baber/WOPTO huggingface dataset:
Patent CA-2227405-A1 (CA)
Inventor: NABORS JAMES K JR
IPC: F27B14/14
Filed: 1996-05-17
Abstract: A heated crucible apparatus (10) allows the adjustment of a thermal profile within a combustion chamber (12) surrounding the crucible (15) by introducing a sub-stoichiometric or a super-stoichiometric mixture of fuel and oxidant into the combustion chamber (12) and varying the oxidant flow for sub-stoichiometric or fuel flow for super-stoichiometric mixture downstream of the initial combustion to control the release of heat in defined areas within the combustion chamber (12). The apparatus includes an oxidant (54) and fuel (25) supply at the primary injection point (32) followed by secondary injection of the remaining oxidant supply at specific intervals to achieve the desired thermal profile. An oxidant pre-heating heat exchanger (51) and a cooling heat exchanger (49) for material exiting the crucible may be provided.
Patent CA-2227655-A1 (CA)
Title: The single-queue switch
Inventor: LEON-GARCIA ALBERTO
IPC: H04L49/901
Filed: 1998-04-03
Abstract: A new switching mechanism for fixed-length data packets such as ATM cells is disclosed that uses a novel buffering element to form a single physical queue in which all the data packets or cells are organized into logical queues destined for different output ports. The buffering element is a generalized sequencer circuit which allows flexible ordering of the cells in each logical queue to achieve any appropriate scheduling algorithm. This single-queue switch implements output buffered queueing and multicasting and achieves full buffer sharing. The number of input and output ports can vary independently without affecting the switch core. The size of the buffering space can be increased simply by cascading the buffering elements. This switch can be used as queue controller in RAM-based switches in which data packets are stored in a RAM memory and a fixed-length data unit represents the packet in the queue controller.
Patent CA-2229011-A1 (CA)
Title: Explosive detection screening system
Inventor: CORRIGAN COLIN D
IPC: G01N/
Filed: 1990-12-10
Abstract: An explosive detection screening used for the detection of explosives and other controlled substances such as drugs or narcotics.   The screening system detects the vapor and/or particulate emissions from the aforementioned substances and reports that they are present on an individual or object and the concentration of each substance detected.  The screening system comprises a sampling chamber for the collection of the vapor  and/or  particulate  emissions,  a  concentration  and analyzing system for the purification of the collected vapor and/or particulate emissions and subsequent detailed chemical analysis of the emissions, and a control and data processing system for the control of the overall system.
Patent CA-2231935-A1 (CA)
Inventor: SIMONS RICHARD W
IPC: G08B7/06
Filed: 1998-03-11
Abstract: A sensor provides a status signal indicating a condition of an operating system to the operating system's control system. The sensor has an inherent variable quantity such as resistance whose magnitude indicates the operating system status. The control system includes a user-operable switch which when actuated signals the microprocessor to determine the approximate value of the sensor's variable quantity. The magnitude of the variable quantity is then indicated by a signal comprising one or more beeps of sound or flashes of light. The number of beeps or flashes indicates the approximate present magnitude of the sensor's variable quantity. In a preferred embodiment, the control system comprises a microprocessor programmed to control the operating system and to perform most of the functions of the invention.
Patent CA-2235307-A1 (CA)
Title: Hybrid aircraft
Inventor: BOTHE HANS-JURGEN
IPC: B64C29/00
Filed: 1996-10-24
Abstract: A hybrid aircraft is taught having VTOL, R-VTOL and S-STOL capabilities. The aircraft has a lifting body hull (1) and four wing sections (20) arranged in tandem which are pivotally moveable about their neutral axis. Each wing section has mounted thereon a pivotal propeller-rotor (21) assembly for providing thrust substantially in a range between horizontal and vertical. The wings and propellers are integrated to the hull by an outrigger designed to be very stiff and to distribute forces from the wings and propellers to the hull. The hull is shaped to provide aerodynamic lift in an airstream and to facilitate construction by minimizing the number of panels of differing curvature required. The hull is formed of a pressure tensioned frame covered with semi-rigid panels, a lower cladding frame and bow and stem cladding nose cones. The semi-rigid panels covering the frame are formed of gas-tight and abrasion resistant laminate material and are connected to the frame by means of an interface rib and latch system. The frame is formed of a plurality of curved elongate segments arranged in series orthogonal to the long axis of the hull and connected by means of torsion members. A turbo-electric drive system can be used to drive the aircraft. An advanced hybrid aircraft is also described having about 8 to 12 high speed fans in place of the propeller-rotors.
Patent CA-2235655-A1 (CA)
Inventor: OGAWA YUKA
IPC: A61K8/34
Filed: 1998-04-23
Abstract: Oral compositions containing a water-insoluble noncationic bactericide showing improved stability with time and improved rheologic properties, and exerting excellent effects of eliminating dental plaque, preventing halitosis and eliminating tooth-staining substances. Addition of porous calcium carbonate to the oral compositions makes it possible to prevent the decrease in the bactericidal activity of water-insoluble noncationic bactericides such as triclosan and improve the stability thereof while exerting excellent effects of eliminating dental plaque, preventing halitosis and eliminating tooth- staining substances. Furthermore, addition of sodium carboxymethyl cellulose to the oral compositions makes it possible to improve rheologic properties and stability with time.
Patent CA-2236037-A1 (CA)
Inventor: BACH GARY M
IPC: E01C3/00
Filed: 1996-10-30
Abstract: A cell confinement structure (10) for confinement of material having a plurality of elongated plastic strips (14) in a side by side relationship bonded together in spaced-apart, limited areas (16) where the plurality of strips (14) are capable of being stretched in width to form a unitary web of cells (20). The strips forming walls of the cells with at least one of the cell walls having a plurality of apertures (34) in which each diameter is between about 3mm and 17mm. Preferably, each of the cell walls has a plurality of apertures (34) with the total area of the apertures in the cell walls being between 19 % and 28 % of cell wall area.
Patent CA-2236282-A1 (CA)
Title: Automatic gain control circuit
Inventor: KINOMURA MASAHIRO
IPC: H03G3/30
Filed: 1998-04-29
Abstract: An automatic gain control circuit of an amplifier 1 having  a  gain  control  function  is  provided  with  a signal-to-noise   detection  circuit   2   which  detects   a signal-to-noise ratio of an output signal and an AGC setting circuit 3 which sets the gain of the amplifier 1.   The AGC setting circuit 3 determines the AGC gain according to the level of an input signal and the signal-to-noise ratio detected by the signal-to-noise ratio detection circuit 2.  In a region where there is a large AGC gain and where the signal-to-noise ratio is reduced by the AGC circuit, the level of an output signal is increased so as to render the signal-to-noise ratio of the output signal constant.  Even if an input electric field is reduced by a fading phenomenon and if there is an increase in  the  AGC  gain,  there  is  prevented  a  decrease  in  the signal-to-noise ratio due to an increase in the noise floor stemming  from the  AGC circuit  itself,  thereby preventing deterioration of the receiving sensitivity of the automatic gain control circuit.
Patent CA-2241981-A1 (CA)
Title: Method of inhibiting photoaging of skin
Inventor: VOORHEES JOHN J
IPC: A61K31/4045
Filed: 1997-01-17
Abstract: Photoaging of undamaged skin due to UVB irradiation exposure is inhibited by administering an agent that inhibits at least one of (1) the activity of UVB irradiation inducible MMPs in the skin, (2) one or both of the transcription factors AP-1 and NF-.lambda.B or (3) at least one of the GTP binding proteins or kinases involved in the activation and/or production of jun or fos proteins that comprise AP-1; and topically administering said inhibitor to the skin prior to such exposure.
Patent CA-2242194-A1 (CA)
Title: Network protocol for wireless broadband isdn using atm
Inventor: EVANS ALLAN
IPC: H04L12/56
Filed: 1997-01-31
Abstract: A network protocol for the delivery of wireless broadband integrated services digital network (ISDN) using asynchronous transfer mode (ATM).
Patent CA-2244289-A1 (CA)
Inventor: HEUER VOLKMAR
IPC: H04L12/24
Filed: 1998-09-11
Abstract: A method of establishing logical connections in a synchronous communications network (SDH) comprising a plurality of at least partially interconnected network elements (NE1, NEn; CC1-CC3) and designed for the transmission of data packets containing a destination address involves monitoring destination addresses of the data packets to be transmitted, determining the traffic volume between the individual network elements (NE1, NEn; CC1-CC3) with the aid of the destination addresses, and determining an optimized configuration of logical connections based on the traffic volume and existing logical connections. In this manner, the communications network is adapted to the current traffic situation, and the transmission capacities of the network are utilized in the best possible manner. The monitoring is advantageously done in at least part of the network elements, while the determination of the traffic volume and    the optimized configuration is performed by a central management system (TMN).
Patent CA-2245301-A1 (CA)
Inventor: CASTOLDI ANDREA
IPC: G02B6/14
Filed: 1998-08-19
Abstract: A digital optical switch includes an input waveguide connected to a Y-shaped branching waveguide having two legs, each of the legs being connected to an output waveguide. Each output waveguide forms one waveguide of a directional coupler, the other waveguide of which has its output dissipated into the substrate. Electrodes are connected to voltage sources such that the switch is operative between two states. In the first state, transmission of optical energy is enhanced between the input waveguide and the first output waveguide and inhibited between the input waveguide and the second output waveguide. Coupling between the first output waveguide andthe other waveguide of its respective directional coupler is inhibited and coupling between the second output waveguide and the other waveguide of its respective directional coupler is enhanced. In the second state, transmission of optical energy is inhibited between the input waveguide and the first output waveguide and enhanced between the input waveguide and the second output waveguide. Coupling between the first output waveguide and the other waveguide of its respective directionalcoupler is enhanced and coupling between the second output waveguide and the other waveguide of its respective directional coupler is inhibited.
Patent CA-2245780-A1 (CA)
Title: Synthesis of stable nitrile oxide compounds
Inventor: PARKER DANE KENTON
IPC: C08K5/32
Filed: 1998-08-27
Abstract: Nitrile oxide compounds are extremely reactive toward multiple bonds in organic compounds and polymers.  This high level of reactivity allows for dinitrile oxides to cure (crosslink) olefin-containing polymers under very mild conditions.  This invention discloses a process for the synthesis of stable aryl nitrile oxides which comprises the sequential steps of (1) halomethylating a halomethyl group onto a substituted aromatic compound having at least one substituent group selected from the group consisting of alkyl groups, aryl groups, fused aryl groups, alkaryl groups, halogen atoms, alkoxy groups and nitro groups, wherein said halomethyl group is halomethylated onto a position that is ortho to at least one of the substituent groups on the substituted aromatic compound; (2) converting the ortho halomethylated-substituted aromatic compound into an ortho-substituted aromatic aldehyde by reacting the ortho halomethylated-substituted aromatic compound with a salt selected from the group consisting of sodium 2-nitropropane and potassium 2-nitropropane in a lower alcohol solvent; (3) converting the ortho-substituted aromatic aldehyde into an ortho-substituted aromatic oxime by reacting the ortho-substituted aromatic aldehyde with hydroxylamine; and (4) converting the ortho-substituted aromatic oxime into the ortho-substituted aryl nitrile oxide by reacting the ortho-substituted aromatic oxime with an aqueous sodium hypochlorite solution at a temperature which is within the range of about -5°C to about 20°C.
Patent CA-2246777-A1 (CA)
Inventor: SASAKI TAKASHI
IPC: B23K26/21
Filed: 1998-09-01
Abstract: An optical component assembling method,  in which a first metal housing (10) holding a first optical element and a second metal housing (20) holding a second optical element are made to abut against each other on joint surfaces (10b, 20b) thereof, and irradiated with a laser beam (31) so as to be fixedly welded with each other, characterized in that one of the metal housings overhangs  from the other of the metal housings,  and the  laser beam is  radiated  in an incident direction .theta. inclined to the overhanging metal housing side so as to perform spot-welding (30) on outer circumferences of the joint surfaces where the metal housings abut against each other, whereby the decrease of light-intensity at the time of assembly is suppressed to be extremely low.
Patent CA-2252383-A1 (CA)
Inventor: THOMAS KARL-WILHELM
IPC: F16L53/00
Filed: 1997-05-07
Abstract: The invention relates to a process for manufacturing individual pipe sections of a pipe system comprising a product pipe (1) and at least one duct (5) accompanying the product pipe (1), said product pipe (1) and said duct (5) being provided with an insulation (3) surrounded by a jacket pipe (2). The following procedural steps are proposed to produce practically any duct layout along the product pipe (1) in a simple and economical manner: (a) arrangement of at least one core (7) having at least the external contour of the duct (5) in such a manner on the outer surface of the product pipe (1) that the duct (5) formed by the core (7) is open with respect to the product pipe (1) at least in a linear manner along the length of the duct (5); (b) insertion of the unit comprising the product pipe (1) and the core (7) into the jacket pipe (2); filling of the free duct cross-section of the jacket pipe (2) with insulating material which can only flow when in the processing state.
Patent CA-2252590-A1 (CA)
Title: Pulsed operation control valve
Inventor: CHANDLER TRAVIS
IPC: F16K31/68
Filed: 1997-04-24
Abstract: A valve assembly (10) includes a refrigerant inlet port (18) and a refrigerant outlet port (19) having a restricted opening (15), with the inlet port opening at least 2 times larger than the restricted outlet port opening. The valve includes components for opening and closing the inlet port (18) in response to valve cavity pressure between the inlet and outlet ports. The larger inlet port (18) relative to the restricted outlet port (19) provides for rapid pressure buildup in the valve cavity (24) when the inlet port is open which, in turn, causes rapid closing of the inlet port. The valve (10) is capable of rapid cycling rates, highly effective for small refrigeration or cooling apparatus, as well as for controlling pressure in other applications requiring pressure regulation.
Patent CA-2253127-A1 (CA)
Title: Lighted mirror assembly
Inventor: MALCOMSON KIRK
IPC: B60R1/06
Filed: 1998-11-06
Abstract: A mirror assembly, such as is used for school busses and similar vehicles, includes a mirror head including a mirror surface and a housing. The mirror surface and the housing define a hollow interior. A light bulb is provided in the hollow interior. The housing is translucent so light from the bulb can be seen outside the housing. The light bulb can be electrically connected to various elements of the vehicle's electrical system, such as turn signals, flashers, and/or headlights.
Patent CA-2253228-A1 (CA)
Title: Disposable diaper changing pack
Inventor: FEYEN JEAN SANDRA
IPC: A61F13/15
Filed: 1997-05-20
Abstract: A distinctive composite article (20) has a longitudinal, length dimension (86) and a lateral, width dimension (88). The article includes a flexible outer shell portion (22) having a shell length (24) and a shell width (26). At least a portion of a flexible drape layer (28) is substantially affixed to the shell portion, and the drape layer has a drape width (32) which is larger than the shell width. Additionally, the drape layer may have a drape length which is larger than the shell length. The drape layer includes a first laterally extending fold line (38), a first longitudinally extending fold line (34) and at least a second longitudinally extending fold line (36). The longitudinally extending fold lines provide for a laterally-folded drape width (62) which is not more than the shell width. The drape layer may also include at least a second laterally extending fold line (40), and the laterally extending fold lines may also provide for a longitudinally-folded drape length (60) which is not more than the shell length. At least one removable, unit component (42) is contained and enveloped within the drape portion (28) when the drape portion is folded. A closure mechanism holds the shell portion in a closed-package condition which substantially envelops the drape portion when the drape portion is folded. An article opening means can selectively defeat the closure means to provide access to the unit component.
Patent CA-2253464-A1 (CA)
Title: Centrifugeuse de decantation
Inventor: LARSSON LARS-AKE
IPC: C02F11/12
Filed: 1997-05-02
Abstract: L'invention concerne une centrifugeuse de décantation, en particulier pour la centrifugation de boues, comprenant un tambour (1), un rotor (12) disposé à l'intérieur de celui-ci et équipé d'une vis hélicoïdale (14) pour l'alimentation des boues, une sortie pour les boues (11), une ouverture de rejet (5) et un dispositif de lavage rapide (16) pour effectuer un lavage rapide à contre-courant par rapport aux boues essorées. Le rotor (12) comporte, près des lames (15) de la vis hélicoïdale (14), des trous filetés permettant de monter les buses (17) du dispositif de lavage rapide (16). Selon le lavage requis, certains trous filetés ou des groupes entiers de trous filetés peuvent être fermés par des bouchons d'étanchéité (23), de sorte que les lavages rapides peuvent se faire en plusieurs étapes consécutives, certaines parties entre ces parties lavées n'étant pas soumises au lavage.
Patent CA-2253574-A1 (CA)
Title: Multi-lateral wellbore systems and methods for forming same
Inventor: DONOVAN JOSEPH F
IPC: E21B7/06
Filed: 1997-05-01
Abstract: The present invention provides multi-branched wellbore systems and methods for forming and utilizing such wellbores. An access wellbore is formed substantially in a non-producing formation. From the access wellbore are drilled one or more branch wellbores into producing formations and into non-producing formations. Additional branch wellbores may be formed from the access wellbore or the branch wellbores. Seals between the access wellbore and the production wellbores are formed outside the hydrocarbon-bearing formations. Flow control devices and other devices are installed outside the access wellbore, thereby utilizing the access wellbore primarily for transporting fluids during production of hydrocarbons. The distance between the access wellbore and any other desired formation, such as the producing formations, is determined during drilling of the access wellbore, preferably by utilizing acoustic sensors deployed in a drilling assembly. The distance between the access wellbore and the various formations is utilized for adjusting the drilling path of the access. The branch wellbores may be utilized for storing equipment, processing and/or treating fluids, compressing gas, and redirecting gas and water downhole to improve hydrocarbon production.
Patent CA-2256145-A1 (CA)
Title: Fluid bed system for cooling hot spent anode butts
Inventor: HUNI JEAN-PAUL
IPC: F28D13/00
Filed: 1998-12-16
Abstract: The invention relates to a system for cooling and reducing fluoride emissions from a hot, spent anode butt removed from an electrolysis cell. The system comprises an elongated fluidised bed cooling chamber comprising particles of alumina and conveyor means for transporting a hot, spent anode butt through the fluidised bed. A lower air distributor is provided for injecting fluidising air into the chamber to create the fluidised bed and an upper air distributor is provided which is adapted to direct fluidised particles into contact with the top surface of the hot anode butt, whereby the fluidised bed surrounds the hot anode butt and serves to simultaneously uniformly cool the hot anode butt and significantly reduce fluoride emissions from the hot anode butt.
Patent CA-2256363-A1 (CA)
Title: Terpolymerization
Inventor: POTGIETER IGNATIUS HENDRIK
IPC: C08F2/04
Filed: 1997-06-02
Abstract: A terpolymer of ethylene, 1-pentene and a further alpha olefin. The alpha olefin differs, as regards its total number of carbon atoms, by one or more unit from 1-pentene.
Patent CA-2256758-A1 (CA)
Title: Method of producing l-serine by fermentation
Inventor: HIBINO WATARU
IPC: C12N15/09
Filed: 1999-01-11
Abstract: L-serine is produced by cultivating in a medium a coryneform bacterium having L-serine productivity in which an activity of at least one of phosphoserine phosphatase and phosphoserine transaminase is enhanced, preferably, further having introduced therein a gene coding for D-3-phosophoglycerate dehydrogenase in which feedback inhibition by L-serine is desensitizied, allowing L-serine to accumulate in the medium, and collecting the L-serine from the medium.
Patent CA-2257854-A1 (CA)
Title: Process for the production of alkaline metal salts and earth alkali metal salts of aryloxy-c1-c4-alkaline carboxylic
Inventor: MERKLE HANS RUPERT
IPC: C07C59/70
Filed: 1997-06-05
Abstract: A process for the production of alkaline metal salts and earth alkali metal salts of aryloxy-C1-C4-alkane carboxylic acids by reacting the basic aryloxy-C1-C4-alkane carboxylic acids with alkaline metal bases or earth alkali metal bases in the melt, by extruding a mixture of the aryloxy-C1-C4-alkane carboxylic acid and an at least stoichiometric quantity of an alkaline metal base or an earth alkali metal base, which are partially or completely converted in the reaction conditions into volatile substances. The invention also concerns the extrudates thus obtainable and the use of the extrudates which contain an aryloxy-C1-C4-alkane carboxylic acid with herbicidal action to combat undesired plant growth.
Patent CA-2260591-A1 (CA)
Title: Fluid application for dust control with vertically oriented brush
Inventor: HULICSKO LESLIE
IPC: E01H1/05
Filed: 1999-02-01
Abstract: An improved method for the reduction of dust created by a surface brush is disclosed. Conventional methods of dust reduction involve the application of water to the dirt or debris to be cleaned up to reduce dust when swept. The method of the present invention consists of the application of water or other dampening fluid to the brush itself, rather than to the debris to be swept up. Dust is reduced, as is water consumption.