baber/WOPTO huggingface dataset:
Patent CA-2258732-A1 (CA)
Title: Prosthetic repair of body passages
Inventor: LAUTERJUNG KARL-LUTZ
IPC: A61F2/82
Filed: 1997-06-19
Abstract: A prosthesis that resiliently engages a body passage includes an annular clamping ring which may be folded along a diametric axis for insertion into the body passage.      The clamping ring is adapted to resiliently spring outwardly, once in position inside the body passage, and to be continually resiliently biased against the interior surface of the body passage. One or more of the clamping rings may be attached to opposed ends of a tubular graft. The rings and connected graft may be positioned in the body passage using an applicator which selectively permits expansion and/or in some embodiments contraction of the annular ring in position within a body passage. Alternatively a retaining member may be used to retain the annular ring in a compressed condition until it is in a desired position within a body passage.      Among other potential uses, the present invention may be useful as a vascular stent for treating abdominal aortic aneurysms.
Patent CA-2259021-A1 (CA)
Inventor: HANSEN JAMES E
IPC: H02H9/04
Filed: 1999-01-27
Abstract: A control circuit (30) drives the coil (20) of a contactor (10) in response to a control voltage being applied. The control circuit (30) includes a power supply (31) that produces a regulated output voltage from the control voltage. The onset of the regulated output voltage starts a timer (34) which controls the width of pulses produced by a PWM  controller (33). The pulses control a transistor (Q2) that applies the control voltage to the coil (20). Initially the pulses cause a high current to flow through the coil (20) to close the contactor (10) and after an interval of time the timer (34) signals the PWM controller (33) to shorten the pulses which applies lesser current to the coil to keep the contactor closed. A  flyback circuit (36) provides a relatively low reverse voltage drop path in parallel with the coil (20) to maintain the electromagnetic field during the periods between the pulses. When the control voltage is removed to open the contactor (10), the flyback circuit (36) provides a high reverse voltage drop path to promptly dampen the coil current.
Patent CA-2260112-A1 (CA)
Inventor: JONES STEPHEN R
IPC: H02P6/18
Filed: 1997-07-09
Abstract: An apparatus for estimating rotor position of a rotating machine having an even number of phase windings selects first and second phase position estimates developed in response to pulses applied to phase windings having associated phase profiles that are displaced at other than 180 electrical degrees and determines a rotor position estimate from the first and second phase position estimates.
Patent CA-2261230-A1 (CA)
Title: Furnace having toroidal fluid flow heating zone
Inventor: DODSON CHRISTOPHER EDWARD
IPC: B01J8/00
Filed: 1997-07-23
Abstract: There is described a furnace of the kind in which a toroidal fluid flow heating zone may be established. The furnace includes a chamber (7a) in which there is provided an inner block and a ring of angled blades (21) between the inner block and an inner wall of the chamber (7a). Means (4a) is provided for delivering fluid into the chamber in such a way that the fluid passes through gaps between the blades and establishes a toroidal fluid flow heating zone in the chamber above the ring of angled blades. Means (23) is also provided for injecting feed particulate material into the chamber in a region where the toroidal fluid flow heating zone is to be established. In one arrangement, means (49) is additionally provided for injecting fuel into the chamber in a region above the ring of angled blades so that the region in the chamber at which the heating zone is established is elevated above the ring of angled blades. In another arrangement, means (33) is provided for cooling the inner block.
Patent CA-2261726-A1 (CA)
Inventor: POREE IAN DOUGLAS
IPC: C08F8/50
Filed: 1997-07-25
Abstract: A process for decomposing a polymer which is capable of undergoing thermal depolymerisation to its monomer or monomers, such as for example poly(methylmethacrylate), and for the recovery of at least one of the monomers, includes the steps of subjecting the polymer in solid, gel, partially molten or molten form to microwave heating for a time and at a temperature sufficient to decompose the polymer to produce the monomer or monomers in gaseous, liquid or solid form, without substantial decomposition of the monomer or monomers, and recovering at least one of the monomer or monomers. The monomer or monomers may then be reused for polymerisation.
Patent CA-2262325-A1 (CA)
Inventor: REA KEITH ROBERT
IPC: B65D79/00
Filed: 1999-02-18
Abstract: A container has a movable end closure for accommodating expansion or contraction of the product packaged therein. The container includes a hollow body portion with opposed open ends and an inside surface and an end closure positioned at each of the open ends of the hollow body portion and secured thereto for closing the container with product contained therein. One of the end closures is of a generally outwardly-facing cup-shaped configuration positioned inside the hollow body portion and has a radially-extending central portion of generally the same configuration and dimensions as the inside surface of the body portion and an accordion-folded sidewall extending axially from the central portion toward the body portion open end to define a free end area secured to the inside surface of the body portion at the open end. This end closure is positioned so that the central portion may axially move along the body portion inside surface toward or away from the body portion open end by contraction or expansion of the end closure accordion-folded side wall to increase or decrease the effective volume of space within the container.
Patent CA-2262508-A1 (CA)
Title: Lubricant powder for powder metallurgy
Inventor: UKAI NORIO
IPC: B22F1/00
Filed: 1997-08-05
Abstract: The invention concerns a lubricant for powder metallurgical compositions containing 10-60 % by weight of a lithium salt of a fatty acid, 0-40 % by weight of a zinc salt of a fatty acid and 40-90 % by weight of a fatty acid bis-amide. 10-60 % by weight of the lubricant is made up by the lithium and the zinc salt.
Patent CA-2264037-A1 (CA)
Inventor: HUNGATE RANDALL W
IPC: A61K31/155
Filed: 1997-09-09
Abstract: On décrit un composé qui inhibe la thrombine chez l'homme et qui est représenté par la formule générale (I) telle que la formule (a).
Patent CA-2264413-A1 (CA)
Inventor: BAUMGART HUBERT
IPC: C09J11/06
Filed: 1999-03-04
Abstract: Coating composition or adhesive comprising a) at least one binder, b) at least one crosslinker, and c) at least one branched, cyclic and/or acyclic C9-C16-alkane which is functionalized with at least two hydroxyl or thiol groups or with at least one hydroxyl and at least one thiol group.
Patent CA-2265046-A1 (CA)
Inventor: VAN OOYEN JOHANNES ADRIANUS CO
IPC: A23K1/16
Filed: 1997-08-19
Abstract: L'invention concerne une composition contenant de l'acide benzoïque ou un dérivé de l'acide benzoïque, pouvant donner de l'acide benzoïque libre in vivo et être utilisée comme médicament pour les animaux. Ledit acide ou dérivé fait fonction d'antibiotique, favorise la croissance, diminue l'indice de transformation et améliore la digestibilité des acides aminés administrés dans les aliments pour animaux. L'acide benzoïque ou son dérivé peut être administré à l'animal soit dans sa composition alimentaire, soit dans son eau de boisson. Il est particulièrement efficace chez les porcs.
Patent CA-2266443-A1 (CA)
Inventor: SIEBENMANN DIETER
IPC: B65G35/08
Filed: 1997-09-17
Abstract: This invention concerns a device for power transmission suitable in particular for transmitting thrusting forces over linear and any variety of curved paths. This power transmission device has a guide channel (1) in which a series of transmission elements (10) are arranged. The transmission elements (10) can be brought into operative connection with a drive and their faces are in contact with one another. The face sides which contact have an annular ridge (11) and an annular groove (12) respectively. Groove (12) and ridge (11) fit together and rest one within the other when adjacent, elements are coaxially arranged. The cross sections of groove (12) and ridge (11) are such that, positioned one within the other, they can be pivoted one against the other. A linearly aligned series of transmission elements equipped in such a way and pressureloaded forms a kink-resistant rod, which exerts no essential radial forces in linear areas (1.2). In curved areas (1.1) of the path, the transmission elements (10) pivot against one another, to the effect that the pivoting occurs in a guided fashion and the power transmission even in the pivoted position occurs over more than a punctiform area.
Patent CA-2268030-A1 (CA)
Inventor: POMMEZ PHILIPPE JOSEPH
IPC: A61K8/00
Filed: 1998-08-07
Abstract: La présente invention concerne un procédé de stabilisation de LAA dans un milieu aqueux, le procédé consistant à mettre en contact LAA avec au moins un composé capable de former des liaisons hydrogènes avec LAA. Dans un autre aspect, l'invention concerne une composition de LAA aqueuse stable comprenant, outre l'acide ascorbique, au moins un composé lié à LAA par des liaisons hydrogènes, ainsi que son procédé de préparation. La présente invention concerne en outre une émulsion comprenant, dans sa phase aqueuse, au moins un composé lié à l'acide ascorbique lévogyre (LAA) par des liaisons hydrogènes. La présente invention concerne également un produit vitaminé dans lequel une composition de LAA stable telle que décrite ci-dessus est contenue dans des enveloppes organiques qui permettent une libération graduelle et prolongée de LAA dans l'organisme. Ce produit vitaminé peut également comprendre un composé capable de stimuler le métabolisme des fibroblastes. La présente invention concerne enfin une méthode de traitement cosmétique, thérapeutique ou nutritionnel, la méthode consistant en l'administration d'une composition telle que celle décrite ci-dessus.
Patent CA-2268406-A1 (CA)
Title: Optical cross-connect restoration technique
Inventor: AFFERTON THOMAS S
IPC: H04B10/275
Filed: 1999-04-07
Abstract: An alarm and restoration system (28) accomplishes restoration in a ring network (10 1) by monitoring network traffic to detect the occurrence of a single failure arising from a failed optical service path (14i) and the occurrence of a double failure arising from a failed optical service path and an occupied optical protection path (16i). In case of a single failure, the alarm and restoration system (28) restores traffic in the network itself by routing traffic on a restoration path. In the event of a double failure, the alarm and restoration system (28) routes traffic from the failed ring network through an Optical Cross-Connect mesh (22) to transform the double failure into a single failure that can be restored in the network itself.
Patent CA-2269576-A1 (CA)
Title: Paper feeder for a single sheet printer
Inventor: HELLER BERNWARD
IPC: B65H39/042
Filed: 1997-10-20
Abstract: Disclosed is a paper feeder for a single sheet printer (9) provided with a paper dispenser (1). The inventive paper feeder is characterized in that it includes a plurality of compartments (A1 à D1) as well as a circuit (10) for conveying the paper from one compartment to the printer (9). The feeding circuit (10) presents a branch (11) leading to the sheet receiving station (13), to which an additional paper dispenser with a structure substantially similar to that of the paper dispenser (1) in the printer (9) can be connected.
Patent CA-2272244-A1 (CA)
Title: Collagenase recombinee type i provenant du clostridium histolyticum, et son utilisation pour l'isolation des cellules et des agglomerations cellulaires
Inventor: AMBOSIUS DOROTHEE
IPC: C12N9/52
Filed: 1997-10-30
Abstract: Un polypeptide ayant les propriétés d'une collagénase classe I du Clostridium histolyticum (CHC I) et de la séquence aminoacide SEQ ID NO:2, prolongée éventuellement en N terminal d'un ou plusieurs aminoacides de la séquence SEQ ID NO:3, est avantageusement approprié pour l'isolation de cellules à partir de tissus de mammifères et de tissus humains.
Patent CA-2272601-A1 (CA)
Title: Peptides for inhibiting retroviruses
Inventor: HOWARD MARK E
IPC: C07K16/18
Filed: 1997-10-03
Abstract: Peptides derived from shark immunoglobulin preparations are used to prepare compositions, including pharmaceutical compositions, for inhibiting retrovirus replication in susceptible cells. The peptide preparations are useful for inhibiting diseases associated with retroviral infection, such as acquired immunodeficiency syndrome. The peptides also inhibit growth of tumor cells, especially sarcomas and leukemias.
Patent CA-2275653-A1 (CA)
Inventor: OLSSON CHRISTER
IPC: H05K3/32
Filed: 1997-12-16
Abstract: L'invention concerne un procédé et un dispositif de connexion électrique et mécanique d'un composant électrique à grande puissance (111) qui transmet des signaux électriques haute fréquence aux conducteurs (120) d'une carte imprimée. Selon l'invention, ce composant comprend des connexions (114) en saillie horizontalement qui sont collées aux conducteurs de la carte imprimée au moyen d'une colle (112) électricoconductrice, dont l'adhérence au support est supérieure à une valeur donnée. Le composant subit des variations de température répétées. La liaison reliant les connexions (114) aux conducteurs (120) est donc soumise à des contraintes. La longueur des connexions est choisie en fonction d'une valeur seuil prédéterminée relative à l'atténuation maximale admissible que peut subir le signal électrique haute fréquence lorsqu'il traverse le composant électrique à grande puissance par les connexions. La surface de contact des connexions faisant face au joint collé peut comporter un certain nombre de cavités, ce qui permet à la colle de mieux adhérer aux connexions.
Patent CA-2275872-A1 (CA)
Title: Fastener tension indicator
Inventor: HODGE MALCOLM H
IPC: F16B31/02
Filed: 1997-12-17
Abstract: A mechanical sensor for use with bolts (90), nuts (29), eye bolts and other fasteners is provided to sense fastener tension and to mechanically indicate that tension and changes therein by mechanically measuring deformation of the substrate (94) being clamped by the fastener relative to the distortion or lack thereof in the substrate immediately adjacent the deformed substrate. The differential substrate deformation produces measurable and often clearly visible movement of a portion of the sensor (24, 96, 101). Such movement may be interrogated through utilization of visual, optical, electro-optical means as desired.
Patent CA-2275891-A1 (CA)
Title: Method of producing highly permeable microporous polyolefin membrane
Inventor: KAIMAI NORIMITSU
IPC: B01D71/26
Filed: 1998-09-21
Abstract: A process for preparing a highly permeable microporous polyolefin film, characterized by extruding, at a draft ratio ranging from 3 to 50, a polyolefin solution comprising 5 to 40 % by weight of either a polyolefin having a weight-average molecular weight ranging from 3×10 5 to less than 1×10 6 and a weight-average molecular weight/number-average molecular weight ranging from 5 to 300 or a polyolefin composition having as a whole a weight-average molecular weight ranging from 3×10 5 to less than 1×10 6 and a weight-average molecular weight/number-average molecular weight ranging from 5 to 300 and 95 to 60 % by weight of a solvent, melt stretching the extrudate monoaxially, cooling and solidifying the stretched extrudate to form a gel, removing the residual solvent from the gel followed by drying, and heat setting the dried gel at a temperature ranging from 80 °C to the melting point thereof. Monoaxially stretching the viscous polyolefin solution in a molten state serves not only to increase the average pore diameter of the micropores to thereby improve the permeability of the microporous polyolefin film, but also to increase the rate of film preparation to thereby improve the productivity drastically.
Patent CA-2275979-A1 (CA)
Inventor: LEMANN PATRICIA
IPC: A61K8/00
Filed: 1999-06-22
Abstract: La présente invention a pour objet une composition anhydre stable, à usage cosmétique ou pharmaceutique, comprenant au moins une huile de silicone et des pigments, caractérisée par le fait qu'elle comprend en outre au moins une silicone oxyalkylénée substituée en .alpha.-.omega..
Patent CA-2280550-A1 (CA)
Title: Bright metallic intaglio ink composition
Inventor: LYEN ERIC A
IPC: C09D11/037
Filed: 1999-08-20
Abstract: A two-part metallic ink composition for intaglio printing is provided which produces bright and shiny ink deposits when printed. The two parts of the ink are stored separately from each other and mixed together either immediately or within a predetermined time period prior to use. The first part comprises varnish in the amount of 60-85%, wax in the amount of 6-15% and solvent in the amount of 6-25%, by weight. These three constituents of the first part are heated together until the wax has just completely melted, stirred and cooled to room temperature. The resultant mixture, which appears physically as a gelled varnish (vehicle), advantageously permits the formulation of a bright metallic intaglio ink without the use of an extender. The second part comprises metallic pigment.      About 1 part by weight of the first part and about 0.5-2.0 parts by weight of the second part are mixed together to form the composition. Preferably, the metallic pigment is prewetted with about 2-4% solvent, so as to form a bread crumb-type consistency, before it is mixed with the first part to prevent dusting (i.e. the escape of pigment into the environment) and to assist in the mixing of the two components. The first part may comprise a drier in the amount of 0.4-2.0% by weight. The particle size of the pigment is preferably less than about 18 microns. To produce the brightest reflective appearance the printed ink composition deposit is heated, immediately following printing, to about 65-75 °C for a period of about one second.
Patent CA-2288740-A1 (CA)
Title: Threaded connection for enhanced fatigue resistance
Inventor: EVANS ED
IPC: E21B17/08
Filed: 1998-04-14
Abstract: A threaded connection for improving fatigue resistance to cyclic loading is disclosed. The threaded connection (10) basically comprises a pair of interlocking members (12, 16) having corresponding radially inner (52) and radially outer (50) spiral threads thereon, each spiral thread including a spiral compression flank (56, 68) and a spiral tension flank (58, 64) wherein at least one of the spiral compression flanks (56, 68) and spiral tension flanks (58, 64) on the inner spiral threads are in planar engagement with a corresponding spiral compression flank (56, 68) and spiral tension flank (58, 64) on the outer spiral thread. Axial spacing between the tension flanks (58, 64) and the compression flanks (56, 68) on the radially inner and radially outer spiral threads further define a stress reducing spiral root surface (60, 62) on at least one of the radially inner (52) and radially outer (50) threads and a corresponding crest surface (54, 66) on the other radially inner and radially outer spiral threads.
Patent CA-2288985-A1 (CA)
Title: Security document containing encoded data block
Inventor: MOWRY WILLIAM H JR
IPC: G07D7/12
Filed: 1998-06-09
Abstract: A security document (40, 60) is provided comprising human readable transaction data, a plurality of security image elements (72), a plurality of complementary security image elements (78), and an encoded information block (66) comprising a plurality of digital glyphs (68) printed thereon. The human readable transaction data printed on the top surface of the substrate forms a full tone image and includes an enhanced security data item. The security image elements (72) printed on the top surface of the substrate and the plurality of complementary security image elements (78) printed on the top surface of the substrate define a security image. The encoded information block (66) comprises a plurality of digital glyphs (68) printed on the top surface of the substrate and comprises encoded transaction data corresponding to at least a portion of the human readable transaction data. The digital glyphs (68) are printed on the top surface of the substrate to form less than a full tone image and the encoded transaction data is positioned proximate the enhanced security data item such that any alteration to the enhanced security data item results in inadvertent alteration to the encoded transaction data.
Patent CA-2290048-A1 (CA)
Inventor: WICKSTROM MIKAEL
IPC: H01L29/02
Filed: 1999-11-17
Abstract: A method of fabricating a semiconductor device having active components grown on a substrate, involves providing a semiconductor substrate on which the active components are grown, and doping the semiconductor substrate to render it non conductive and thereby reduce parasitic capacitance between active components thereon. The components typically comprise a VCSEL and monitor.  The doped substrate reduces parasitic capacitance.
Patent CA-2294704-A1 (CA)
Inventor: SMITH CRAIG A
IPC: C12N15/09
Filed: 1998-06-25
Abstract: A protein designated TRAIL-BP binds the protein known as TNF-Related ApoptosisInducing Ligand (TRAIL). The TRAIL-BP finds use in purifying TRAIL or inhibiting activities thereof. Isolated DNA sequences encoding TRAIL-BP are provided, along with expression vectors containing the DNA sequences, and host cells transformed with such recombinant expression vectors. Antibodies that are immunoreactive with TRAIL-BP are also provided.
Patent CA-2294769-A1 (CA)
Title: A fire-retardant roof construction
Inventor: MANNING NOEL CHRISTOPHER
IPC: E04B1/94
Filed: 1998-06-25
Abstract: A fire-retardant roof construction comprising a first set of parallel purlins (7a) extending over said first room (3), each purlin having one end pivotally mounted over a horizontal axis (10) parallel to a wall adjacent to the top of the wall (2); a set of upright cleats (6) of sheet metal secured to the top of said wall (2), each providing the pivotal mounting for a respective purlin (7a) as aforesaid; a second set of parallel purlins (7b) extended over a second room (4), and mounted on cleats (6) in the manner of the first set.  The pivotal mountings so located that each purlin can collapse to hang down from its pivot (10) without structural damage to the wall (2) or the respective cleat (6). A  first respective fireproof curtain (15a) seals the walltop space between each adjacent pair of purlins of the first set. A second respective fireproof curtain (15b) seals the walltop space between each adjacent pair of purlins of the second set.