baber/WOPTO huggingface dataset:
Patent CA-2205602-A1 (CA)
Title: A system for decoding digital data using a variable decision depth
Inventor: CHEN JYUN-CHENG
IPC: H04L1/00
Filed: 1995-11-16
Abstract: In a digital data decoder such as a Viterbi algorithm decoder, digital data transmitted over a communications channel are estimated by a receiver using a variable decision depth technique to thereby improve bit error rate (BER) and channel estimation and to reduce decision delay. In the context of conventional trellis structures used for sequence estimation, the decoder assigns group flags to each state for each time interval being considered and stores those group flags along with corresponding accumulated path metrics associated with states. More specifically, from a just decoded state, flags from different groups, e.g., each group representing a color, number, etc., are assigned to successor states connected by a survivor path to the just decoded state. Each offspring state of a parent state is assigned the parent's group flag. The decoder detects where in the trellis all of the survivor states have the same group flag. At this point where all the flags agree, the decoder back traces through the trellis to the parent state having that same group flag. That parent state is then decoded as the estimate of the symbol(s). Thereafter, group flags are reassigned and the procedure repeated using this newly decoded state as the new just decoded state.
Patent CA-2206556-A1 (CA)
Inventor: STANKUS JOHN C
IPC: E21D21/00
Filed: 1997-05-29
Abstract: A mine roof bearing plate is disclosed having a planar  member having  a  topside,  an  underside  and  an elastically deformable domed portion extended downwardly from the  underside.   A central  section  at  the  outer extremity of the domed section defines a bolt hole.  The outer extremity of the domed portion includes a downwardly facing beveled annular bearing surface which mates with a spherical washer.  A method of tensioning a cable bolt is also disclosed including the steps of placing a  spherical washer over a first end of a cable bolt having a bolt head on the other end, placing the inventive mine roof bearing plate over the end of the cable bolt, inserting the cable bolt into a mine roof bolt hole, exerting pressure on the bolt head whereby the bolt head presses on the spherical washer  and  elastically  deforms  the  domed  portion, installing the cable bolt in the bolt hole and releasing pressure from the other end of the cable bolt whereby the domed  portion  substantially  reforms  to  its original configuration to exert tension on the cable bolt.
Patent CA-2208191-A1 (CA)
Title: Hydrocleaning of the exterior surface of a pipeline to remove coatings
Inventor: CHAPMAN GORDON R
IPC: B08B9/02
Filed: 1990-02-28
Abstract: Hydrocleaning apparatus for pipelines and the like includes a frame capable of advancing lengthwise of the pipeline, such frame carrying a plurality of liquid jetting modules which, in use, are disposed in an array around the pipeline surface to enable cleaning of the entire surface to be effected.  The frame can be opened up to allow the apparatus to be fitted to or removed from a continuous pipeline.  The frame arrangement and module mounting system are designed to provide good cleaning efficiency and proper orientation of the various modules in spite of pipeline irregularities including out-of-round conditions, uneven coating thicknesses and wrinkles.  A pivoting module mount helps to maintain cleaning efficiency in the case where thick coatings are being removed.  The frame drive wheels are disposed forwardly of the modules to avoid contamination of the cleaned surfaces by deposits that may build up on the wheels.  A shroud system connected to the modules prevents substantial escape of contaminating liquids and debris into the environment.
Patent CA-2209048-A1 (CA)
Title: Aqueous curable alkoxy silane/alkoxy silylated polymer compositions with extended shelf life
Inventor: POHL ERIC R
IPC: C08L83/06
Filed: 1996-10-07
Abstract: The present invention provides stable alkoxy silane containing compositions and methods for the preparation of a stable silane containing composition comprising: (I) a water insoluble or slightly soluble alkoxy silane; (II) emulsifier; (III) water, and (IV) water dispersible or emulsified polymer containing an alkoxy silane functional group. Also provided are two part systems such that an alkoxy silane emulsion comprising components (I)-(III) are combined and the component (IV) may be added upon use of components (I) to (III). Moreover, additional components (V) such as catalysts and pH buffers may be added. The compositions of the present invention are stable for at least about three to twelve months.
Patent CA-2209848-A1 (CA)
Title: Pharmaceutical and dietary composition containing sodium, potassium, magnesium and calcium ions and enzyme activators
Inventor: ZELCH NORBERT
IPC: A61P19/10
Filed: 1997-07-09
Abstract: There is disclosed a pharmaceutical or dietetic composition, comprising - sodium, potassium, magnesium and calcium ions, wherein at least sodium and potassium are present as carbonates and/or bicarbonates, and - enzyme activators, the mass ratio of K : Ca : Na : Mg being 0.1-100 : 0.05-80 : 0.03-50 : 1, the composition containing at least 40 mmol of alkaline or alkalizing ions and the composition, dissolved in water, having a pH of >= 7.5.
Patent CA-2211270-A1 (CA)
Inventor: BODARY SARAH CATHERINE
IPC: A61K31/505
Filed: 1997-07-23
Abstract: There are described cycloalkyl derivatives of the formula I R1-Y-A-B-D-E-F-G (I) in which R1, Y, A, B, D, E, F and G have the meaning indicated in the patent claims, their preparation and their use as medicaments. The compounds according to the invention are used as vitronectin receptor antagonists and as inhibitors of bone resorption.
Patent CA-2211782-A1 (CA)
Title: Optical tap coupler device
Inventor: CHENG YIHAO
IPC: G02B6/28
Filed: 1997-07-29
Abstract: An optical tap/coupler consists essentially of a two graded index lenses having a holographic beam splitter (HBS) in between. The HBS independent of polarization state and wavelength of an input light beam splits an incoming beam into at least two beams. The two beams are directed to two separate locations or ports at an end face of one of the graded index lenses thereby providing a main beam and a tap beam at an output of the device. The device is compact and can accommodate other optical components between the two graded index lenses.
Patent CA-2212342-A1 (CA)
Title: Tubular heating element with insulating core
Inventor: HALL BERTIE FORREST JR
IPC: H05B3/48
Filed: 1995-02-21
Abstract: A tubular heating element (10) having a metal tube (12) filled with a ceramic material (14). The metal tube has a near zero or slightly positive temperature coefficient of resistance. In an alternative embodiment, a wire (16) is coaxially supported within the metal tube (12) by the ceramic material (14).  This wire may be used to stiffen the tubular heating element (10) or may be used as an electrical conductor.
Patent CA-2212676-A1 (CA)
Title: Apparatus and method for measuring gravity
Inventor: CZOMPO JOSEPH
IPC: G01V7/16
Filed: 1997-08-08
Abstract: An apparatus and method of measuring gravity is described. The gravimetry apparatus includes two rigidly connected accelerometer triads and a global positioning system antenna defining a kinematic reference point. The apparatus has a specific layout where the nominal centre of the accelerometer triads and the kinematic reference point are collinear and the corresponding accelerometers of the two triads are parallel. In this gravimetry system, the lever arm correction is measured internally and the magnitude of gravity is calculated without the need for stabilized platforms or measurement of the spatial orientation of the gravimeter.
Patent CA-2213125-A1 (CA)
Inventor: WAHRMUND LESLIE A
IPC: G01V1/28
Filed: 1996-04-10
Abstract: A method of geophysical prospecting using seismic trace attribute analysis for formation characterization. More particularly, a method for selection of seismic traces which most accurately represent the subsurface formation in the area of a seismic survey is disclosed. In one embodiment, inflection-point interval analysis is used to account for effects of local surfaces.
Patent CA-2213238-A1 (CA)
Title: Stretching system for flexible planar materials
Inventor: FARR GREGORY C
IPC: B41F15/36
Filed: 1995-02-17
Abstract: A frame (10) is disclosed for stretching a printing screen (12) quickly and with uniform application of tension to the screen (12). The frame (10) includes a base portion (14) that defines a stretching plane in which the work piece is stretched. A swingable portion (30) of the frame (10) pivots relative to the base (14) and moves from a relaxed position in which the swingable portion (30) defines a plane that intersects the stretching plane, to a stretching position in which the swingable portion (30) is fixed in the stretching plate. A retainer (90) secures the edges of the screen (12) to the frame (10) such that the screen mesh is uniformly stretched as the swingable portion (30) is pushed into the stretching plane. A tension cable (140) extends through the frame (10) over a series of pulleys (142, 144, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166) spaced at several locations through each leg of the frame. Increased tension on the cables (140) pulls the swingable portion (30) of the frame (10) into the stretching plane.
Patent CA-2213908-A1 (CA)
Title: Tempering method
Inventor: SAHM MICHAEL K
IPC: C03B27/04
Filed: 1997-08-25
Abstract: A method of tempering an article is disclosed in which an article is heated so that the material making up the article is in an essentially stress-free state and the article thereafter is quenched and cooled. At the conclusion of the quenching, a stress pattern in initiated through the thickness of the article in which the midplane layer is in tension and the surface layers are in compression. This stress pattern is further developed during the cooling stage. The article is quenched by spraying the surfaces with a coolant, preferably comprising either liquid nitrogen or liquid air in the form of a two phase flow of liquid and vapor. The liquid is sprayed so that the surface tensile stress of the surface layers are not exceeded and the liquid does not accumulate on the surface layers as a film.
Patent CA-2214521-A1 (CA)
Title: Quinoline derivatives as immunomodulators
Inventor: MATSUO MASAAKI
IPC: A61K31/47
Filed: 1995-02-22
Abstract: Quinoline derivatives    of formula        (I), wherein        R1 is       hydrogen, halogen,       lower                    (see fig.I) alkyl,   etc., R2 is hydroxy or protected hydroxy,    R3 is lower     alkyl, etc., (a) is a                 (see fig.II)  (a)   (see fig.III)  (i) group of  formula (i) (in which R4    is  lower alkyl,    lower alkenyl,    lower alkoxy(lower)alkyl, cyclo(lower)alkyl or        lower alkoxy(lower)alkoxy(lower)-alkyl, and R5 is aryl which may have suitable substituent(s) or heterocyclic group), etc., R7 is hydrogen or halogen, R8 is hydrogen or lower alkyl, etc., and Z is O or S, and a pharmaceutically acceptable salt thereof which are useful as a medicament.
Patent CA-2215397-A1 (CA)
Title: Inhibition of tau-tau-association
Inventor: KLUG AARON
IPC: G01N33/68
Filed: 1996-03-25
Abstract: The present invention relates to novel methods for the detection of substances capable of modulating or inhibiting pathological tau-tau protein association and pathological neurofilament aggregation. The methods of the present invention are particularly useful in screening substances for the prophylaxis and treatment of Alzheimer's disease, motor neuron disease, Lewy body disease, Pick's disease and progressive supranuclear palsy. In addition, substances capable of selectively inhibiting pathological aggregates while preserving normal cytoskeletal function are described.
Patent CA-2215981-A1 (CA)
Title: Identification system for a lift installation
Inventor: SCHUSTER KILIAN
IPC: B66B1/16
Filed: 1997-09-22
Abstract: In this identification system for a lift installation a lift user (2) carries with him an information transmitter (5). The information transmitter (5) communicates individual data, for example the weight of the lift user (2), to a recognition device (6), which files the data in a data bank (7). Lift users without information transmitters, so-called unauthorised travellers, are detected with the aid of a load-measuring device (4), in that a comparator (8) compares the weight in a lift cage (1) with the weight identified by means of the information transmitter (5). In the case of agreement, the comparator (8) transmits a release signal (FGS) to a lift control, which dispatches the lift cage (1).
Patent CA-2216116-A1 (CA)
Title: Acid-resistant glass
Inventor: MORRIS GEOFFREY P
IPC: E01F9/04
Filed: 1996-03-04
Abstract: An acid-resistant glass article is provided comprising: about 25-45 wt.% SiO2;  about 20-35 wt.% TiO2; less than about 5 wt.% B2O3; about 15-40 wt.% of an alkaline earth modifier selected from the group consisting of B aO, S rO, and mixtures thereof, and no greater than about 25 wt.% of an alkali-metal oxide selected from the group consisting of Na2O, K2O, and mixtures thereof. The glass article is preferably in the form of a microsphere that is adapted for use as a retroreflective element in pavement markings.
Patent CA-2217056-A1 (CA)
Title: A surface controlled wellbore directional steering tool
Inventor: CHANCE JACK PHILIP
IPC: E21B47/18
Filed: 1996-04-01
Abstract: A tool for controlling azimuth and/or inclination in a wellbore and methods for utilizing the same is disclosed.      The tool generally comprises a freely rotating mandrel, for transmitting drilling forces, contained within two eccentric sleeves. The outer sleeve has an eccentric longitudinal bore that forms a pregnant or weighted side that seeks the lowside of the wellbore. Two gauge inserts or stabilizer shoes are provided on either side of the outer sleeve at ninety degrees to the pregnant housing. The inner sleeve has a further eccentric longitudinal bore that contains the freely rotating mandrel. The mandrel is attached to the drill string at one end and to the drilling bit at the other. The position of the inner sleeve may be controlled, at will from the surface, so that the eccentric is kept to one side of the outer housing, thus transmitting a fulcrum force to the bit and controlling the azimuth and/or inclination of the wellbore.      The pregnant housing contains drive means and assorted logic for controlling the position with respect to the pregnant housing of the eccentric bore of the inner sleeve.
Patent CA-2217569-A1 (CA)
Title: Materiaux en feuille revetus de polymeres d'acrylate et procede de fabrication
Inventor: CLINE DANIEL
IPC: D21H27/30
Filed: 1996-04-04
Abstract: Cette invention concerne des matériaux en feuille, lesquels se composent d'un substrat de matériau en feuille, tel qu'un film ou une feuille de papier, ayant un revêtement de base de polymère recouvrant une surface dudit substrat de matériau en feuille et adhérant à celui-ci. Ce revêtement de base comprend un polymère réticulé durci par rayonnement et dérivé d'au moins une composition de prépolymère d'acrylate déposée par métallisation et évaporation, laquelle composition possède un poids moléculaire variant environ entre 150 et 600. Une couche métallique est déposée de manière à recouvrir une surface du revêtement de base, une surface de la couche métallique étant ensuite recouverte d'un revêtement supérieur polymère adhérant à cette dernière. Le revêtement supérieur comprend un polymère réticulé durci par rayonnement et dérivé d'une composition de prépolymère d'acrylate déposée par métallisation et évaporation, laquelle composition possède un poids moléculaire variant environ entre 150 et 600 ainsi qu'un rapport entre son poids moléculaire et son nombre de groupes d'acrylate (poids moléculaire/Ac) variant environ entre 150 et 600. D'après un mode de réalisation de la présente invention, les matériaux en feuille en papier métallisé, ainsi produits présentent des caractéristiques d'apparence et de performances supérieures, et peuvent être découpés sur mesure en vue d'applications finales spécifiques. Il est par exemple possible de produire du papier métallisé possédant une apparence de surface très brillante et d'un glacé important et/ou une couche métallisée de haute qualité sans défauts ni trous d'aiguilles et/ou une surface extérieure hautement réceptive à l'impression.
Patent CA-2221047-A1 (CA)
Inventor: MURO NARAHIKO
IPC: B25B21/00
Filed: 1997-11-13
Abstract: The present invention relates to a successive screw feeder driver for feeding and driving screws successively into a plate such as, for example, wooden plate or metallic plate to fix the plate to a wall surface, a floor surface, or the like.  Particularly, the invention is concerned with a successive screw feeder driver capable of transmitting the operator's supporting and pushing force for a grip handle of the driver exactly in the direction of a rotational axis of a screw driving bit.
Patent CA-2222555-A1 (CA)
Title: Ear microphone with enhanced sensitivity
Inventor: MCCLENDON CHARLES L
IPC: H04R1/46
Filed: 1996-06-07
Abstract: An ear-mounted microphone device (10) configured for being supported in the ear. The microphone device (10) includes a microphone element (17) contained within a housing (25) which is configured at one end to be mounted at a user's ear canal. When the housing (25) is so mounted, the microphone element (17) is positioned closely adjacent to the user's head such that the housing (25) and the user's head cooperatively alter the sensitivity of the microphone so as to provide an enhanced directional orientation and sensitivity of the microphone element (17) toward the user's mouth toa greater degree that is provided when the housing and microphoneelement are not mounted at the ear canal, so as to enhance pickup of the user's voice. A speaker element (13) may be included within the ear device (10) and can be decoupled mechanically by a gasket (50) bridge between the housing and microphone so as to avoid feedback. This system can operate with full duplex and enable hands free communication and direct voice command by user through computer modems, telephone networks and other communication systems.
Patent CA-2223335-A1 (CA)
Inventor: LAFOND ANDRE
IPC: B65D47/08
Filed: 1997-12-03
Abstract: The combination of a urine container and a lid therefor, the lid having a top part with two recessed areas covered by a cap. The cap is formed of two sections hingedly connected to one another. By pressing one cap section in one recessed area, the other cap section is lifted from the other recessed area allowing the dispensing of urine through an opening in this recessed area. Closure of the cap is effected by pressing the lifted cap section downwardly over its recessed area to block the opening.
Patent CA-2228378-A1 (CA)
Title: Adn complementaire de cytidine deaminase utilise comme marqueur positif pouvant etre selectionne pour le transfert de gene, la therapie genique et la synthese de proteine
Inventor: ELIOPOULOS NICOLETTA
IPC: A61K48/00
Filed: 1996-07-19
Abstract: Séquence d'ADN codant la cytidine déaminase humaine insérée par technique génétique dans un vecteur d'expression eucaryote, qui permet l'expression de la cytidine déaminase dans les cellules de mammifères. L'expression de la cytidine déaminase confère une résistance aux analogues de nucléosides à cytosine, tels que l'arabinoside de cytosine, et peut être utilisée comme marqueur positif pouvant être sélectionné. L'expression de la cytidine déaminase dans les cellules protège celles-ci contre les effets toxiques des analogues de nucléosides à cytosine. Cette résistance trouve des applications dans la thérapie génique d'affections malignes, immunitaires et virales. Un vecteur d'expression bactérienne contenant ce gène peut être utilisé pour la production de cytidine déaminase en grandes quantités.
Patent CA-2228459-A1 (CA)
Title: Oxygen concentrator
Inventor: HENNEMAN JOHN W
IPC: B01D53/047
Filed: 1998-02-02
Abstract: The present invention addresses the technical problem of supplying oxygen-enriched air at low pressures with sufficient flexibility to allow a patient to be moved from one location to another. The gist of the solution is to provide low pressure oxygen-enriched air for use by a patient as well as high pressure oxygen-enriched air for filling a pressure cylinder. To that end, an apparatus is set forth for providing oxygen-enriched air at a first pressure and at a second pressure, the second pressure being greater than the first pressure. The apparatus comprises, in combination, a pressure swing adsorption system and a pressure intensifier.  The pressure swing adsorption system for enriching the oxygen content of air has a pressure of at least the first pressure. The pressure swing adsorption system is adapted to provide oxygen-enriched air to a first outlet at the first pressure and to provide oxygen-enriched air to a pressure intensifier at the first pressure. The pressure intensifier pressurizes the oxygen-enriched air and provides the oxygen-enriched air to a second outlet at the second pressure.
Patent CA-2231429-A1 (CA)
Title: Process for producing liquid metal and facilities for carrying out the process
Inventor: SCHENK JOHANNES-LEOPOLD
IPC: C21B11/00
Filed: 1997-07-09
Abstract: With a method for producing liquid metal from charging substances comprised of ore and of fluxes, the ore is directly reduced to sponge metal in at least one reduction zone (5, 7, 8), the sponge metal is melted along with fluxes in a melt-down gasifying zone (11) under the supply of carbon carriers and of an oxygen-containing gas and a CO- and H2-containing process gas serving as a reducing gas is produced which is fed into the reduction zone (5, 7, 8) and is reacted there and subsequently is withdrawn, wherein slagforming fluxes, in particular calcium carbonate, dolomite etc., by means of the process gas are calcined in a calcining zone (26') that is separate from the reduction zone (5, 7, 8) and melt-down zone (11). To be able to employ slagforming fluxes of any desired grain and without disturbances of the reduction process, the calcining zone (26') is connected in parallel to the reduction zone (5, 7, 8) as regards the material flow and the calcined fluxes are fed into the melter gasifier (10) directly.
Patent CA-2233166-A1 (CA)
Title: Hormone immunomodulated induction of mucosal immune responses
Inventor: MITCHELL WILLIAM M
IPC: A61K31/00
Filed: 1996-10-17
Abstract: The invention provides a method of inducing a mucosal immune response in a subject, comprising administering to the subject an amount of antigen-encoding DNA effective to induce a mucosal immune response complexed to a transfection-facilitating cationic lipid and an amount of vitamin D3. In the method of inducing a mucosal immune response, the antigen-encoding DNA can encode an antigen that is expressed on the surface of transfected cells and mimic critical elements of infection. DNA encoding the envelope glycoproteins of viral pathogens is used in the present method. Cationic lipids are bifunctional molecules consisting of one or more hydrophobic chains covalently linked to a cationic grouping in which there is coordination of positively charged groups with a negatively charged phosphate oxygen of the DNA chain forming an ionic charge complex. Two preferred examples of cationic lipids are DOGS (dioctadecylamidoglycylspermidine) and TEDBI (N,N,N',N'-tetramethyl N,N'-bis(2-hydroxyethyl)-2,3-dioleoyloxy-1,4-butanediammonium iodide). The invention also provides a composition, comprising an amount of DNA encoding an envelope antigen or envelope-associated antigen of a pathogen complexed to a cationic lipid. More specifically, the invention provides a composition, comprising an amount of DNA encoding an envelope antigen of HIV complexed to a cationic lipid.