baber/WOPTO huggingface dataset:
Patent CA-2295304-A1 (CA)
Title: Fluorescent dibenzazole derivatives and methods related thereto
Inventor: XU CHENG
IPC: H04N21/443
Filed: 1998-07-21
Abstract: Dibenzazole compounds having general structure (I) and (II), wherein R1, R2, R3, R4, R5, R6 are independently H or a substituent which aids in solubility of the compound or which provides a linker arm for linking the compound to another moiety; Y is H or a cleavalable moiety; X is a hydrogen, halogen, CF3, or SO3H; V and W are oxygen or sulfur; Z is -C=C-, -CC- or an aromatic ring moiety; and n is 0, 1, or 2. When n=0 at least one of R1, R2, R3, R4, and R5 is a substituent which aids in solubility of the compound or which provides a linker arm for linking the compound to another moiety or X is a halogen, CF3 or SO3H. These compounds are highly fluorescent and can be easily detected using a fluorometer. Derivatives in which the Y group is a substituent other than H contain a fluorescence inhibiting chemical moiety that upon removal restores the fluorescence of the compound. Methods for their synthesis and application are provided.
Patent CA-2295364-A1 (CA)
Inventor: PROUDFOOT GLENN C
IPC: E21B43/38
Filed: 2000-01-12
Abstract: A method of extracting liquid hydrocarbons from geological formations having a reduced or low liquid hydrocarbon flow rate utilizing a wellbore extending downwardly from the surface of the ground into the geological zone of interest. The method includes the steps of first creating at least one downhole reservoir through enlarging a portion of the wellbore. The downhole reservoir is made substantially larger than the wellbore and formed so as to hold a desired amount of effluent, which includes liquid hydrocarbons, based upon approximated flow rates of effluent from the geological zone of interest. Effluent is allowed to accumulate in the downhole reservoir for a desired length of time until it reaches a desired level. Finally, the effluent is evacuated from the downhole reservoir through the use of a pump.
Patent CA-2296513-A1 (CA)
Inventor: HOFER RICHARD A
IPC: A61F9/007
Filed: 1998-08-04
Abstract: La présente invention concerne des systèmes, des procédés et des appareils destinés à une ablation sélective de la surface cornéenne d'un oeil afin d'obtenir une forme cornéenne voulue, notamment afin de corriger une hypermétropie/astigmatisme par sculpture au laser de la surface cornéenne de manière à augmenter sa courbure. Dans un aspect de la présente invention, le procédé consiste à diriger un faisceau laser sur la surface cornéenne d'un oeil, et à modifier la courbure initiale de la surface cornéenne présentant des caractéristiques d'hypermétropie et d'astigmatisme pour obtenir une courbure présentant des propriétés optiques améliorées grâce à une correction. On augmente la courbure de la surface cornéenne antérieure pour corriger l'hypermétropie, tandis qu'on effectue une sculpture volumétrique cylindrique du tissu cornéen pour corriger l'astigmatisme. De préférence on effectue les corrections d'hypermétropie et d'astigmatisme en établissant une zone de correction optique sur la surface cornéenne antérieure de l'oeil, et en dirigeant un faisceau laser à travers un élément à ouverture variable (35) conçu pour produire une ablation rectangulaire (c'est-à-dire une correction cylindrique) sur une partie de la zone de correction optique. Le faisceau laser est alors déplacé par segments sélectionnés à travers la zone de correction optique pour produire une série d'ablations rectangulaires sur la zone de correction qui augmente la courbure de la surface cornéenne pour corriger l'erreur de réfraction hypermétrope.
Patent CA-2298054-A1 (CA)
Inventor: WANER JOHN
IPC: A47G25/06
Filed: 2000-02-04
Abstract: Apparatus are disclosed for securely retaining a plurality of garment hangers. One embodiment of an apparatus in accordance with the invention includes a hanger bar, a retainer bar, and a pair of end assemblies. Each end assembly is coupled to an end of the hanger bar and has a pair of guide walls projecting away from the hanger bar to form a guide channel. The retainer bar is slideably disposed and moveable within the guide channel between an open position and a clamping position to engage and secure the hangers to the hanger bar. A latching mechanism is attached to each end assembly and is engageable with the retainer bar to secure the retainer bar in the clamping position. The latching mechanism is preferably at least partially disposed between the guide walls to protect the latching mechanism from accidental bumping, thereby reducing unintentional disengagement of the latching mechanism. In an alternate embodiment, an apparatus includes at least one biasing member that urges the retainer bar away from the hanger bar to facilitate loading or unloading of the hanger bar. In another alternate embodiment, an apparatus includes an end assembly having a top wall extending between the guide walls to form a mechanical stop that limits the upward travel of the retainer bar away from the hanger bar, and providing additional protection for the latching tab against accidental bumping. In yet another alternate embodiment, an apparatus includes a coupling member attached to each end of the retainer bar, the coupling members being engageable with the latching mechanism to engage and secure the retainer bar in the clamping position.
Patent CA-2300174-A1 (CA)
Inventor: SABAN DANIEL MICHAEL
IPC: H02K17/16
Filed: 1999-06-18
Abstract: A rotor core is formed from a stack of laminations. The core includes a plurality of generally circular laminations in a stacked formation one on top of each other. Each lamination defines an axis collinear with an axis of each other lamination in the stacked formation. The laminations each have first and second surfaces and the stack is configured to define at least one inner lamination having laminations adjacent to both its first and second sides and outer laminations having laminations adjacent to only one of its first and second sides. Each lamination has a predetermined number of circumferencially equally spaced slots that define conductor receiving regions. Each inner lamination includes at least one interlocking projection extending from one of the first and second surfaces thereof, at a predetermined radial distance from the lamination axis. Each lamination further defines at least one projection receiving region formed therein for receiving a projection from an adjacent lamination. When viewing the laminations stacks parallel to the axis, the projections are engaged in their respective projection receiving regions so as to define a staggered path of projection and receiving region engagements through the lamination stack. This staggered path configuration defines an elongated, tortuous path having a length greater than a height of the stack for eddy currents through the lamination stack, to increase impedance of an eddy current path therethrough.
Patent CA-2302218-A1 (CA)
Title: Packet network
Inventor: CARTER SIMON FRANCIS
IPC: H04L12/54
Filed: 1998-09-09
Abstract: A new approach to providing both bounded-delay and best-effort operation in a packet network node is described. The bounded-delay mode is capable of providing a firm end-to-end delay bound, but in contrast to the combination of RSVP and Guaranteed service proposed within the IETF, It does this with minimal complexity.  Network nodes are provided with dual packet buffers associated with bounded delay and best effort classes of service respectively. Appropriate dimensioning, if necessary enforced through CAC methods, ensure that packets admitted to the bounded delay buffer are provided the firm delay bound. CAC methods are described which are applicable for packet flows as small as a single packet. A means is also offered for removing the traditional network signalling phase. A related architecture for use with hosts is also described.
Patent CA-2302389-A1 (CA)
Inventor: GARDNER FRED ERNEST
IPC: F03B13/24
Filed: 1998-09-04
Abstract: The invention relates to a device (1) for energy conversion from wave movement in water, comprising: a frame (2) connectable to the bottom, a container (3) for containing a gas, which container is formed by at least two parts, a first part (4) connected to the frame (2) and a second part (5) displaceable in vertical direction relative to the first container part, energy converting means (9) for energy conversion from the displacement of the second container part, and means (19) for varying the volume of the space in the container intended for containing gas.
Patent CA-2302831-A1 (CA)
Title: Nouveau microorganisme
Inventor: WATANABE KATSUYO
IPC: A61K35/74
Filed: 1998-09-03
Abstract: L'invention concerne un nouveau microorganisme qui ne possède pas de période d'induction, qui entame immédiatement une croissance exponentielle, et qui est non hémolytique, comme le Bacillus sp. OYK-01-600 (FERM BP-6394). Les bactéries OYK en soi possèdent des activités antimicrobiennes contre les bactéries toxiques (telles que Staphylococcus aureus, notamment le Staphylococcus aureus résistant à la méthicilline, l'Escherichia coli pathogène, notamment O-157, la Legionella pneumophila, et la Klebsiella pneumoniae). Une différence de vitesses de croissance peut inhiber les bactéries émettant une odeur répugnante et de nombreuses bactéries infectieuses nuisibles. Lorsqu'on utilise ce microorganisme pour la production de compost, une élévation rapide de la température d'une cuve de fermentation provoquée par la génération de chaleur initiale majeure facilite la production de compost arrivé à pleine maturité.
Patent CA-2304900-A1 (CA)
Inventor: WEISS MICHAEL
IPC: H04N7/15
Filed: 2000-04-07
Abstract: A system for conducting a virtual audio-visual conference between two or more users comprising two or more client stations each acting as a signal source and destination for each respective user, having a user interface for audiovisual input and output including audio signal reception and generation means for receiving and generating audio signals, one or more servers, and a network coupling the client stations and the servers, wherein each user is represented as a corresponding movable visual symbol displayed on the user interfaces of all coupled client stations and the audio signal of all users is generated at each client station with an attenuation according to the spatial position of the respective symbols on the user interfaces and according to the direction in which each movable visual symbol of each signal source is oriented on the user interface.
Patent CA-2306912-A1 (CA)
Title: Weldable anti-corrosive aluminium-magnesium alloy containing a high amount of magnesium, especially for use in aviation
Inventor: YELAGIN VIKTOR
IPC: C22C21/06
Filed: 1999-08-10
Abstract: Weldable, high-magnesium-content aluminum-magnesium alloy consisting of at least 5 - 6 %w/w magnesium (Mg), 0.05 - 0.15 %w/w zirconium (Zr), 0.05 - 0.12 %w/w manganese (Mn), 0.01 - 0.2 %w/w titanium (Ti), 0.05 -- 0.5 %w/w of one or more elements from the scandium group and/or terbium (Tb), wherein at least scandium (Sc) is included, 0.1 - 0.2 %w/w copper (Cu) and/or 0.1 - 0.4 %w/w zinc (Zn), along with aluminum (Al), and unavoidable contamination does not exceed 0.1 %w/w silicon (Si).
Patent CA-2307174-A1 (CA)
Inventor: EBNETH MARCUS
IPC: C12N15/82
Filed: 1998-04-09
Abstract: L'invention concerne des molécules d'ADN recombinées contenant une séquence d'ADN qui code pour une protéine présentant l'activité biologique d'une 2-désoxyglucose(6)phosphate (2-DOG-6-P) phosphatase et qui se trouve sous le contrôle de séquences régulatoires d'un promoteur actif dans les végétaux et de signaux de transcription-terminaison et/ou polyadénylation. L'invention concerne également des vecteurs et des cellules hôtes qui contiennent les molécules d'ADN recombinées précitées. Sont également décrits des procédés pour la fabrication de cellules végétales et de végétaux transformés à l'aide des molécules d'ADN recombinées et des vecteurs précités. L'invention concerne en outre des végétaux transgéniques, leurs produits de récolte et leurs matériaux de multiplication, ainsi que des cellules et des tissus végétaux, qui contiennent les molécules d'ADN recombinées ou les vecteurs précités ou bien sont fabriqués à l'aide du procédé décrit.
Patent CA-2309242-A1 (CA)
Title: Novel 19-nor steroids substituted in position 11.beta., preparation method and intermediates, application as medicines and pharmaceutical compositions containing them
Inventor: NIQUE FRANCOIS
IPC: C07J31/00
Filed: 1998-11-16
Abstract: The invention concerns compounds of formula (I) in which: X is a halogen atom; D represents the radical of a pentagonal or hexagonal cycle optionally substituted and optionally unsaturated; R¿1?, R¿2?, R¿3?, R¿4?, X and n are as defined in the description. The invention also concerns the preparation method and intermediate, their application as medicine and the pharmaceutical compositions containing them.
Patent CA-2309631-A1 (CA)
Title: Graft polymeric membranes and ion-exchange membranes formed therefrom
Inventor: STONE CHARLES
IPC: H01M8/10
Filed: 1998-11-12
Abstract: Graft polymeric membranes in which one or more trifluorovinyl aromatic monomers are radiation graft polymerized to a preformed polymeric base film are provided, as well as ion-exchange membranes prepared therefrom. Preferred monomers include substituted .alpha.,.beta. .beta.$g(-)trifluorostyrenes and trifluorovinyl naphthalenes which are activated towards the grafting reaction or facilitate the introduction of more than one ion-exchange group per monomer unit in the grafted chains. The ion-exchange membranes are useful in dialysis applications, and particularly in electrochemical applications, for example as membrane electrolytes in electrochemical fuel cells and electrolyzers.
Patent CA-2311584-A1 (CA)
Inventor: JONSSON RUNE LENNART
IPC: G11B19/26
Filed: 1998-11-18
Abstract: An uninterruptible power supply (UPS) includes a transformer, a low voltage converter (02), a rectifier, and a high voltage inverter (01). The low voltage converter comprises a battery, a first switching device (Q3), a second switching device (Q4), and first drive circuits (41, 42). The high voltage inverter (01) includes first and second load terminals adapted to be coupled across a load in an emergency situation; an output capacitor (C); a third switching device (Q1) and a fourth switching device (Q2), and second drive circuitry (43, 44) for driving the third and fourth switching devices from conducting to non-conducting states and vice versa so as to produce a quasi-sinusoidal output voltage waveform across the load terminals.
Patent CA-2313071-A1 (CA)
Title: Device for separating material webs lying on top of each other
Inventor: APFLER GERHARD
IPC: B31B50/80
Filed: 1999-10-04
Abstract: The invention relates to a device for separating two lines of material which are arranged on top of each other. The lines of material are to be separated whilst they are being transported on a conveying device, the first of the lines of material being detachably fixed to the conveying device. The inventive device comprises a suction device (8, 9), which is moveable in relation to the second line of material and by which means it is able to temporarily draw the second material by suction and separate it from the first line of material. The device also has two cranks (10, 13) which are set apart and which each rotate about a first pivot pin (10a, 13a) and are each rotationally connected to the suction device (8) by a second pivot pin (10b,13b). The inventive device is characterised by a drive device with a peripheral engaging element which is connected to an engaging element configured on one of the cranks. The paths of revolution of the drive device engaging element and the crank engaging element do not coincide and are nonparallel and the engaging elements engage with each other in such a way that they can be displaced in relation to each other.
Patent CA-2314238-A1 (CA)
Title: Synthesis of combretastatin a-4 prodrugs and trans-isomers thereof
Inventor: PETTIT GEORGE R
IPC: C07F9/12
Filed: 1999-01-08
Abstract: Combretastatin A-4 has been previously selected for pre-clinical development as antineoplastic agents. However, it is essentially insoluble in water. New water soluble derivatives of combretastatin A-4 and its qualified analogs have been discovered and synthesized through a multistage process using other derivatives of combretastatin A-4 as intermediates. These water soluble derivatives are herein denominated as "Combretastatin A-4 Prodrugs".
Patent CA-2316029-A1 (CA)
Title: Removable retainer arrangements for flexible, vehicle tops
Inventor: TROEGER RICK H
IPC: B60J7/10
Filed: 2000-08-16
Abstract: Retainer arrangements for removably attaching flexible tops to sport utility, convertible, and other vehicles. The arrangements include a belt or flange which is sewn or otherwise attached to the flexible top and a U-shaped channel member which is formed on the vehicle body. In the preferred embodiments, the belt or flange is received in the U-shaped channel member and a mating protuberance and recess arrangement is provided to removably lock the flange in the channel member.
Patent CA-2318300-A1 (CA)
Title: Process for rigid polyurethane foams
Inventor: BAZZO WALTER
IPC: C08J9/12
Filed: 1999-01-21
Abstract: Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate with a polyfunctional isocyanate-reactive component in the presence of a blowing agent mixture comprising from 50 to 90 % by weight of cyclopentane and from 10 to 50 % by weight of a mixture comprising isopentane and/or n-pentane and isobutane and/or n-butane wherein the weight ratio of isopentane and/or npentane over isobutane and/or n-butane is between 5/95 and 95/5.
Patent CA-2318755-A1 (CA)
Inventor: KORHONEN SEPPO
IPC: B65D59/00
Filed: 1999-02-11
Abstract: Packing protector for protecting the edge areas of a sheet-like object, said packing protector consisting of an edge protector (1) formed by narrow strips and of flanges (2, 3) extending from the edge protector to opposite surfaces of the object to be protected, both the edge protector and the flanges being preferably manufactured from cardboard. According to the invention, the edge protector (1) comprises joining areas (4) connecting adjacent strips (5) of the edge protector together so as to press the flanges obliquely toward each other.
Patent CA-2320795-A1 (CA)
Inventor: SIMPSON JOHN A
IPC: A61M25/00
Filed: 1999-04-30
Abstract: Ce cathéter a un stylet fait d'un matériau élastique et à mémoire de forme, de forme recourbée préformée au niveau de son extrémité distale donnant lieu, en l'occurrence, à une gaine préformée recourbée. Cette gaine comporte plusieurs électrodes au niveau de son extrémité distale, électrodes destinées à entrer en contact avec un tissu biologique choisi et à transmettre à ce tissu une énergie d'ablation. Cette gaine comporte également un "tendon" monté axialement et destiné à provoquer une flexion de l'extrémité distale. Le matériau constituant le stylet permet le redressage de la gaine du cathéter durant son introduction dans le corps du patient et la progression des électrodes vers le tissu cible. Au moment où les forces de redressage ne s'exercent plus, par exemple au moment de l'entrée dans une cavité cardiaque, le matériau du stylet reprend sa forme recourbée préformée forçant l'extrémité distale porteuse des électrodes à se recourber en prenant ladite forme recourbée préformée. L'opérateur peut mettre l'extrémité distale recourbée en contact avec le tissu cible et déplacer axialement le tendon comme désiré afin de s'assurer une meilleure maîtrise de la courbure au niveau de l'extrémité distale de la gaine du cathéter pour régler le rayon de courbure et établir un meilleur contact des électrodes et du tissu cardiaque. Le stylet est, de préférence, à base de nitinol.
Patent CA-2321443-A1 (CA)
Title: Device for permanently marking a selected tissue location within a patient's body
Inventor: OUIMET-OLIVA DENISE
IPC: A61B34/20
Filed: 2000-09-29
Abstract: A device for marking a selected tissue location within a patient's body comprises at least two markers pre-loaded into a hollow needle and packaged in a sterile fashion with a stopper to prevent a stylet inserted into the needle from releasing the markers during shipping. An indexing mechanism is also provided for releasably blocking the stylet at successive predetermined levels of insertion into the needle with each level of insertion being associated with the discharge of a single marker.
Patent CA-2323982-A1 (CA)
Inventor: LUU KY THOAI
IPC: H03F1/32
Filed: 2000-10-19
Abstract: An RF amplifier system and method for varying the phase of an RF signal made up of a first train of pulses exhibiting a fixed frequency and fixed duty pulse cycle and wherein each pulse is of a fixed amplitude and duration. An integrator converts each pulse cycle of the RF signal into a dual slope symmetrical ramp signal. A first level signal and a second level signal are provided and are equally spaced from a reference level. The dual slope ramp signal is compared with the first and second level signals. A first pulse signal is provided for a time duration corresponding with the time duration that the ramp signal exceeds the first level signal and a second pulse signal is provided for a time duration corresponding with the time duration that the second level signal exceeds the lamp signal. First and second pulse generators respectively receive the first and second pulse signals and provide first and second trigger pulses. A bistable circuit responds to the first and second trigger pulses to be in respective first and second states and provide an output RF signal made up of a second train of pulses shifted in phase from the first train by an amount related to the magnitude of the first level signal or the second level signal.
Patent CA-2325011-A1 (CA)
Inventor: FREEGARD GRAHAM JOHN
IPC: C04B40/06
Filed: 1999-03-24
Abstract: La présente invention concerne un mélange prêt à l'emploi de plâtre adhésif au gypse à longue durée de conservation. Il est possible d'en induire la prise par adjonction d'un accélérateur. Un premier aspect de l'invention concerne un mélange prêt à l'emploi comprenant un semi-hydrate de sulfate de calcium, de l'eau, et un retardant comprenant un polymère ou un copolymère d'un monomère représenté par la formule générale (I) ou l'une de leurs formes ionisées. Dans cette formule générale (I), x et y sont des entiers pouvant être identiques ou différents. Un deuxième aspect de l'invention met en oeuvre un retardant comprenant un polymère ou copolymère d'anhydride malique. Un troisième aspect de l'invention met en oeuvre un retardant comprenant un polymère ou un copolymère d'un monomère représenté par la formule (II) dans laquelle R est C¿4?H¿9? ou (CH¿3?)¿2?CH. Un quatrième aspect de l'invention met en oeuvre un retardant comprenant pour 0,09 % à 1 % de la masse de plâtre un polymère ou copolymère d'un monomère représenté par la formule (III) et présentant une masse moléculaire comprise entre environ 110.000 et 140.000. L'invention concerne également un système d'enduit prêt à l'emploi comprenant une composition de plâtre telle que celle précédemment décrite et un accélérateur de prise qui, lorsqu'il est mélangé à la composition cimentique, induit la prise de ladite composition cimentique.
Patent CA-2325391-A1 (CA)
Inventor: HUNTER SHIRLEY WU
IPC: G01N33/53
Filed: 1999-04-16
Abstract: The present invention relates to high molecular weight Dermatophagoides proteins, nucleic acid molecules encoding such proteins, and therapeutic and diagnostic reagents derived from such proteins.