baber/WOPTO huggingface dataset:
Patent CA-2246799-A1 (CA)
Title: Transmultiplexer
Inventor: MACDONALD ROBERT I
IPC: H04J14/02
Filed: 1998-09-08
Abstract: A transmultiplexing device is provided having a first optical circulator and a multiplexer optically coupled to a feeder waveguide for feeding and demultiplexing a multiplexed signal into the a switching network and for multiplexing and extracting a demultiplexed signal from the switching network. A second optical circulator and a multiplexer optically coupled to a distributor waveguide are provided for feeding and demultiplexing a multiplexed signal into the a switching network and for multiplexing and extracting a demultiplexed signal from the switching network. The single pair of WDM  devices act simultaneously as multiplexers and demultiplexers.
Patent CA-2247495-A1 (CA)
Inventor: BROSS STEPHEN V
IPC: E21B43/17
Filed: 1998-09-21
Abstract: A method for increasing the production of methane from a subterranean coal formation by chemically stimulating the formation of cleats in the formation to increase the rate of methane production from the formation by injecting an aqueous oxidant solution into the formation to stimulate the formation of cleats in the formation; and thereafter producing methane from the formation at an increased rate. Suitable oxidants include chlorine dioxide, metallic salts of perchlorate, chlorate, persulfate, perborate, percarbonate, permanganate, nitrate and combinations thereof.
Patent CA-2247548-A1 (CA)
Title: A high-speed asynchronous decompression circuit for variable-length-coded data
Inventor: WOLFE ANDREW
IPC: H04N19/61
Filed: 1998-09-15
Abstract: There is provided an architecture and implementation of a high-speed decompression engine for variable-length-coded data, such as Huffman-coded data. The engine is particularly targeted to processors where embedded programs are stored in compressed form and decompressed at runtime during instruction cache refill. The decompression engine uses a unique asynchronous variable decompression rate architecture to process variable-length-coded instructions. The resulting circuit is significantly smaller than comparable synchronous decoders, yet has a higher throughput rate than almost all existing designs.
Patent CA-2248242-A1 (CA)
Inventor: ARMAND MICHEL
IPC: H01M8/00
Filed: 1997-12-30
Abstract: L'invention a pour objet des composés ioniques dérivés du malononitrile dans lesquels la charge anionique est délocalisée. Un composé ionique de l'invention comprend une partie anionique associée à au moins une partie cationique Mm+ en nombre suffisant pour assurer la neutralité électronique de l'ensemble. Il est caractérisé en ce que M est un hydroxonium, un nitrosonium NO+, un ammonium -NH4+, un cation métallique ayant la valence m, un cation organique ayant la valence m ou un cation organométallique ayant la valence m, et que la partie anionique répond à l'une des formules RD-Y-C(CN)2- ou Z-C(CN)2- dans lesquelles Z est un groupe électroattracteur, RD est un radical organique et Y est un carbonyle, un thiocarbonyle, un sulfonyle, un sulfinyle ou un phosphonyle. Les composés sont utiles notamment pour les matériaux à  conduction ionique, les matériaux à conduction électronique, les colorants et la catalyse de diverses réactions chimiques.
Patent CA-2248260-A1 (CA)
Title: Vascular catheter-based system for heating tissue
Inventor: FARLEY BRIAN E
IPC: A61B18/04
Filed: 1997-03-04
Abstract: A catheter (10) delivers at least one electrode (12) within a vein for a minimally invasive procedure using RF energy. The catheter (10) is introduced into a patient and positioned within the section of the vein to be treated. The electrode (12) radiates high frequency energy towards the vein, and the surrounding venous tissue becomes heated and begins to shrink. A bowable member (32) can be controlled to limit the amount of shrinkage of the vein to the diameter defined by the member (32). The electrode (12) remains active until there has been sufficient shrinkage of the vein. The extent of shrinkage of the vein may be detected by fluoroscopy. After treating one section of the vein, the catheter (10) and the electrode (12) can be repositioned intraluminally within the vein to treat different sections of the vein until all desired venous sections and valves are repaired and rendered functionally competent.
Patent CA-2249449-A1 (CA)
Title: Mycoplasma arthritidis superantigen
Inventor: COLE BARRY C
IPC: C07K14/30
Filed: 1997-03-21
Abstract: The gene encoding the superantigen Mycoplasma arthritidis T-cell mitogen (MAM) was molecularly cloned. The mam gene was modified by site-directed mutagenesis to change UGA codons, which in mycoplasmas are read as tryptophan codons instead of universal stop codons, to UGG codons such that the gene could be expressed in standard expression systems. Recombinant MAM, including extra amino acid residues at the - and C-termini, were expressed and discovered to be biologically active. Certain amino acid substitutions in active regions of the protein also yield biologically active MAM proteins. A method of diagnosing rheumatoid arthritis using recombinant MAM protein in an ELISA assay is disclosed.
Patent CA-2251478-A1 (CA)
Inventor: VAN DEN BERG KAREL
IPC: A01K1/12
Filed: 1998-02-11
Abstract: In a method of milking animals, in particular goats, a number of animals is arranged side by side in a milking parlour (1), whereafter a robot arm construction (12) is moved along the rear of the animals for the purpose of seizing consecutively teat cups (11) provided behind each of the animals arranged in the milking parlour (1) and connecting same to the teats of the animals. The position of the teats is determined by means of a sensor which is active between the hind legs of the animals, while also the teat cups (11) are connected to the teats between the hind legs of the animals.
Patent CA-2252671-A1 (CA)
Inventor: LYCKE HANS
IPC: H01M2/10
Filed: 1997-02-21
Abstract: The invention refers to a thermoelectric generator unit comprising a plurality of thermoelectric elements (1) of alternately p and n character and electrically series connected by means of metal connector members (2), the elements having essentially cylindrical shape. For securing a drastically improved reliability in the interfaces between the connector members and the respective thermoelectric elements the invention now suggests that said connector members are formed as plates (2), on one side of which are made two substantially semi-cylindrical and parallel seats (3) for thermoelectric elements (1), which connector members are adapted to be placed with said seats (3) facing each other to either side of a row of elements (1) with opposed plates mutually offset one seat width longitudinally of the row so as to form a continuous winding serial path for the generated current, the plates (2) on one side of the element row being adapted to face a heat source while the plates on the opposite side are facing a heat sink.
Patent CA-2252935-A1 (CA)
Title: Straw chopper
Inventor: HIRSCH WALTER
IPC: A01F12/40
Filed: 1998-12-01
Abstract: A straw chopper arrangement for an agricultural combine wherein the chopper is provided two vertically arranged rotors. The rotors are provided with a number of circumferentially spaced radially extending impeller blades. The outer ends of the impeller blades are provided with pivotally mounted flails. The flails are vertically spaced from one another. The straw chopper arrangement is also provided with a chopper housing for receiving the rotors. The housing having at least two walls that are provided with inwardly extending shear bars which are located in the vertical space defined by vertically adjacent flails.
Patent CA-2256190-A1 (CA)
Inventor: YAGI TOMOTAKA
IPC: G11B7/24073
Filed: 1998-12-15
Abstract: A recordable optical disc stores one or more video objects. A video stream, a first audio stream, and a second audio stream which is used for dubbing are multiplexed into each video object.  Also, an optical disc recording apparatus generates the second audio stream by an audio stream generating means,  and multiplexes the generated second audio stream into each video object together with the video object and the first audio stream by a multiplexing means.  The generated video objects are recorded onto the recordable optical disc by a recording means.   The optical disc in which such video objects are stored facilitates dubbing.
Patent CA-2256516-A1 (CA)
Title: Peptides
Inventor: SEEBACH DIETER
IPC: C07C271/22
Filed: 1997-06-12
Abstract: The invention provides novel .beta.-peptides comprising 2 or more different .beta.-amino acid residues, preferably compounds of formula (I) wherein the R residues, X and n are as defined. Compounds of the invention having as few as 5 or 6, .beta.-amino acid residues exhibit stable structures in solution and the compounds generally exhibit good resistance to proteolytic degradation. The compounds of the invention provide a valuable new source of structural diversity for synthesis of biologically active compounds, e.g. for pharmaceutical uses.
Patent CA-2256716-A1 (CA)
Title: Matrix metalloproteinase inhibitors and their therapeutic uses
Inventor: SLISKOVIC DRAGO ROBERT
IPC: C07D209/88
Filed: 1997-08-22
Abstract: The present invention relates to a method of inhibiting matrix metalloproteinases using compounds that are dibenzofuran sulfonamide derivatives having Formula (I). More particularly, the present invention relates to a method of treating diseases in which matrix metalloproteinases are involved such as multiple sclerosis, atherosclerotic plaque rupture, restenosis, aortic aneurism, heart failure, periodontal disease, corneal ulceration, burns, decubital ulcers, chronic ulcers or wounds, cancer metastasis, tumor angiogenesis, arthritis, or other autoimmune or inflammatory diseases dependent upon tissue invasion by leukocytes.
Patent CA-2258664-A1 (CA)
Title: Metal magnesium electrolyzer
Inventor: KAMITAHIRA TAKASHI
IPC: C25C7/06
Filed: 1997-04-30
Abstract: A multibath metal Mg electrolyzer which produces metal Mg in a plurality of electrolytic cells (1, ..., 1). The current efficiencies of the electrolytic cells (1, ..., 1) are improved and the unit power cost is lowered. In order to send Cl2 gas which is a by-product in the electrolytic cells (1, ..., 1) to a refining apparatus, the gas is sucked from the electrolytic cells (1, ..., 1) by a blower (9) provided in a main pipe (8). Automatic valves (11) are provided in branch pipes (7, ..., 7) which are branched out of the main pipe (8) and to which Cl2 gas is introduced from the electrolytic cells (1, ...,1). The automatic valves (11) are of gate-type and their positioners are of pneumatic driving/controlling type. The suction pressures of Cl2 gas from the electrolytic cells (1, ..., 1) are measured and the openings of the automatic valves (11, ..., 11) are automatically controlled so that the measured pressures may be target values.
Patent CA-2259600-A1 (CA)
Inventor: GHAIBEH GIHAD
IPC: H04Q11/04
Filed: 1997-06-25
Abstract: Architecture de réseau et protocole de communication de données pour le transport en aval et en amont de données numériques entre une unité d'extrémité de tête et des terminaux de réseau multiples en aval par un moyen de communication partagé, comprenant des protocoles d'encadrement en aval compatibles avec des normes FEC et de synchronisation d'encadrement de transmission par modem DAVIC/DVB au niveau de la couche physique. Les trames de données en aval sont formées par deux ou plusieurs paires répétitives de tranches de trames compatibles DVB, chaque trame aval étant transmise sur le même intervalle, c'est-à-dire 250 usec dans des formats préférés, indépendamment du nombre de paires de tranches DVB qu'elle contient. Toutes les cadences de trames en aval sont supportées par une seule cadence de données amont. Une largeur de bande amont est affectée en fonction d'un ensemble sélectionné de critères de fonctionnement et de priorités de type de service, en fonction d'une base d'interrogation et d'une base de contention, sur un ou plusieurs canaux porteurs RF intrabande. Des services à faible retard tel que la téléphone synchrone sont fournis avec la rapidité et la priorité requises.
Patent CA-2260474-A1 (CA)
Inventor: PACKARD THOMAS N
IPC: H02H9/04
Filed: 1999-01-26
Abstract: A transient voltage surge suppressor for an electrical circuit having a hot electrical conductor, a neutral electrical conductor, and a ground electrical conductor includes a first surge suppressor connected between the hot and neutral electrical conductors, a second surge suppressor connected between the hot and ground conductors, and a third surge suppressor connected between the neutral and ground conductors; a first over current fuse connected between the hot electrical conductor and the first and second surge suppressors and a second electrical fuse connected in series between the third surge suppressor and the neutral conductor; and a visible indicator connected between the first fuse and the second fuse for illuminating only when both said first and second fuses are intact, and extinguishing when either of the first and second fuses is open.
Patent CA-2260487-A1 (CA)
Inventor: TAYLOR PHILIP LOUIS
IPC: C08G63/668
Filed: 1999-01-28
Abstract: An environmentally friendly autoxidisable filmforming alkyd polymer coating composition which comprises liquid carrier, autoxidation catalyst and autoxidisable alkyd film-forming polymer at least some of which is a polyester of a polycarboxylate and a polyol containing more than three hydroxyl groups at least some of which are esterified by autoxidisable hydrocarbylcarbonyl moieties characterised in that the polyol comprises an anhydroalditol.
Patent CA-2260593-A1 (CA)
Title: Double-decker or multi-decker elevator
Inventor: KOCH WALTER
IPC: B66B11/02
Filed: 1999-02-02
Abstract: This double-decker elevator (7) is equipped with a deck--distance drive machine (DA) which by reference to positional information adjusts the distances between the individual cars (5, 6) in such a way that each car (5, 6) can stop at the corresponding floor (E1...E6) accurately, which means without forming a step. Measured values of position are stored in memories (RAM13, 14) and periodically updated so as to detect any changes such as, for example, building settlement. Based on this data the necessary deck-distances are calculated which are necessary for all the cars (5, 6) to stop without any of them forming a step. Furthermore, the method and the device can be correspondingly extended for a multi-decker elevator and for any type of control (conventional control, destination call control, etc.).
Patent CA-2260727-A1 (CA)
Title: Polymer compositions
Inventor: BOUWMAN BEN
IPC: C08L75/04
Filed: 1999-02-04
Abstract: Improved polymer composites are provided for use in techniques such as slush molding. The composites may be used to provide items for motor vechicles such as dash boards. The polymer composites comprise a matrix of a thermoplastic polymer containing therein a vinyl polymer.
Patent CA-2265780-A1 (CA)
Title: Sulfated polysaccharides and uses thereof in medical treatment
Inventor: GRADY MICHAEL WILLIAM
IPC: A61K31/715
Filed: 1997-09-10
Abstract: The invention provides sulfated oxidised regenerated cellulose compounds, sulfated alginates, and the salts and hydrates thereof. The compounds are obtained by sulfation of oxidised regenerated cellulose with sulfur trioxide. The invention also provides pharmaceutical compositions comprising the compounds, in particular compositions for the treatment of medical conditions mediated by a matrix metalloproteinase and anticoagulant pharmaceutical compositions.
Patent CA-2270754-A1 (CA)
Title: Procede de selection de souches bacteriennes
Inventor: JEYASINGHAM MARINA
IPC: A61K35/74
Filed: 1999-04-29
Abstract: Cette invention concerne un procédé de sélection de souches bactériennes non pathogènes capables de se fixer sur les sites récepteurs d'adhésion tissulaire de souches bactériennes pathogènes, comprenant les étapes consistant à: a) mettre en contact in vitro lesdits récepteurs avec une souche bactérienne à tester; b) ajouter un anticorps dirigé contre lesdits récepteurs, ledit anticorps étant éventuellement marqué de manière détectable; c) dans le cas où ledit anticorps n'est pas lui-même marqué de manière détectable, ajouter un agent de détection de l'anticorps; d) détecter la présence du complexe formé par ledit anticorps et lesdits récepteurs.
Patent CA-2271178-A1 (CA)
Inventor: MOREAU THIERRY
IPC: H04L9/30
Filed: 1999-05-06
Abstract: A server-server public-key cryptography apparatus is disclosed for use in the computer facilities of central organizations, e.g. on-line service providers. The apparatus has two network connections of the type common to computer networks, used respectively for exclusively receiving input data and exclusively transmitting output data for some elementary private key computation (digital signature, public key decryption, secret key establishment primitive based on a public key algorithm). The secrecy of this private key is supported by a number of the present invention features. Among others, are provided the cryptographic key management operations needed to initially configure, operate, maintain, and re-install in the case of disaster recovery. In operations, the access to the elementary private key computation has to be restricted to those computer applications that are the legitimate users of the private key. The one-way input connection, the one-way output connection, and some features of the cryptographic key management operations are provided to secure this restricted access to the function performed by the secure computing device.
Patent CA-2272671-A1 (CA)
Title: Digital flexographic printing machine
Inventor: ACHELPOHL FRITZ
IPC: B41F31/02
Filed: 1999-05-25
Abstract: The invention relates to a digital flexographic printing machine, comprising a cylinder with an electrostatically chargeable surface (PIP cylinder), to which charging electrodes, a laser write head and a quench electrode are assigned, and comprising an ink applicator, an impression cylinder and a central cylinder. According to the invention, the ink applicator comprises an engraved roller.
Patent CA-2275902-A1 (CA)
Inventor: TOBEY STEPHEN W
IPC: A61K9/00
Filed: 1996-12-23
Abstract: The present invention concerns cool-water dispersible powder formulations comprising high molecular weight hydroxypropyl methylcellulose which has been milled to a specified particle size, with or without encrustation or other surface treatment, for dispersion into consumable liquids or for formulation as dry-mix powders, sauces, instant set puddings and baked goods for human consumption. The formulations are used for reduction of serum cholesterol levels. A process for preparing the formulations and their mode of administration are also provided.
Patent CA-2277153-A1 (CA)
Inventor: DAUBS JAMES
IPC: B66F13/00
Filed: 1998-01-08
Abstract: A system (10) for lifting office furniture such as partitions, panels, desks and filing cabinets. The system includes a base (12) which rests upon a floor, a lifting body (18) movably attached to the base (12) and adapted to raise and lower in a generally vertical direction, and a plurality of preferably removable and interchangeable furniture engagement elements (22) for engaging different types of furniture during lifting.
Patent CA-2277563-A1 (CA)
Inventor: PREECE WILLIAM B
IPC: E21B33/05
Filed: 1999-07-13
Abstract: A plug-dropping head capable of dropping balls or plugs or other objects is disclosed. The plug-dropping head has a compact design with a cylinder having multiple chambers for storage of plugs and/or balls. The device can be actuated manually or automatically, locally or remotely, to rotate the cylinder to present a different bore in alignment with a flowpath through the housing. An exterior signal indicates that the object has fallen through the device. An indexing feature assures alignment of the individual bores in the cylinder which contain a plug or wiper with the main passage through the tool. Flow can be maintained through the tool as the cylinder is rotated. Rotation of the cylinder allows an obstruction device in the flowpath to move out of the way to allow the ball or plug to drop when sufficient alignment is reached.
Patent CA-2278241-A1 (CA)
Title: Phenyl heterocycles as cyclooxygenase-2 inhibitors
Inventor: DUCHARME YVES
IPC: C07F9/6506
Filed: 1994-06-09
Abstract: Compounds useful in the treatment of cyclooxygenase-2 mediated diseases are provided of formula (I): (see formula I) wherein R1 is selected from the group consisting of (a) S(O)2CH3, and (b) S(O)2NH2, and R2 is unsubstituted, mono or di- substituted phenyl wherein the substituents are selected from the group consisting of halo, methoxy, methyl, said halo being selected from the group consisting of fluoro, chloro and bromo; the compounds (I) are produced in a process of treating in a non-aqueous polar solvent a compound of formula (A) (see formula A) wherein R1 and R2 are as defined above, in the presence of a strong base; to yield said compound of formula (I).
Patent CA-2282095-A1 (CA)
Title: Valve plate and distributor plate
Inventor: OLSON LAWRENCE P
IPC: F04B43/02
Filed: 1999-09-14
Abstract: An improved control mechanism for a diaphragm pump which eliminates the potential for an "over-center" condition. The present invention contributes to high-efficiency pumping at desired pressures and flow rates.
Patent CA-2285667-A1 (CA)
Title: Viral vectors having chimeric envelope proteins containing the igg-binding domain of protein a
Inventor: MERUELO DANIEL
IPC: C12N7/00
Filed: 1998-03-30
Abstract: The invention involves viral vectors that can be used to transduce a target cell, i.e., to introduce genetic material into the cell. The targets of interest are eukaryotic cells and particularly human cells. The transduction can be done in vivo or in vitro. More particularly the invention concerns viral vectors that have chimeric enveloppe proteins and contain the IgG-binding domain of protein A. These vectors when used in conjunction with antibodies targeting a particular cell are particularly useful for gene therapy.
Patent CA-2288897-A1 (CA)
Inventor: WALKER CLINT DUANE
IPC: A61P25/28
Filed: 1998-04-27
Abstract: La présente invention concerne une classe d'aminotétralines convenant comme agonistes de 5-HT¿1D.alpha.?.
Patent CA-2289494-A1 (CA)
Inventor: FUKUSHIMA NORIAKI
IPC: B01D69/08
Filed: 1998-04-30
Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 µm and a membrane thickness of 10 to 150 µm, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.