the addition of a prefetch instruction which serves to move a block of data to a faster-access cache in the memory hierarchy before the data block is to be used.            H:\DIGW\061\PA\CLAIMS
Patent CA-2048601-A1 (CA)
Title: Two compartment storage and transfer flask_
Inventor: MEYER GABRIEL
IPC: A61J3/00
Filed: 1990-12-30
Abstract: PCT No. PCT/EP90/02332 Sec. 371 Date Aug. 28, 1991 Sec. 102(e) Date Aug. 28, 1991 PCT Filed Dec. 30, 1990 PCT Pub. No. WO91/10417 PCT Pub. Date Jul. 25, 1991.Bottle (10) for storage and transfer with dual compartments (11 and 12) separated during storage by a movable intermediate seal (13). The bottle (10) also has a narrow neck (15) in which a sealing device engages comprising an elastomeric sealing member (61) and a capsule (17) attached to said member. The capsule extends toward the outside into a tip (18) in which there is a closing valve (63) urged by a spring (62) which supports a disc (60b) of a rigid element (60) attached to the inside of the sealing member (61).
Patent CA-2050018-A1 (CA)
Title: Method for open-pit working and mining of coal and other minerals
Inventor: GRATHOFF HARTMUT
IPC: E21C41/30
Filed: 1991-08-27
Abstract: ABSTRACT OF THE DISCLOSURE A continuously operating mining machine (1 ) having a drum-shaped cutting element (2) is used to extract coal or other minerals in an open-cast mine. This machine removes mineral slices (18) of approximately rectangular cross section, the width of the cross section being approximately equal to the width of the cutting drum (2), and the height of the cross section being no more than about half the diameter of the cutting drum. The mining machine (1) is connected by a conveyor belt system (8, 9) with a loading car (12) which discharges onto an advanceable bench conveyor (13). A rectangular section of mine is developed as follows in the manner according to the invention: A mineral slice (18) is removed by the cutting drum (2) of the mining machine (18) as the latter travels, starting at one of the short sides of the workings, then moving along the long side and ending at the opposite short side of the workings. On both short sides, this slice ends in an curved section (19) in the form of an eighth or a quarter arc of a circle and in each case it forms a ramp surface (20). These ramp surfaces (20) are created by raising or lowering the cutting drum (2). In order to obtain a terraced edge slope (141 of the open-cast mine, a large number of mineral slices (18) are removed as the mining machine (1) is shifted sideways in stages. Once the edge slope (14) of the open-cast mine has been created, the mineral blocks (16) in the workings are extracted layer by layer, starting from the development trench (15) which is formed.
Patent CA-2050736-A1 (CA)
Title: Light valve device
Inventor: TAKASU HIROAKI
IPC: G02F1/136
Filed: 1991-09-05
Abstract: ABSTRACT     The invention relates to a light valve semiconductor device; a light valve incorporating such device; and an image projection device incorporating the light valve.  The light valve semiconductor device comprises a composite substrate including an electric insulating substrate, and a semiconductor single crystal thin film formed over the substrate; and a pixel array portion formed over the composite substrate and including a group of switch elements for energizing at least a group of pixel electrodes selectively.  The light valve of the invention has an opposed substrate opposed to the composite substrate at a predetermined gap; and an electrooptical material filling up the gap for optically changing in accordance with the selective energizations of the individual ones of the pixel electrodes.          The invention provides a super-small light valve device having a remarkably high pixel density and a remarkably small pixel size.  A video projection device which is assembled with a light source, an enlarging lens system and the present light valve device has a super-small size and a high resolution.