baber/WOPTO huggingface dataset:
Patent CA-2233567-A1 (CA)
Title: Atherectomy, angioplasty and stent method and apparatus
Inventor: ZACCA NADIM M
IPC: A61B17/00
Filed: 1996-10-18
Abstract: An atherectomy device for treating obstructions in vessels or small openings in the body, comprising a rotatable ablator tip (16) which is guided to the obstruction in a reduced diameter configuration, expanded and rotated to remove the obstruction, and contracted to remove the device from the body. The atherectomy device may be combined with a balloon (240) angioplasty device employing either a fixed or variable diameter rotatable abrasive burr and an angioplasty balloon (240) disposed on the distal end of the catheter (14) proximal to the atherectomy device. The atherectomy device may also be combined with a stent (230) implantation device employing either a fixed or variable diameter rotatable abrasive burr and a stent (230) with balloon catheter disposed on the distal end of its catheter (14) proximal to the atherectomy device.
Patent CA-2234051-A1 (CA)
Title: Novel isoquinoline derivatives
Inventor: ISHIGURO SUSUMU
IPC: A61P25/02
Filed: 1997-08-07
Abstract: The present invention aims to provide new compounds having inhibitory activity of apoptotic neuronal cell death, and new isoquinoline derivatives and pharmaceutically acceptable acid addition salts represented by the following general formula (I) are obtained.   (see formula I) wherein Ar shows an aromatic ring which may be substituted, and n shows 0, 1 or 2. The compounds of the present invention have inhibitory activity of neuronal cell death, and they are useful for agents of prevention and treatment of neuronal neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, Huntington's chorea and amyotrophic lateral sclerosis, cerebral ischemic injury such as stroke, and peripheral neuropathy in diabetes mellitus.
Patent CA-2235591-A1 (CA)
Title: Serial multi-gb/s data receiver
Inventor: PIKE RODNEY DAVID
IPC: H03K3/28
Filed: 1996-05-01
Abstract: A data pulse receiver for detecting and amplifying serial data pulses received at gigabit-per-second rates over a transmission medium through which the signal levels have been substantially attenuated. The receiver, in a preferred embodiment, has grounded base differential amplifiers to give impedance matching, signal amplification and wide frequency bandwidth. A regenerative flip-flop with programmable tail current provides hysteresis in order to suppress unwanted noise signals. The flip-flop also returns the data pulses to NRZ format. The receiver may also include means for automatic adjustment of the hysteresis level.
Patent CA-2241633-A1 (CA)
Title: Vitronectin receptor antagonists
Inventor: KU THOMAS WEN-FU
IPC: A61P5/36
Filed: 1996-12-20
Abstract: Compounds of formulae (I-V) are disclosed which are vitronectin receptor antagonists and are useful in the treatment of osteoporosis.
Patent CA-2242516-A1 (CA)
Inventor: MARTIN PAUL ANTONY
IPC: G06F9/44
Filed: 1997-01-15
Abstract: A distributed processing system and method for accessing data records wherein a table identifies the location of all data records on all host computers, and the location of the respective host computers on which each said data record was created.
Patent CA-2243205-A1 (CA)
Inventor: OTTO ALEXANDER
IPC: H01L39/24
Filed: 1997-01-16
Abstract: This invention pertains to a process for producing ceramic superconductors, and to the superconductors produced by this process. The process includes the steps of: fabricating a composite precursor comprising a plurality of substantially planar filaments (401), with each filament comprising an alloy precursor surrounded by a malleable matrix; thermomecanically process the composite precursor such that interfacial layers of the malleable matrix become textured while the filaments remain in a precursor state (402, 403);  and then reaction texturing the alloy precursor such that this precursor is textured and formed into a superconducting ceramic material within the malleable matrix via quasiepitaxial growth fostered by the textured interfacial layers and substantially without deformation of the superconducting grams (404, 405).
Patent CA-2244598-A1 (CA)
Title: Method of and means for upgrading hydrocarbons containing metals and asphaltenes
Inventor: BRONICKI LUCIEN Y
IPC: C10G55/04
Filed: 1998-08-07
Abstract: A hydrocarbon source feed is upgraded using a solvent deasphalting (SDA) unit employing a solvent having a critical temperature T c by initially separating from a first hydrocarbon input stream fractions with an atmospheric equivalent boiling temperature less than about T f ° F. for producing a stream of T f- fractions and a residue stream (T f+ stream), where T f is greater than about T c - 50 ° F. In the SDA unit, a second hydrocarbon input stream which includes the residue stream is deasphalted for producing a first product stream of substantially solvent-free asphaltenes, and a second product stream containing substantially solvent-free deasphalted oil (DAO). The source feed may be included in either the first or second input streams. The DAO in the second product stream is thermally cracked for producing an output stream that includes thermally cracked fractions and by-product asphaltenes produced by thermally cracking the DAO. Finally, at least some the said thermally cracked fractions are included in the first input stream.
Patent CA-2245524-A1 (CA)
Title: Antidiabetic agents
Inventor: MOLLER DAVID E
IPC: C07D307/79
Filed: 1997-01-31
Abstract: The instant invention is concerned with acetylphenols which are useful as antiobesity and antidiabetic compounds. Compositions and methods for the use of the compounds in the treatment of diabetes and obesity and for lowering or modulating triglyceride levels and cholesterol levels or raising high density lipoprotein levels or for increasing gut motility or for treating atherosclerosis are also disclosed.
Patent CA-2248165-A1 (CA)
Title: Cinnamylidene camphor derivatives and their use as uv-a protecting agents
Inventor: WESTENFELDER HORST
IPC: C07C49/683
Filed: 1997-03-06
Abstract: The invention relates to cinnamylidene camphor derivatives of the formula (1) in which the diene system is in the configuration Z,Z; Z,E; E,Z or E, E and R1 is H, CH3, R2 is C1-C6 alkyl, C1-C6 alkoxy, halogen, NR3H, NR32, R3 is C1-C4 alkyl, R4 is H, C1-C6 alkyl, and n is 1, 2, and their use as UV-A protecting agents, especially in cosmetical and pharmaceutical formulations.
Patent CA-2250832-A1 (CA)
Title: Enzyme destinee a teinter des fibres keratiniques
Inventor: SORENSEN NIELS HENRIK
IPC: A61K8/00
Filed: 1997-04-03
Abstract: Composition de teinture qui comprend une enzyme d'oxydation dérivée de l'espèce Pyricularia, procédé de teinture des cheveux et utilisation d'une laccase de Pyricularia pour teindre des fibres kératiniques.
Patent CA-2250834-A1 (CA)
Title: Lignees de cellules a bouton embryonnaire cultive, derivees d'embryons d'ongules
Inventor: STICE STEVEN L
IPC: C12N5/10
Filed: 1997-03-24
Abstract: L'invention concerne des cellules à bouton embryonnaire cultivé et des lignées de cellules, dérivées d'ongulés - en particulier de truies et de vaches -, et des procédés pour les préparer. Ces boutons embryonnaires cultivés possèdent une morphologie similaire et expriment des marqueurs de cellules de manière identique ou sensiblement similaire aux bouton embryonnaires d'embryons en développement non différenciés, pendant des périodes de culture prolongées. Des ADN hétérologues peuvent être introduits dans lesdites cellules à bouton embryonnaire cultivé et dans lesdites lignées cellulaires pour créer des cellules transgéniques utilisées pour produire des embryons, des foetus ou des descendants transgéniques, par exemple par des techniques de transfert nucléaire.
Patent CA-2251238-A1 (CA)
Title: Traction enhancing articles of manufacture
Inventor: COOK MICHAEL H
IPC: A43B13/26
Filed: 1998-10-21
Abstract: An improved traction enhancing article is provided which is applicable to many different items such as shoes, skateboards, snowboards, and the like. The traction enhancing article has a plurality of regularly spaced cleats embedded in a flexible base which, in at least one embodiment, has an adhesive backing allowing it to be removably secured to a variety of different items. The cleats are preferably formed of aluminum and have a hexagonal base which tapers to a rounded top. Both sides of the cleat surface are roughened to enhance traction and to ensure the cleat remains embedded in the base even under extreme stress conditions.
Patent CA-2251394-A1 (CA)
Inventor: SUN JUNG HUI
IPC: C07D403/14
Filed: 1997-04-17
Abstract: The present application describes N-(amidinophenyl) cyclourea analogs of formula (I) which are useful as inhibitors of factor Xa.
Patent CA-2252584-A1 (CA)
Title: Treatment of carcinomas using squalamine in combination with other anti-cancer agents
Inventor: WILLIAMS JON
IPC: A61K33/243
Filed: 1997-04-25
Abstract: A method for treating a tumor includes a first treatment procedure using a conventional cancer treatment technique, and a second treatment procedure which includes administering an effective amount of squalamine. The first treatment procedure may be a treatment with one or more conventional cytotoxic chemical compounds. As examples, the cytotoxic chemical compound may be a nitrosourea (such as BCNU), cyclophosphamide, adriamycin, 5-fluorouracil, paclitaxel and its derivatives, cisplatin or other platinum containing cancer treating agents. The cytotoxic chemical compound and the squalamine may be administered by any suitable route. The first treatment procedure may take place prior to the second treatment procedure, after the second treatment procedure, or the two treatment procedures may take place simultaneously. In one example, the first treatment procedure (e.g., a one time intravenous dosage of BCNU) is completed before the second treatment procedure with squalamine begins. As an alternative, the first treatment procedure may be a conventional radiation treatment regimen.
Patent CA-2253851-A1 (CA)
Title: Tsetse thrombin inhibitor
Inventor: CAPPELLO MICHAEL
IPC: A61P7/02
Filed: 1997-05-09
Abstract: A potent and specific inhibitor of the human coagulation protease thrombin was isolated and purified from salivary gland extracts of the tsetse fly, Glossina morsitans morsitans, an important vector of African trypanosomiasis. The inhibitor is a low molecular weight polypeptide exhibiting a molecular weight of 3530 Daltons (as determined by laser desorption mass spectrometry). Amino terminal sequencing of the purified protein reveals no homology to any previously identified serine protease inhibitor or naturally occurring anticoagulant. In addition, it is also a potent inhibitor of thrombin-induced platelet aggregation. The polypeptide is useful in pharmaceutical and vaccine compositions.
Patent CA-2254809-A1 (CA)
Inventor: WENSLEY CHARLES GLEN
IPC: H01M50/489
Filed: 1998-12-01
Abstract: A battery separator for a gel electrolyte battery includes a microporous membrane; and an adherent coating thereon, or a gel-forming coating thereon, the gel-forming coating including a gel-forming polymer and a plasticizer.
Patent CA-2255893-A1 (CA)
Title: Prenyl transferase inhibitors
Inventor: KIM SUN H
IPC: A61K31/33
Filed: 1997-05-29
Abstract: A family of compounds capable of inhibiting the activity of prenyl transferases. The compounds are covered by either of two formulas (I, II). Each of the R groups is defined in the disclosure.
Patent CA-2256303-A1 (CA)
Inventor: DOHERTY NIALL STEPHEN
IPC: A61K31/445
Filed: 1998-12-17
Abstract: The present invention relates to the use of matrix metalloproteinase inhibitors,preferably those which display specihcity for matrix metalloproteinases-2 or 9, in the treatment or prevention of ocular angiogenesis.
Patent CA-2257184-A1 (CA)
Inventor: AMICHE FREDERIC
IPC: C01B33/193
Filed: 1997-06-04
Abstract: Silice de précipitation abrasive susceptible d'être utilisée dans les compositions dentrifices, silice présentant: une surface spécifique BET de l'ordre de 15 à 300 m2/g, une prise d'huile DOP de l'ordre de 40 à 160 ml/g; un diamètre médian de particule d'au moins 10 .mu.m, généralement de l'ordre de 12 à 30 .mu.m; un facteur de cohésion de ses particules d'au moins 85 % environ pour un diamètre médian de particule de l'ordre de 12 .mu.m à 20 .mu.m. Procédé de préparation de silice par réaction d'un silicate de métal alcalin avec un agent acidifiant, pour former une bouillie de silice, séparation et séchage éventuel de la suspension de silice récupérée, l'opération de formation de bouillie étant réalisée selon les étapes suivantes: une première étape consistant à mettre en oeuvre un pied de cuve initial constitué d'eau, d'un sel électrolyte du groupe des métaux alcalins ou alcalino-terreux et éventuellement d'un agent acidobasique; une deuxième étape consistant à introduire le silicate et l'agent acidifiant, le pH du milieu réactionnel restant constant de 4 à 7 et particulièrement de 5,8 à 6,7; et une troisième étape éventuelle, consistant à acidifier le milieu réactionnel jusqu'à obtenir une bouillie de silice de pH inférieur à 6 et particulièrement de l'ordre de 4. Utilisation de ladite silice dans les compositions dentifrices et compositions dentifrices comprenant ladite silice.
Patent CA-2258178-A1 (CA)
Inventor: SEVERN JOHN KENNETH
IPC: H01L31/0232
Filed: 1997-08-01
Abstract: Une microplaquette de photodétecteur (10) à entrée postérieure de lumière est fixée face en dessous par une soudure (17a, 17b) à la face antérieure d'un support de céramique (20) pourvu de deux traversées conductrices (21a, 21b). Une masse de soudure en forme de cadre (17b) scelle la microplaquette au support afin de constituer une enveloppe hermétique protégeant les surfaces sensibles du semi-conducteur de la microplaquette du photodétecteur là où des champs électriques sont susceptible d'être présents au voisinage de la jonction p-n ou de la jonction métal - semi-conducteur.
Patent CA-2260092-A1 (CA)
Title: Process for the preparation of acylated hexaazaisowurtzitane derivatives
Inventor: KODAMA TAMOTSU
IPC: C07D487/18
Filed: 1997-10-14
Abstract: A process for preparing acylated hexaazaisowurtzitane derivatives represented by general formula (1): WAnH(6-n), wherein n is 4 or 6; As are each independently C1-C10 acyl; H is hydrogen; and W is a hexavalent hexaazaisowurtzitane residue of formula (2), by preparing a composition comprising a mixed solvent comprising a first solvent exhibiting high solvency for one of the derivatives and a second solvent exhibiting low solvency for the derivative and the derivative dissolved in the mixed solvent, and removing the first solvent from the composition to crystallize the derivative. This process makes it possible to prepare the above derivatives at a high purity, in a high yield and at a low cost, the derivatives being useful as precursors for hexanitrohexaazaisowurtzitane which is an additive for high explosives.
Patent CA-2260411-A1 (CA)
Title: Two stage motorized actuator
Inventor: PEARSON JAMES E
IPC: F16H19/00
Filed: 1999-02-10
Abstract: A two stage motorized servo-actuator having a worm driven high reduction gear train providing a rotary output. The motor shaft has a worm and co-axially therewith, a beveled pinion. The motor worm is continuously engaged with a first stage gear. The first stage gear has an input sector gear disposed co-axially and rotatable therewith. The input sector gear intermittently engages an output gear. The output gear has a beveled output sector gear disposed co-axially and rotatably therewith. Upon disengagement of the input sector gear with the output gear, the beveled pinion engages the beveled output sector gear to drive the output gear directly. Once the input sector gear is disengaged from the output gear, a return spring on the output gear can reverse drive the motor through the beveled pinion to return the output gear to a desired position in the event of motor failure in operation.
Patent CA-2260714-A1 (CA)
Title: Wellbore fluid recovery systems & methods
Inventor: REID MICHAEL KIM
IPC: E21B21/06
Filed: 1999-02-04
Abstract: A method for recovering a component from a wellbore fluid mixture has been invented that includes feeding a wellbore fluid mixture to a decanting centrifuge, the wellbore fluid containing at least one liquid component and undesirable solids; separating undesirable solids from the wellbore fluid mixture with the decanting centrifuge, producing an intermediate fluid containing the at least one liquid component and a reduced amount of the undesirable solids; and feeding the intermediate fluid to a secondary centrifuge, producing a final fluid containing the at least one liquid component and a further reduced amount of tile undesirable solids in certain aspects at least some of the undesirable solids are barite pieces, which in one aspect have a lar~est dimension of no more than 192 microns, and in one aspect wherein at least 50% or 99% of the barite pieces by weight are removed. Such a method is useful, in certain aspects, to separate undesirable solids have a largest dimension of at least 75 microns. In one aspect the method is useful to separate brine from a wellbore fluid.
Patent CA-2261110-A1 (CA)
Title: Pipe cleaning apparatus for oil or gas pipelines
Inventor: GEPPERT CHRISTIAN
IPC: B08B9/057
Filed: 1997-07-10
Abstract: Pipe cleaning apparatuses for oil and gas pipelines are disclosed, in which a shield with a cleaning device is moved forward through a stream of liquid in the pipeline. The shield forms one or several passages for a passing stream of liquid within the pipeline in order to build up a desired pressure and is provided on its rear side with braking means which prevent the speed of advancement from rising to an undesirable extend in that at least one clamping element momentarily adheres to the pipe wall and moves relative to the braking means. This movement is kinematically transmitted to a hydraulic displacer which generates a secondary stream of liquid which is braked through at least one throttle and thus determines the speed between shield and pipe wall.
Patent CA-2262381-A1 (CA)
Title: Transferring messages in networks made up of subnetworks with different namespaces
Inventor: KILLIAN THOMAS JOSEPH
IPC: H04L12/66
Filed: 1997-08-07
Abstract: Techniques employed in packet networks for transferring a packet across subnetworks with different namespaces. When a packet enters a given subnetwork and has a destination in a subnetwork with a different namespace, the given subnetwork encapsulates the packet by adding a header which specifies a decapsulator in the namespace. When the packet arrives at the decapsulator, the decapsulator strips the header and provides the packet to a subnetwork with a different namespace. A particular use of the technique is in a network used for broad-band interactive service. The network has two subnetworks. The first subnetwork is a TV channel which functions as a high-bandwidth forward channel and the second subnetwork is a packet network accessible via a public modem pool which functions as a lower-bandwidth return channel. The encapsulator establishes a connection with the public modem pool and receives an address in the second subnetwork which is temporarily associated with the connection. When the encapsulator receives a packet which is produced in response to a packet received from the TV channel and has a destination address in the subnetwork of the TV channel, the encapsulator places a header on it which contains the temporary address and the address of the decapsulator. When the packet arrives at the decapsulator, the decapsulator removes the header and provides the packet to the second subnetwork.
Patent CA-2262512-A1 (CA)
Inventor: LAFFONT JEROME
IPC: A23L3/36
Filed: 1997-09-04
Abstract: L'invention concerne un procédé de préparation d'un plat congelé. Ce procédé consiste à placer les composants du plat dans des moules, à soumettre ces moules à une étape de congélation, puis à démouler le plat avant de l'emballer.
Patent CA-2268183-A1 (CA)
Title: Non-aqueous solvent-free lamellar liquid crystalline lubricants
Inventor: GUNSEL SELDA
IPC: C10M141/10
Filed: 1997-09-25
Abstract: Non-aqueous lamellar liquid crystalline lubricant compositions containing an organic phosphoric or sulphoric acid component or a salt thereof and an organic amine component which are substantially free of non-aqueous solvent. Lubricating compositions comprising a lubricating oil and a friction modifier formed of said lamellar liquid crystalline material.
Patent CA-2268212-A1 (CA)
Title: Childproof piezoelectric lighter with sliding mechanism
Inventor: SHER TAK CHI
IPC: F23Q2/16
Filed: 1999-04-07
Abstract: A gas lighter uses the depression of an actuation lever to trigger a piezoelectric generator to generate a current and raise a gas lever to allow the flow of gas through a nozzle. The current is conducted to the nozzle to ignite the gas. A slider, movable towards and away from the body of the lighter is engaged with the actuating lever to not allow the actuating lever to be depressed when the slider is away from the body of the lighter. The engagement is by means of a pair of resilient fingers of the slider and pair of sliding surfaces on the actuating lever.
Patent CA-2268527-A1 (CA)
Inventor: MOSS MICHAEL ALAN JOHN
IPC: C11D1/52
Filed: 1997-10-02
Abstract: The present invention relates to detergent compositions or components thereof containing a cellulytic enzyme and one or more cationic surfactants of the formula: R1R2R3R4N+ X- in which R1 is a hydroxyalkyl group having no greater than 6 carbon atoms; each of R2 and R3 is independently selected from C1-4 alkyl or alkenyl; R4 is a C5-9 alkyl or alkenyl; and X- is a counterion. The cationic surfactant may comprise a mixture of surfactants where at least 10 %  by weight of the mixture has R4 of C9 or below, or where R4 is a Cn alkyl group of from more than 8 to 11, and a C(n-2) alkyl group, respectively.
Patent CA-2271538-A1 (CA)
Title: Grease compositions
Inventor: WIGGINS GARY W
IPC: C10M169/06
Filed: 1999-05-12
Abstract: Improved grease compositions comprise a major amount of an oil based metal soap thickened base grease selected from the group consisting of simple metal soap thickened base grease, complex grease and failed complex grease, at least one sulfur and phosphorus containing composition, an overbased metal salt of an organic acid, a hydrocarbyl phosphite, and an aliphatic group substituted carboxylic acid or anhydride thereof, wherein the aliphatic group contains at least about 12 carbon atoms in amounts sufficient to increase the dropping point of the base grease, as measured by ASTM Procedure D-2265 by at least 15°C, the phosphorus and sulfur compound being described in detail herein.
Patent CA-2271972-A1 (CA)
Title: Swabbable luer-coned valve
Inventor: COTE ANDREW L SR
IPC: A61M5/168
Filed: 1997-11-13
Abstract: A normally closed valve that may be opened upon insertion of a nozzle permits two-way flow when opened by a luer-taper nozzle. The valve also is able to resist large back pressure. The valve includes a subtantially rigid housing that defines a passageway having an inlet section and an outlet section. The housing has an exterior inlet face to which the inlet section opens. The inlet section preferably has tapered and expanding zones. The tapered zone is adjacent to the exterior inlet face and is shaped to receive the nozzle. The expanding zone is adjacent to the tapered zone and has a larger inner diameter than the tapered zone's inner diameter. The exterior of the inlet section of the housing may have threads to accept luer-lock threads that may surround the nozzle.