baber/WOPTO huggingface dataset:
Patent CA-2338471-C (CA)
Title: Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems
Inventor: VISWANATH PRAMOD
IPC: H04B1/713
Filed: 2001-02-27
Granted: 2006-11-07
Abstract: A base station having the strongest downlink signal is identified by utilizing a unique slope of a pilot tone hopping sequence being transmitted by a base station. Specifically, base station identification is realized by determining the slope of the strongest received pilot signal, i.e., the received pilot signal having the maximum energy. In an embodiment of the invention, the pilot tone hopping sequence is based on a Latin Squares sequence. With a Latin Squares based pilot tone hopping sequence, all a mobile user unit needs is to locate the frequency of the pilot tones at one time because the pilot tone locations at subsequent times can be determined from the slope of the Latin Squares pilot tone hopping sequence. The slope and initial frequency shift of the pilot tone hopping sequence with the strongest received power is determined by employing a unique maximum energy detector. In one embodiment, the slope and initial frequency shift of the pilot signal having the strongest received power is determined by finding the slope and initial frequency shift of a predicted set of pilot tone locations having the maximum received energy. In another embodiment, the frequency shift of the pilot signal with the strongest, i.e., maximum, received power is estimated at each of times "t". These frequency shifts are employed in accordance with a prescribed relationship to determine the unknown slope and the initial frequency shift of the pilot signal.
Patent CA-2340467-C (CA)
Title: System and method providing output signal control for a power supply
Inventor: BUCHANAN MARLOWE JAMES
IPC: H02J1/10
Filed: 2001-03-12
Granted: 2009-07-28
Abstract: A control system for selectively isolating a power supply from a common bus is provided. The control system comprises a connection to an output path of an output signal of the power supply and a resistive element providing a variable resistance between an input terminal and an output terminal. The input terminal is connected to the connection and the output terminal is connected to the common bus. The resistive element further comprises a control terminal allowing adjustment of the variable resistance. A control element provides a control signal to the control terminal; the control element is responsive to current flowing between the output path and the common bus.
Patent CA-2348494-C (CA)
Inventor: MORGAN CLIFFORD E
IPC: H01M10/54
Filed: 1999-12-20
Granted: 2007-05-29
Abstract: L'invention concerne un procédé de récupération de la quasi-totalité du soufre contenu dans un accumulateur au plomb usé sous la forme Na2SO4. Le procédé consiste à: (a) briser l'accumulateur pour en évacuer l'acide; (b) séparer le plastique des matériaux contenant du plomb; (c) fondre lesdits matériaux dans un four réverbère dans une atmosphère oxydante afin de volatiliser la quasi-totalité du soufre contenu dans l'alimentation en tant que SO2; (d) laver le SO2 des effluents gazeux à l'aide d'une matière alcaline, telle que NaOH, Na2CO3 ou KOH, afin de produire une solution sulfite soluble; (e) oxyder ladite solution en sulfate, de préférence par son mélange par turbulence avec de l'air; (f) régler le pH par adjonction de l'acide sulfurique séparé de l'accumulateur; (g) extraire les métaux lourds contenus; (h) cristalliser le sulfate en tant que Na2SO4 ou K2SO4; (i) séparer un courant d'extraction du cristallisoir et éliminer les chlorures contenus en tant que produit mélangé sulfate-chlorure par évaporation dudit courant dans un autre cristallisoir. Le procédé permet de produire du Na2SO4 ou K2SO4 à teneur élevée, du H2O condensée pour recyclage dans l'épurateur, et un produit mélangé sulfate-chlorure, avec réduction à des niveaux extrêmement bas des émissions de dioxyde de soufre, de chlorure et de métaux lourds.
Patent CA-2349899-C (CA)
Title: Resonant switched power converter
Inventor: RASCON MARTINEZ MIGUEL
IPC: H02M3/28
Filed: 2001-06-07
Granted: 2009-11-03
Abstract: Resonant switched power converter in which the end of a resonant period coincides with the start of a conducting period of a first switching element (11-4), undesirable dead times being avoided during the operation of a self-excited synchronous rectifier (11-6). To achieve this, a first capacitor (11-8) is added which has the characteristic that its capacitance is a function of the duty cycle of the first switching element (11-4). The variation in the value of the capacitance of the first capacitor (11-8) is implemented by adding in parallel thereto a serial combination of a second capacitor (11-8-1) and a second switching element (11-8-2). The value of the capacitance varies between a first value and a second value.
Patent CA-2352838-C (CA)
Inventor: ROSS RUSSELL FREDERICK
IPC: D21F1/00
Filed: 1999-12-20
Granted: 2009-06-23
Abstract: A paper machine substrate modified to resist contamination by adhesive materials. The paper machine substrate includes: a paper machine substrate; and an active agent that is grafted to the surface of the paper machine substrate to lower the surface energy of the paper machine substrate so that the substrate resists contamination by adhesive material. The paper machine substrate may be made by a process that includes the steps of; providing a paper machine substrate; applying an active agent to the paper machine substrate; and exposing the paper machine substrate to greater than about 2 million rads (Mrad) of radiation to cause a reaction between the active agent and the substrate so the active agent becomes joined to the substrate. The active agent may be a fluorinated monomer, a fluorinated polymer, a perfluorinated polymer, or a polyalkyl siloxane.
Patent CA-2353152-C (CA)
Title: Method of and apparatus for producing power from a heat source
Inventor: ZIMRON OHAD
IPC: F01K23/10
Filed: 2001-07-16
Granted: 2010-05-04
Abstract: A method for producing power from a heat source comprises the steps of: heating an intermediate fluid with heat from the heat source and producing a vaporized intermediate fluid in an intermediate fluid heater/vaporizer. Heat from the vaporized intermediate fluid vaporizes an organic liquid working fluid present in an organic working fluid vaporizer to form a vaporized organic working fluid and intermediate fluid condensate. The vaporized organic working fluid is expanded in an organic vapor turbine for generating power and producing expanded vaporized organic working fluid; the expanded organic vaporized working fluid being condensed to produce an organic fluid condensate with the organic fluid condensate being supplied to the organic fluid vaporizer. According to the present invention, prior to supplying the vaporized intermediate fluid to the organic fluid vaporizer the vaporized intermediate fluid is expanded in an intermediate fluid vapor turbine and power is produced.
Patent CA-2360758-C (CA)
Title: 1-deoxy-d-xylulose-5-phosphate reductoisomerases, and methods of use
Inventor: CROTEAU RODNEY B
IPC: C12Q1/68
Filed: 2000-01-27
Granted: 2011-09-20
Abstract: The present invention relates to isolated DNA sequences which code for the expression of plant 1-deoxy-D-xylulose-5-phosphate reductiosomerase protein, such as the sequence presented in SEQ ID NO:1 which encodes a 1-deoxy-D-xylulose-5-phosphate reductoisomerase protein from peppermint (Mentha x piperita). Additionally, the present invention relates to isolated plant 1-de-oxy-D-xylulose-5-phosphate reductoisomerase protein. In other aspects, the present invention is directed to replicable recombinant cloning vehicles comprising a nucleic acid sequence which codes for a plant 1-deoxy-D-xylulose-5-phosphate reductoisomerase, to modified host cells transformed, transfected, infected and/or injected with a recombinant cloning vehicle and/or DNA sequence of the invention.
Patent CA-2360896-C (CA)
Inventor: LENGLET ERIC
IPC: C07C15/107
Filed: 2001-10-29
Granted: 2011-07-26
Abstract: L'invention concerne un procédé de conversion d'hydrocarbures par au moins une réaction chimique globalement endothermique, dans lequel une charge hydrocarbonée traverse successivement au moins deux zones réactionnelles contenant chacune au moins un catalyseur solide et comprenant entre lesdites zones réactionnelles un réchauffage intermédiaire, dans une zone non catalytique, du courant (ST) issu de la première des deux zones réactionnelles avant son introduction dans ladite seconde zone réactionnelle et dans lequel ce réchauffage est effectué dans un échangeur de chaleur, avec transfert de chaleur essentiellement par convection au moyen d'un fluide thermique TF constitué de vapeur d'eau surchauffée utilisée comme vecteur de chaleur sensible, de température supérieure à 400°C à l'entrée et à la sortie dudit échangeur, en ce que ce fluide thermique TF est chauffé dans un four en amont de l'échangeur de chaleur et en ce que l'écart de température .DELTA.T entre la température du fluide thermique TF à l'entrée de l'échangeur et la température du courant ST à la sortie de l'échangeur de chaleur étant inférieur à 250°C et en ce que le courant TF de vapeur d'eau en sortie de l'échangeur est utilisé selon l'une des options suivantes: a) dans une turbine de détente, ledit fluide thermique ayant une pression supérieure ou égale à 0,7 MPa, aux fins de récupération de puissance, b) en condensation, pour le rebouillage d'une colonne de fractionnement par distillation, ledit fluide thermique ayant une pression comprise entre 1,5 et 13 MPa, c) pour être recyclé, au moins en partie, en amont dudit échangeur, après recompression d'une partie dudit fluide thermique depuis une pression P1 au moyen d'un éjecteur à vapeur alimenté par un courant de vapeur d'eau à pression P2 > P1. L'invention concerne également l'utilisation de ce procédé pour la conversion d'hydrocarbones et l'installation pour la mise en oeuvre de ce procédé.
Patent CA-2369574-C (CA)
Inventor: BOHAYCHUK LARRY J
IPC: E21B47/06
Filed: 2002-01-25
Granted: 2005-04-12
Abstract: In a sub-sea wellhead insert-type choke valve having a bonnet a pair of pressure transmitters are mounted in the bonnet. One transmitter is connected by a passageway with the annular clearance between the cartridge of the insert assembly and the valve body. This transmitter measures the pressure of the fluid in the clearance and transmits signals indicative thereof to a receiver at surface. The other transmitter is connected by a passageway with the fluid in the valve outlet, measures the pressure of this fluid and transmits signals indicative thereof to the receiver. In this way the high and low pressures upstream and downstream of the choke valve flow trim are monitored by transmitters, which can be serviced by bringing the insert assembly to surface.
Patent CA-2369719-C (CA)
Inventor: VUIJK JELLE DANKERT
IPC: B05C17/00
Filed: 2000-06-06
Granted: 2009-04-14
Abstract: The present invention relates to a portable device for spraying a liquid at low pressure, said device comprising a spray arm (220), and characterized in that the spray arm comprises at least one flat fan spray nozzle (230). Preferably, the liquid is a cleaning composition for treatment of carpets and other large fabric coverings, more preferably, a composition comprising surfactants. Also preferably, the portable device is electrically driven, and/or the spray arm is extendible and/or detachable from the device's main unit.
Patent CA-2372544-C (CA)
Inventor: TAKAGI HIRONOBU
IPC: G10L21/10
Filed: 2002-02-18
Granted: 2010-05-11
Abstract: It is one object of the present invention to provide a technique for converting the structure of a Web page into contents that a user can easily listen to, and for permitting the user to access and obtain information without have to perform and navigation, in a manner similar to listening to the radio. A designated target page is obtained from a Web server 3, and a linked list for the target page is analyzed to obtain a linked destination page. A transcoding module 6 inserts the main content of the linked destination page into a linked location on the target page, and converts the page into a structure appropriate for oral reading. Then, a VoiceXML generation module 5 converts the target page into a VoiceXML document, and a VoiceXML browser 4 performs a speech response process for the VoiceXML document. A command is input to the VoiceXML browser 4 orally or by using a dial key entry provided using a telephone 1, and a speech from the VoiceXML browser 4 is output to the telephone 1.
Patent CA-2381777-C (CA)
Inventor: WEINDRUCH RICHARD H
IPC: C12Q1/68
Filed: 2000-08-08
Granted: 2011-10-04
Abstract: L'invention concerne une technique permettant de mesurer l'âge biologique d'un organisme multicellulaire, qui consiste à obtenir un échantillon d'acide nucléique isolé d'un organe, d'un tissu ou d'une cellule de l'organisme, et à déterminer le modèle d'expression d'un panel de séquences prédéterminées dudit acide nucléique pouvant augmenter ou diminuer en réponse à la détermination de l'âge biologique de l'organe, du tissu ou de la cellule. L'invention concerne également une technique permettant d'obtenir des biomarqueurs d'âge. Cette technique consiste à comparer un profil d'expression génique d'un organe, d'un tissu ou de cellules d'un jeune organisme multicellulaire, un profil d'expression génique à partir d'un organe, d'un tissu ou d'une cellule de sujet chronologiquement âgé, et un profil d'expression génique à partir d'un organe, d'un tissu ou d'une cellule de sujet chronologiquement âgé mais biologiquement jeune; et à identifier les altérations d'expression géniques observées lorsqu'on compare les sujets jeunes et les sujets chronologiquement âgés, et non observées, ou d'importance réduite lorsqu'on compare les sujets jeunes et les sujets chronologiquement âgées mais biologiquement jeunes.
Patent CA-2385054-C (CA)
Inventor: JONES RUSSELL
IPC: A45D40/04
Filed: 2000-09-26
Granted: 2008-12-02
Abstract: Dispensers for a solid or soft solid mass comprise a barrel (1), a piston (12) within the barrel (1), and a mechanism for advancing the piston axi-ally within the barrel including a rotor wheel (6). The invention provid es a seat-ing means for the rotor wheel (6) at a predetermined angular position relative to the barrel (1) comprising a boss (9a, 9b) having an inwardly tapered profile (tear drop) and a sump (3a, 3b) dimensioned to receive the boss. The boss is prefe r- ably formed on the rotor wheel (6) and the sump in the base (2) of the barrel (1) . Especially desirably, the dispenser is provided with a pair of bosses and sumps, symmetrically arranged around the rotor wheel and barrel base.
Patent CA-2394214-C (CA)
Title: Polymer compositions containing colloids of silver salts
Inventor: TERRY RICHARD N
IPC: A61L24/00
Filed: 2000-11-29
Granted: 2009-02-03
Abstract: The present invention relates to antimicrobial compositions, methods for the production of these compositions, and use of these compositions with medical devices, such as catheters, and implants. The compositions of the present invention advantageously provide varying release kinetics for the active ions in the compositions due to the different water solubilities of the ions, allowing antimicrobial release profiles to be tailored for a given application and providing for sustained antimicrobial activity over time. More particularly, the invention relates to polymer compositions containing colloids comprised of salts of one or more oligo-dynamic metal, such as silver. The process of the invention includes mixing a solution of one or more oligodynamic metal salts with a polymer solution or dispersion and precipitating a colloid of the salts by addition of other salts to the solution which react with some or all of the first metal salts. The compositions can be incorporated into articles or can be employed as a coating on articles such as medical devices.
Patent CA-2394277-C (CA)
Inventor: PHIFER ROBIN K
IPC: A47L15/42
Filed: 2002-07-19
Granted: 2007-10-02
Abstract: A dishwasher is provided with an adjustable rack that can be moved upwardly and downwardly within the washing chamber to accommodate different sized objects to be washed. The lift mechanism for the rack is housed within the sidewalls of the dishwasher. The lift mechanism employs a cable system to raise both sides of the rack simultaneously, with the rack positioned within or outside the washing chamber and with the rack either loaded or unloaded. In one embodiment, the lift mechanism is manually actuated by turning a handle. In another embodiment, the lift mechanism includes an electric motor with a switch on the control panel for raising and lowering the rack.
Patent CA-2398194-C (CA)
Inventor: LAURE STEFAN
IPC: H05H1/30
Filed: 2002-08-15
Granted: 2009-07-14
Abstract: A method for plasma jet welding by means of a free radio frequency-induced plasma beam wherein, the rf-induced plasma beam is generated by a procedure involving a second process gas into a tube so that it has a tangential flow component and the introduction of the plasma through a metal expansion jet at the outlet.
Patent CA-2403019-C (CA)
Inventor: SONG BRIAN XIAOQING
IPC: C11D3/10
Filed: 2000-10-13
Granted: 2007-12-18
Abstract: A method of increasing specific gravity of a liquid or gel type deteregent product having a pH less than about 10.5, while at the same time imparting transparency or translucency to said liquid or gel type detergent product, comprises: (a) providing a liquid or gel type detergent composition having no greater than 20% by weight of (i) potassium tripolyphosphate and (ii) mixed sodium and potassium tripolyphosphate; (b) maintaining a potassium: sodium weight ratio greater than at least about 0.4:1; and (c) adding one or more of potassium salts, ammonium salts, or mixtures thereof, in an amount of at least 5% by weight of the detergent product.
Patent CA-2403697-C (CA)
Inventor: TSAI JEN-HSIU
IPC: A47C27/10
Filed: 2002-09-17
Granted: 2005-09-13
Abstract: A self inflated air cushioned bed includes a base, multiple air units each provided with at least two air cells securely mounted on top of a substrate and at least one unidirectional valve mounted on the substrate to allow air to flow into the at least two air cells, and an expanding device received in each one of the at least two air cells in each of the multiple air units to maintain the at least two air cells in each of the air units to be expanded. When the at least two air cells of each of the air units are expanded due to the expanding device, the at least one unidirectional valve allows air to flow into the at least two air cells of each of the air units so that the air units are maintained inflated.
Patent CA-2405334-C (CA)
Inventor: CHEN COLIN C
IPC: F02B77/11
Filed: 2002-09-26
Granted: 2010-12-21
Abstract: An improved heat shield offers thermal insulation and reduced noise transmission for vehicular engine components, including exhaust manifolds. The structure has three layers: an outer structural metal layer, a center insulation layer to isolate heat and dampen noise, and an inner metal layer directly adjacent the shielded component for reflecting heat back to the shielded component. As disclosed, the shield has at least one edge portion defined by outwardly flared undulations or waves.  The waved edge minimizes impact of plastic deformation of the metal edges during manufacture of the shield, which tends to produce wrinkling at the edges, and creates undesirable stiffness. Finally, the edge boundary of the outer metal heat shield layer is folded over the edges of the insulation and inner metal layers to avoid any sharp edges, thus preventing injury to installers and reinforcing the heat shield structure to enhance useful life under vibration and heat conditions.
Patent CA-2408626-C (CA)
Inventor: YEH YUN-SIUNG TONY
IPC: C08L9/10
Filed: 2002-03-12
Granted: 2009-02-17
Abstract: The invention disclosed herein relates to an improved process for making elastomeric polyisoprene articles. In particular, the process of the invention is a system wich produces synthetic polyisoprene articles exhibiting tensile strength properties similar to that of solvent-based processes using natural rubber latex. The process comprises an accelerator composition at the pre-cure stage comprising a dithiocarbamate, a thiazole and a guanidine compound. In a preferred embodiment, the accelerator composition comprises zinc diethyldithiocarbamate (ZDEC), zinc 2-mercaptobenzothiazole (ZMBT) and diphenyl guanidine (DPG), in conjunction with a stabilizer, such as sodium caseinate, The invention also includes an elastomeric polyisoprene product made by the process, such as a surgeon's glove.
Patent CA-2409377-C (CA)
Inventor: STRAND FRANK
IPC: G05F1/10
Filed: 2001-05-23
Granted: 2007-10-02
Abstract: The invention relates to a magnetically influenced current or voltage regulator comprising a body (1) which is composed of a magnetisable material and provides a closed, magnetic circuit, at least one first electrical conductor (8) wound about the body of a first main winding (2) and at least one second electrical conductor (9) wound about the body of a second main winding (4). The winding axis (A2) for the main winding (2) is at right angl es to the winding axis (A4) for the control winding (4) with the object of providing orthogonal magnetic fields (H1, B1 and H2, B2 respectively) in the body (1) and thereby controlling the behaviour of the magnetisable material relative to the field (H1, B1) in the main winding (2) by means of the field (H2, B2) in the control winding (4).
Patent CA-2409511-C (CA)
Inventor: WILSON HO
IPC: H02H3/04
Filed: 2000-05-20
Granted: 2009-04-14
Abstract: The invention relates to a method for detecting accidental arcs (arc tracking) on a cable (1), especially on a cable of an aircraft electrical system.  According to said method, an alternating current signal (I(t)) that has been detected is sampled time-discretely and a trigonometric function (I(k)) imitating the alternating current characteristic is determined by interpolation of a number of sampling values (y(k)). The current alternating frequency (.omega.) is then derived from this trigonometric function. The result of a comparison of the current alternating current frequency (.omega.) and a set or reference frequency (.omega.') is used to determine the presence of an accidental arc (ISA,IGA) and a warning signal (Sarc) is optionally generated. A device which functions according to this method is advantageously integrated into a circuit-breaker (7) for the aircraft electrical system, so that the latter is equipped to detect and deactivate accidental arcs that occur on the electrical system cable (1).
Patent CA-2416032-C (CA)
Title: Optical fiber, slanted optical fiber grating, band rejection optical filter, gain equalizing optical filter for optical amplifier, and optical amplifier module
Inventor: NIWA ATUHIKO
IPC: G02B6/028
Filed: 2003-01-09
Granted: 2008-01-08
Abstract: Photosensitivity of an inner core (1a) which is disposed in a central portion of a core (1) is low. Photosensitivity of an outer core (1b) which is disposed close to a cladding (2) is high. In the cladding (2), photosensitivity of the inner cladding (2a) which is close to the core (1) is high and photosensitivity of an outer cladding (2b) which is outside of the inner cladding (2a) is low. A plurality of slant optical fiber grating having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.