baber/WOPTO huggingface dataset:
Patent CA-2112325-A1 (CA)
Title: Hue control without chrominance demodulation for pal
Inventor: CIARDI JOHN J
IPC: H04N9/64
Filed: 1993-12-23
Abstract: Abstract of the Disclosure A hue control circuit for adjusting the color phase of a composite PAL television signal without demodulating the chrominance component of the composite PAL television signal uses a polyphase interpolator (14) to change the phase of the modulated chrominance component. A set of coefficients corresponding to a desired hue adjustment is applied to the polyphase interpolator. A hue coefficient address circuit (18) addresses a coefficient memory (16) containing a plurality of sets of coefficients, the sets being in complementary pairs. During each horizontal blanking line interval for a given desired hue adjustment the hue coefficient address circuit swaps the sets of coefficients between the complementary pair defining the desired hue adjustment in synchronization with the alternating sign of one of the color difference components of the modulated chrominance component on a line by line basis. The adjusted modulated chrominance component is combined with the luminance component, suitably delayed, to produce an output composite PAL television signal with the desired hue adjustment.
Patent CA-2112395-A1 (CA)
Title: Cytosine deaminase negative selection system for gene transfer techniques and therapies
Inventor: MULLEN CRAIG A
IPC: A61K31/505
Filed: 1992-06-30
Abstract: The present invention relates to a system comprising a modified bacterial gene for cytosine deaminase that has been engineered into a eukaryotic expression vector and the expression of the gene by murine fibroblasts. The present invention further relates to methods, gene therapies and vaccines that employ the negative selectable marker, cytosine deaminase, which has the ability to produce a toxic antimetabolite 5-fluorouracil from 5-fluorocytosine.
Patent CA-2113223-A1 (CA)
Inventor: NAGAOKA TADAYOSHI
IPC: B01D39/12
Filed: 1994-01-11
Abstract: A  multi-layer  composite screen having filters of  a plurality  of  layers  superposed one  upon  another  is provided.  Each  filter of the plurality of  layers  has wires of a substantially triangular or trapezoidal cross section  arranged  in  parallel to one  another  with  a continuous   slit  of  a  substantially  V-shaped  cross section being formed between respective adjacent  wires, said   slit  widening  increasingly  inwardly  from  the surface  of the screen.  The wires of one filter of  the respective adjacent filters cross the wires of the other filter and the respective adjacent filters are fixed  to each  other  at  crossing  points of the  wires  of  the respective filters.  In one aspect of the invention, the wires  are formed with linear projections  extending  in the longitudinal direction of the wires which facilitate electrical  welding  of  the  filters  of  the  adjacent layers.
Patent CA-2114933-A1 (CA)
Title: Insulative plastic composite structure
Inventor: PAQUET ANDREW N
IPC: B32B27/20
Filed: 1992-08-03
Abstract: Disclosed is a coextruded, insulative, composite structure of adjacent, alternating first and second layers wherein the first layer comprises a plastic foam and second layer of a plastic material containing a quantity of carbon black sufficient to reduce the thermal conductivity of and to enhance the insulating performance of the composite structure. Incorporation of the carbon black into the plastic material layers allows an insulative foam structure to be made while avoiding or reducing serious processing problems encountered when incorporating carbon black into plastic foams.  Further disclosed is a process for making the above composite structure. Further disclosed is a composite plastic flow melt expandable to form the above composite structure.
Patent CA-2115372-A1 (CA)
Title: Fall-Arrest Safety Anchorages
Inventor: FEATHERS LEONARD J
IPC: A62B1/10
Filed: 1991-12-19
Abstract: A fall-arrest safety anchorage has a safety line drum (10) and braking means assembled to a spine plate (1).  The braking means comprises a rotatable brake component (2) and fixed brake components (1,7) one of which is constituted by such spine plate.  The rotatable brake component (2) constitutes the driven member of a centrifugal clutch comprising coupling elements (17) which are mounted on the drum and and become centrifuged into engagement with abutments (16) on said rotatable brake element if the unwinding speed of the drum exceeds a certain value.  The rotation of the brake component (2) takes place against a frictional resistance imparted by friction rings (5,6) which are sandwiched under pressure between that brake component and the fixed brake components (1,7).  The spine plate (1) is constituted as a said fixed brake component.
Patent CA-2115898-A1 (CA)
Title: System spotter for weightlifters
Inventor: KALLIOS DEMETRIOS
IPC: A63B21/078
Filed: 1994-02-17
Abstract: A spotter system is disclosed herein for assisting a weightlifter to safely exert a maximum effort during a weightlifting procedure.  The system includes a frame for removably supporting a weight arrangement comprised of either free or track weights.  The frame further supports a pneumatic lift which includes cables secured at one end to the barbell and at their opposite ends to a pulley.          Via a chain drive from the pulley, an intermediate wheel is moved which, in turn, pivots a lever arm.  The lever arm is attached at one end to a piston and cylinder assembly that offers less resistence to the users exerted effort to raise the barbell.  Control of the resistence is effected by body limb activation of positive or negative switches coupled to the piston and cylinder assembly which further includes an air compressor, gages and relief valves.
Patent CA-2118846-A1 (CA)
Title: Drive mechanism for crawler tracks
Inventor: HILGERS LAWRENCE C
IPC: B62D55/12
Filed: 1994-03-11
Abstract: A tumbler drive mechanism having a rotatable tumbler body mounted on a shaft and a plurality of tumbler lugs removably mounted on the tumbler body.  The shaft has a longitudinal axis about which it and the tumbler rotate.     The tumbler body includes a center drum and a plurality of circumferentially spaced apart radially projecting drive flanges.  Each one of the plurality of tumbler lugs is mounted between and in engagement with two adjacent ones of the plurality of drive flanges.  Each of the tumbler lugs engages the shoe lugs of a crawler track as the tumbler body rotates to drive the crawler track.  The tumbler lug is mounted on the tumbler body at a selectively variable radial distance from the axis of the tumbler body.  The radial distance at which the tumbler lugs are mounted on the tumbler body is accomplished by providing one or more shims positioned between the lug and the tumbler body.
Patent CA-2121669-A1 (CA)
Title: Plastic container with a completely sealed handle
Inventor: FOSS KEVIN A
IPC: B29C49/48
Filed: 1994-04-19
Abstract: A plastic container for holding liquids, such as syrup, which has a hollow handle completely sealed from the bottle's exterior and interior. The bottle results from blow molding an extruded thermoplastic parison into an unfinished bottle which has a channel running between the interior of the bottle and the hollow space defined by the handle. The air pressure to form the handle passes through this channel. Sealing this channel through the, application of ultrasonic heat closes it and provides a handle with an interior volume completely shut off from the exterior and from the inside of the bottle.
Patent CA-2125772-A1 (CA)
Title: Retrievable whipstock system
Inventor: WHITLER KENDALL C
IPC: E21B29/06
Filed: 1993-10-19
Abstract: A retrievable whipstock system is provided for use on a single trip into a wellbore to cut a window (8) through a casing wall (4) for passage of a drillstring used to drill a sidetrack borehole.  The retrievable sidetrack system includes a mill (14) for both starting and cutting the window through the casing, and a whipstock (20) having a deflector surface for directing the mill into the casing to cut the window. A cylindrical head (18) is included within which is releasably secured a stabilizer sleeve (16) for reducing vibration of the mill during cutting of the window to extend the service life of the mill. A whipstock anchor (24) releasably secures the whipstock within the casing, and is settable, selectively releasably, and further releasably resettable so that the whipstock may be repositioned and reoriented within the wellbore numerous times.
Patent CA-2127756-A1 (CA)
Title: Package structure of drug-containing pressure-sensitive adhesive sheet
Inventor: AKEMI HITOSHI
IPC: A61F13/00
Filed: 1994-07-11
Abstract: A package structure, in which a drug-containing pressure-sensitive adhesive sheet comprising a support, a drug-containing pressure-sensitive adhesive layer, and a separator in this order is packaged and sealed in a packaging material, is disclosed, wherein unevenness is provided on at least one of the surface of the support on the side in contact with the inside of the packaging material, the surface of the separator on the side in contact with the inside of the packaging material, and the inside surface of the packaging material.      The unevenness reduces the contact area between the packaging material and the sheet so that an adhesive, a plasticizer or any liquid component of the adhesive layer is prevented from adhering to the inside of the packaging material. Therefore, the sheet can easily be taken out of unit package on use.
Patent CA-2128194-A1 (CA)
Inventor: THELEN JOHN E
IPC: B01D53/26
Filed: 1994-07-15
Abstract: A mobile regeneration apparatus is provided for regenerating dryers.  The regeneration apparatus may be used to regenerate single tower desiccant dryers located at natural gas vehicle refueling stations.  For optimum performance, each dryer may be located upstream of a respective compressor.
Patent CA-2129973-A1 (CA)
Title: Disubstituted acetylenes bearing heterobicyclic groups and heteroaromatic or phenyl groups having retinoid like activity
Inventor: CHANDRARATNA ROSHANTHA A S
IPC: C07D405/06
Filed: 1993-02-08
Abstract: Compounds of formula (I) where R1 and R2, independently are n-alkyl groups having 2 to 8 carbons, or cyclo or branch-chained alkyl groups of 3 to 8 carbons; R3 is hydrogen or lower alkyl; X is S, O or N-R4 where R4 is hydrogen or lower alkyl; Y  is phenyl or a heteroaryl group selected from a group consisting or pyridyl, thienyl, furyl, pyridazinyl, pyrimidinyl, and pyrazinyl; A is (CH2)n where n is 0-5, lower branched chain alkyl having 3 to 6 carbons, cycloalkyl having 3 to 6 carbons, alkenyl having 2 to 6 carbons and 1 or 2 double bonds, alkynyl having 2 to 6 carbons and 1 or 2 triple bonds; B is hydrogen, COOH or a pharmaceutically acceptable salt thereof, COOR5, CONR6R7, -CH2OH, CH2OR8, CH2OCOR8, CHO, CH(OR9)2, CHOR10O, -COR11, CR11(OR9)2, or CR11OR10O, where R5 is an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5 to 10 carbons, or R5 is phenyl or lower alkylphenyl, R6 and R7 independently are hydrogen, an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5 to 10 carbons, or phenyl or lower alkylphenyl, R8 is alkyl of 1 to 10 carbons, phenyl or lower alkylphenyl, R9 is lower alkyl, R10 is divalent alkyl radical of 2-5 carbons and R11 is an alkyl, cycloalkyl or alkenyl group containing 1 to 5 carbons, have retinoic acid like activity.
Patent CA-2132569-A1 (CA)
Title: Biosensor and interface membrane
Inventor: TURNER ROBIN F B
IPC: C12Q1/00
Filed: 1994-09-21
Abstract: A regenerable biosensor probe adapted for positioning in a bioreactor comprises a selectively permeable interface membrane, a porous protein-receiving matrix adjacent to the interface membrane, an indicating electrode, an inlet conduit through which fresh protein conjugate may flow to the protein-receiving matrix, and an outlet conduit through which spent protein conjugate may be removed from the protein-receiving matrix. A selectively permeable interface membrane, which may be used in a biosensor system to separate biochemical, optical or other processes from an analyte matrix comprises a supporting mesh, a perfluorosulfonic acid polymer impregnated substrate and a homogenous film of perfluorosulfonic acid polymer. A method of preparing this interface membrane comprises fixing a substrate on to a supporting mesh to form a substrate membrane, casting a perfluorosulfonic acid polymer on the substrate membrane and curing the product to so formed.
Patent CA-2133783-A1 (CA)
Inventor: KVAMME CANDIS
IPC: A23L33/00
Filed: 1994-10-06
Abstract: Enteral nutritional composition comprising 4-30% lipid component, 65-80% carbohydrate component and 16-25% protein component, based on total caloric content, wherein said protein comprises by weight 14-30% glutamine and 5-33% arginine and said composition has a nonprotein calorie to grams of nitrogen ratio of 150:1 to 80:1.
Patent CA-2135450-A1 (CA)
Title: Latex medium for a coating composition
Inventor: JOANICOT MATHIEU
IPC: C08L57/00
Filed: 1994-11-09
Abstract: ABSTRACT            LATEX MEDIUM FOR A COATING COMPOSITION           The present invention relates to a medium for a coating composition based on film-forming latices prepared from unsaturated ethylenic monomers, characterized in that the said medium comprises, per 100 parts by weight of latex A (calculated on the basis of the solids content), which has a particle size of between 100 and 500 nm, from 0.1 to 100 parts by weight of latex B (calculated on the basis of the solids content) which has a particle size of between 5 and 40 nm.          Use of the above medium for the preparation of paper-coating compositions, varnishes and paints, adhesives, pressure-sensitive adhesives and the like.
Patent CA-2136478-A1 (CA)
Title: Digital memory for display system using spatial light modulator
Inventor: GOVE ROBERT J
IPC: G06T1/60
Filed: 1994-11-23
Abstract: A memory (15) for a digital display system (10) having a spatial light modulator (SLM) (16) that displays data in bit-plane format.  The memory (15) has control means (25) for row random access.   It also has  a  set of  input registers (31) and two sets of output registers (32), (33). The input registers (31) receive pixel data before it has been processed.  The memory (15) delivers this data back to a processor (14) for processing via a first set of output registers (32).  After processing, the input registers (31) receive pixel data that has been fully processed and is ready for display.   The second set of output registers (33), controlled at their input or output by a bit selector (37), delivers bit-planes of data to the SLM (16).
Patent CA-2137805-A1 (CA)
Title: Gray-scale stepped ramp generator with individual step correction
Inventor: KAPOOR MOHAN L
IPC: H05B44/00
Filed: 1993-06-30
Abstract: Pixel luminance of an electroluminescent display panel (22) is controlled by a row driver (24) applying a voltage equal to the panel's threshold voltage, and column drivers (26) applying the voltage value above the threshold voltage to bring the pixel (30) to the desired luminance. Each column driver (26) independently samples a stepped ramp voltage signal at its own predetermined time selected as a function of the desired luminance. Each column driver (26) then holds the sampled voltage value, and applies to its corresponding column electrode at the appropriate time a voltage equal to the sampled voltage value. The voltage rate of change of each individual step of the stepped ramped voltage signal can be controlled to vary the luminance levels, and to uniformly separate each of the luminance levels.
Patent CA-2144808-A1 (CA)
Inventor: FAIVRE FRANCOIS
IPC: B64D45/04
Filed: 1995-03-16
Abstract: L'invention concerne un dispositif d'évitement de collisions pour aéronef notamment avec le dol par contrôle de pente d'approche. Le dispositif comprend au moins des moyens (21) de localisation de l'aéronef, une base de données (22), des premiers moyens de comparaison (23), des moyens d'extraction (24) des coordonnées du point de toucher sur la piste, des moyens de calcul (25) du vecteur pente réelle de l'aéronef, des moyens d'extraction (26) du vecteur pente théorique de l'aéronef et des deuxièmes moyens de comparaison (27) comparant les vecteurs pentes. Application: Notamment des avions de ligne en approche terminale sur un terrain.
Patent CA-2145310-A1 (CA)
Title: Compositions and methods for waste treatment
Inventor: KYLE JAMES H
IPC: A62D101/45
Filed: 1993-09-21
Abstract: Methods for waste treatment and compositions of stabilized waste elements are provided, typically for the disposal of arsenical wastes. Arsenic trioxide waste produced as a by-product of metal extraction is slurried in water for from 6 to 24 hours with finely divided quicklime to produce non-volatile calcium arsenate (III). An excess of CaO stoichiometry with As is used to consume secondary waste species such as sulphate, silicate and iron oxides. The precipitated arsenate is oven dried at 120 °C and then calcined in air between 15 minutes to several hours at 1000 °C to 500 °C respectively to oxidize arsenate (III) to arsenate (V) as Ca5(AsO4)3(OH) (an apatite) as the major arsenic immobilization phase, with minor arsenic incorporated in Ca3(AsO4)2. Calcium sulphate anhydrate (sulphate immobilization) and calcium iron oxide (iron immobilization) are also produced. Tertiary immobilization is achieved milling or fracturing  and incorporating the apatite an encapsulant consisting of ordinary portland cement and fly-ash. After curing for one month in steel drums in a water saturated at-mosphere, the waste form is ready to be transported either to a repository or to be used as landfill. Further security may be achieved at the back end of the process by lining the repository with ferric clays that will strongly absorb and adsorb heavy metal species which may escape.
Patent CA-2145569-A1 (CA)
Title: Polymer mixture and films prepared therefrom
Inventor: STEENBLOCK ROLAND
IPC: C08L77/12
Filed: 1995-03-27
Abstract: The invention relates to a polymer mixture which contains (A) 50 to 85 wt.% of a polyether block amide consisting of 30 to 60 wt.% of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 70 to 40 wt.% of polyethylene glycol blocks, (B) 10 to 40 wt.% of a polyether block amide consisting of 65 to 85 wt.% of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 35 to 15 wt.% of polyethylene glycol blocks, and (C) 5 to 40 wt.% of a poly(ethylene-co-vinylacetate-g-maleic anhydride) polymer consisting of 75 to 95 wt.% of ethylene, 5 to 25 wt.% of vinylacetate and 0.1 to 2 wt.% of malefic anhydride, wherein the data relating to wt.% for the constituents (A), (B) and (C) are with reference to the total amount of polymer mixture. The invention also relates to films produced from this polymer mixture and the use of these films to produce waterproof, water vapour permeable, wind resistant textile composite materials, dressing materials and hygiene items.
Patent CA-2145879-A1 (CA)
Title: Process for fabricating layered superlattice materials and making electronic devices including same
Inventor: YOSHIMORI HIROYUKI
IPC: H01L27/115
Filed: 1993-10-21
Abstract: A liquid precursor containing a metal is applied to a substrate (18), RTP baked, and an-nealed to form a layered superlattice material (30). To obtain good electrical properties, prebak-ing the substrate (18) in oxygen in the RTP and anneal are essential, except for high bismuth con-tent precursors. Excess bismuth between 110 % and 140 % of stoichiometry and RTP temperature of 750 °C is optimum. The film is formed in two layers (30A, 30B), the first of which uses a stoi-chiometric precursor and the second of which uses an excess bismuth precursor.
Patent CA-2147298-A1 (CA)
Inventor: CURRY DOUGLAS N
IPC: H04N1/405
Filed: 1995-04-19
Abstract: Disclosed is a hyperacuity printing system for rendering halftoned image data on a recording medium. The printing system includes a data source for supplying grayscale input image data and halftoning circuitry for receiving the grayscale input image data from the data source and transforming the grayscale input image data into multi-bit value output data. The halftoning circuitry includes a look-up table for providing the multi-bit value output data where the multi-bit value output data define halftone dots, the halftone dots being arranged in the look-up table as a continuum from a lowest density value to a highest density value corresponding to the grayscale input image data, the halftone dots having a reference which is a predetermined position from a defined origin in the look-up table. Further included in the printing system is addressing circuitry providing a first set of address lines and a second set of address lines defining a screen stored in the memory, the first set of address lines and the second set of address lines providing x and y address values defined by a desired screen angle. The addressing circuitry includes rotation circuitry for modifying the x and y address values thereby rotating the halftone dots, resulting in rotated halftone dots. The addressing circuitry also includes shifting circuitry for modifying the x and y address values thereby shifting the reference point of the halftone dots away from the predetermined position from the defined origin in the look-up table, the shifting and the rotating occurring while the halftone dots are being read from the look-up table. Finally there is a modulating device for receiving the multi-bit value output data from the halftoning circuitry and converting the multi-bit value output data into a form which can be directly utilized by a writing device for writing the multi-bit value output data onto the recording medium.
Patent CA-2148759-A1 (CA)
Title: Snowshoe
Inventor: LIAUTAUD JEFFREY T
IPC: A63C13/00
Filed: 1995-05-05
Abstract: A snowshoe includes a perimeter frame carrying sheet-type floatation and having a hinge rod secured transversely of the frame by hinge rod straps.  A foot plate is pivotally mounted on the hinge rod and supports a binding to attach the snowshoe to a user's shoe or the like.   A bearing sleeve is disposed between the hinge rod and a retainer plate secured to the underside of the foot plate.   The hinge rod, bearing sleeve, retainer plate,  and hinge rod straps,  act  independently or cooperatively to vary the frictional resistance to relative rotation between the foot plate and hinge rod,  and thereby provide  a  shock  absorber effect.   Various  features  enable variation of the shock absorbing characteristics to accommodate different uses of the snowshoe and different characteristics of the user.   Other features provide improved discharge of snow which accumulates on the snowshoe, and improved retention of the user's boot longitudinally within the binding.