baber/WOPTO huggingface dataset:
Patent CA-2224054-A1 (CA)
Title: Water pumping apparatus utilizing compressed air
Inventor: NAGATA TSUGIO
IPC: F04B9/123
Filed: 1991-07-02
Abstract: A method of and device for providing compressed air of this invention comprise: a vessel proper (1) having an air chamber that can hermetically seal air therein, and being in structure capable of reducing the internal volume of said air chamber correspondingly to the external hydraulic pressure; a compressed air recovery vessel (30) connected to said air chamber through a check valve (32), into which vessel the compressed air is fed under pressure when the internal volume of said air chamber (12) is reduced correspondingly to the external hydraulic pressure; and a weight (40) fixed to these vessels forenabling these vessels to sink into water. A water pumping device of this invention using compressed air thus obtained comprises: a hermetic vessel (84 or 110) provided with a hermetic water tank (88 or 114) and air expansion chamber (90 or 116), and disposed between an upper stream side reservoir (80) for the power generating unit and a lower stream side reservoir (82) for storing used water after power generation; a water inflow pipe (92) used for introducing water from said lower stream side reservoir (82) into said hermetic water tank (88 or 114) and connected to said hermetic water tank; a water pressure-feeding pipe (94) used for feeding water in the hermetic water tank (88 or 114) into said upper stream side reservoir (80) under pressure and connected to said tank; water flow control valves (98, 100) provided in said water inflow pipe (92) and water pressure-feeding pipe (94) respectively; and a compressed air containing vessel (30) fixed to the device through water flow control valves, by which vessel compressed air for pressure-feeding water in said hermetic water tank to said upstream side reservoir (80) through said pressure-feeding pipe (94) can be discharged with the internal volume of said air expansion chamber (90 or 116) increased.
Patent CA-2228303-A1 (CA)
Inventor: BRUNT WILLIAM HENRY
IPC: E06B3/54
Filed: 1996-08-13
Abstract: A multiple glazing unit (1) has first and second panes (4, 6) held apart by a spacer frame (8). The unit (1) is suspended from a structure, such as a building framework, by a supporting assembly (18) which extends through apertures (24, 26) in the first and second panes (4, 6) respectively. The supporting assembly (18) comprises a boss (34) which is located between the first and second panes (4, 6). Annuli of adhesive tape (48, 50) are used to seal between the boss (34) and the first and second panes (4, 6) respectively.
Patent CA-2228568-A1 (CA)
Title: Determining sinr in a communications system
Inventor: ABU-DAYYA ADNAN
IPC: H04B7/08
Filed: 1998-02-04
Abstract: Diversity path signals, each comprising time division multiplexed symbols in a time slot including known symbols constituting a reference signal, are combined with respective weights to reduce co-channel interference. The weights are determined, from a correlation matrix and a reference signal correlation vector, using a sliding window starting with synchronization symbols and/or CDVCC (coded digital verification colour code) symbols as the known symbols. SINR (signal to interference plus noise ratio) is determined for each window position from elements of the correlation matrix and the reference signal correlation vector. The determined SINRs are averaged through the time slot, over a plurality of time slots, and for the diversity paths to provide an accurate determination of SINR within a short period. The SINR provides a reliable signal quality parameter that is useful in a cellular communications system for procedures such as hand-off, adaptive channel allocation, dynamic power control, and cell tiering.
Patent CA-2228595-A1 (CA)
Title: Novel water-soluble c-ring analogues of 20 (s)-camptothecin
Inventor: VENDULA SHARMA MANOHARA
IPC: A61P31/12
Filed: 1997-04-22
Abstract: Novel water-soluble C-ring analogues of 20(S)-camptothecin having general formula (1). All the compounds of formula (I) are prepared from the compounds of general formula (2) having 20(S)-chiral carbon where R1 to R5 have the meaning given above. The compounds of formula (1) possess potent anti-cancer and anti-viral properties.  The invention also provides an alternate process for the preparation of known C-5 substituted compounds of formula (1).
Patent CA-2228851-A1 (CA)
Inventor: MORK JOHN
IPC: B62D55/28
Filed: 1998-02-05
Abstract: The invention relates to a vehicle track for tracked vehicles intended for use in all types of terrain, both hilly terrain and in wetlands and on different types of ground surfaces, such as asphalt, concrete, gravel, sand, stone, snow and ice. The track (10) includes one or more endless traction elements (12) made of an elastomeric material,  and cross-ribs  (11) which are spaced apart generally equidistantly and extend transversely and outwardly from the traction element  (12). The cross-ribs are intended for contact with the ground when moving the vehicle, wherewith at least those parts of the cross-ribs (11) which come into contact with the ground are comprised of a polymeric material (27) which is firmly held and supported by a flexurally rigid support device (26). The vehicle track is characterized in that the support device (26) is comprised of a fully closed profile construction, and in that the polymeric material (27) is applied to the outside of said profile construction. The profile construction (26) is conveniently produced from a material chosen  from the group: high-quality steel, aluminium, magnesium or composite material,  although preferably  from a boron-alloyed, high-strength steel. The polymeric material (27) in the cross-ribs (11)  is  suitably pressed-moulded  around  the  fully closed profile construction (26).
Patent CA-2230060-A1 (CA)
Title: Guiding system
Inventor: GRANBOM BO
IPC: F16C29/04
Filed: 1997-06-27
Abstract: A guiding system for guiding a slide (3) for movement along a guide means (1) that includes a longitudinally extending cavity (2) in which part of the slide is accommodated for guiding the slide in its movement in the guide means. At least three roller guides (11), for instance in the form of a roller-carrying band (16), are disposed along the cavity (2) in the guide means (1) and run between the slide (3) and the guide means (1). The system also includes a slide-coacting roller race (13) which is biassed towards the roller guide (11), and therewith towards the guide means (1), by a spring device (12).
Patent CA-2230484-A1 (CA)
Inventor: BELTER RANDOLPH K
IPC: C07C17/00
Filed: 1996-05-13
Abstract: La présente invention concerne un procédé de préparation d'une oléfine aliphatique fluorée représentée par la formule: CH¿a?F¿3-a?-CH¿2?-CH¿b?F¿3-b? dans laquelle a représente 0 ou un entier valant 1 ou 2, et b représente 0 ou un entier valant 1, 2, ou 3. La première opération du processus consiste à faire réagir un hydrocarbure oléfinique chloré représenté par la formule: CH¿c?-Cl¿2-c?=CH-CH¿d?Cl¿3-d? dans laquelle c représente 0 ou un entier valant 1 et d représente 0 ou un entier valant 1 ou 2, avec un fluorure d'hydrogène anhydre, pendant une durée et à une température suffisantes pour former une oléfine fluoro-chlorée représentée par la formule: CH¿e?Cl¿2-e?=CH-CH¿f?F¿3-f? dans laquelle e représente 0 ou un entier valant 1 et f représente 0 ou un entier valant 1 ou 2. L'oléfine fluoro-chlorée obtenue par la première opération est mise ensuite à réagir avec du fluorure d'hydrogène anhydre au cours d'une seconde réaction. Cette réaction utilise comme catalyseur au moins un composé constitué d'oxyde de métal ou d'halogénure de métal. On peut également utiliser des mélanges de tels oxydes de métal, d'halogénures de métal et d'oxydes de métal avec des halogénures de métal. La partie métallique d'un tel composé est l'arsenique, l'antimoine, l'étain, le bore ou est un métal choisi parmi ceux des groupes IVb, Vb, VIb, VIIb ou VIIIb du Tableau Périodique des Eléments. Le procédé consiste ensuite à séparer et récupérer l'hydrocarbure oléfinique fluoré voulu. Ce procédé convient particulièrement à la préparation de 1,1,1,3,3-pentafluoropropane.
Patent CA-2232035-A1 (CA)
Title: Dispersion aqueuse de liant utlisee pour la production de revetements a brillance elevee et a jaunissement a peine marque
Inventor: RINK HEINZ-PETER
IPC: C08G18/42
Filed: 1996-08-17
Abstract: L'invention concerne un liant (BM) pour des systèmes de vernis à un composant renfermant un composant polyuréthanne-résine alkyde (A) comprenant (a) 5 à 50 % en poids d'un mélange composé de (a1) 90 à 30 parties en poids d'un acide gras insaturé en C6 à C30, ayant au moins deux doubles liaisons non conjuguées, et (a2) 10 à 70 parties en poids d'un acide gras insaturé en C6 à C30, ayant au moins deux doubles liaisons conjuguées, comme chaînes latérales polymères estérifées du composant polyuréthanne-résine alkyde (A), et (b) 95 à 50 % en poids de motifs polyuréthanne, comme chaînes principales polymères du composant polyuréthanne-résine alkyde (A).
Patent CA-2232785-A1 (CA)
Inventor: SUGA SHIGENORI
IPC: C12P19/26
Filed: 1998-03-20
Abstract: Highly purified sodium hyaluronate having a low content of pyrogen is obtained by adding a salt and a water-soluble organic solvent to a solution containing sodium hyaluronate, or to a sodium hyaluronate solution previously filtered through a positively charged filter, precipitating and sedimenting the sodium hyaluronate and taking out a supernatant to remove pyrogen.
Patent CA-2233842-A1 (CA)
Inventor: SHIRAHASE HIROAKI
IPC: A61P9/10
Filed: 1996-09-30
Abstract: A heterocyclic derivative of the formula (I) (see formula I) wherein each symbol is as defined in the specification, and pharmaceutically acceptable salts thereof. The compound (I) of the present invention and pharmaceutically acceptable salts thereof exhibit superior ACAT inhibitory activity and lipoperoxidation inhibitory activity in mammals, and are useful as ACAT inhibitors and lipoperoxidation inhibitors. Specifically, they are useful for the prophylaxis and treatment of arteriosclerosis, hyperlipemia, arteriosclerosis in diabetes, and cerebrovascular and cardiovascular ischemic diseases.
Patent CA-2234422-A1 (CA)
Title: Process for lofty battings
Inventor: KWOK WO KONG
IPC: D04H1/06
Filed: 1996-10-08
Abstract: Lofty battings are prepared by a process involving carding to make one or more webs of fibers, preferably using a blend of mechanically-crimped filling fibers with bicomponent fibers of helical configuration, and that preferably also contains binder fibers, the fiber orientations preferably being randomized in the web(s) before cross-lapping to build up the batt, and preferably followed by spraying with resin and curing, thus providing a bonded batt in which the loft is improved by the presence of the different crimp configurations and/or randomized orientations that are fixed in the fibers in the bonded batt.
Patent CA-2234429-A1 (CA)
Title: Annealed carbon soot field emitters and field emitter cathodes made therefrom
Inventor: HOLSTEIN WILLIAM LEO
IPC: H01J1/304
Filed: 1996-11-13
Abstract: Annealed carbon soot is useful as an electron field emitter. Field emitting cathodes made up of annealed carbon soot attached to the surface of a substrate are also provided. The field emitters and field emitter cathodes are useful in vacuum electronic devices, flat panel computer and television displays, emission gate amplifiers, klystrons and lighting devices.
Patent CA-2234440-A1 (CA)
Title: Self skinning foams employing tertiary alcohols as blowing agents
Inventor: BROWN BARI W
IPC: C08J9/14
Filed: 1998-05-05
Abstract: The invention pertains to low weight, relatively low density semi-rigid and rigid self skinning polyurethane foams having improved surface hardness and reduced porosity over known water blown foams. The polyurethane foam includes an isocyanate component and an isocyanate reactive component including a blowing agent comprising water and at least one tertiary alcohol.
Patent CA-2237064-A1 (CA)
Title: Method of obtaining a gas-introduced fiber-reinforced resin injection molding and molding obtained by the same
Inventor: SATO ATSUSHI
IPC: B29C45/17
Filed: 1998-05-06
Abstract: The present invention is directed to a method of obtaining a gas-introduced fiber-reinforced resin injection molding and to a molding obtained by the method. According to the present invention, there can be obtained a lightweight gas-introduced fiber-reinforced resin injection molding containing glass fibers or like fibers having excellent rigidity and strength and improved surface properties. The method includes the steps of: injecting into a die a molten resin obtained through the plasticization of a molding material; and introducing gas into the molten resin, the molding material comprising fiber-containing thermoplastic resin pellets which contain reinforcing fibers having a length of 2 mm to 100 mm, the reinforcing fibers accounting for 5% to 70% by weight of the molding material, the die including a movable die capable of advancing into and retreating from the internal cavity of the die, wherein after the injection of the molten resin into the die cavity is started, the movable die is retreated to a position where the die cavity assumes a volume corresponding to the molding, and gas is introduced into the molten resin filling the die cavity.
Patent CA-2237382-A1 (CA)
Title: Substituted 6- and 7-amino-tetrahydroisoquinolinecarboxylic acids
Inventor: SCHUDOK MANFRED
IPC: C07D217/26
Filed: 1998-05-12
Abstract: Substituted 6- and 7-aminotetrahydroisoquinolinecarboxylic acids Compounds of the formula I                                    are suitable for the preparation of pharmaceuticals for the prophylaxis and therapy of disorders in the course of which an increased activity of matrix-degrading metalloproteinases is involved.
Patent CA-2239632-A1 (CA)
Inventor: RIEDEL JACK H
IPC: F42B7/08
Filed: 1998-06-01
Abstract: A one-piece shot cup (also commonly known as a shot pouch) designed especially for use in protecting the bore of a shotgun barrel when shooting hard shot made of a material such as tungsten or non-annealed steel. The cup is characterized by the use of shield members located opposite and outwardly of equally spaced tear lines which are defined by narrow areas of substantially weakened wall structure extending longitudinally of the cup. The shield members are connected to the wall structure of the tubular members only adjacent its closed rear end portion and are otherwise separate and free thereof.      Portions of the tubular members extend between the circumferentially spaced shield members. The shield members prevent the shot, which ruptures the tear lines, from damaging the bore of the shotgun barrel. They also aid in holding the shot in an improved aligned relation to thereby improve the shot pattern. They also aid in causing the shot cup to separate from the shot immediately after leaving the end of the barrel of the gun. The tapered wall thickness of the pouch is within the range of 0.060" at its front end and 0.080" at the rear end of the pouch.
Patent CA-2240233-A1 (CA)
Title: Traffic guide constructions at road intersections to provide smooth traffic flows and methods of traffic control thereof
Inventor: CHEN CHIEN-YUAN
IPC: E01C1/04
Filed: 1998-06-10
Abstract: Traffic guide constructions at road intersections to provide smooth traffic flows thereof and the methods of traffic control with these traffic guide constructions, The constructions mainly include overhead bridges and/or underground tunnels extending in parallel to a main road and one or more branch road intersecting with the main road to cross the intersections thereof so as to avoid traffic jams thereat. Cars may move on the main and the branch roads straight forward without being interrupted at the intersections. Cars moving on the main and the branch roads can make turns to either sides by using the tunnels under the overhead bridges or the turnarounds above the underground tunnels to avoid interfering with the cars moving straight forward and causing any traffic jams at the intersections. Such traffic guide constructions at road intersections do not need spacious land nor will them be affected by buildings around the intersections and are therefore suitable for different topographies and spaces to provide smooth traffic flows.
Patent CA-2240448-A1 (CA)
Inventor: CARDOLA SERGIO
IPC: C09K23/16
Filed: 1996-12-09
Abstract: Cette invention concerne des émulsions aqueuses qui comportent un ingrédient liquide hydrophobe ou des mélanges d'ingrédients de ce type, un tensioactif hydrophobe et un tensioactif d'oxyde d'amine. Lesdites émulsions s'avèrent utiles s'agissant de l'apport sous forme d'émulsion stable d'agents du type activateurs de blanchiment, agents de blanchiment, parfum, solvant, agents chélateurs enzymatiques et polymères.
Patent CA-2243554-A1 (CA)
Title: Low-density polymeric composition
Inventor: WHITELEY RICHARD HAROLD
IPC: H01B3/00
Filed: 1997-02-20
Abstract: A low-density polymer composition and use thereof in undersea flotation cables and the like, the composition comprising by volume based on the whole composition, (a) at least 30 % of a polymer component consisting of (i) thermoplastic polyolefin elastomer of room temperature density less than 0.9 g/cc and/or (ii) thermoplastic olefin/(ester or acid) copolymer elastomer, and (b) at least 30 % of micro-balls of room temperature density less than 0.6 g/cc, at least 80 %, preferably at least 90 %, more preferably at least 95 %, by weight, of the micro-balls having a maximum dimension less than 300 .mu.m, preferably less than 200 .mu.m. Preferred elastomers are metallocene-catalysed olefin copolymers of density 0.86-0.88 g/cc, and micro-balls of diameters 1045, preferably 10-34, micrometers are advantageous in resisting pressures up to 50 MPa (5 km under sea).
Patent CA-2245174-A1 (CA)
Title: Treatment of contact lenses with an aqueous solution including sulfobetaine compounds
Inventor: GROEMMINGER SUZANNE F
IPC: C11D1/92
Filed: 1997-01-30
Abstract: The present invention provides methods for treating contact lenses and compo-sitions for the same. The present invention includes contacting a lens with an aqueous solution comprising a sulfobetaine compound represented by formula (I) wherein: R1 is an alkyl group having from 8 to 30 carbon atoms, R2 and R3 are individually hydrogen or alkyl groups having from 1 to 4 carbon atoms, and R4 is an alkyl group having from 2 to 6 carbon atoms. In preferred embodiments of the invention, the subject compounds are used in combination with antimicrobial agents for providing simultaneous disinfection and cleaning of contact lenses.
Patent CA-2245805-A1 (CA)
Title: Multilayered metal stent
Inventor: RICHTER JACOB
IPC: A61F2/06
Filed: 1998-08-25
Abstract: Coated stents for increased radiopacity. In one embodiment, the present invention includes a stent in the form of a tubular member comprising struts of a first material, and a first coating on the tubular member. The first coating substantially covers the tubular member and is substantially uniform in thickness. The first coating comprises a second material that is more radiopaque than the first material. In another embodiment, the stent further comprises a second coating between the tubular member and the first coating, wherein the second coating covers only a portion of the tubular member. In yet another embodiment, the stent is a coated bifurcated stent for positioning in a bifurcated body lumen.
Patent CA-2247687-A1 (CA)
Title: Coherent optical communication system
Inventor: FRIGO NICHOLAS J
IPC: H04B10/272
Filed: 1998-09-21
Abstract: A coherent optical system includes an optical coupler or combiner for combining a received upstream optical signal and an optical local oscillator signal. The coherent optical system further includes a coherent optical receiver which is configured to receive and process the combined optical signal from the optical coupler to retrieve upstream information from the upstream optical signal. In certain embodiments, the coherent optical communication system includes a central office having an optical source for generating a composite downstream optical signal made up of downstream optical signals of particular wavelengths (or sets of wavelengths). A downstream optical signal having a particular wavelength (or set of wavelengths) is routed to a downstream destination with a portion of the downstream optical signal (after modulation with upstream information) being returned to the central office as an upstream optical signal of the particular wavelength (or set of wavelengths) which is part of a composite upstream optical signal. At the central office, the optical coupler or combiner combines the received upstream optical signal and the optical local oscillator signal, and the coherent optical receiver processes the combined optical signal. The optical source for generating the local oscillator signal. Thus, the coherent optical system can alleviate the problems and costs associated with generating the local oscillator signal because the same or s a similar source is readily available. Using the same or similar optical source to generate the downstream optical signals and the local oscillator system permits an increase in capacity without the additional cost of wavelength-registered and stabilized optical sources at the subscriber locations.
Patent CA-2248643-A1 (CA)
Inventor: GROSS JEFFREY M
IPC: A61F2/24
Filed: 1997-03-25
Abstract: A whole heart is collected shortly after the death of the animal. The left ventricle and left atrium of the animal heart is sectioned and exposed thereby exposing the mitral valve, the chordae tendineae and the papillary heads. The mitral valve is fixed in situ by fixing portions of the left ventricle and left atrium containing the mitral valve. The mitral valve is excised from the animal heart remnant to include a portion of the endocardium containing the papillary heads and the annulus. In the preferred embodiment of the invention, the excised mitral valve is further fixed to complete fixation of the papillary heads. Then, the excess myocardial tissue is trimmed away and the mitral valve is stored in fixing solution to await further processing.
Patent CA-2248751-A1 (CA)
Inventor: WILLIAMS J TERRELL
IPC: B07B13/16
Filed: 1998-09-29
Abstract: A bypass diverter box disposed upstream from conventional solids control equipment of a mud system of a drilling rig contains a drilling mud separation unit having a continuous-loop scalper screen that is driven in a continuous loop to separate, convey and discharge large amounts of gumbo, heavy clays and drill solids at the end of the separation unit. The flow divider box is a box-like housing with a verter plate, upper and lower baffle plates and a grate that allows drilling fluid or drilling mud to be selectively directed to the mud separation unit to be separated prior to passing to the conventional downstream solids control equipment or allows the fluid to bypass the separation unit and flow directly to the conventional solids control equipment. The bypass diverter box baffle plates, diverter plate and grate, and selective utilization of the mud separation unit removes large amounts of gumbo, heavy clays and drill solids from the drilling mud and allows high flow rates to be easily processed by shale shakers and other conventional downstream solids control equipment of the mud system and compliments the drilling operations with respect to changes in the lithology, geological formations, or loss of returns in relation to the gallons pumped or folume of drilling fluid or drilling mud entering the bypass diverter box.