baber/WOPTO huggingface dataset:
Patent CA-2192326-A1 (CA)
Title: Lottery ticket verification system
Inventor: BEHM WILLIAM F
IPC: G07B5/04
Filed: 1995-06-21
Abstract: Determination of the authenticity and integrity of lottery tickets is accomplished by using an electronic verification machine to compare data contained in electronic circuits printed on the ticket to document data printed on the ticket. The electronic circuits are printed on the ticket in conductive or semiconductive ink using, for example the gravure printing process, and the presence or status of the circuits can be used to verify or authenticate the ticket. Data can be represented in the electronic circuits by the electrical signature of the circuit which is measured by the electronic verification machine. A ticket can be validated by having the electronic verification machine determine which play spots have been removed from the ticket and comparing data on the ticket with the removed play spots to determine a play redemption value for the ticket. Lottery ticket validation can also be accomplished by transmitting signature data from the electronic circuits via the electronic verification machine to a central computer for comparison with ticket data.
Patent CA-2193792-A1 (CA)
Title: Ground heating system
Inventor: BROOKS RICHARD E JR
IPC: F28D9/00
Filed: 1996-12-23
Abstract: A ground heating system is provided comprising an internal combustion engine which has a shaft output and an exhaust gas stream.  An electric alternator/generator is driven by the shaft output of the engine.  A working fluid is provided for transferring heat to the ground.  A heat exchanger receives the exhaust gas from the internal combustion engine and transfers waste heat from the exhaust gas to the working fluid.  An electric heating element is provided for converting some of the electric output of the generator into heat and transferring this heat to the working fluid.  A pump circulates the working fluid through a ground-engaging heat exchanger.
Patent CA-2193996-A1 (CA)
Inventor: MONTANDON EUGENE N JR
IPC: B05C11/00
Filed: 1996-04-26
Abstract: A desktop book binding device for binding a stack of material such as paper along a stack edge using a cold set aqueous adhesive. The desktop book binding device is an office system having an adhesive storing compartment (26) fluidly connected to a disposable, non-refillable adhesive cartridge (10) with an applicator belt (32) therein. The applicator belt (32) applies adhesive to the plurality of edges when a carriage (200) drives the cartridge (10) along the sheets of paper.
Patent CA-2198465-A1 (CA)
Title: Mulching mower
Inventor: ELLSON BART T
IPC: A01D34/81
Filed: 1996-06-26
Abstract: A mulching lawn mower has a closed cutting chamber in a mulching mode such that the grass clippings are confined within the cutting chamber except for when they fall out through the open bottom face of the chamber. The cutting chamber has a first portion of toroidal or doughnut form generally closely surrounding the blade tips. In addition, the front portion of the cutting chamber includes a forwardly protruding wedge-shaped extension (48) having side walls (52) that converge towards one another in a pie-shaped fashion. The wedge-shaped extension further includes a top wall (50) that extends between the side walls. This top wall is sloped or inclined downwardly as it extends to the front of the mower such that the height of the wedge-shaped extension gradually decreases until the wedge-shaped extension disappears at its front edge. The wedge-shaped extension reduces power consumption of the mower when the mower is placed in its mulching mode and is used to mulch grass.
Patent CA-2201364-A1 (CA)
Inventor: MIYAMOTO KENICHIRO
IPC: C21C7/00
Filed: 1996-08-01
Abstract: The present invention relates to a molten steel refining method for refining molten steel, the carbon content of which is not more than 0.1 weight %, by blowing oxygen gas for decarburization at a blowing speed so that a cavity, the depth of which is 150 to 400 mm, can be formed on the surface of molten steel in a straight barrel type vacuum refining apparatus in which a straight barrel type vacuum vessel having no vessel bottom and a ladle are arranged. When necessary, the above decarburizing processing conducted by blowing oxygen gas is combined with: an A1 heating process in which A1 added into the vacuum vessel is burned by oxygen gas blown into the vacuum vessel at a blowing speed such that the cavity depth can be 50 to 400 mm; a degassing treatment conducted in a high vacuum condition; a desulfurizing treatment in which a desulfurizing agent is blown into the vacuum vessel; or a burner heating treatment in which a combustion improving agent is blown together with oxygen gas, wherein each treatment except for the high vacuum degassing treatment is conducted in a degree of vacuum of 100 to 400 Torr.
Patent CA-2204799-A1 (CA)
Title: Slurry supplying mechanism
Inventor: HUANG YU LIN
IPC: B65G53/30
Filed: 1997-05-08
Abstract: A mechanism for pumping slurry includes a housing for receiving the slurry and two cylinders secured to the housing for drawing the slurry into and out of cylinders. A pipe is pivotally secured to the housing and has one end for selectively aligning with either of the openings and for allowing the slurry to be supplied into the pipe by the cylinders alternatively.  The housing includes a pivotal follower for rotating the pipe and one or more actuators for rotating the follower and the pipe.
Patent CA-2208400-A1 (CA)
Title: Tail rotor authority control for a helicopter
Inventor: WOOD TOMMIE L
IPC: B64C27/82
Filed: 1995-09-27
Abstract: An apparatus for interconnection in a helicopter tail rotor control linkage (32) for changing the pitch of the tail rotor blades (36) in response to predetermined inputs is provided. The apparatus comprises a linkage member (46) having a variable geometry, an actuator (54), and a control unit (56). In a preferred embodiment, the control unit (56) utilizes a microcontroller (216) to monitor inputs corresponding to ambient air condition and automatically vary the maximum tail rotor pitch so as to provide maximum tail rotor authority over a range of altitudes.
Patent CA-2208738-A1 (CA)
Title: Cryogenic rectification system for producing low purity oxygen and high purity nitrogen
Inventor: BONAQUIST DANTE PATRICK
IPC: F25J3/04
Filed: 1997-06-26
Abstract: A double column cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from the higher pressure column is turboexpanded and condensed against lower pressure column intermediate liquid prior to being passed into the lower pressure column.
Patent CA-2218236-A1 (CA)
Title: Aglucone isoflavone enriched vegetable protein whey, whey protein material, aglucone isoflavone material, high genistein content material, and high daidzein content material and process for producing the same from a vegetable protein whey
Inventor: BRYAN BARBARA A
IPC: A23L11/30
Filed: 1997-10-14
Abstract: An aglucone isoflavone enriched vegetable protein whey, whey protein material, high genistein material, high daidzein material, and aglucone isoflavone material are provided, as well as a process for producing the same from a vegetable protein whey. Isoflavone conjugates in a vegetable protein whey are converted to isoflavone glucosides by treating the whey at a temperature and a pH for a period of time sufficient to effect the conversion.   The isoflavone glucosides are converted to aglucone isoflavones by enzymatic reaction to produce an aglucone isoflavone enriched vegetable protein whey.      Aglucone isoflavone whey protein material is recovered from the aglucone isoflavone enriched vegetable protein whey. A high genistein content material, a high daidzein content material, and an aglucone isoflavone material are produced from an alcohol extract of the aglucone isoflavone whey protein material.
Patent CA-2219380-A1 (CA)
Title: Improved processing of polyphthalamide monofilament
Inventor: REITHER JOHN
IPC: D01F6/48
Filed: 1997-10-24
Abstract: Monofilaments useful in papermaking fabrics which contain blended polyphthalamide and fluoropolymer and a process for making these monofilaments. These monofilaments have improved dry heat stability, knot strength, loop strength and abrasion resistance. The process reduces polymer shear in the extruder and eliminates polymer build up on the spinneret face.
Patent CA-2220228-A1 (CA)
Inventor: CARTER WILLIAM L
IPC: C04B35/65
Filed: 1996-06-05
Abstract: A novel process of the production and processing of high quality, high Tc (Bi,Pb)SCCO superconductors starts with fabrication of a precursor article including selected intermediate phases with desired chemical and structural properties. The precursor fabrication includes introducing the reacted mixture having a dominant amount of the tetragonal BSCCO phase into a metal sheath, and sealing the reacted mixture within said sheath, heating the mixture at a second selected processing temperature in an inert atmosphere with a second selected oxygen partial pressure for a second selected time period, the second processing temperature and the second oxygen partial pressure being cooperatively selected to form a dominant amount of an orthorhombic BSCCO  phase in the reacted mixture. The sealed sheath is deformed to form an elongated precursor article of a desired texture; and thereafter heated at a third selected processing temperature in an inert atmosphere with a third selected oxygen partial pressure for a third selected time period. The third processing temperature and third oxygen partial pressure are cooperatively selected to convert at least a portion of the orthorhombic BSCCO phase to the final superconducting BSCCO material.
Patent CA-2222315-A1 (CA)
Inventor: MUROI TOSHIYUKI
IPC: B22D11/10
Filed: 1997-11-26
Abstract: The invention is related to a continuous casting nozzle for casting of aluminum killed steel without clogging of the bore of the nozzle.       The surface layer of the bore of the continuous casting nozzle contacting with the molten steel is composed of a refractory comprising graphite from 10 to 36 wt%, a neutral or basic aggregate from 30 to 50 wt% like Al2O3 and pottery stone as the rest part of the above mentioned refractory.
Patent CA-2222749-A1 (CA)
Title: Methods and apparatus for providing a prepaid, remote entry customer account
Inventor: TASKETT JOHN M
IPC: G06Q20/34
Filed: 1996-06-03
Abstract: Methods and apparatus for providing prepaid (100), remote entry customer accounts suitably comprise a system (208) for generating accounts with dedicated authorization codes from a remote terminal (206). The account, suitably associated with a computer, is created when funds are supplied from a remote terminal (208). The computer then provides an account number and an authorization code to the account holder. The authorization code (12) (Fig. 1) may then be used to access the funds associated with the account.
Patent CA-2228513-A1 (CA)
Title: Isomerisation process
Inventor: ROZEMA MICHAEL JOHN
IPC: C07B55/00
Filed: 1996-08-01
Abstract: A process for the preparation of a compound of formula (I), wherein R is a hydroxyl protecting group which comprises isomerisation of a compound of formula (II), wherein R is a hydroxyl protecting group.
Patent CA-2228793-A1 (CA)
Title: Texture multicouche liee pour materiaux composites structuraux
Inventor: BILLAUT FRANCOIS
IPC: D03D25/00
Filed: 1998-02-02
Abstract: L'armure de base comprend d'une part vingt-huit fils de trame (1 à 28), répartis en huit colonnes (C1 à C8) alternativement de quatre fils et de trois fils superposés, avec disposition en quinconce sur sept niveaux (N1 à N7), et d'autre part douze fils de chaîne (29 à 40), disposés sur quatre plans parallèles contenant, chacun, trois fils de trame parallèles superposés. Dans chaque plan, des fils de chaînes relient les fils de trame extrêmes supérieurs (1, 8, 15, 22) aux fils de trame intermédiaires, et les fils de trame intermédiaires aux fils de trame extrêmes inférieurs (4, 11, 18, 25). Application à la réalisation de pièces en matériaux composites fortement sollicitées et/ou soumises aux impacts.
Patent CA-2231808-A1 (CA)
Title: Stereoselective microbial reduction process
Inventor: PREVITE EDWARD
IPC: C12P7/42
Filed: 1996-09-26
Abstract: A stereoselective reduction of compound of formula II to compound of formula I, which comprises adding compound of formula II  to a culture broth of the Zygosaccharomyces bailii ATCC 38924, incubating the resulting mixture, and isolating a hydroxy compound of formula I, is described. A stereoselective reduction of a compound of formula IV to compound of formula III, which comprises adding a compound of formula IV to a culture broth of Schizosaccharomyces octosporus ATCC 2479, incubating the resulting mixture, and isolating a hydroxy compound of formula III is also described. The resulting compounds of formula I and III are useful as intermediates in the preparation of 1-(4-fluorophenyl)-3(R) -[3(S)-hydroxy-3-(4-fluorophenyl)propyl)]-4(S)-(4-hydroxyphenyl)-2-azetidionone which is a serum cholesterol lowering agent.
Patent CA-2233914-A1 (CA)
Title: Dispositif de connexion d'au moins deux fils conducteurs gaines
Inventor: LACROIX JACQUES
IPC: H01R4/24
Filed: 1996-09-26
Abstract: Le dispositif comprend un boîtier, avec un passage d'introduction d'une portion d'extrémité des fils gainés, un linguet de réception desdites portions d'extrémité dans le boîtier, un clip (12) agencé pour être introduit dans le boîtier transversalement aux gaines, avec au moins deux fentes (13) pour saisir les gaines des fils et les tirer vers l'intérieur et le fond du boîtier et agencé pour coopérer avec le linguet pour dénuder les fils. Il est aussi prévu des moyens d'entretoise (52, 53) entre le linguet et le clip de saisie et de tirage (12) pour maintenir leur écartement supérieur à un seuil de coupe.
Patent CA-2234596-A1 (CA)
Title: Diffusion bonding apparatus for pipes
Inventor: TSUCHIYA MASAKI
IPC: B23K20/02
Filed: 1998-04-09
Abstract: A diffusion bonding apparatus for pipes that are supplied downward from above comprising a lower block for holding a lower pipe and an upper block for holding and pressing an upper pipe against the lower pipe. In the apparatus, three or more hydraulic cylinders are provided in a lifting member of the upper block about a joint where the upper pipe is held in such manner that the cylinders are located in a circumference of a circle.
Patent CA-2235045-A1 (CA)
Title: Impeller assembly with asymmetric concave blades
Inventor: BAKKER ANDRIES
IPC: B01F3/04
Filed: 1998-04-15
Abstract: An impeller assembly for agitating a fluid contained in a vessel and dispersing a gas introduces therein.  The impeller assembly includes an impeller having a plurality of generally radially extending blades.  Each of the blades includes diverging upper and lower sheet-like portions having generally radially extending leading edges. The upper and lower portions are joined to form a generally V-shaped cross-section with a trailing vertex.  The width of the upper portion of each blade is greater than the width of the lower portion of the blade such that the upper portion leading edge extends forwardly of the lower portion leading edge, thus producing an upper portion overhang to capture and disperse rising gas bubbles.  The impeller assembly further comprises a drive assembly for rotating the impeller assembly.
Patent CA-2235688-A1 (CA)
Inventor: DOLAN MICHAEL FRANCIS
IPC: H04W36/38
Filed: 1998-04-23
Abstract: In a wireless telecommunications system including a mobile switching center, a source base station and a target base station, a method for allowing the target base station to choose a handoff type is disclosed. More particularly, the source base station specifies handoff type options which are sent to the target base station. The target base station chooses a particular handoff type and the call handoff is processed in accordance with that selection. Advantageously, multiple messages between the source base station and the target base station for agreement of handoff type are eliminated.
Patent CA-2236850-A1 (CA)
Title: Electrochemical cell
Inventor: MAXWELL IAN ANDREW
IPC: G01N27/42
Filed: 1996-11-15
Abstract: A method of manufacture of a thin layer electrochemical cell (Figs 12, 14) comprising the steps of: forming an aperture (11) extending through a sheet (1) of electrically resistive material, said aperture defining a side wall of the cell; mounting a first thin electrode layer (13) to one side of the sheet and extending over aperture (11) whereby to define a cell first end wall; mounting a second thin electrode layer (13) to the other side of the sheet and extending over aperture (1l) whereby to define a second cell end wall in substantial overlying registration with the first electrode; and providing means (16) for admission of a liquid into the cell.
Patent CA-2237299-A1 (CA)
Title: Composes et procedes de detection et de prevention d'infections par t. cruzi
Inventor: SKEIKY YASIR A W
IPC: G01N33/53
Filed: 1996-11-14
Abstract: Composés et procédés de diagnostic d'infections par Trypanosoma cruzi. Les composés décrits sont des polypeptides, ou des anticorps contre ceux-ci, contenant un ou plusieurs épitopes d'antigènes de T. cruzi. Les composés sont utiles dans divers immunotitrages de détection d'infection par T. cruzi. Les composés polypeptiques sont également utiles dans des vaccins et des compositions pharmaceutiques destinés à conférer une immunité protectrice contre la maladie de Chagas chez des individus exposés à T. cruzi.
Patent CA-2240123-A1 (CA)
Title: Recovery of tocopherols
Inventor: HUNT TRACY K
IPC: C07D311/72
Filed: 1996-12-06
Abstract: Starting from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and optionally sterol and/or sterol derivatives, the free fatty acids present in the mixture are esterified with an alcohol and fatty glycerides are transesterified with an alcohol in the presence of a zinc oxide and/or zinc hydroxide catalyst. After the esterifications, the excess lower alcohol is distilled off from the reaction mixture. The transesterification catalyst and the glycerol present, if any, are removed and the fatty acid alkyl ester is distilled off from the mixture. Distillation of fatty acid alkyl esters can be accomplished with a packed column in sequence with a wiped film evaporator. The simultaneous recovery of tocopherol and sterol is possible. Tocopherols and sterols can be separated by the crystallization of sterols from a blend of organic solvents.
Patent CA-2240183-A1 (CA)
Title: Composes de bases de schiff contenant du cobalt
Inventor: MEADE THOMAS J
IPC: C12N9/99
Filed: 1996-12-12
Abstract: L'invention se rapporte à des composés de cobalt dans lesquels le cobalt divalent ou trivalent est complexé avec des bases de Schiff tétradentées solubles dans l'eau. Les bases de Schiff tétradentées contiennent de préférence deux atomes d'azote et deux atomes d'oxygène jouant le rôle d'atomes de coordination. Ces composés peuvent contenir des fractions de ciblage de polypeptides ou d'acide nucléique et peuvent être utilisés pour inhiber des enzymes telles que la thrombine et des protéines à doigts de zinc.
Patent CA-2242981-A1 (CA)
Title: Method and apparatus for preventing biofouling in cooling water system
Inventor: TANIMURA YASUHIRO
IPC: C02F1/78
Filed: 1998-07-13
Abstract: A method for preventing biofouling in a cooling water system wherein ozone of high density is intermittently injected into a circulating line of a cooling water system in which cooling water is made to circulate in a closed system which includes a cooling tower and a heat exchanger. There is further disclosed an apparatus for preventing biofouling in a cooling water system, comprising an ozone generator for producing ozone, an ozone reservoir for temporarily storing the produced ozone, and an ozone injector for injecting the stored ozone into a circulating line of a cooling water system. Biofouling can be economically and reliably prevented.
Patent CA-2244128-A1 (CA)
Title: Candle wick holder
Inventor: LEONARD STEPHEN B
IPC: F21V35/00
Filed: 1997-01-24
Abstract: A wick holder is disclosed, along with blanks for forming it, candles that incorporate it, and methods for making it. The wick holder has platforms for supporting the bottom of the wick (40) and side peripheral guides. It also has leg panels (11, 12) to center the wick in the candle.
Patent CA-2244683-A1 (CA)
Title: Pipelined sample and hold circuit with correlated double sampling
Inventor: MALLINSON MARTIN
IPC: G11C27/02
Filed: 1997-11-19
Abstract: A signal sampling circuit for performing correlated double sampling (CDS) of an input signal with a pipelined sample and hold architecture includes a time multiplexed integrating amplifier circuit in which the output circuit is a pipelined sample and hold circuit which provides time multiplexed input signal samples and the feedback integration capacitor is discharged between samples.  At all times, one of the channels of the pipelined sample and hold circuit is providing one of the time multiplexed input signal samples while the other channel continues tracking the input signal. The feedback integration capacitor acts as a clamp to null out residual reset noise received as part of the input signal to be sampled. Hence, with the exception of that very brief period of time necessary for switching between the two pipelined sample and hold circuit channels, one of the two pipelined sample and hold circuit channels is always available for signal acquisition.
Patent CA-2247016-A1 (CA)
Inventor: SCHWARZ MARGARETE
IPC: A61K38/46
Filed: 1997-02-18
Abstract: Described is a method of purifying thrombin-like protease enzymes from snake venom, the method consisting of freeing the enzymes of impurities in three chromatographic stages.
Patent CA-2247080-A1 (CA)
Inventor: KIM HANG GOO
IPC: F27B15/08
Filed: 1996-12-28
Abstract: A fluidized bed type reducing system (20) for reducing fine iron ore consisting of a lower upper-wide-narrow-lower shape tapered portion (212) and an upper cylindrical portion (211). The extremely fine iron ore discharged together with the reducing gas is recycled by a duct (115) connected to the upper part of the cylindrical portion (211), a capturing device (12) for separation of the extremely fine iron ore from the reducing gas and further duct (121) for refeeding the separated extremely fine iron ore to the system (20). The upper iron ore outlet (113) for discharging fine iron ore particles, the iron ore inlet (112) for charging iron ore with wide particle size distribution and the lower iron ore outlet (114) for discharging coarse iron ore particles are connected to the tapered portion (212) of the system. The extremely fine iron ore supplying tube (121) is installed on another side of the said tapered portion (212).
Patent CA-2247603-A1 (CA)
Title: Optical disc, recording apparatus, and computer-readable recording medium
Inventor: MURASE KAORU
IPC: G11B27/034
Filed: 1998-09-17
Abstract: An optical disc including: a data area storing one or more video objects; and a time map area storing time map information. Each video object includes a plurality of video object units. The time map information includes a pair of a first time table and a second time table for each video object. Each first time table includes: addresses of video object units in a corresponding video object; and indicators. The addresses are arranged in order and indicate storage positions of the video object units that correspond to reproduction points that differ by a predetermined time unit. The predetermined time unit is longer than a maximum reproduction period of a video object unit. The indicators specify the video object units which respectively correspond to the addresses. Each second time table includes an entry for each video object unit in the corresponding video object. The entries are arranged in order. Each second time table includes a reproduction period and a data size of each video object unit.