baber/WOPTO huggingface dataset:
Patent CA-2174770-A1 (CA)
Inventor: FIELER ELEANOR ROTH
IPC: E21B37/00
Filed: 1994-12-08
Abstract: Procédé permettant d'améliorer l'efficacité de dissolution du tartre dans une formation contenant des intervalles productifs multiples (20, 22, 24, 26) où sont utilisés des liquides de densité variable. En premier lieu, une composition liquide permettant de solubiliser un dépôt de tartre de sulphate métallique alcalino-terreux est injectée dans un trou de forage (10) pour entrer en contact avec le tartre ou dans un intervalle de production de la formation. Ensuite, un second liquide de solubilisation des dépôts, d'une densité inférieure à celle du premier liquide, est injecté dans le trou de forage (10) entrant ainsi en contact avec des perforations supplémentaires (14) et un intervalle plus élevé. Ces liquides de solubilisation des dépôts ou tartre ayant des densités différentes peuvent rester en contact avec les perforations (14) et les intervalles de production (20, 22, 24, 26) et communiquent avec eux pendant un temps suffisamment long pour solubiliser les dépôts et enlever les dépôts des perforations (14) et des intervalles de production (20, 22, 24, 26) à deux niveaux différents.
Patent CA-2175353-A1 (CA)
Title: Polymers of alkyl-1-vinylimidazoles
Inventor: SCHADE CHRISTIAN
IPC: C11D3/00
Filed: 1994-11-23
Abstract: Polymers of alkyl-1-vinylimidazoles and processes for the production thereof by the radical polymerisation of monomer mixtures comprising: (a) 10 to 100 wt. % at least one alkyl-1-vinylimidazole and (b) 0 to 90 wt. % 1vinylpyrrolidone, 1-vinylcaprolactam, 1-vinyltriazole, 1-vinylimidazole, 1vinyloxazolidinone or mixtures thereof, (c) 0 to 30 wt. % other monoethylenically unsaturated monomers and (d) 0 to 10 wt. % a monomer containing at least 2 monoethylenically unsaturated double bonds, in water, and at least one C1-C4 alcohol or mixtures thereof in the presence of polymerisation regulators. Also disclosed is the use of polymers, at least 10 wt. % of which is an alkyl-1-vinylimidazole incorporated in the polymer, as an additive to detergents to prevent colour transfer during the wash.
Patent CA-2176592-A1 (CA)
Title: Radial styrene-isoprene-butadiene multi-armed block copolymers and compositions and articles containing block copolymers
Inventor: TANCREDE JEAN M
IPC: C09J7/02
Filed: 1994-11-21
Abstract: The invention is drawn to radial block copolymers of the formula: (pS-pI-pBnX), wherein pS is polystyrene, pI is polyisoprene, pB is polybutadiene, X  is the residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is a number greater than or equal to 3 representative of the number of branches appended to X; pressure sensitive adhesive compositions comprising such radial block copolymers and articles of manufacture produced therefrom. The pS component of the radial block copolymers of this invention comprise from about 14 to about 24 parts per 100 parts by weight of the radial block copolymer; the molecular weight (as polystyrene equivalent) of the radial block copolymer is between about 200,000 to about 400,000; and the weight amount of polybutadiene in the pI-pB segment is less than 50 weight percent.
Patent CA-2180627-A1 (CA)
Title: Reversible hydraulic drive apparatus
Inventor: ROGALSKY DOUGLAS KEITH
IPC: A01D41/14
Filed: 1996-07-05
Abstract: A hydraulic drive apparatus for example for driving the header of a combine harvester includes a pump, at least one motor driven by the pump, a reservoir in which the hydraulic fluid is cooled and degasified and a hydraulic circuit connecting the elements. The pump is driven by a shaft of the combine which can be reversed for short periods of time for discharging blockages. The hydraulic circuit is arranged with check valves so that when operating in the normal forward condition it operates in open circuit arrangement including the reservoir. When operating in the reverse condition, the reservoir is bypassed and the fluid is directed in closed circuitcondition from the pump through the motor and back to the pump. This allows the drive apparatus to accommodate the necessary reverse condition for short periods of time using a simple hydraulic circuitry rather than the conventional mechanical drive arrangements.
Patent CA-2181491-A1 (CA)
Title: Ground fault circuit interrupt system including auxiliary surge suppression ability
Inventor: GERSHEN BERNARD
IPC: H02H3/33
Filed: 1996-07-18
Abstract: A ground fault circuit interrupt system with auxiliary surge suppression ability is provided which includes line-side system, phase, neutral and ground terminals electrically connectable to phase, neutral and ground terminals of an AC source and load- side system, phase, neutral and ground terminals electrically connectable, respectively, to phase, neutral and ground terminals of an electrical load. The system includes a ground fault circuit interrupter including line- and load-side phase and neutral ports for electrical connection to the line-side system, phase and neutral terminals for controlling a state of conduction of AC between the source and electrical load in accordance with a detection of an interrupt condition. A relay switch is also included which has a relay coil and phase and neutral contacts such that line and load ends of the phase contact are electrically connected, respectively, to a GFCI load-side phase port and load-side system, phase terminal, line and load ends of the neutral contact are electrically connected, respectively, to a GFCI load-side neutral port and load-side system, neutral terminal; and the relay coil is electrically coupled between the load ends of the phase and neutral contacts for controlling said contacts in response to the interrupt condition. First second and third transient voltage surge suppressors electrically connected between the line- side system, phase and neutral terminals, phase and ground terminals and neutral and ground terminals for transient voltage surge suppression protection.
Patent CA-2182176-A1 (CA)
Title: Thermal-insulation/thermal collector assembly
Inventor: ASCHAUER JOHANN
IPC: F24J2/40
Filed: 1995-01-27
Abstract: Described is a combined thermal-insulation/thermal-collector assembly for the outside walls or roofs of buildings. The assembly has a heat-insulating layer which is transparent to solar radiation and is designed with a transparent struc-ture, the heat-insulating material including a multiplicity of adjacent channels disposed in essentially the same direction as the flow of heat. The heat-insulating layer is made up of elements which are thin relative to the thickness of the layer. The channels running across the heat-insulating layer are open, have an essentially uniform diameter and thus form a transparent structure.
Patent CA-2182919-A1 (CA)
Inventor: ROBISON MILAN W
IPC: B27L1/12
Filed: 1996-08-08
Abstract: Flail apparatus for debarking/delimbing wood products traveling through a debarking station wherein at least one of the flails comprises an axially extending member having axially rotatable chain supporting elements with an array of flexible flailing chains.  At least one of the flailing chaine incorporates a first, radially extending link, received on one of the elements, which is not radially removable from the element.  The flailing chain further incorporates a link structure configured to be radially non-removably attached to the first link.  The first link and link structure are configured to permit the link structure to be removable from the first link and a replacement to be received thereon when the link structure is positioned angularly to the said radial direction of extent of the first link.
Patent CA-2183350-A1 (CA)
Inventor: BRANCA PHILLIP A
IPC: B29L23/00
Filed: 1994-10-14
Abstract: In the present invention a blend of resin composition and blending technique is optimized to provide a desired balance of node size and fibril length with the additional property of thermal stability in the resulting stretched material. The stretched blend can be described as a polytetrafluoroethylene porous material having a microstructure of nodes in-terconnected by fibrils in which the mate-rial comprises a blend of two different poly-tetrafluoroethylene, one polytetrafluoroethy-lene being a homopolymer of tetrafluoroethy-lene and the other polytetrafluoroethylene be-ing a modified polymer of tetrafluoroethylene.
Patent CA-2184603-A1 (CA)
Inventor: SAHOO PURUSOTTAM
IPC: C23C4/12
Filed: 1995-03-01
Abstract: On modifie des appareils de projection thermique connus pour en obtenir des revêtements bruts par projection thermique. Ces appareils de projection thermique produisent un courant de plasma qui passe par un ajutage pour être finalement appliqué sur la surface d'un substrat. En pénétrant dans l'ajutage, ce courant de plasma traverse une zone de refroidissement en forme de passage, puis une zone d'accélération de plasma définie par un passage étroit qui aboutit à une zone de confinement de plasma et de particules permettant l'éjection du matériau depuis un tel appareil. Le passage étroit de l'appareil est refroidi et le matériau poudreux à appliquer à l'aide de l'appareil est introduit dans le courant de plasma le long de ce passage étroit refroidi. Pour chauffer (ou faire fondre) et accélérer de manière appropriée des particules de poudre de MCrAlY en vue de leur application à un substrat devant recevoir ce revêtement de projection thermique, le rapport du passage initial (de refroidissement du plasma) au passage étroit (d'accélération du plasma) descend d'une valeur plus classique d'environ 4 à 1 à 2 à 1 ou moins.
Patent CA-2187258-A1 (CA)
Title: Anti-sway friction pads for trailer hitch
Inventor: KASS JOHN J
IPC: B60D1/32
Filed: 1996-10-07
Abstract: A friction pad assembly for supporting a spring bar of a weight distributing hitch on a trailer includes a pad of high friction material and a mounting bracket. Preferably the friction pad provides a coefficient of friction of at least 0.35.      The bracket is preferably L-shaped and includes a projecting flange for protecting an edge of the pad held on the bracket. A fastener, such as self tapping screws, may be used to secure the bracket and pad to the trailer.
Patent CA-2194464-A1 (CA)
Title: Extrusion apparatus and method and extruded thermoplastic polymer
Inventor: JACK RAYMOND LESLIE
IPC: B29C48/08
Filed: 1995-08-03
Abstract: The use of chitosan and a polysaccharide immobilized thereto selected from heparin, heparan sulphate, chondroitinsulphates and dextran sulphate for the manufacture of an agent capable of providing stimulated regeneration of hard tissue; a process for stimulating regeneration of hard tissue in connection with so-called osseointegration; and implant intended for integration into hard tissue, particularly bone tissue.
Patent CA-2194694-A1 (CA)
Title: Pyrido[3,2,1-i,j][3,1]benzoxazine derivatives
Inventor: HALLENBACH WERNER
IPC: C07D498/06
Filed: 1995-06-28
Abstract: The present invention relates to novel pyrido¢3,2,1-i,j!¢3,1!benzoxazine derivatives of the formula (I) in which R1 is hydrogen or C1-C4 alkyl possibly substituted by hydroxy or halogen; R2 is hydrogen or methyl independently of R1; R3 is hydrogen or C1-C4 alkyl; R3' is hydrogen or methyl; R4 is hydrogen, alkyl with 1 to 4 carbon atoms, possibly substituted by hydroxy, methoxy, amino, methyl amino or dimethyl amino or (5-methyl-2-oxo-1,3-dioxol-4-yl)-methyl; X1 is hydrogen or halogen; Z is radicals of the structures ((a), (b), (c)) in which R7 is hydrogen, hydroxy, -NR10R11, hydroxy methyl or -CH2-NR10R11, carboxyl, methoxy carbonyl or ethoxy carbonyl, where R10 is hydrogen, possibly hydroxy-substituted C1-C3 alkyl, alkoxy carbonyl with 1 to 4 C atoms in the alkoxy part or C1-C3-acyl, and R11 is hydrogen or methyl; R8 is hydrogen, straight or branched chained C1-C3 alkyl or cyclopropyl; R9 is hydrogen or methyl; R6 is hydrogen or methyl; R5 is hydrogen, methyl or radicals of the structures -CH=CH-CO2R5', -CH2-CH2-CO2R5', -CH2-CO-CH3, -CH2-CH2-CN; R5' is methyl or ethyl; and B is -CH2-, O or a direct bond, their production and use for the therapy or the prevention of bacterial infections.
Patent CA-2195480-A1 (CA)
Title: Nucleic acid amplification method using a modified nucleoside, and detection of the amplification product using antibodies
Inventor: NIVELEAU ALAIN
IPC: C12Q1/6804
Filed: 1995-07-21
Abstract: A nucleotide sequence amplification method wherein a polynucleotide containing the sequence is contacted with oligonucleotide primers, nucleoside triphosphates and/or deoxynucleoside triphosphates containing the various purine and pyrimidine bases needed to synthesise the amplification product, and an enzyme system having DNA polymerase and/or RNA polymerase and/or reverse transcriptase activity, under conditions enabling the sequence of interest to be amplified in a per se known manner. One of the nucleoside triphosphates and/or deoxynucleoside triphosphates is present either in a modified form or in both a modified form and an unmodified form, and, in said modified form, the purine or pyrimidine base is substituted by at least one methyl, hydroxymethyl or acetyl grouping.
Patent CA-2200238-A1 (CA)
Title: Photo induced discharge characteristics (pidc) controller
Inventor: MARA ROBERT M
IPC: G03G15/043
Filed: 1997-03-18
Abstract: An apparatus for monitoring and controlling electrical parameter of an imaging surface, the monitoring controlling apparatus including a patch generator for recording a first control patch at a first voltage level and a second control patch at a second voltage level on the imaging surface; electrostatic voltmeter for measuring voltage potentials associated with said first control patch and second control patch. A processor, in communication with said patch generator, calculates the electricalparameters of the imaging surface from the measured voltage potentials from said first and second control patches. The processor determines a deviation between the calculated electrical parameters values and setup values. Then, the processor produces and sends a feedback error signal to said patch generator if said deviation exceed a threshold level. The patch generator records a third control patch at a third voltage level on the imaging surface upon reception of said error signal The ESVsenses said third control patch. The processor calculates the electrical parameters of the imaging surface from the measured voltage potential of the third control patch and determines a correction factor. The charging device, exposure system and developer are adjusted in accordance to said correction factor
Patent CA-2200780-A1 (CA)
Title: Fabrics composed of ribbon-like fibrous material and method to make the same
Inventor: BLANEY CAROL ANN
IPC: D04H3/14
Filed: 1995-08-11
Abstract: A method of making a flexible fabric composed of a fibrous matrix of ribbon-like, conjugate, spun filaments. The method includes the following steps: 1) providing a fibrous matrix composed of individual, spun filaments bonded at spaced-apart bond locations, the filaments themselves being composed of: (i) a core formed of at feat one low-softening point thermoplastic component; and (ii) a sheath formed of at least one high-softening point component; and 2) applying a flattening force to the fibrous matrix to durably distort the core of individual filaments into a ribbon-like configuration having a width greater than its height so that: (i) the individual filaments are substantially unattached between the spaced-apart bond locations, and (ii) the width of individual filaments is oriented substantially in the planar dimension of the fabric. Also disclosed is a flexible fabric composed of a fibrous matrix of ribbon-like, conjugate, spun filaments joined at spaced-apart bond locations.
Patent CA-2202978-A1 (CA)
Title: Nmr logging of natural gas in reservoirs
Inventor: TUTUNJIAN PIERRE NAZARETH
IPC: G01R33/20
Filed: 1995-10-19
Abstract: A method is disclosed to determine a characteristic of a porous earth formation containing hydrocarbon gas, the earth formation being penetrated by a wellbore. The method comprises the steps of obtaining an NMR log using a recovery time that is equal to or greater than the longitudinal relaxation time of the hydrocarbon gas, and determining from the NMR log a distribution of transverse relaxation times including transverse relaxation times attributable to the hydrocarbon gas. Subsequently at least one of the pore size of the earth formation and the pore volume that is occupied by hydrocarbon gas is estimated.
Patent CA-2204682-A1 (CA)
Title: Excited base conveyor system
Inventor: SLEPPY PAUL I
IPC: B65G27/08
Filed: 1997-05-07
Abstract: A base excited vibratory trough conveyor includes a trough mounted on leaf springs to a base which is excited by a linear vibratory drive. The vibratory drive produces a linear force which is oriented to be perpendicular to the springs, and the linear force is adjusted to equal the reaction force of the springs on the base during the desired stroke. Such balancing results in no stroke or movement of the base. A more lightweight base can thus be used without requiring that the base center of gravity be aligned along the center of gravity of the conveyor and the trough, or that the base be excessively heavy.
Patent CA-2205218-A1 (CA)
Title: Improved methods for h-phosphonate synthesis of mono- and oligonucleotides
Inventor: BHONGLE NANDKUMAR
IPC: C07H19/20
Filed: 1996-10-18
Abstract: New methods of synthesizing mono- and oligo- nucleotide H-phosphonates are disclosed. The methods comprise contacting a mononucleoside with phosphonic acid and benzoyl anhydride or propane phosphonic acid anhydride to yield the corresponding mononucleoside H-phosphonate. Preferably a catalytic amount of triphosgene is also used. A similar procedure can be used to couple a first mononucleoside to a second mononucleoside or to an oligonucleotide, the method comprising contacting, in the presence of benzoic anhydride or propane phosphonic acid anhydride and, preferably, when benzoic anhydride is used, a catalytic amount of triphosgene, a mononucleotide or oligonucleotide having a free 5' hydroxyl with a mononucleoside having a 3' hydroxyl-bearing phosphorous moiety (preferably H-phosphonate).
Patent CA-2206158-A1 (CA)
Title: Device for levelling a particulate material web
Inventor: GUSTAVSSON LENNART
IPC: B27N3/18
Filed: 1995-11-24
Abstract: A device for levelling a particulate material web (3), such as a wood-fibre mat laid out on a wire (2) and intended for the production of wood-fibre boards, the material web being moved in relation to the device, comprises a rotary shaft (4) and a plurality of elliptic discs (6) mounted thereon. The shaft (4) is adapted to be arranged transversely of the direction of movement of the material web (3) and extends through the centres of the discs (6). The discs (6) are mounted at an axial distance from one another so as to rotate with the shaft (4). About their minor axes, the discs (6) are so inclined in relation to the shaft (4) as to have a circular axial projection.
Patent CA-2213188-A1 (CA)
Title: Treatment of vascular thrombosis and restenosis with inhaled nitric oxide
Inventor: ZAPOL WARREN M
IPC: C07D473/08
Filed: 1996-02-08
Abstract: Disclosed are methods of treating, inhibiting or preventing vascular thrombosis or arterial restenosis in a mammal. The disclosed methods include causing the mammal to inhale a therapeutically-effective concentration of gaseous nitric oxide (NO). Also disclosed are methods that include the administration of the following types of agents in conjunction with inhaled nitric oxide: compounds that potentiate the beneficial effects of inhaled nitric oxide, and antithrombotic agents that complement or supplement the beneficial effects of inhaled nitric oxide. The figure is a graph comparing the intima/media ratio in control rats, rats exposed for two weeks to 20 ppm NO, and rats exposed for one week to 80 ppm NO, followed by one week of breathing air. The asterisk indicates values significantly differing from baseline (p < 0.05).
Patent CA-2214544-A1 (CA)
Title: Method and device for optical phase modulation by means of semiconductor amplifiers
Inventor: WANDERNOTH BERNHARD
IPC: H04B10/50
Filed: 1997-09-19
Abstract: The instant invention relates to a method and a device for optical phase modulation by means of semiconductor amplifiers. In this case an optical semiconductor amplifier comprises optical waveguides 10, which rise over its length and change in its lateral extension, so that light supplied at the optical inlet 11 undergoes an amplification on its way to the optical outlet 12.
Patent CA-2215920-A1 (CA)
Inventor: KUMAR SANJAY
IPC: A61P31/04
Filed: 1997-11-18
Abstract: p38beta2 polypeptides and polynucleotides and methods for producing such polypeptides by recombinant techniques are disclosed. Also disclosed are methods for utilizing p38beta2 polypeptides and polynucleotides in the design of protocols for the treatment of central nervous system disorder such as senile dementia of the Alzheimer's type (SDAT), mutiple sclerosis, cerebral malaria, stroke, head trauma and spinal cord injury; cardiovascular diseases such as restenosis and atherosclerosis; inflammatory diseases such as Adult Respiratory Disease Syndrome (ARDS), Rheumatoid arthritis, Osteoarthritis, Inflammatory Bowel Disease (IBD), psoriasis, dermatitis, asthma; and other such diseases or conditions associated with dysregulated or excess cytokines such as osteoporosis, sepsis due to surgical or traumatic incident, chronic renal failure, AIDs, cachexia and autoimmune conditions such as lupus erthyromatosis, host graft rejection and graft verus host disease, among others, and diagnostic assays for such conditions.
Patent CA-2216010-A1 (CA)
Title: Dispositif a retard variable pour signaux optiques
Inventor: DE BOUARD DOMINIQUE
IPC: H04J14/02
Filed: 1997-10-06
Abstract: Afin de réduire son temps de commutation, le dispositif à retard (Dx) comprend un coupleur (C) et un multiplexeur (M) comportant n entrées (B1-Bn) calées respectivement sur n longueurs d'onde (.lambda.1-.lambda.n) distinctes. Des entrées (B2-Bn) du multiplexeur (M) sont couplées respectivement à des sorties (A2-An) du coupleur (C) par l'intermédiaire de dispositifs de conversion de longueur d'onde (K2, Ki, Kn) et de lignes à retard (L2, Li, Ln) toutes différentes. Chaque dispositif de conversion (Ki) possède une fonction de porte optique amplificatrice (G) et fournit à l'entrée correspondante (Bi) du multiplexeur (M) une onde portée par la longueur d'onde (.lambda.i) associée à cette entrée (Bi). L'invention concerne également un dispositif de synchronisation de canaux d'un multiplex de longueurs d'onde utilisant le dispositif à retard variable. Application notamment à la synchronisation de paquets optiques dans un réseau optique commuté.
Patent CA-2216385-A1 (CA)
Title: Audio bass speaker driver circuit
Inventor: GOLDFARB BARRY S
IPC: H04R5/04
Filed: 1996-03-27
Abstract: A bass audio circuit includes a first filter network which receives left and right channel input signals and produces two filtered signals by attenuating frequencies in the input signals above a first cutoff frequency. The two filtered signals are summed to create a first monophonic signal. A second filter network produces attenuates frequencies in either the input signals or in the first monophonic signal that are above a second cutoff frequency which is lower than the first cutoff frequency. The signals from the second filter network are combined and passed through a phase inverter to derive a second monophonic signal. An output stage individually amplifies the two monophonic signals which then either are applied to a dual voice coil woofer, or are electrically summed and applied to a single voice coil woofer. Alternatively, the two monophonic signals are first summed and applied to a single channel amplifier which drives a single voice coil woofer. This audio circuit adjusts the relative emphasis of psychoacoustic elements of the bass signals to accurately emulate the bass performance of the sound being projected and enhances performance of a woofer driver by limiting extremely low frequency displacement.