baber/WOPTO huggingface dataset:
Patent CA-2358444-A1 (CA)
Inventor: DUNN PAUL FRANCIS
IPC: F02B75/02
Filed: 1999-11-09
Abstract: This invention provides a method of converting a four-stroke reciprocating piston engine (10) into an efficient two-stroke engine breathing through the original overhead valves (18). This is achieved by providing a reciprocating positive displacement pump (22) having respective pumping chambers (26) arranged with their outlet (33) adjacent the inlets (34) of the engine (10) and feeding a group of power cylinders (12). The pump (22) is driven through a step-up drive from the engine (10) and the timing is such that each pumping piston (25) leads alternate ones of the power pistons (11) in the group fed thereby to their respective Top Dead Centre positions, the inlet valve (18i) to each power cylinder (12) to be fed opens before Bottom Dead Centre and closes before TDC, and the outlet valve (18e) from the fed power cylinder (12) opens before BDC and closes before TDC.
Patent CA-2359517-A1 (CA)
Title: Method of forming a synthetic cap on a bulk material pile
Inventor: SHI CAIJUN
IPC: B09B1/00
Filed: 2001-10-19
Abstract: A synthetic cover for bulk material piles and loads in transit may be formed from a slurry mixture of liquid and powder made from recycled gypsum wallboard. These constituents may be mixed and applied to cover a bulk material pile and/or waste pile, and/or to control erosion. The cover will harden to minimize water infiltration, wind blown dust, odor and affinity to birds, flies and other insects. The liquid may include water, landfill leachate and wastewater; the powder from heated recycled gypsum wallboard may include alpha-hemihydrate and shredded paper, beta-hemihydrate and shredded paper or anhydrate and shredded paper. When clean water is used, the cover is non-toxic, non-combustible and harmless to fish, birds, plants and animals.
Patent CA-2362213-A1 (CA)
Title: Open-celled polyurethane foams containing graphite which exhibit low thermal conductivity
Inventor: VAN DEN BOSCH RONALD J M
IPC: C08G18/66
Filed: 2000-02-02
Abstract: A process is disclosed for preparing an open-celled rigid polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of a blowin g agent, a cell opening agent and exfoliating graphite, wherein the thermal conductivity of the foam is from 28 to 35 mw/mk. Such foams are applicable i n the construction industry where it is desired to have a foam having flame retardation properties and a low thermal conductivity.
Patent CA-2363011-A1 (CA)
Inventor: LOBOVSKY ALEXANDER
IPC: D04H3/04
Filed: 2000-02-17
Abstract: A composite having a plurality of filaments arranged in a fibrous web that i s held together in a unitary structure by a domain matrix. The domain matrix comprises a plurality of matrix islands that individually connect, or bond, at least two filaments, to thereby hold the filaments in a unitary structure. Portions of the filament lengths within the unitary structure are free of matrix islands, causing the domain matrix to be discontinuous. The composite  possesses a greater flexibility than coated structures. The composite may be  formed into cross-plied structures. A method of making the composite is also  disclosed.
Patent CA-2364863-A1 (CA)
Inventor: SCOTT ROBERT JOHN CHARLES
IPC: H02M7/5387
Filed: 2001-12-13
Abstract: AC to DC inverters that are formed from electronic switches, such as MOSFETs, that are controlled by gating pulses obtained from comparators. The comparators compare a varying signal against two closely spaced reference voltages so as to provide gating pulses with delays needed to prevent shoot-through in the electronic switches.
Patent CA-2364922-A1 (CA)
Inventor: DRECQ DANIEL
IPC: H02K49/04
Filed: 2001-12-14
Abstract: Un dispositif de freinage à courants de Foucault, du type comportant au moins un échangeur de chaleur pour dissiper l'énergie thermique due aux courants de Foucault lors du freinage, caractérisé par le fait que chaque échangeur de chaleur est agencée pour définir un parcours de liquide de refroidissement prédéterminé pour minimiser les pertes de charge et maximiser le débit de liquide de refroidissement circulant à travers l'échangeur, en vue de diminuer les variations de température de travail de l'échangeur de chaleur, le dispositif comportant deux échangeurs de chaleur symétriques, dont les entrées (72, 73), les circuits et les sorties d'eau (75, 76) sont disposées symétriquement, de manière à compenser les efforts dus aux courants de liquide de refroidissement et minimiser ainsi le couple résiduel correspondant.
Patent CA-2365960-A1 (CA)
Title: Method of selective plastic expansion of sections of a tubing
Inventor: NAZZAL GREGORY RICHARD
IPC: E21B29/00
Filed: 2000-04-06
Abstract: A method of selective plastic expansion of sections of a tubing to create one or more recesses in the tubing with a larger diameter than that of the original tubing in which the tubing is radially symmetrically or asymmetrically expanded at one or more locations by application of a radial force to the interior of the tubing thereby inducing a plastic radial deformation of the tubing and removing said radial force from the interior of the tubing. The tubing can be a downhole tubing and the created recesses are preferably utilized to hold at least one downhole device, which is advantageously a gas lift mandrel or a sensor.
Patent CA-2366610-A1 (CA)
Inventor: SCHUMANN SOENKE
IPC: C22C23/02
Filed: 2002-01-04
Abstract: A magnesium based alloy containing at least 85.4 wt% Mg, 4.7 to 7.3 wt% aluminum, 0.17 to 0.60 wt% manganese, 0.0 to 0.8 wt% zinc, 1.8 to 3.2 wt% calcium, 0.3 to 2.2 wt% tin, and 0.0 to 0.5 wt% strontium.  The alloy may comprising up to 0.004 wt% iron, up to 0.001 wt% nickel, up to 0.003 wt% copper, or up to 0.03 wt% silicon. In addition, the alloy may comprise up to 0.001 wt% beryllium.
Patent CA-2367839-A1 (CA)
Title: Hydrogen-permeable metal membrane and method for producing the same
Inventor: EDLUND DAVID J
IPC: C25D5/02
Filed: 2000-03-20
Abstract: A hydrogen-permeable metal membrane (30) with increased hydrogen flux compared to conventional metal membranes is formed by at least one etching step in which a controlled volume of etchant is used to selectively remove material from surfaces (32, 34) of membrane (30). Without sacrificing membrane selectivity, membrane (30) enables a greater throughput of purified hydrogen.  Holes (60) or other defects in membrane (30) can be repaired by the addition of a sealing metal.
Patent CA-2368205-A1 (CA)
Title: N-protected amines and their use as prodrugs
Inventor: WILSON WILLIAM ROBERT
IPC: A61K48/00
Filed: 2000-04-26
Abstract: Compounds of formula (I) or (II), wherein X represents H, C~1-6? alkyl or C~ 1- 6? alkoxy, said alkyl or alkoxy being optionally substituted with one or mor e groups; a is 0,1,2,3 or 4; Y represents H or C~1-6? alkyl; 1, 2 or 3 of the members Z of the 5-membered aromatic ring are independently selected from -O -, -S-, -N= or -NR-, where R is H or C~1-6? alkyl optionally substituted with o ne or more of groups; and E represents a moiety such that EH is an amine; provided that in formula (I) if a = 0 then Y.noteq.H, are provided along wit h a method of selecting desired protecting groups by measuring the fragmentati on rates of compounds of formula (I) or (II) when the nitro group is selected.< /SDOAB>
Patent CA-2368824-A1 (CA)
Title: Rapid dehydration of proteins
Inventor: HALLING PETER JAMES
IPC: A61K38/00
Filed: 2000-05-15
Abstract: The present invention relates to protein-coated micro-crystals and their method of preparation. The protein-coated micro-crystals may find particular application in preparing enzymes for use as biocatalysts; preparation of therapeutic proteins for use in pharmaceutical formulations; production of cleansing agents comprising enzymes; production of paints, varnishes, coatings, films and the like comprising proteins which impart protective and/or antifouling properties; production of films, polymers, inks, coatings, electrodes and/or optical materials comprising proteins for diagnostic kits and/or biosensor applications; use of proteins for studies of molecular recognition, molecular binding and inhibitor binding in non-aqueous media, and preparation of protein based food additives.
Patent CA-2369299-A1 (CA)
Title: Inhibitor of visual function disturbance caused by optic nerve cell disorder due to factor other than ophthalmic circulatory disorder
Inventor: AZUMA MITSUYOSHI
IPC: C07D211/90
Filed: 2000-04-11
Abstract: Inhibitors for optic hypofunction caused by optic nerve cell injury induced by factors other than optic circulatory disorder which contain as the active ingredient 1,4-dihydropyridine derivatives represented general formula (I) or acid addition salts thereof: wherein X1 and X2 are the same or different and each represents hydrogen, fluoromethyl, fluoromethoxy, halogeno, cyano or nitro; R1 represents lower alkyl; R2 represents acyl, alkoxycarbonyl, acylalkyl, N-alkylated carbamoylalkyl, alkoxyalkyl, alkoxycarbonylalkyl, acyloxyalkyl, nitratoalkyl, cyanoalkyl, heterocycle-alkyl, haloalkyl, alkenyl or alkynyl; A represents alkylene having at least five carbon atoms in total and having carbon to which two alkyl groups are attached; and m is an integer of from 1 to 3.
Patent CA-2370483-A1 (CA)
Title: Spade drill bit
Inventor: HAUGHTON KEITH LOUIS
IPC: B27G15/00
Filed: 2000-06-23
Abstract: A spade drill bit (10) for use in association with a drill having a direction of rotation includes an elongate shank (12), a spade portion (14) and a centre spur (16). The elongate shank portion has a central longitudinal axis and one end (18) adapted to engage the drill. The spade portion (14) extends longitudinally from the other end of the elongate shank. The spade portion has opposed spaced apart planar faces (24) and each planar face has a leading shoulder edge (30) and corner leading edge (66). Each planar face can have a leading face portion, a trailing face portion and a trailing shoulder edge.  The centre spur (16) extends outwardly from the spade portion along the central longitudinal axis. A dimple (70) is formed proximate to a corner leading edge which is between the leading shoulder edge and the leading longitudinal edge.
Patent CA-2375488-A1 (CA)
Title: Process for making a granular detergent composition
Inventor: KAZUTA TAKASHI
IPC: C11D17/06
Filed: 2000-06-20
Abstract: A process for detergent composition which has improved solubility or dissolution in laundering solutions, especially in solutions kept at cold temperatures (i.e., less than about 30 °C), is disclosed. The process includes mixing in at least one high-speed, low-speed, or a moderate-speed mixer, and various combinations of such mixers, at least two materials selected from the group consisting of dry agglomerates, wet agglomerates, spray dried granules, and detergent adjunct ingredients to form particles. Optionally a conditioning apparatus may also be used. The granular detergent composition made from this process is aesthetically pleasing to consumers and has improved flowability.
Patent CA-2378939-A1 (CA)
Inventor: ADAMS LLOYD A
IPC: G06Q40/00
Filed: 2000-07-21
Abstract: A system and method for processing financial payments is provided in which there is at least one user terminal, at least one account processor, and a processing server. The processing server receives financial transaction data from at least one user terminal and communicates with at least one account processor, the financial transaction data comprising an amount and an account number. The processing server determines which of the account processors corresponds to the financial transaction data and transmits at least part of the financial transaction data to the determined account processor. The user terminal requires no special software other than standard web browser software. The server can update an account processor and a general ledger.
Patent CA-2379567-A1 (CA)
Title: Heterogeneous epoxidation catalyst
Inventor: CARROLL KEVIN M
IPC: C07D301/19
Filed: 2000-08-08
Abstract: Highly active and selective epoxidation catalysts are prepared by combining high surface area silica support or the like, having surface area greater than 1100 m2/g, with a titanium source. The titanium source is a non-oxygenated hydrocarbon solution of a titanium halide or a vapor stream of titanium tetrachloride. The impregnated support is then calcined at an elevated temperature (preferably, in a substantially oxygen-free atmosphere), and, optionally, reacted with water and/or silylated. The resulting materials are highly active heterogeneous epoxidation catalysts for the reaction of olefins with organic hydroperoxides.
Patent CA-2381024-A1 (CA)
Title: Coated optical fibre
Inventor: TAKAHASHI FUMIO
IPC: G02B6/024
Filed: 2002-04-09
Abstract: At least two layers of coating materials are applied to the periphery of a silica-based optical fibre to fabricate a coated optical fibre. This coated optical fibre has durability against a proof test of 1.38 GPa or more through the entire length thereof and also has 1.4 N or less of a coating strip force required for removing coating from the silica-based optical fibre. Thereby, when a proof test applying an elongation by a factor of two or more is conducted, the coating can be prevented from delaminating from the optical fibre, and workability in removing the coating also becomes excellent.  The coated optical fibre preferably makes a coated optical fibre for components.
Patent CA-2387218-A1 (CA)
Title: Pruning apparatus
Inventor: TARDIF JEAN-ROCH
IPC: A01D75/30
Filed: 2002-05-22
Abstract: A pruning apparatus, particularly for pruning low bushes on the ground, such as Blueberry bushes, includes a wheeled main frame to be towed behind a tractor, and a plurality of ground work units pivotally connected to the main frame. The units are positioned in front and rear rows and each is selectively positioned in a transverse posi-tion. Thus a pruning area effected by one of the unit overlaps an adjacent pruning area of another unit. The connection between each unit and the main frame permits the unit not only to pivot about a vertical axis, but also to pivot slightly about a horizontal axis in a forward direction so that the apparatus is adapted to conform to a contour of uneven portions of a ground surface. Each ground work unit has a drive shaft attached with a plurality of tool member assemblies. The tool member assemblies are so designed as to effect a cutting and flailing action on the Blueberry bushes, thereby cutting and slashing the Blueberry bushes to encourage regrowth and improve fruit output.
Patent CA-2389986-A1 (CA)
Inventor: SHUBAT ALEX
IPC: G11C29/00
Filed: 2000-11-30
Abstract: A semiconductor memory architecture for embedded memory instances (204A, 204B) having redundancy. A fuse box register (206) is provided outside the memory macro associated with the memory instances. The memory instances are daisy--chained to the fuse box register (206) containing a plurality of fuses (302) used for storing fuse data associated with the defective rows and columns of the memory. During power-up or after blowing the fuses, the contents of the fuses (i.e., fuse data) are transferred to a plurality of volatile redundancy scan flip-flops (304). The fuse box (206) is then deactivated to eliminate quiescent through the fuses (302). The redundancy scan flip-flops (304), connected in a scan chain, are located inside the fuse box (206) as well as the memory instances (204A, 204B). During the shifting mode of operation, the fuse contents are scanned into individual flip-flops, organized as scan registers (208A, 208B) for row redundancy and column redundancy, of the memory instances. Redundant elements are pre-tested by bypassing the fuses (302) and directly scanning in arbitrary patterns into the redundancy scan flip-flops (304) (override mode operation).
Patent CA-2390310-A1 (CA)
Title: Process for decomposing hardly decompasable harmful substances
Inventor: SUZUKI MOTOSHI
IPC: C02F3/34
Filed: 2000-11-09
Abstract: A method of degrading a hardly degradable harmful material contained in soil, ash or water by using a microorganism or an enzyme produced by the microorganism, characterized in that the soil, ash or water containing the above-described hardly degradable harmful material is subjected to a treatment for reducing or exterminating miscellaneous bacteria contained therein and then brought into contact with a microorganism capable of degrading the hardly degradable harmful material and/or an enzyme produced by the microorganism.
Patent CA-2390810-A1 (CA)
Inventor: HAASE ROGER L
IPC: C09J7/40
Filed: 2002-06-17
Abstract: A treatment for silicone liner coatings after undergoing UV curing. The silicone coats a liner to facilitate its removal from the adhesive attached to a label.  The silicone, while a liquid, forms a layer on the liner. UV radiation cures the liquid silicone and causes it to become a coherent, virtually solid layer. Heating the cured silicone layer and allowing it to rest for a short period of time then permits the immediate contact with it of the label's adhesive side without incurring inseparability of the silicone-coated liner from the adhesive-coated label.
Patent CA-2392752-A1 (CA)
Inventor: SENIOR GEOFF D
IPC: A24F47/00
Filed: 2000-11-30
Abstract: The present invention relates generally to a process and an apparatus for flotation of sulphide minerals, such as sulphide minerals hosted in ores ric h in magnesium minerals. The process involves grinding of the nickel ore rich in magnesium minerals and thereafter separation of the ground material into a coarse and fine stream of particles coarser than about 30 microns and finer than about 30 microns, respectively. Optionally, the fines stream may be further separated into a slimes fraction. The coarse and fine flotation streams are then fit to separate parallel flotation circuits. Acid and/or activator is added during flotation of the coarse stream only. Significantly  improved recoveries and grades were obtained with reduced acid consumption.< /SDOAB>
Patent CA-2394033-A1 (CA)
Inventor: LANDER ERIC S
IPC: C12Q1/68
Filed: 2000-12-11
Abstract: The invention provides nucleic acid segments of the human genome, particular ly nucleic acid segments from a gene, including polymorphic sites. Allele- specific primers and probes hybridizing to regions flanking or containing these sites are also provided. The nucleic acids, primers and probes are use d in applications such as phenotype correlations, forensics, paternity testing , medicine and genetic analysis.
Patent CA-2399712-A1 (CA)
Title: Guided wave optical switch based on an active semiconductor amplifier and a passive optical component
Inventor: LI XUN
IPC: G02F1/313
Filed: 2001-02-20
Abstract: A guided wave optical switch having a passive optical component optically coupled to a low gain optical amplifier - both being formed monolithically in a semiconductor substrate. The passive optical component may comprise a single-mode -3 dB optical power splitter that receives at an input an optical signal and splits that optical signal approximately equally between two outputs. The passive optical component may also comprise an optical isolator, an optical circulator, and other known passive optical devices. The low gain optical amplifier includes a waveguide having an active region that may provide optical signal gain when excited by an electrical current provided by a metal or metallic electrode connected to the active region. The active region may be a bulk active region, a multiple quantum well active region, or the waveguide may comprise a buried heterojunction waveguide having either a bulk or multiple quantum well active region.
Patent CA-2400327-A1 (CA)
Title: Procede de production d'un complexe metallique d'un derive aminooligosaccharide
Inventor: WADA MASATOSHI
IPC: C07H23/00
Filed: 2001-12-14
Abstract: L'invention concerne un procédé de production d'un complexe métallique fortement purifié d'un dérivé aminooligosaccharide par élimination efficace des impuretés, des produits dérivés, des éluats en excès, etc. générés lors de la synthèse du dérivé aminooligosaccharide et de la formation du complexe métallique de ce dernier. Le procédé consiste à soumettre un mélange de réaction liquide brut contenant un dérivé aminooligosaccharide à l'étape de complexion avec des ions métalliques et à une étape de purification, cette dernière consistant au moins d'une phase réalisée selon le procédé d'extraction par solvant, le procédé d'échange d'anions, le procédé de séparation de membrane de filtre, l'électrodialyse ou le procédé d'absorption.
Patent CA-2405420-A1 (CA)
Inventor: SPITS RAYMOND ANTHONY
IPC: C01B31/06
Filed: 2001-04-02
Abstract: A method is provided for changing the colour of a brown type IIa diamond from brown to colourless. The method involves subjecting the diamond to selected conditions of elevated temperature and elevated pressure to produce the colour change.
Patent CA-2405732-A1 (CA)
Title: Detection des bacteries et des bacteriophages a l'aide de substrats a enzymes immobilisees
Inventor: WICKS JAMES H
IPC: C12Q1/70
Filed: 2000-08-14
Abstract: L'invention concerne, d'une part, des procédés permettant de détecter des bactériophages et des bactéries, consistant à utiliser un substrat à enzymes immobilisées et, d'autre part un substrat à enzymes immobilisées.
Patent CA-2405736-A1 (CA)
Title: Ion-sensitive, water-dispersible polymers, a method of making same and items using same
Inventor: POMPLUN WILLIAM S
IPC: C08F220/06
Filed: 2001-05-03
Abstract: The present invention is directed to ion-sensitive, water-dispersible polymers. The present invention is also directed to a method of making ion- sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, water-dispersible binder compositions and their applicability in water-dispersible personal care products.
Patent CA-2405756-A1 (CA)
Title: Eaves trough with a gutter shield
Inventor: BROCHU STEPHANE
IPC: E04D13/076
Filed: 2002-09-30
Abstract: A gutter guard for protecting a gutter, the guard member having an elongated configuration with a generally planar central portion having a plurality of apertures extending therethrough, first and second longitudinally extending opposed sides located on either side of the planar central portion, a first side of a guard member having an upwardly extending portion designed to fit within a recess formed in the gutter, while the second side of the guard member has an inverted U-shaped portion designed to fit over an upper marginal edge of the rear wall of the gutter. This arrangement permits direct attachment of the gutter to the adjacent wall of the structure to which it is attached through the inverted U-shaped portion. In one embodiment, an intrical one- piece gutter guard and gutter is provided.
Patent CA-2406249-A1 (CA)
Inventor: GIROUX RICHARD LEE
IPC: E21B34/06
Filed: 2001-04-12
Abstract: A downhole differential flow control valve (50) is provided that utilizes a differential pressure area having one pressure area on which the wellbore pressure (Pw) acts and a second area different from the first area on which pressure (Pt) in the tubing acts. The differential area reduces the load in which a spring (66) is required to exert a closing force in the valve. Thus, a coil spring can be used to improve the closing speeds of the valve.
Patent CA-2406634-A1 (CA)
Title: Amino substituted dibenzothiophene derivatives for the treatment of disorders mediated by the np y5 receptor
Inventor: DONALD CRAIG SAMUEL
IPC: A61K31/422
Filed: 2001-05-01
Abstract: Compounds of formula (I), wherein X is a group of formula (A) or (B) and R1, R2, R3, R4, n, x, y and z are defined within are described. Processes for their preparation and their use in the treatment of disorders mediated by the neuropeptide Y5 receptor in a warm-blooded animal, such as a human being are also described.