baber/WOPTO huggingface dataset:
Patent CA-2028353-C (CA)
Title: Amplifier for optical fiber telecommunication lines and optical fiber telecommunication lines incorporating said amplifier
Inventor: GRASSO GIORGIO
IPC: H04B10/61
Filed: 1990-10-23
Granted: 1996-07-30
Abstract: An optical amplifier (3) in accordance with the invention consists of the assembly of a length of active-core optical fiber (8), single-mode to both pumping and signal optical radiations, and a dichroic coupler (6) which includes two optical fiber lengths (9, 10), both single-mode to pumping and signal optical radiations, coupled to each other over one portion (11) by fusion of the respective claddings and substantial setting in common of the respective cores in the fused portion (11).
Patent CA-2033340-C (CA)
Title: Mobile assisted handoff
Inventor: DAHLIN JAN ERIK AAKE STEINER
IPC: H04B7/26
Filed: 1990-05-17
Granted: 1999-07-27
Abstract: The invention relates to a method for communication and handoff in a cellular mobile radio system and a base station and a mobile station for communication and handoff in such a system, in which time slot identifier codes are transmitted in bursts in times slots in frames of radio channels used for time division communication channels, the time slot identifier codes being indicativeof burst time slot in a frame but not of transmitter or receiver entity or radiochannel, the time slot identifier codes being used for burst synchronization anddetermining bursts the signal strength of which to be measured for the purpose of possible handoff.
Patent CA-2039199-C (CA)
Title: Winter type tire tread
Inventor: GRAAS MAURICE
IPC: B60C11/01
Filed: 1991-03-27
Granted: 2002-09-10
Abstract: A winter type tire tread (11) comprises an uneven number of, but at least three, circumferentially extending axially spaced grooves (4-6) and a plurality of zig-zag shaped grooves (36, 37) disposed circumferentially about the tire in a repetitive manner and extending across the tread from the equatorial plane (EP) towards the lateral edges (TE1, TE2) of the tire. The zig-zag shaped grooves (36, 37) situated on one side of the equatorial plane (EP) are symmetrical to those situated on the opposite side of the equatorial plane. The circumferentially and laterally extending grooves (4-6, 36, 37) define block elements (20-23), arranged in circumferentially extending rows (30-33) and having each at least in part the shape of a parallelogram. A plurality of sipes (15) are incorporated in each block element.
Patent CA-2040435-C (CA)
Title: Method for entombment of container in concrete
Inventor: BAMBACIGNO RALPH
IPC: E04H7/18
Filed: 1990-06-22
Granted: 1996-01-30
Abstract: A storage vault (2, 182) includes an inner tank (4,4',152,180) entombed within a concrete outer tank (8) by first erecting a pair of sidewall forms (51) on a base plate (44) to create an open-top enclosure (54).  The inner tank (180) can include a plastic tank (152) enclosed within an external framework (154), the combination (150) housed within a steel tank (174).  A layer of concrete (56) is poured onto the base plate, the inner tank is lowered onto the layer of concrete, and concrete is poured into the enclosure to entomb the inner tank while the bottom layer of concrete is still wet. Reinforced hold-down bars (86) extend over the top of the enclosure and have downwardly extending hold-down tubes (92) which engage the top of the inner tank and keep the inner tank positioned horizontally and vertically.  The hold-down bars are fastened to the base plate to keep the inner tank properly positioned.  After the concrete has set sufficiently, the hold-down bars and tubes are removed and the holes created by the hold-down tubes are filled with concrete.  After curing, the wall forms and base plate are removed from the vault created within the form assembly.
Patent CA-2048192-C (CA)
Title: Preparation of potassium magnesium l-ascorbate 2-phosphate
Inventor: DOBLER WALTER
IPC: C07D307/62
Filed: 1991-07-31
Granted: 2001-06-05
Abstract: Potassium magnesium L-ascorbate 2-phosphate is prepared from an aqueous solution of potassium L-ascorbate 2-phosphate which is highly contaminated with KCl, as is produced in the phosphorylation of 5,6-iso-propylidene-L-ascorbic acid, by adding to the solution about 1 equivalent of magnesium ions per equivalent of L-ascorbate 2-phosphate, and subsequently removing the KCl by electrodialysis. The product of this process is a novel salt of L-ascorbic acid 2-phosphate and has very advantageous handling properties.
Patent CA-2050843-C (CA)
Title: Noise eliminating element and electrical circuit having the same
Inventor: OHTSUBO KAZUO
IPC: H01L35/00
Filed: 1991-09-06
Granted: 1999-08-03
Abstract: Disclosed are a noise eliminating element having a junction of components of two kinds of electroconductive materials, characterized in that the absolute values of the thermoelectric power of the two kinds of materials is 50µVK-1 or higher and there is substantially no rectifying action at the junction.  Both the Seebeck effect and the Paltier effect occur simultaneous and create a transient phenomena in one element.  Because of the transient phenomena in one element and because of the transient phenomenon based on both effects, noises, particularly the standing wave noises generated at around output current near to zero are eliminated.  The noise eliminating elements can be inserted in a magnetic circuit of a speaker circuit for acoustic equipment or in a diflecting coil circuit of an electron image display device.
Patent CA-2051569-C (CA)
Title: Lateral sheet registration system
Inventor: SALOMON JAMES A
IPC: G03G15/00
Filed: 1991-09-17
Granted: 1995-01-10
Abstract: ABSTRACT OF THE DISCLOSURE   A simplified low cost, low wear, sheet registration and feeding system for laterally (side) registering a sheet without frictional drive slippage against the sheet and while maintaining feeding control in the primary forward feeding direction of the sheet. The sheet may be fed both forward and laterally (towards a side guide edge for side registration) utilizing only multiple sheet-engaging rotatable ellipsoidal rollers angularly mounted around the periphery of a fixed angle rotating hub member. The sheet-engaging rollers rotate with the hub member to so feed the sheet, but are also rotatable about their own, different, axes of rotation, which axes are parallel to the forward feeding direction of the sheet and the side guide to allow the sheet-engaging rollers to roll after side registration is achieved to prevent excessive lateral feeding force and undesirable slippage, smearing and/or wear.
Patent CA-2053743-C (CA)
Title: Asymmetric polymer membrane and preparation thereof
Inventor: ZHANG HUSHENG
IPC: B01D69/02
Filed: 1991-10-18
Granted: 2001-11-20
Abstract: The present invention is directed to an asymmetric polymer membrane characterized by being formed by irradiating a monomer and/or an oligomer polymerizable with an energy ray and having a pore diameter distribution in the thickness direction of the membrane, a ratio of a permeability flux of oxygen to nitrogen of 0.9-1.1, and communicating pores.
Patent CA-2057492-C (CA)
Title: Multifunctional additive for lubricating oils
Inventor: GAMBINI PAOLA
IPC: C10N30/02
Filed: 1991-12-12
Granted: 2005-06-28
Abstract: A lubricating oil viscosity index improvement additive with dispersant and antioxidant properties of general formula: (see formula I) where R' is hydrogen or an alkyl, R a and R b are alkyl radicals, R c is a nitrogenated alkyl radical and x, y and z represent relative quantities.      The invention also relates to the process for preparing said additive and lubricating oil compositions which contain it.
Patent CA-2058818-C (CA)
Title: Paint strippers
Inventor: DISTASO JOHN
IPC: C09D9/00
Filed: 1992-01-06
Granted: 1998-06-09
Abstract: Paint stripper formulations containing a solvent system comprised of an ester such as benzyl formate and methods for using the same to strip paint.
Patent CA-2061039-C (CA)
Title: Process gas chromatographic system
Inventor: HIKOSAKA MASATOSHI
IPC: G01N30/02
Filed: 1992-02-11
Granted: 1997-04-29
Abstract: A gas chromatographic system for analyzing gas components includes an analyzer, a constant temperature oven, an analyzer case, an indicator, an integrated sample conditioner, and a coupler.  The analyzer includes a sample valve having a detector and a heater built therein and first and second columns wound around the periphery of the sample valve.  The constant temperature oven accommodates the analyzer unit therein.          The analyzer case accommodates the constant temperature oven.  The indicator is protruded from the analyzer case to display analysis processes and results.  The integrated sample conditioner provides an optimal condition for analysis.  The coupler couples the analyzer unit with the sample conditioner so as to supply a sample gas and one of a carrier gas and a reference gas from the sample conditioner to the analyzer unit.
Patent CA-2064046-C (CA)
Title: Method of isolating restriction fragment deletions in vibrio cholerae, and products thereof
Inventor: KAPER JAMES B
IPC: C07K14/28
Filed: 1991-06-05
Granted: 1999-04-13
Abstract: This invention relates to methods of isolating deletion mutants of Vibrio cholerae. In one method, the deletion is predeter-mined by digestion with restriction endonucleases of known specificity. The deletions are inserted into the Vibrio cholerae chrom-osome by in vivo recombination between a plasmid carrying the desired deletion, with adjacent flanking sequences, and the Vibrio cholerae chromosome. In another method, an initial in vivo recombination event of homologous sequences from the recombinant plasmid into the chromosome provides a selectable marker at this site. A second in vivo recombination event between homolo-gous flanking sequences results in excision of proficient genes from the chromosome with the end product being a deletion muta-tion. The invention includes the isolation and characterization of a new Vibrio cholerae strain having a deletion in the ctx gene, as defined by Acc I, Xba I, C?a I and/or restriction endonuclease sites and further having a deletion in the gene encoding zonula occludens toxin.
Patent CA-2065870-C (CA)
Title: Vent line separator
Inventor: GRANVILLE JEFFREY H
IPC: B63H21/38
Filed: 1990-10-26
Granted: 1996-08-27
Abstract: A vent line separator (30) having a housing (34) defining an interior chamber (44) having a flow diverter (132) positioned therein that separates li-quid and gas and a by-pass valve assembly (106) that permits gas to be vented to the atmosphere under a predetermined minimum pressure, that prevents gas and liquid from being vented to the atmosphere when the liquid pressure in the interior chamber (44) is above a predetermined minimum pressure and below a determined maximum pressure, and allows venting of liquid fuel and gas to the atmosphere when liquid pressure in the interior chamber (44) is above a predetermined maximum pressure.
Patent CA-2066392-C (CA)
Inventor: FENK JOSEF
IPC: H03C3/16
Filed: 1992-04-16
Granted: 2001-03-27
Abstract: A frequency modulation oscillator circuit includes an oscillator stage having two emitter-coupled transistor pairs, each being fed from at least one controllable current source, and at least one trigger stage for triggering the controllable current sources for the two transistor pairs.
Patent CA-2067083-C (CA)
Title: Rupturable pressure relieving apparatus and methods of manufacturing the same
Inventor: FARWELL STEPHEN P
IPC: F16K17/16
Filed: 1992-04-24
Granted: 1998-06-23
Abstract: Improved rupturable pressure relieving apparatus and methods of manufacturing such apparatus are provided.   The apparatus includes a structure for containing pressurized fluid having a wall of substantially uniform thickness and having a substantially circular indentation in the wall which inverts and ruptures when a predetermined fluid pressure is exerted on the wall.   The indentation is comprised of a frusto-conical portion connected to a dome shaped portion.
Patent CA-2067748-C (CA)
Inventor: DAMHUS TURE
IPC: C12R1/07
Filed: 1990-10-12
Granted: 1999-01-19
Abstract: The transfer of a textile dye from a dyed fabric to another fabric during washing or rinsing is inhibited by adding an enzyme exhibiting activity or an enzyme exhibiting a suitable oxidase activity to the wash liquor in which said fabrics are washed and/or rinsed.
Patent CA-2070370-C (CA)
Inventor: SHIMIZU TAKAO
IPC: D04H18/00
Filed: 1992-06-03
Granted: 2001-07-24
Abstract: A magnetic marker, comprising a first fabric base sheet, a plurality of magnetized fibers attached to a surface of the first fabric base sheet by bonding means, and a second fabric base sheet secured to the surface of the first fabric base sheet so as to interpose the magnetized fibers between the first and second fabric base sheets. The magnetic marker using magnetized fibers can withstand repeated piercing which is encountered in the application for detecting the position of the ground fabric during the process of needling for the production of felt. The magnetized fibers are firmly secured between the two fabric base sheets, optionally reinforced by a multiplicity of perpendicularly arranged yarn, that the magnetized fibers can retain the capability to generate magnetic flux even after repeated use.
Patent CA-2076144-C (CA)
Title: Delay-in-frames correcting system in a pcm transmission line
Inventor: OKUYAMA YUZO
IPC: H04J3/06
Filed: 1992-08-14
Granted: 1998-09-29
Abstract: A delay-in-frames correction system in a switch unit in a PCM transmission line is used in the data communication field.  It comprises a channel data storage  unit  for  temporarily  storing  data corresponding to each channel on the output side or the input side of the switch unit in each direction in the PCM transmission line, and a data delay control unit for delaying data among the data corresponding to channels and stored in the channel data storage unit, the data corresponding to a plurality of channels, being outputted in order in the same frame, and being delayed by the number of frames indicated by the most delayed data corresponding to channels, and for  outputting  frame  correction  instruction information for outputting a data string in the same frame.
Patent CA-2079694-C (CA)
Title: Undercut excavation method
Inventor: GRYBA CHARLES M
IPC: E21C41/16
Filed: 1992-10-02
Granted: 1997-09-09
Abstract: An   excavation  method   is   provided,   which   is particularly  suitable  as  an  undercut-and-fill  mining method, wherein posts are inserted into the ground and are used to support a concrete floor of the upper level which serves as a roof for the lower excavation level. Excavation beneath such roof is thereby safely carried out. Also, for mining operations, the excavation is very efficient since it removes essentially 100% of the ore in a single pass. The posts are preferably made of concrete and are inserted into holes drilled in the ground. For greater safety a double post system can be used, which involves placing a second post beside the first and tying them all together with the concrete used to make the floor/roof at any given level of excavation.
Patent CA-2082311-C (CA)
Title: Modular radiant plate drying apparatus
Inventor: PISIO STEVE
IPC: F26B17/20
Filed: 1992-11-06
Granted: 2001-04-10
Abstract: A universal industrial modular drying apparatus called a Radiant Plate Dryer for drying sewage sludge, pulp sludge, other industrial sludges, slurries, grains, cereals, organic and inorganic fibres and pulps, chemical waste and other similar materials. The apparatus includes: a dryer module which may be constructed for mobile or fixed installation applications; a constant flow material input system; a number of spiral auger flights in a jacketed open trough joined together to form an upper auger bed; a source of variable infrared energy for providing high intensity infrared flux to open troughs of the upper auger bed; a condenser to capture and condense volatiles released by the material during processing and to heat glycol for preheating material to be processed for other heat exchange purposes; a number of spiral auger flights enclosed in jacketed tubes formed together to form two other radiant heat augers beds, the jackets being formed in each auger flight by an inner tube containing a spiral auger disposed inside an outer tube defining a jacket divided by flanges into an upper portion through which hot flue gas flows and a lower portion void of flue gas, the radiant heat provided by the inner tube upper portion having vanes extending radially into the jacket affecting heat transfer to the upper inner tube surface thereby focusing high intensity radiant heat in addition to convective heat upon the material enclosed; a temperature control system effective to manage sludge through their "glue" stages; a hot flue gas distribution system to selectively circulate hot flue gases through a auger flight jackets; a flue gas water cooling system using water sourced from the condenser to provide finite process heat control in the auger flights and the dryer module, a condenser vent gas destruction system to consume noncondensable volatiles released during material processing; and a dried material storage system.
Patent CA-2082988-C (CA)
Title: Excessive noise preventer
Inventor: JUNGOWSKI WIKTOR M
IPC: F01N13/16
Filed: 1992-11-16
Granted: 2002-11-26
Abstract: A device for the prevention of noise generation during the expansion of high pressure fluid (i.e. gas or steam) stream. The preventer comprises a housing which consists of an inner wall and a larger outer wall. The inner and outer walls both have the shape of a hemisphere and are perforated to allow fluid to flow through them. An enclosed space between both hemispheres contains a granular packing which creates a tortuous path for the flowing fluid. The preventer may find application in such installations as compressor stations (as a blowdown noise suppressor), gas metering stations and power plants.
Patent CA-2083103-C (CA)
Inventor: SCHNEIDER VOLKER
IPC: C08G18/72
Filed: 1992-11-17
Granted: 2004-05-25
Abstract: The present invention relates to an aqueous binder composition containing R) an aqueous solution or dispersion of a water-dilutable organic polyol component containing at least one polyester resin having carboxylate and hydroxyl groups and grafted with vinyl monomers and B) a polyisocyanate component which is emulsified in the aqueous solution or dispersion A), has a viscosity at 23°C of 50 to 10,000 mPa.s and contains at least one organic polyisocyanate, wherein the binder composition has an NCO/OH equivalent ratio of 0.5:1 to 5:1, based on the isocyanate groups of component B) and the alcoholic hydroxyl groups of Component A).        The present invention also relates to a process for the production of a coating or sealing composition containing this aqueous binder composition.
Patent CA-2090523-C (CA)
Title: Frequency synthesizer and frequency synthesizing method
Inventor: WATANABE NOZOMU
IPC: H03L7/183
Filed: 1993-02-26
Granted: 1998-09-01
Abstract: ABSTRACT                 A frequency synthesizer and a frequency synthesizing method  comprises,  for  the  purpose  of  achieving  frequency switching in a short time even though the switched width of an output  frequency signal  from the frequency synthesizer  is narrow, a gate pulse generator circuit for generating a gate pulse signal using a frequency-division-number data-activation signal upon setting the output frequency from the frequency synthesizer; and a gate circuit for interrupting a reference frequency signal over a predetermined time interval with the aid of the gate pulse signal, and thereafter driving a voltage-controlled oscillator to switch to oscillate at a new frequency with the aid of a phase comparator, a charge pump circuit, and a low-pass filter.
Patent CA-2098171-C (CA)
Title: Genetically engineered modification of potato to form amylopectin-type starch
Inventor: HOFVANDER PER
IPC: C12N15/56
Filed: 1991-12-20
Granted: 2007-06-19
Abstract: Genetically engineered modification of potato for suppressing the formation of amylose-type starch is described. Three fragments for insertion in the antisense direction into the potato genome are also described. Moreover, antisense constructs, genes and vectors comprising said antisense fragments are described. Further a promoter for the gene coding for formation of granule--bound starch synthase and also the gene itself are described. Also cells, plants, tubers, microtubers and seeds of potato compris-ing said antisense fragments are described. Finally, amylopectin-type starch, both native and derivatised, derived from the potato that is modified in a genetically engineered manner, as well as a method of suppressing amylose formation in potato are de-scribed.
Patent CA-2098479-C (CA)
Title: Resectable self-expanding stent
Inventor: BURTON JOHN H
IPC: A61F2/90
Filed: 1991-11-22
Granted: 1996-10-15
Abstract: A stent (10) for transluminal implantation comprising a single-piece tubular member (12) having a fenestrated sidewall (18) exhibiting a pattern of uniformly spaced openings defined by intersecting strands (20, 22) where the strands (20, 22) are in-tegrally joined together at their points of intersection whereby the tubular member (12) can be radially compressed from a larger diameter to a smaller diameter by the application of a uniform inwardly directed radial force and which self-expands to a larger diameter when the radial compressive force is removed. The compression and subsequent self-expansion occurs without an ap-?reciable change in the stent's length. By forming the stent (10) from a thermoplastic material, it may later be resected by carving ?up into small pieces preferably using an electrosurgical instrument.
Patent CA-2104591-C (CA)
Inventor: RUSSO DAVID A
IPC: B32B9/00
Filed: 1992-12-21
Granted: 2000-03-14
Abstract: A composition for coating glass by chemical-vapor deposition comprises a mixture of a tin oxide precursor monobutyltin trichloride, a silicon dioxide precursor tetraethylorthosilicate, and an accelerant such as triethyl phosphite; the composition is gaseous below 200 °C, and permits coating glass having a temperature from 450 to 650 °C at deposition rates higher than 350 .ANG./ sec. The layer of material deposited can be combined with other layers to produce an article with specific properties such as controlled emissivity, refractive index, abrasion resistance, or appearance.
Patent CA-2107021-C (CA)
Inventor: LETUAL JEAN CLAUDE
IPC: F42B3/16
Filed: 1993-09-27
Granted: 2004-03-30
Abstract: The present invention is directed to an article of manufacture which provides a disc which both cleans primary charge contaminants on detonator cylinder walls, and shapes the preloaded primary charge in the containment chamber of the detonator.
Patent CA-2115772-C (CA)
Inventor: MANKOVITZ ROY J
IPC: H04N1/00
Filed: 1993-06-22
Granted: 2004-08-17
Abstract: Apparatus for providing auxiliary information of broadcast programs (100). The apparatus allows a user to instantaneously identify a broadcasting program by actuating a switch (116). An idenditification of the station broadcasting the program, the date and the time of the broadcasting program is registered in a memory upon actuation of the switch. The identification can then be sent to a center in which a schedule of the broadcast programs is scored, along with other auxiliary information which the respective broadcasters wish to provide. From the program identification, such information can then be retrieved and sent to the user. The identification information from the user is stored by the center and used to compile audience-monitoring statistics.
Patent CA-2116438-C (CA)
Title: Shower curtain supports
Inventor: RUGGIERO ANTHONY J
IPC: A47K3/38
Filed: 1992-08-28
Granted: 1996-02-06
Abstract: A shower curtain corner support (35, 36) which seals the shower area to prevent water and spray from escaping at the edges of the shower curtain (24, 25).  The corner support (35, 36) includes a body which is carried by the curtain rod, an inner beam (17, 19) directed into the shower area, and a counterweight (11) of sufficient moment to maintain the inner beam in a plane that is par-allel to the curtain rod.