baber/WOPTO huggingface dataset:
Patent CA-2272942-A1 (CA)
Title: Bonding bio-active materials to substrate surfaces of medical devices via hydrophilic spacers
Inventor: PATNAIK BIRENDRA K
IPC: A61L27/34
Filed: 1997-11-18
Abstract: A medical device having a bio-active coating is prepared by providing a polymeric substrate having hydroxyl and/or amine functionality on a surface thereof and applying the bio-active coating to the surface. The bio-active coating is the reaction product of two different reactions. The first reaction includes reacting the polymeric substrate with a hydrophilic, isocyanate-terminated spacer having at least one isocyanate group at its first and second ends. The second reaction includes reacting a remaining, unreacted isocyanate-terminated end of the spacer with a bio-active agent to bond the bio-active agent to the spacer.
Patent CA-2272943-A1 (CA)
Title: Apparatus for charging batteries
Inventor: BROTTO DANIELE C
IPC: H02J7/00
Filed: 1999-05-20
Abstract: A method for charging a rechargeable battery pack includes identifying battery capacity, determining sampling interval length according to the battery capacity, and implementing the determined sampling interval length. Also disclosed herein is a method for charging batteries comprising identifying battery capacity, determining current-on period length in duty cycle according to the battery capacity, and implementing the determined current-on period length. Further, disclosed herein is a battery charging apparatus comprising a charger for charging first and second batteries, where the first battery comprises a microprocessor. The charger further comprises at least one terminal for receiving a battery identification signal, so that the charger can distinguish between the first and second batteries. Also disclosed herein is a battery/charger combination comprising a battery comprising first, second and third terminals, at least one cell disposed between the first and second terminals and a microprocessor disposed within the battery between the first and third terminals, a charger connected to the battery via the first, second and third terminals, wherein the microprocessor controls charging of the battery by sending instructions to the charger.
Patent CA-2273054-A1 (CA)
Title: Method for recovering gas from hydrates
Inventor: HUANG DAVID DA-TEH
IPC: E21B36/00
Filed: 1997-12-19
Abstract: Gas is recovered from a clathrate hydrate (100) by providing the clathrate hydrate (100) within an occupying zone (102), positioning a source of electromagnetic radiation (200) within the clathrate hydrate occupying zone (102), and applying electromagnetic radiation from the electromagnetic radiation source (200) to the clathrate hydrate (100) at a frequency within the range of from direct current to visible light at an energy density sufficient to dissociate the clathrate hydrate (100) and to envolve its constituent gas (402).
Patent CA-2274193-A1 (CA)
Title: Method for making integrated and composite optical devices utilizing prefabrication optical fibers and such devices
Inventor: BENHAM VICTOR
IPC: G02B6/30
Filed: 1999-06-10
Abstract: An integrated optical board (IOB) is made by embedding and securing optical fibers in a substrate, and then excising the ends of the substrate to serve as optical connectors. The remaining part of the substrate may be processed, for example by carving out part or parts of its top layer, to create optical components, such as planar waveguides, therein using the alignment markers for accurate positioning of the waveguide with respect to embedded fiber cores.
Patent CA-2274282-A1 (CA)
Title: Merge sorting apparatus with comparison nodes connected in tournament tree shape
Inventor: AZUMA SHINSUKE
IPC: G06F7/36
Filed: 1999-06-10
Abstract: A merge sorting apparatus comprises a comparison tournament circuit including comparison nodes, and a comparison control circuit for supplying to the corresponding comparison nodes validity flag information concerning the input data to each of the comparison nodes determined based on comparison results from the comparison nodes. The comparison control circuit comprises comparison result registers for retaining the comparison results, validity flag registers for retaining the validity flag information, and merge member registers for retaining information as to whether or not the input data to each of the input registers corresponding to respective pathways should be the object of comparison in the following data comparison processing. With this arrangement, contending readouts of record arrays from a memory can be reduced and the necessity to initialize each register is eliminated, thereby speeding merge sorting.
Patent CA-2277594-A1 (CA)
Inventor: LAUBLE PETER
IPC: C12N15/60
Filed: 1999-06-30
Abstract: (S)-Hydroxynitrile lyases which have an improved substrate acceptance and which are derived from the Hevea brasiliensis and Manihot esculenta (S)-hydroxynitrile lyases, wherein one or more bulky amino acid residues within the hydrophobic channel leading to the active center have been replaced with less bulky amino acid residues.
Patent CA-2279710-A1 (CA)
Title: Method and device for demodulating receive signal including pilot signal
Inventor: SUGITA NAOHIKO
IPC: H04J13/00
Filed: 1999-08-04
Abstract: A method for demodulating receive signal including pilot signal while estimating the fading distortion of data by detecting the fading distortion of unique word as pilot signal inserted into multiple sections of receive signal, the method having the steps of : (1) setting part of data as an extended unique word; (2)detecting the fading distortion of the unique word as pilot signal as a first fading distortion and detecting the fading distortion of the extended unique word as a second fading distortion; (3)estimating the fading distortion of data based on the first and second fading distortions; and (4)demodulating data based on the fading distortion of data.
Patent CA-2283955-A1 (CA)
Title: Audio visual output for a gaming device
Inventor: BROSSARD JEAN
IPC: A63F1/00
Filed: 1999-09-27
Abstract: A gaming device is provided in which a plurality of possible prizes includes both monetary prizes and/or an audio and/or motion picture output a performance of a celebrity. The output which is provided is one of a plurality of stored celebrity performances preferably selected at random.
Patent CA-2285057-A1 (CA)
Inventor: HOULT DAVID IAN
IPC: H03H7/40
Filed: 1998-04-09
Abstract: In an MRI system including a source of a high frequency oscillating current having a required characteristic impedance and a probe having an impedance different from said required characteristic impedance and an adjustment circuit for adjusting the impedance of the probe to the required characteristic impedance there is provided an automatic circuit for matching and tuning the impedances. The circuit includes a first adjustable element and a second adjustable element arranged such that adjustment of the first and second elements causes adjustment of both a resistive component and a reactive component of the impedance and such that, over at least a part of a range, adjustment of the first element while the second element remains constant generates a change in the impedance which is substantially orthogonal to a change in the impedance obtained by adjustment of the second element while the first element remains constant and such that adjustment of the first element to a first required adjustment position and adjustment of the second element to a second required adjustment position causes the impedance of the probe to be adjusted to said required characteristic impedance. A detection circuit provides two separate output values which are orthogonal to one another and which are indicative of a difference in the impedance of the probe from said required characteristic impedance. The output values are indicative of a difference of the first element from the first required adjustment position and a difference of the second element from the second required adjustment position. The values are used for controlling respectively the first and second elements.
Patent CA-2286309-A1 (CA)
Title: Fluid treatment system and process
Inventor: MAARSCHALKERWEERD JAN M
IPC: B08B9/02
Filed: 1994-03-04
Abstract: A fluid treatment system includes one or more radiation sources arranged in an irradiation zone within a treatment zone through which fluid to be treated passes and is irradiated. The irradiation zone has a closed cross-section to maintain the fluid within a predefined maximum distance from the radiation source. Preferably, the irradiation zone comprises a reduced cross-sectional area perpendicular to the direction of fluid flow and thus the fluid flew velocity is increased through the irradiation zone. This allows the fluid to enter the treatment zone at relatively low speed, traverse the irradiation zone at high speed and exit the treatment zone again at relatively low speed to minimize the loss of hydraulic head throughout the system. Fluid entering the treatment zone passes through an inlet transition region wherein the cross-sectional area is reduced prior to entering the irradiation zone and fluid eating the irradiation zone passes through an outlet transition region wherein the cross-sectional area is increased. Each transition region is designed to reduce hydraulic head losses as the fluid flow velocity is increased and decreased. In the irradiation zone, radiation sources are mounted on radiation modules which are arranged to provide improved accessibility for maintenance. The radiation modules may also be provided with cleaning assemblies which are operable to remove materials fouling the radiation sources in situ while the radiation sources are in the irradiation zone.
Patent CA-2287918-A1 (CA)
Title: A regioselective alkylation process for preparing substituted benzo¬b|thiophenes
Inventor: MCGILL JOHN MCNEILL III
IPC: C07D333/56
Filed: 1998-04-28
Abstract: The present invention provides processes for the regioselective alkylation of benzothiophenes.
Patent CA-2288159-A1 (CA)
Title: Roamer service auto-activation and deactivation in a home location register
Inventor: CAMERON DUNCAN
IPC: H04W8/18
Filed: 1998-03-27
Abstract: An automatic activation (306) of a roamer mobile station (14') is implemented in a visited network home location register (20). Responsive to a registration attempt (300) by the roamer mobile station (14') a default subscriber profile is defined (310), and a temporary subscriber (directory) number is assigned (308).      Arrangements are also made to insure subscriber payment (312) for any network provided wireless telephone services. Following activation (306) of the roamer mobile station (14'), the default subscriber profile is downloaded (314) for use in providing service. A timer (220) is also started and thereafter monitored for expiration (322). If the timer (220) expires before the occurrence of a wireless telephone service traffic event involving the roamer mobile station (14'), automatic deactivation of the roamer in the home location register (20) is implemented. In this regard, the default subscriber profile is deleted (334) and the temporary subscriber (directory) number is returned (332). The billing account for any network provided wireless telephone services is also closed (336).
Patent CA-2288253-A1 (CA)
Title: Composition tinctoriale contenant un colorant direct cationique et une pyrazolo-[1,5-a]-pyrimidine a titre de base d'oxydation, et procedes de teinture
Inventor: AUDOUSSET MARIE-PASCALE
IPC: A61K8/49
Filed: 1999-11-03
Abstract: L'invention a pour objet une composition pour la teinture d'oxydation des fibres kératiniques contenant au moins un colorant direct cationique et au moins une pyrazolo-¢1,5-a!-pyrimidine à titre de base d'oxydation; ainsi que le procédé de teinture d'oxydation mettant en oeuvre cette composition.
Patent CA-2288945-A1 (CA)
Title: Safety device for a microwave oven
Inventor: PARK SANG-JUN
IPC: H05B6/64
Filed: 1999-11-04
Abstract: A safety device for a microwave oven having simplified wiring arrangement between a plurality of sensitive switches and a main circuit board, including a door key movably mounted on a door of the microwave oven and having a key switch portion protruded toward the front side of the cabinet of the microwave oven;  a door latch fixed within the cabinet and having an insertion hole through which the key switch portion of the door key is inserted; a plurality of sensitive switches for turning on/off an electricity supply which is electrically connected thereto by being turned on/off in accordance with an insertion of the key switch portion; and a printed circuit board on which a plurality of sensitive switches are fixed, and in which wiring is formed to electrically connect the sensitive switches to a main circuit board.
Patent CA-2295053-A1 (CA)
Title: Biphasic polymerization process
Inventor: KEMNITZER JOHN E
IPC: C08G63/685
Filed: 1998-06-29
Abstract: Improvements are disclosed for biphasic polymerization processes in which an aqueous solution of a first monomer that is hydrolytically unstable below a pH of about six or above a pH of about eight is admixed with a water-immiscible organic solvent and there is added to the admixture a catalyst selected from tertiary amine, quaternary amine and phosphonium catalysts, an acid-forming co-monomer for the first monomer, an acid scavenger, after which the resulting polymer is recovered, wherein the improvement includes providing the aqueous solution at a pH between about six and about eight, and adding to the admixture the acid-forming co-monomer and the acid scavenger at relative rates effective to maintain the pH of the admixture between about six and about eight. The catalyst may be added in a molar ratio to the first monomer effective to provide a predetermined weight-average or number-average molecular weight for the resulting polymer.  Biphasic polymerizationprocesses for monomers that are not pH sensitive are also disclosed.
Patent CA-2295919-A1 (CA)
Title: Fiber optic pressure transducers and pressure sensing system incorporating same
Inventor: SCHROEDER ROBERT J
IPC: G01L1/24
Filed: 1998-07-02
Abstract: A fiber optic pressure transducer having enhanced resolution and dynamic range includes a fiber optic core having one or more gratings written onto it, a birefringence structure for enhancing the birefringence of the core, and a structure for converting isotropic pressure forces to anisotropic forces on the fiber core. Several different embodiments of prestressing structure are disclosed (both extrinsic and intrinsic). Several different embodiments of structure (both extrinsic and intrinsic) for converting isotropi c pressure to anisotropic pressure are also disclosed. The fiber optic pressure transducer according to the invention is advantageously used in conjunction with a light source and a spectral demodulation system in order to detect pressure ambient to the fiber optic pressure transducer based on the wavelength and shift of spectral peaks.
Patent CA-2296889-A1 (CA)
Title: Temperature indicator for a semi-fluid synthetic grease filled axle
Inventor: EHRLICH RODNEY P
IPC: F16C19/52
Filed: 2000-01-25
Abstract: A novel temperature probe provides a visual indicator to an operator of when an assembly, such as a vehicle axle, having with a semi-fluid synthetic grease for lubricating the bearings therein has reached an unsafe temperature during operation. In one embodiment, the temperature probe is provided in a specially drilled bore through one of the components. In another embodiment, the temperature probe is provided in a bore drilled into a fastener member which is normally used in the assembly. The temperature probe includes an indicator pin which is mounted in a housing. When the components reach an unsafe temperature during operation, the indicator pin pops outwardly from the housing to alert a user that an unsafe temperature has been reached.
Patent CA-2297348-A1 (CA)
Title: Washable marking composition
Inventor: FISTNER DAVID C SR
IPC: C09D13/00
Filed: 2000-01-27
Abstract: The present invention provides a washable marking composition, e.g., a crayon composition, comprising an alkoxylated fatty acid, a fatty alcohol, and a pigment. The marking composition preferably further includes a filler. An example of a preferred alkoxylated fatty acid is ethoxylated stearic acid and an example of a preferred fatty alcohol is stearyl alcohol. The marks made by the composition can be easily washed off surfaces such as fabrics, wallpapers, skin, and painted surfaces. The present invention further provides a method of producing a washable crayon comprising: (a) providing an alkoxylated fatty acid, a fatty alcohol, and a pigment; (b) melt-blending said alkoxylated fatty acid, fatty alcohol, and pigment, to provide a melt-blend; and (c) shaping the melt-blend in the form of a crayon.
Patent CA-2301613-A1 (CA)
Inventor: GLENN THOMAS P
IPC: H01L31/0203
Filed: 1998-09-08
Abstract: A mounting for a flip chip integrated circuit device having a light sensitive cell is disclosed. The mounting includes an insulating substrate having an aperture between its first and second surfaces. A flip chip integrated circuit device is placed on the first surface of the substrate. A light sensitive cell of the integrated circuit device faces the aperture. Solder bumps on the integrated circuit are electrically connected to corresponding conductive metallizations on the first surface of the substrate. A transparent aperture cover is affixed to the second surface of the substrate with an adhesive bead. The aperture cover extends over the aperture, allowing light to be transmitted through the aperture cover to the light sensitive cell. The side surfaces of the aperture cover include features for locking the adhesive bead to the aperture cover. The numerous locking features disclosed include protrusions and indentations that engage the adhesive bead and thereby enhance the connection of the aperture cover to the substrate.
Patent CA-2308161-A1 (CA)
Title: Ecomcard
IPC: G06K19/06
Filed: 2000-05-11
Abstract: A method and apparatus for the transmission of monetary value and payment of debts, comprised of a card upon which has imprinted upon its front the name of the issuer and a multiple digit number and which stores the quantum of money with which the bearer of the card has pre-purchased from the issuer on an electronic strip on the obverse side and which is debited when the card is either run through a machine "reader" or when the multiple-digit number is given to a creditor of the bearer orally or in writing.      The card may be any size and thickness and the multiple-digit number may be any length, but the utility of the apparatus will be greatest when it resembles the dimensions of a credit card, namely 2" height by 3" width by 1/8" thickness.
Patent CA-2308336-A1 (CA)
Inventor: VAN KRUCHTEN EUGENE MARIE GODF
IPC: C07C31/20
Filed: 1998-10-29
Abstract: A process for the preparation of alkylene glycols by reacting an alkylene oxide with water in the presence of a catalytic composition comprising a marcocyclic chelating compound complexed with an ionic compound the anion of which is catalytically effective under the reaction conditions. Preferably, the macrocycle is a crown ether or a cryptate and the anion is selected from the group of halogenides, carboxylates having from 1-20 carbon atoms, hydrogen carbonate, hydrogen sulphite, hydrogen phosphate and metalates.
Patent CA-2308404-A1 (CA)
Inventor: ZHANG MEIJIE
IPC: H01M6/00
Filed: 2000-05-10
Abstract: The loss in delivered capacity (capacity fade) after cycling non-aqueous rechargeable lithium manganese oxide batteries at elevated temperatures can be greatly reduced by depositing a small amount of certain foreign metal species on the surface of spinel in the cathode. In particular the foreign metal species are from compounds having either bismuth, lead, lanthanum, barium, zirconium, yttrium, strontium, zinc or magnesium. The foreign metal species are introduced to the surface of spinel by moderately heating either an aqueous treated mixture or a dry mixture of ready-made spinel and the foreign metal compound.
Patent CA-2309233-A1 (CA)
Inventor: KROFCHAK DAVID
IPC: C04B7/24
Filed: 2000-05-24
Abstract: A method of making cement from tailings or rock fines containing silicate or siliceous compounds includes grinding the tailings or rock fines to a size in the range of from about -250 to about 425 mesh to produce ground pozzolan. The ground pozzolan is mixed with Type 1 normal Portland cement or Type 3 high early strength Portland cement in a ratio of at least about 0.5:1 by weight to produce a blended cement.
Patent CA-2310630-A1 (CA)
Inventor: BURK ROBERT M
IPC: A61K31/557
Filed: 1998-11-17
Abstract: L'invention concerne l'utilisation de dérivés de prostaglandines de type F en tant qu'hypotenseurs oculaires. Les composés utilisés selon l'invention sont représentés par la formule (I), dans laquelle: les liaisons ondulées signalent soit la configuration alpha (.alpha.) soit la configuration bêta (.beta.); les segments hachurés signalent la configuration .alpha.; le triangle plein signale la configuration .beta.; les liaisons pointillées représentent une double liaison ou une simple liaison; R représente un radical hétéroaryle substitué ayant au moins deux substituants disponibles choisis dans le groupe composé par alkyle C¿1-6?, halogène, trifluorométhyle, COR?1¿, COCF¿3?, SO¿2?NR?1¿, NO¿2? et CN ou au moins un groupe cyano; R?1¿ représente hydrogène ou un radical alkyle inférieur ayant jusqu'à six atomes de carbone, X est choisi dans le groupe composé par -OR?1¿ et -N(R?1¿)¿2?; Y = O ou représente 2 radicaux hydrogène et leurs esters alkyliques inférieurs 9, 11 ou 15; à condition toutefois que lorsque ledit radical hétéroaryle représente un radical dichlorothiényle, le composé ne soit pas un acide 1-carboxylique ou son amide. Certains composés représentés par la formule (I) sont nouveaux et comprennent un autre aspect de la présent invention.
Patent CA-2313917-A1 (CA)
Title: A lift axle suspension with axle reservoir
Inventor: RICHARDSON GREGORY A
IPC: B60G17/052
Filed: 2000-07-14
Abstract: A trailing arm suspension, alone or in combination with a vehicle having a vehicle frame supported by an axle with ground engaging wheels. The trailing arm suspension comprises a pair of spaced trailing arm assemblies, each of which includes a trailing arm pivotally mounted to a the vehicle frame and a spring operably coupling the trailing arm to the frame to resist the pivotal movement of the trailing arm. A pneumatic lift mechanism is provided to selectively raise the trailing arm relative to the frame. The axle has at least a portion of which that is hollow and defines a pressurized air reservoir, which is coupled to the spring and/or the pneumatic lift mechanism to provided pressurized air for altering the resistance of the spring and/or actuating the pneumatic lift mechanism to selective lift the trailing arm.
Patent CA-2314865-A1 (CA)
Inventor: HOKASE MASANOBU
IPC: A61K38/46
Filed: 1998-12-18
Abstract: The present invention provides a novel method for preventing and treating mastitis in mammals and a composition for use in the method to prevent reduction in milk production caused by development of mastitis among livestock such as dairy cows, the invention being based on the finding that mastitis in mammals can be prevented and treated by administering phytase to the mammals.
Patent CA-2314991-A1 (CA)
Inventor: LEIDL PETER
IPC: A23L33/00
Filed: 1998-12-15
Abstract: A food additive useful for lowering serum cholesterol in humans contains a sterol or stanol ester of a fatty acid or a dicarboxylic acid ester of a sterol or stanol made by reacting a sterol, stanol and a carboxylic acid in the presence of an effective amount of a catalyst selected from the group consisting of calcium oxide, calcium hydroxide, a calcium salt of a carboxylic acid, magnesium hydroxide and combinations thereof described herein.