baber/WOPTO huggingface dataset:
Patent CA-2172233-A1 (CA)
Inventor: ZHONG LEI
IPC: H01L21/66
Filed: 1996-03-20
Abstract: A single crystal silicon wafer is sliced off so as to have a slant surface that is inclined from plane (001) such that the normal of the slant surface is inclined by 0.01° to 0.2° from direction [001] toward direction [110].  After being cleaned, the silicon wafer is heat-treated at 600-1, 300°C for not less than 1 minute in an ultrapure argon or hydrogen atmosphere containing nitrogen at not more than 0.1 ppm, to thereby cause the slant surface to have a stepped crystal surface structure.  The stepped crystal surface structure is constituted of step walls Sa and Sb when it has been formed by a heat treatment in an argon atmosphere, and substantially all of its step walls are of a type Sb when it has been formed by a heat treatment in a hydrogen atmosphere.
Patent CA-2174196-A1 (CA)
Title: Aqueous polyurea dispersions with improved hardness and solvent resistance
Inventor: JACOBS PATRICIA B
IPC: C08G18/28
Filed: 1996-04-15
Abstract: The present invention relates to aqueous polyurea dispersions wherein the polyureas contain 0.1 to 25% by weight, based on the weight of the polyureas, of en-urea groups (calculated as -NH-C(O)-N-, MW 57) obtained by the reaction of an isocyanate group with an aldimine group prepared from a cyclic polyamine containing (cyclo)aliphatically bound amino groups. The present invention also relates to a process for preparing these aqueous polyurea dispersions and to their use for preparing coatings.
Patent CA-2176905-A1 (CA)
Title: Customer information control system and method with api start and cancel transaction functions in a loosely coupled parallel processing environment
Inventor: HOTEA ANDREAS E
IPC: G06F9/50
Filed: 1996-05-17
Abstract: The present invention is a distributed computer system having a plurality of end user terminals and a plurality of loosely coupled server computers that share no resources with each other. A multiplicity of user application processes are distributed over the server computers. A transaction start table, stored on a first one of the server computers, stores transaction start data representing transactions whose execution has been requested by other transactions being executed by the user application processes. The transaction start data indicates a start condition for each transaction whose execution has been requested. For most requested transactions the start condition is a time value indicating an earliest time at which the requested transaction's execution should be started. When any of the user application processes executes a Start transaction function, a transaction start record is generated and stored in the transaction start table. The transaction start record is stored in the same transaction start table on the first server computer regardless of which server computer executes the Start transaction function. A transaction start process evaluates the start condition for each transaction whose execution has been requested. When the start condition for a requested transaction is satisfied, the transaction start process initiates execution of that requested transaction.
Patent CA-2176957-A1 (CA)
Title: Winding machine
Inventor: DOERFEL WALTER
IPC: B65H18/20
Filed: 1994-11-19
Abstract: A winding machine for winding webs, such as paper webs which may be longitudinally slit, has two support rollers (TW1 and TW2) that carry the roll being produced (R; R';      R", R"') in a winding bed formed between the support rollers. Both support rollers have elastic casings (M1 and M2) which are however deformable to a different extent. One of the support rollers is partially surrounded by the web during winding. In order to further optimize the winding quality, even in the case of heavy wound web rolls, the support roller (M1) subjected to the highest total load, that results both from static and dynamic loads during winding, has the most elastically deformable casing. Such a winding machine is preferably developed so that the space (DR) delimited by both support rollers (TW1 and TW2) and the already partially produced wound web roll (R) is sealed as much as possible at its ends and from below. An overpressure can be generated in the space (DR) for relieving the inherent weight of the roll (R). This combination of measures substantially prevent undesirable inclusion of air.
Patent CA-2180212-A1 (CA)
Inventor: LEWIS WADE A
IPC: A61G17/04
Filed: 1996-06-28
Abstract: A dish assembly for a burial casket comprises a generally rectangular cap panel having a pair of opposed sides, a puffing member attached to each side of the pair of sides along respective adjacent edges of the puffing member and side, a cap panel insert removably inserted between the puffing members and juxtaposed relative to the cap panel, a tab removably inserted between the respective adjacent edges of each attached puffing member and side, and a first portion of a fastener attached to said tab and a second portion of the fastener attached to the cap panel insert. The first and second portions of the fastener are removably secured one to another such that the cap panel insert is removably secured to the cap panel of the dish assembly. The respective adjacent edges of the puffing members and sides may be secured together with staples.          The tab comprises a rectangular portion and two leg portions extending from said rectangular portion. The tab leg portions are removably inserted and retained between the respective adjacent edges of the attached puffing member and side. The space between the tab leg portions accommodates staples therebetween. The fastener may be a hook and loop type fastener.
Patent CA-2180436-A1 (CA)
Inventor: JOHNSON HOWARD FREEMAN
IPC: B01D29/90
Filed: 1994-12-01
Abstract: In a fabric filter apparatus and a method of feeding. dusty gas to the dusty gas section of a fabric filter apparatus, the housing (11) of the fabric filter apparatus includes at least one substantially vertically extending duct (13) the lower end of which is in fluid communication with the dusty gas inlet (31). The duct diverts a portion of the dusty gas entering the fabric filter apparatus and delivers it to a corner of the housing (11) at a position intermediate the. level of the porting plate (40) and the bottom of the circular filter bag array (50).
Patent CA-2184149-A1 (CA)
Title: Recessed Lighting Fixture
Inventor: CALUORI GIUSEPPE
IPC: F21V21/04
Filed: 1996-08-26
Abstract: The invention provides a recessed lighting fixture having an outwardly extending housing flange about a lower end of the fixture housing and retaining clips mounted to the housing wall. The retaining clips have enlarged ends trapped within the housing and extending through axial slots so as to permit axial movement along the housing wall. Each retaining clip includes a spring armbiased to an open position in which the spring arm extends radially from the housing, part of the upper portion being flexible such that the spring arm can be depressed toward the housing wall. The fixture can thus be installed through a ceiling opening barely larger than the diameter of the housing. Means is provided for adjusting the position of the retaining clip axially along the housing wall, which secures the housing in place by clamping the ceiling between the housing flange and the retaining clips.
Patent CA-2184431-A1 (CA)
Inventor: SUZUKI TOSHIHIRO
IPC: B23K1/20
Filed: 1996-08-29
Abstract: A brazing material comprising a mixture of aluminum brazing metallic powder, flux, binder, and alcohol for diluting the binder is coated on a surface of an extruded flat tubed strip of aluminum type and this and aluminum type fins are brazed together.
Patent CA-2186936-A1 (CA)
Inventor: NAKAI AKIRA
IPC: C08G2/06
Filed: 1996-10-01
Abstract: The present invention provides a process for preparing a thermally very stable polyacetal copolymer having very small unstable terminals even at a high polymerization yield, by the copolymerization of trioxane as the principal monomer with a comonomer copolymerizable therewith, wherein an isopolyacid or an acidic salt thereof is used as a polymerization catalyst; the catalyst can simply be deactivated in a small amount of a deactivator solution after the polymerization; and a washing step is not required. The copolymerization is effected with an isopolyacid or an acidic salt thereof used as a polymerization catalyst until the remaining monomers account for at most 10 % by weight of all the fed monomers, and a solution containing a deactivator for the above catalyst is added in an amount of 0.01 to 10 % by weight based on the resulting crude polymer to deactivate the catalyst, followed by subjecting the crude polymer intact to a heat-melting treatment without washing it.
Patent CA-2187320-A1 (CA)
Title: Improved plastic pipe former
Inventor: WISE JOHN
IPC: B29C53/82
Filed: 1995-04-07
Abstract: An improved former assembly which can be used in the manufacture of plastic pipe with the former assembly comprising a plastic pipe former assembly having a housing, a center tube (218) supported on the housing, and a plurality of rollers (300) oriented about the center tube, with the improvement comprising a plurality of universal joint assemblies, each having a first end, a second end and a splined coupling (260), each of the first ends being connected to the housing and each of the second ends being  connected to one of the rollers.
Patent CA-2187562-A1 (CA)
Title: Higher heat styrenics
Inventor: WOODEN DAVID
IPC: C08F283/08
Filed: 1996-10-10
Abstract: A true solution of up to about 15 weight % of polyphenylene ether (PPO) in a styrenic polymer may be prepared by dissolving the PPO in one or more of the monomers polymerized to form the styrenic polymer and polymerizing the resulting solution in the presence of a free radical initiator. The resulting polymer has a higher Tg than crystal polystyrene and is suitable for use in hot drink containers.
Patent CA-2188290-A1 (CA)
Title: Novel silicon carbide dummy wafer
Inventor: WILLKENS CRAIG A
IPC: C04B35/573
Filed: 1996-02-28
Abstract: The present invention relates to an unsiliconized or siliconized wafer consisting essentially of recrystallized silicon carbide, the wafer having a diameter of at least 150 mm and a thickness of between 0.5 and 2 mm, and having a porosity or free silicon content between 15 v/o and 43 v/o.
Patent CA-2188949-A1 (CA)
Title: Benzofuran derivatives as d4 receptor antagonists
Inventor: KULAGOWSKI JANUSZ JOZEF
IPC: A61K31/343
Filed: 1995-04-26
Abstract: A class of chemical compounds comprising a benzo¢b!furan moiety and a substituted heterocyclic moiety, linked via the 3-position of the benzo¢b!furan moiety by a methylene group, are antagonists of dopamine receptor subtypes within the brain, being extremely potent antagonists of the human dopamine D4 receptor subtype and having a selective affinity for the D4 subtype over other dopamine receptor subtypes, and are accordingly of benefit in the treatment and/or prevention of psychotic disorders such as schizophrenia whilst manifesting fewer side-effects than those associated with classical neuroleptic drugs.
Patent CA-2190267-A1 (CA)
Title: Rotatably locking pipe coupling assembly
Inventor: GILL AJIT SINGH
IPC: F16L23/024
Filed: 1995-01-09
Abstract: A coupling for attachment to the end portion of a pipe (1) having circumferentially directed shoulder (3a) in such end portion includes a coupling body (6) which receives the end portion of the pipe (1) therein and a set of jaw members (24E-27E) which, after the end portion of the pipe (1) is received in the coupling body (6), move to a closed position to engage the shoulder (3a) so that the coupling is locked onto the end of the pipe (1) and the pipe cannot be pulled from the coupling because the jaw members (24E-27E) acting against the shoulder (3a) prevent such movement. The coupling can be provided with sets of jaw members (24E-27E) at each end to couple together two pipes (1, 2) each with end portion shoulders (3a, 4a) or have jaw members at one end and conventional connectors such as threads (64, figure 6), ridged inserts (121, figure 12), flanges, or other types of connectors at the other end. Valves (figure 5) or other fittings may be incorporated into the coupling.
Patent CA-2192011-A1 (CA)
Inventor: GLASTRA HENDRIK
IPC: A61F2/95
Filed: 1996-12-04
Abstract: This invention relates to a method for forming a stent, comprising providing a tubular element with a central-section and two end-sections placed opposite each other and expanding at least one end-section. The invention also relates to a catheter to be used with for instance the method referred to, comprising a tube-like basic body with a proximal and a distal end, an inflatable, preformed balloon member arranged at the distal end with a shape comprising in inflated state a substantially cylindrical central-section and at least one end-section diverging so as to have a larger diameter.
Patent CA-2192811-A1 (CA)
Title: Method and apparatus for the formation of particles
Inventor: HANNA MAZEN
IPC: B01J2/04
Filed: 1995-06-30
Abstract: The invention provides a method for forming particles of a substance, by co-introducing into a particle formation vessel, in which the temperature and pressure are controlled, of a supercritical fluid; a solution or suspension of the substance in a first vehicle; and a second vehicle which is both substantially miscible with the first vehicle and substantially soluble in the supercritical fluid, in such a way that dispersion of the solution or suspension and the second vehicle, and extraction of the vehicles, occur substantially simultaneously and substantially immediately on introduction of the fluids into the vessel, by the action of the supercritical fluid. Preferably the solution/suspension of the substance is introduced separately from the second vehicle, in such a way that contact between the solution/suspension and the second vehicle occurs either substantially simultaneously with, or immediately before, their dispersion by the supercritical fluid and extraction of the vehicles by the supercritical fluid. The method allows a high degree of control over the size, shape, crystalline form and other physico-chemical properties of the particulate product. The invention also provides apparatus for carrying out such a method, using a coaxial nozzle to introduce the fluids inro the particle formation vessel, and a particulate product made using the method or the apparatus.
Patent CA-2192887-A1 (CA)
Title: Method and plant for the hot rolling of strip
Inventor: KRAMER STEPHAN
IPC: B60G17/005
Filed: 1996-12-13
Abstract: A method and a plant for the hot rolling of strip, in which the rolling stock is rolled in at least one reversing roughing stand with a number of roughing passes into a broken-down strip, and the broken-down strip is transported over an intermediate roller table into at least one Steckel finishing stand and the strip is finish-rolled in the finishing stand with a number of passes into a finished strip having a predetermined thickness, and the  strip is  finally wound into a coil.   The length of the intermediate roller table determined by the length of the broken-down strip is shortened and tandem rolling is carried out in the roughing stand and the finishing stand at least during the last breaking-down pass of the strip.
Patent CA-2193459-A1 (CA)
Title: Process for preparing imidazole derivative
Inventor: TAKAHASHI TOSHIYA
IPC: B01J20/12
Filed: 1996-12-19
Abstract: An imidazole derivative of the general formula (1):     (see fig. I)                        (1) wherein R1 and R2 are each a hydrogen atom or an alkyl, aryl, acyl or aralkyl group, X and Y are each an oxygen or sulfur atom, and Z is a substituted alkyl group is prepared by reducing a thienoimidazole carboxylic acid of the general formula (2):     (see fig. II)                              (2) in an alcoholic solvent using a palladium catalyst, adding an adsorbent and an ion exchange resin, chelate resin or polymeric flocculating agent to the reaction mixture, and removing the spent catalyst from the reaction mixture.
Patent CA-2194876-A1 (CA)
Title: Bioadhesive-wound healing composition
Inventor: LEUNG SAU-HUNG
IPC: A61K35/35
Filed: 1995-07-07
Abstract: The present invention pertains to therapeutic bioadhesive-wound healing compositions useful for treating wounds and increasing the proliferation and resuscitation rate of mammalian cells. The compositions comprise a bioadhesive agent and a therapeutically effective amount of a wound healing composition. In one embodiment the wound healing composition comprises (a) pyruvate; (b) an antioxidant; and (c) a mixture of saturated and unsaturated fatty acids. The therapeutic bioadhesive-wound healing compositions may further comprise medicaments such as antiviral agents, antikeratolytic agents, antiinflammatory agents, antifungal agents, antibacterial agents, immunostimulating agents, and the like. The bioadhesive-wound healing compositions may be utilized in a wide variety of pharmaceutical products. This invention also relates to methods for preparing and using the bioadhesivewound healing compositions and the pharmaceutical products in which the compositions may be used.
Patent CA-2197196-A1 (CA)
Inventor: EL-HANANY URI
IPC: G01T1/24
Filed: 1995-08-07
Abstract: This invention discloses a method for determining gamma ray photon energy comprising irradiating a high resistance n-type or p-type cadmium telluride alloy crystal (10) with gamma ray photons, providing first and second electrical contacts (20, 30, 40) which are in electrical communication with the crystal (10), which are respectively negatively and positively biased and which provide free flow of electrons from the negatively biased contact to the crystal and wherein holes, generated by absorption of the photons in the crystal, recombine with said electrons and determining the photon energy by measuring the amount of charge generated per photon absorbed by the crystal.
Patent CA-2198936-A1 (CA)
Inventor: BONMARTIN MICHEL
IPC: F16L55/16
Filed: 1996-07-18
Abstract: L'invention concerne un dispositif destiné à être fixé de façon étanche sur au moins un élément cylindrique (1, 1'). Il comporte: un premier manchon (2), un second manchon (3) coaxial au premier manchon (2), de capacité à se déformer supérieure à celle du premier manchon (2) et solidarisé de façon étanche par ses deux extrémités au premier manchon (2), au moins deux bagues cylindriques (4, 5) coaxiales au second manchon (3), appliquées sur celui-ci et dont chacune est solidarisée par un de ses bords à une extrémité du second manchon (3), au moins un moyen d'injection (6, 6') d'un fluide sous pression entre le premier (2) et le second (3) manchon.
Patent CA-2201166-A1 (CA)
Title: A method of preparing a steel pipe, an apparatus thereof and a steel pipe
Inventor: OHNISHI TOSHIO
IPC: C21D9/08
Filed: 1996-08-21
Abstract: A process for reducing a raw steel pipe obtained by a solid phase bonding pipe manufacturing method or a welding pipe manufacturing method is carried out by heating the steel pipe to a temperature in excess of 100 ·C and lower than 800 ·C before it is reduced, restricting the temperature of the steel pipe during a rolling operation to a level in a specific range, controlling the temperature difference of the steel pipe in the circumferential direction thereof at the inlet side of a reducing mill to be in a specific range, and also controlling the temperature of the steel pipe between the stands of the reducing mill. This enables the steel pipe to be reduced with a low load with the work hardening effect minimized without deteriorating the properties of the surface thereof, and the dimensional precision of the product pipe to be maintained at a high level.
Patent CA-2204074-A1 (CA)
Title: A flexographic printing element having a powder layer and a method for making a flexographic printing plate therefrom
Inventor: NI FAN ROXY
IPC: B41C1/18
Filed: 1997-04-30
Abstract: A photosensitive printing element having an overall layer of powder material and a process for making a flexographic printing plate from such an element are disclosed. The photosensitive element includes a support, a photopolymerizable layer, and a layer of powder material on the photopolymerizable layer. The layer of powder material can be opaque or transparent depending upon desired use.
Patent CA-2205437-A1 (CA)
Title: Watercraft drive with a rudder propeller
Inventor: KAUL STEFAN
IPC: B63H5/10
Filed: 1995-11-14
Abstract: A watercraft drive has a double rudder propeller driven by a driving engine via a driving shaft (1), an angular gear (3, 4) and an output transmission shaft (5). A propeller (6, 7) is arranged at each end of the output shaft. A guiding device made of guide blades (8a, 8b) is arranged between the propellers to correct aerodynamic conditions between both propellers (6, 7) and thus to reduce energy losses.
Patent CA-2212406-A1 (CA)
Inventor: KEMNETZ STEVEN
IPC: C09D5/04
Filed: 1997-08-06
Abstract: The present invention involves the discovery that an organoclay made by the reaction of smectite clay and a quaternary ammonium compound (quat) can be mixed with fibrous material such as wastepaper pulp to form a unique rheological additive for organic fluid systems. Such a rheological additive has broad uses, is cost effective, and is particularly useful as a rheological additive for asphalt and organic paints and coatings. In an important aspect the invention is a rheological additive providing inexpensive, effective and efficient rheological properties when used at low levels in organic systems. In one specific aspect, the invention provides a rheological additive comprising: a) one or more organoclays made by the reaction of smectite clay and one or more organic quaternary ammonium chloride compounds at a percent organic of for about 80% to about 140% of the cation exchange capacity of the smectite clay and b) one or more fibrous materials such as newsprint or waste paper pulp. The invention also includes a method of preparing the inventive rheological additive and organic fluid systems containing the improved rheological additive including systems such as asphalt, pitch, creosote, paints and coatings, oil well drilling fluids, polyesters, epoxies, adhesives, cosmetics and inks.
Patent CA-2214424-A1 (CA)
Inventor: DEZAEL CLAUDE
IPC: B01D53/52
Filed: 1997-09-15
Abstract: On décrit un procédé et un dispositif de traitement d'un gaz contenant de l'hydrogène sulfuré et du dioxyde de soufre ayant pour but de réduire sensiblement les émissions de soufre vapeur dans les gaz traités, le procédé étant caractérisé en ce que l'on met en contact dans un réacteur-contacteur (2) gaz-liquide le gaz avec un solvant (5) et l'on récupère un gaz (20) qui est envoyé dans un second réacteur (102) où il est mis à nouveau en contact avec un solvant (105), ledit solvant étant refroidi par des moyens appropriés (190), ce qui permet de séparer une partie du soufre du solvant. Ce solvant désaturé en soufre est utilisé pour réaliser le contact avec le gaz (20) provenant du premier réacteur (2). Le gaz (120) issu du second réacteur est très appauvri en soufre vapeur. Au moins un des réacteurs contient un catalyseur. Application à l'épuration d'effluents d'unités Claus.