baber/WOPTO huggingface dataset:
Patent CA-2247284-A1 (CA)
Inventor: WEBER MICHAEL F
IPC: G02B1/00
Filed: 1997-01-17
Abstract: An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.
Patent CA-2247971-A1 (CA)
Title: Mail code evaluation system
Inventor: BAKER PETER N
IPC: G06V30/224
Filed: 1997-03-06
Abstract: A system for evaluating barcoded mail which includes an imaging device (32) to provide an image corresponding to an image of a barcode or an address of a mail piece. The system also includes an output device (60, 62) for providing evaluation results and a processor receiving the image signal from the imaging device. The processor (50) generates an address information signal corresponding to the barcode and an address block image signal corresponding to the address. The processor (50) provides an output signal to the output device (60, 62) in accordance with the address information signal (350) and the address block (352) image signal. The output device responds to the output signal to provide an address information image corresponding to the address information signal and an address block image corresponding to the address block image signal for visual comparison (60). The system also evaluates an image of a mail piece barcode to detect and categorize barcode defects for reporting with a visual facsimile of the barcode.
Patent CA-2250506-A1 (CA)
Inventor: PLOTTIER GERARD
IPC: B23K9/09
Filed: 1998-10-13
Abstract: L'invention a trait à un procédé et un dispositif de soudage MIG avec protection gazeuse et à régime spray modulé de l'aluminium, en particulier des alliages d'aluminium ou des aciers inoxydables, dans lequel on opère une modulation du courant à une fréquence de modulation inférieure à 60 Hz. Le gaz de protection contient au moins 90% d'hélium, d'argon ou d'un de leurs mélanges, et d'au plus 1.95% d'au moins un composé gazeux minoritaire, choisi parmi l'oxygène et le dioxyde de carbone. Ce procédé permet d'obtenir un dégazage efficace de la majeure partie de l'hydrogène diffusible susceptible de se trouver dans le bain de métal en fusion et d'améliorer l'aspect et la qualité des cordons de soudure ainsi réalisés sur les pièces ou équipements destinés à l'industrie du transport ferroviaire, naval, aéronautique, routier ou spatial, ou à l'industrie chimique, pétrochimique, électronique, nucléaire ou agrochimique.
Patent CA-2253303-A1 (CA)
Inventor: KUEHN HANS
IPC: B65D41/34
Filed: 1997-04-30
Abstract: Plastic tubes are disclosed, in particular those with a locking mechanism which consists of a locking cam (110) and a locking recess (30) for ensuring a reliable engagement of the cap of the tube with the tube. Also disclosed are plastic tubes with a sealing strip (300) designed on the cap (100) of the tube and which according to the invention has certain preferred embodiments.
Patent CA-2254220-A1 (CA)
Title: Reduction of iron ore in ore/coal mixtures
Inventor: HUANG DIANBING
IPC: C21B11/08
Filed: 1998-11-16
Abstract: A process of reduction of iron ore and/or waste oxides in the form of agglomerate containing carbonaceous reductant in a rotary hearth furnace includesproviding a bed of agglomerates in a rotary hearth furnace, the bed having a height of at least 40mm and the carbonaceous reductant containing sufficient volatile matter, and heating the bed of agglomerates with a radiant heat source at least 1450°C to cause the top of the bed to reach a temperature in the range of 1350°C to 1500°C to reduce iron oxides in the iron ore and/or waste oxides to metallic iron.
Patent CA-2257401-A1 (CA)
Title: Variable tiered interest rate revolving credit system and method
Inventor: ROBINETTE VICKY
IPC: G06Q30/00
Filed: 1998-12-22
Abstract: A method and a system for operating a revolving credit program utilizing a table of tiered, variable interest rates in which one of the interest rates is applied as a finance charge to a remaining outstanding balance of an account depending upon the percentage that payments made during a billing cycle comprise of an account parameter, such as the outstanding balance, a highest balance or a beginning balance. In the preferred embodiment the applied interest rate is determined by the percentage the outstanding balance is reduced by payments on the balance during a billing cycle. Also in a preferred embodiment of the invention, the tiered interest rate table is structured to apply progressively reduced interest rates to outstanding balancesreduced by progressively greater payment percentages from the previous billing cycle, thereby encouraging a credit customer to make larger payments and pay down the outstanding balance faster. The interest rate of each tier is tied to, and floats with, an index, such as the Prime Rate, so that each tier represents a different spread, or increase over, the index. Also in the preferred embodiment, the system calculates and displays the minimum payments necessary to reduce the outstanding balance to meet each tier of the interest rate table.
Patent CA-2259240-A1 (CA)
Title: Microfinishing machine
Inventor: GORG DONALD A
IPC: B24B49/00
Filed: 1997-07-15
Abstract: A sizing and finishing machine includes a mechanism for rotating an associated workpiece (50) and a first microfinishing belt (16) for selectively contacting the associated workpiece (50). The belt (16) has a maximum grit size of 60 microns. A structure is provided for rotatably holding the first microfinishing belt (16) and a housing (42) is provided on which the structure is mounted. A mechanism moves the first housing (42) and hence the first microfinishing belt (16) toward and away from the associated workpiece (50).  The mechanism is timed to the rotation of the associated workpiece (50) to maintain a substantially constant pressure of the first microfinishing belt (16) on the associated workpiece (50). If desired, a second microfinishing belt (16) can be provided with the two housings (42) and their respective belts (16) being separately controlled. The force exerted by the microfinishing belt (16) on the associated workpiece (50) is limited to a pressure of less than approximately 25 psi.
Patent CA-2260563-A1 (CA)
Title: Hydrogen sensor using a solid hydrogen ion conducting electrolyte
Inventor: MAFFEI NICOLA
IPC: G01N27/407
Filed: 1999-02-01
Abstract: A reliable gaseous hydrogen detection and measuring device which is simple, easy to use, does not require any reference gas supply, and which can be of reasonably rugged construction. The device utilises a disc comprising a solid state ceramic hydronium conductor of the general formula Na(H3O) x Zr2Si x P (3-x) O12 together with a silver based electrode system on one side, and a catalytic noble metal electrode, such as platinum, on the other. By measurement of the output voltage across the electrodes, both the presence, and the amount, of hydrogen in a gaseous system can be determined.
Patent CA-2260783-A1 (CA)
Title: System, apparatus and method for heating metal products in an oscillating induction furnace
Inventor: GROW ROBERT J
IPC: H05B6/10
Filed: 1997-06-13
Abstract: Heating system and method for heating metal products (18) include an oscillating induction furnace (10) comprising a plurality of induction coils (20) interspersed with a plurality of rollers (26). The metal products (18) are oscillated within the induction coils (20) on the rollers (26) until heated to a target temperature. A logic device determines the power for the coils (20), the number and speed of oscillation passes to conduct and the duration in the induction furnace (10). The power supplied to the initial and final induction coils (20) is metered by the logic device according to the proximity of the metal product (18) to the initial and final induction coils (20). When heating a combination of metal products (18), each metal product (18) can be separately loaded into and discharged from the furnace (10). Once the hottest of the metal products (18) is brought to within a predetermined range from a target temperature, the furnace (10) maintains the temperature of the metal products (18) within the predetermined range until a downstream processing station (16) signals that it is ready to receive a heated metal product (18), at which time the hottest of the metal products (18) is discharged from the furnace (10).
Patent CA-2262079-A1 (CA)
Title: Biodegradable complexing agents for heavy metals
Inventor: BOGAERT PIET MARC PAUL
IPC: B09C1/02
Filed: 1997-07-14
Abstract: Heavy metals can be effectively complexed with a derivative of a fructan, which derivative contains complexing groups chosen from -X-CY-ZM, -X-CY-ZM, -X-CY-S-S-CY-X-Q, -PY'(-Z'M)2, -SO3M and -NR-CH2-COOM, where M is a metal or hydrogen, Q denotes the residue of an alcohol or polyol, R is hydrogen or carboxymethyl and X, Y, Y'.  Z and Z', independently of one another, are O, S or NH and at least one of X, Y and Z is S, with a degree of substitution of 0.1-2.5.  The complexing groups are in particular xanthate, xanthide or dithiocarbamate groups.
Patent CA-2262732-A1 (CA)
Title: Rotary electrical machines
Inventor: HALL JUSTIN ARTHUR
IPC: H02K21/24
Filed: 1997-08-05
Abstract: A rotary electrical machine comprising a plurality of disc-shaped stator stages and a plurality of disc-shaped rotor stages, each of the rotor stages being respectively alternately interleaved with the stator stages. A space is provided between each stator stage and its adjacent rotor stage. Each of the stator stages is provided with at least two stator windings, defining a passage therebetween adjacent windings. A coiled pipe is disposed in or formed integrally with each of the passages in substantially the same plane as the stator stage, such that the outlet of one pipe is coupled with the inlet of the pipe disposed in the adjacent passage.      In use, fluid, for example, air, helium, water or oil is caused to flow around the coiled pipes in the passages between the stator windings. At the same time, cooling gas, for example, air or helium, is caused to pass through the stator-rotor spaces so as to cool the magnets, etc. and the retention hoops, etc. of the rotor stage as well as the outer surfaces of the stator stage. Alternatively, the stator-rotor spaces may be held under a vacuum.
Patent CA-2262744-A1 (CA)
Title: Polymerizable dental composition
Inventor: HINO KENICHI
IPC: A61K6/083
Filed: 1998-06-04
Abstract: A polymerizable composition for dental use, containing monomer (a) with a polymerizable olefinic unsaturated group, acylphosphine oxide (b), organic peroxide (c), tertiary amine (d) and aromatic sulfinic acid and/or a salt thereof (e). The polymerizable composition for dental use exerts excellent curability by any of photo-polymerization and chemical polymerization, having a good color for dental use, with less color change between prior to and after polymerization, and excellent light resistance, producing a cured product with a smaller thickness of the unpolymerized layer on the surface, having larger curing depth and excellent adhesion to teeth and metals and the like and great color fastness in hot water and in darkness. By taking advantages of these excellent properties, the polymerizable composition can effectively be used for utilities, for example as a bonding agent, a composite resin, an adhesive agent, a primer and an opaque primer and the like, for dental use.
Patent CA-2271152-A1 (CA)
Inventor: SCHAFFER KURT-MICHAEL
IPC: H01R4/64
Filed: 1997-11-07
Abstract: The sub-rack contains at least two central cross-tracks (16,20) placed back to back and disposed on its front or rear side (25). A contact strip (1) is placed on the inner side (26) of one of the two central cross-tracks (16) opposite the front or rear side (25) of the sub-rack. Said strip has extended, elongated projecting contact studs (2) which reach into the gap (19) between the two central cross-tracks (16,20) which are arranged back to back.
Patent CA-2271417-A1 (CA)
Title: Porous coating pigment and a method for its production
Inventor: SILENIUS PETRI
IPC: B41M5/00
Filed: 1999-05-07
Abstract: The invention is based on the idea of preparing porous calcium carbonate particles via a degradation reaction from a crystalline initial material which contains the initial components for forming calcium carbonate and additionally initial components for forming the reaction products to be removed from the initial material. In the reaction a substantial portion of the calcium carbonate forms a porous frame in the space occupied by the initial material, around the open space left by the matter leaving the initial material. The invention is also based on the use of such porous calcium carbonate particles as a pigment absorbing printing inks or their solvents on the surface of a printing substrate.
Patent CA-2271682-A1 (CA)
Title: Copper alloy and process for obtaining same
Inventor: BHARGAVA ASHOK K
IPC: C22C9/04
Filed: 1997-08-05
Abstract: A copper base alloy consisting essentially of tin in an amount from about 1.0 to 11.0 % by weight, phosphorous in an amount from about 0.01 to 0.35 % by weight, iron in an amount from about 0.01 to about 0.8 % by weight, optionally up to 15 wt.% zinc, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.
Patent CA-2272440-A1 (CA)
Title: Flame retardant polymer compositions
Inventor: HALL DONALD K
IPC: C08L29/12
Filed: 1999-05-17
Abstract: A composition that includes a hydrated inorganic filler and a polymer blend is disclosed. The polymer blend includes a polymerization or copolymerization product of one or more ethylenically unsaturated monomers. In addition, the polymer blend includes an aliphatic polyketone. The incorporation of aliphatic polyketone with polyethylene based polymers or copolymers results in dramatic improvements in both drip resistance and char strength; moreover, the composition of the present invention can use reduced amounts of hydrated inorganic filler relative to conventional polyethylene based compositions.  This reduction in the amount of hydrated filler is expected to lead to improvements in physical properties and extrudability not otherwise possible. These properties make the compositions of the present invention particularly useful as an outer layer for electrical wires, optical fibers, or cables containing at least one wire, optical fiber, or both.
Patent CA-2272912-A1 (CA)
Inventor: BOWMAN RICHARD J
IPC: G05B15/02
Filed: 1997-11-21
Abstract: Featured is a device controller (10) in a system having a multiplicity of such controllers and conveying system and method for controlling a multiplicity of devices (2, 4) using such controllers. Each controller includes a plurality of bi-directional communication ports (14a, 14b, 15a, 15b), a processor (12) that processes information and provides outputs, where at least one output controls the device, and an application program for execution within the processor (12) that includes instructions and criteria for processing the information and providing the processor outputs. Specifically, the applications program includes instructions and criteria for communicating information between and among controllers; instructions and criteria for processing information received by a controller; and instructions and criteria for modifying the operation of a device responsive to the communicated information. For a conveying system having a multiplicity of conveying sections, a controller is provided for each section.
Patent CA-2273942-A1 (CA)
Title: Process for the preparation of an organozinc reagent
Inventor: FIELDEN JAN MICHAEL
IPC: C07B53/00
Filed: 1997-12-15
Abstract: A process for the preparation of an aromatic organozinc compound is provided.  The process comprises reacting a zinc chloride, bromide or iodide and an organometallic compoud of another metal comprising an aromatic moiety, producing a reaction product comprising an organozinc compound and a halide salt of the other metal. The reaction product is then contacted with a liquid hydrocarbon, in which the organozinc compound is soluble and the halide salt of the other metal is of low solubility. The halide salt of the other metal is separated from the hydrocarbon, and the organozinc compound can be recovered from the hydrocarbon. Organozinc compounds produced by this process can be employed to generate chiral centres in suitable substrates.
Patent CA-2278777-A1 (CA)
Inventor: QUAN RONALD
IPC: H04N5/913
Filed: 1998-02-04
Abstract: A method and apparatus are disclosed for disabling the effect of copy protection signals embedded in video signals, wherein the detection and modification of the copy protection signals is accomplished in the RF domain rather than in the baseband video domain as typically accomplished at the present time. To this end, various embodiments are disclosed for deriving a timing control signal from the modulated RF carrier signal, which timing control signal is indicative of the television lines which contain the copy protection signals. Several techniques in the RF domain responsive to the timing control signal are disclosed for replacing, attenuating, suppressing, pulse narrowing or otherwise modifying the modulated RF carrier signals during the interval of the copy protection signals to disable the effects thereof, to allow the making of acceptable recordings during demodulating subsequently by, for example, a record VCR. Also disclosed are means for adding copy protection signals to an RF carrier signal modulated with a video signal by modulating, for example, the protection signals onto the RF carrier signal in the RF  domain.
Patent CA-2281114-A1 (CA)
Inventor: OERTLE ERWIN
IPC: G06K1/12
Filed: 1999-08-25
Abstract: In a method and a device for depositing a picture of a user (B) on a document (D) firstly a digital picture (I) of a user is manufactured. The digital picture is produced in a recording device (10). The recording device (10) allocates a unique identification code (C) to the digital picture and stores the picture and the identification code (C) in a central storage medium.   The recording device (10) issues the identification code (C). The identification code (C) may be read-in in a document issuing device (20). The document issuing device (20) on account of the identification code (C) loads the digital picture allocated to the identification code from the central storage medium (11) and deposits the picture on a carrier.
Patent CA-2289697-A1 (CA)
Inventor: FELS DEBORAH INGRID
IPC: H04N7/15
Filed: 1998-05-06
Abstract: This invention relates to an apparatus for the projection of a remote conferee's presence into a group meeting environment by usin a combination of videoconferencing/teleconferencing and robotics technology. The remote conferee's face is shown substantially life-size on a video monitor. The remote conferee's eyes appear to be looking directly at the viewer. The video monitor can turn left or right to point at the person speaking, automatically or by manual control, to give the impression that the remote conferee is turning his head to look at the person speaking. The video screen can be raised and lowered to give the impression that the remote conferee is standing up and sitting down. An attention-getting mechanism prompts the attention of the other conferees when the remote conferee wants to interrupt or enter a conversation.
Patent CA-2294515-A1 (CA)
Inventor: PALEPU NAGESWARA R
IPC: A61P9/00
Filed: 1998-06-26
Abstract: This invention relates to (E)-.alpha.-[2-n-butyl-1-[(4-carboxyphenyl)methyl]-1H-imidazol-5-yl]methylene-2-thiophenepropionic acid monomethanesulfonate monohydrate, compositions containing the compound and methods of using the compound to block angiotensin II  receptors and to treat hypertension, congestive heart failure and renal failure.
Patent CA-2295230-A1 (CA)
Title: Method for the combined exploitation of mining fields
Inventor: BORSCH-KOMPONIETS VITALY IVANO
IPC: E21C41/00
Filed: 1998-08-27
Abstract: The present invention relates to the mining industry and can be used for mining mineral deposits, regardless of their thickness or stratification angle, allowing a reduction in the volume of overburden operations. The invention provides for clearing to a deposit through mining, removing the main reserves by open pit operations, with safety benches (15) being formed on the open pit's steps (6). The reserves of each level (3) are mined by blasting downcast holes, when viewed from the top, in the direction of steps (6), with safety prisms (7) being formed at a design contour thereof. The prisms are broken down during the final stage of work on each level to leave a vertical or close to vertical slope within each level. The rock bulk created in the process of destroying safety prisms (7) is bypassed into mine transport workings of an underlying level (3), whereupon it is removed to the surface. Rocks of the massif around the contour are reinforced by injecting and/or mounting prestressed anchors (11).
Patent CA-2295738-A1 (CA)
Inventor: GOBBLE HAROLD
IPC: A23L1/164
Filed: 1998-03-02
Abstract: A cereal-based food product having a dried rice syrup coating at least on the surface thereof with an improved bowl life and a method of producing such a product. The food products have enhanced texture and extended bowl life. In addition, this invention relates to the use of rice syrup to deliver a flavoring, a coloring and/or a fortificant to a cereal-based food product. This invention also relates to a method for reducing the amount of sugar in a cereal based food product sweetened with sugar without reducing the bowl life of the food product and to a method for adhering particulate matter to the cereal-based food product.
Patent CA-2298063-A1 (CA)
Title: Mycobacterium strain with modified erp gene and vaccine composition containing same
Inventor: GICQUEL BRIGITTE
IPC: C12N1/21
Filed: 1998-07-22
Abstract: The invention concerns Mycobacterium strains whereof the erp gene is modified and a vaccine composition containing same. The modification of the erp gene decreases the virulence and the persistence of the Mycobacterium strains.
Patent CA-2298194-A1 (CA)
Inventor: LEGENDRE ALEXANDRE G
IPC: H04W4/029
Filed: 2000-02-07
Abstract: The present invention is a system and method for targeting and sending advertising and content messages to wireless users via standardized message channels of the wireless network assuring strict individual privacy of wireless users. The network contains a plurality of clusters comprising two physical nodes communicating with each other via a public network. The first, the mediation server receives raw positioning data from the wireless network and sends generic mobility data with encrypted personal identities to the profiling server. This latter tracks and profiles real-time and non-real time mobility data compiling data bases of wireless user profiles to permit targeting of individual advertisements.  The profiling server targets multimedia-advertising messages to users with matching profiles and forwards those messages to the mediation server for encryption and further message compilation and transport. Wireless user privacy is achieved by separation of data collection and message transmission functions from the profiling and targeting functions.