baber/WOPTO huggingface dataset:
Patent CA-2226850-A1 (CA)
Title: Process for the recovery of caprolactam from waste containing nylon
Inventor: FRENTZEN YVONNE HELEN
IPC: C07D201/16
Filed: 1996-07-11
Abstract: A process for depolymerizing nylon (6) and recovering caprolactam from the depolymerized products by extraction with alkyl phenolic compounds. Process steps include (a) treating a first mixture comprising nylon (6) with water at a temperature between about 200 ~C and about 400 ~C to yield a second mixture comprising depolymerized nylon (6) components, wherein the second mixture contains caprolactam at a concentration between about 5 wt.% and about 35 wt.%; (b) optionally, separating insoluble material from the second mixture;  (c) extracting the second mixture with an extraction agent to yield an aqueous raffinate third mixture and an organic phase fourth mixture comprising caprolactam and the extraction agent, wherein the extraction agent is an alkyl phenol having a boiling point higher than that of the caprolactam; (d) recovering caprolactam from the organic phase fourth mixture by distillation;  (e) recycling the aqueous raffinate third mixture to step (a).
Patent CA-2227625-A1 (CA)
Title: Method of preparing dinitramidic acid and salts thereof
Inventor: WINGBORG NIKLAS
IPC: C01B21/082
Filed: 1996-07-26
Abstract: The invention relates to a method of preparing dinitramidic acid HN(NO2)2 and salts thereof having the formula M+n(-N(NO2)2)n, wherein M is a metal cation or a nitrogen-containing cation and n = 1-3. The dinitramide salt can be used as oxidiser in solid propellants.  Dinitramidic acid is prepared by nitration of a compound selected from a group consisting of NH2NO2, NH4NH2CO2; NH2SO3H, NH(SO3H)2, N(SO3H)3, and its salts with metal cations or organic cations, e.g.  NH(SO3NH4)2, and other products formed when ammonia is reacted with sulphuric trioxide, with a common nitrating acid such as nitric acid/sulphuric acid or nitric acid/acetic anhydride. The invention also relates to a method of preparing dinitramide salt, comprising neutralisation of dinitramidic acid with a neutralising agent, e.g.  ammonia, and recovery of the dinitramide salt from a mixture of salts formed in the neutralisation. An aqueous solution of the salt mixture is passed through a column containing an adsorbing agent which adsorbs the dinitramide salt and is selected from a class consisting of activated carbon, silica gel and zeolites. The dinitramide salt is eluted with an elution agent consisting of hot water and/or a polar organic solvent, e.g. acetone, acetonitrile, 2-propanol and other lower alcohols and mixtures thereof.
Patent CA-2230215-A1 (CA)
Inventor: SALZMAN DONALD F
IPC: F16H55/38
Filed: 1998-02-20
Abstract: A split transport wheel is described including first and second wheel halves, each having an arcuate external tire receiving surface spanned by a joint surface. The two halves may be selectively assembled with the joint surfaces in juxtaposition and with the tire receiving surfaces forming a relatively continuous tire receiving surface. A clamp assembly releasably joins the first and second wheel halves and is selectively operable to (a) draw the respective joint surfaces together in juxtaposition and (b) release the first and second wheel halves to be separated. A tire, formed of a strip of tire material, may be releasably wrapped about the tire receiving surfaces of the wheel halves. A first tire end anchor on the first wheel half releasably receives one of the strip ends, anda second tire end anchor on the second wheel half releasably receives the remaining tire strip end. The tire end anchors are positioned inwardly adjacent the first end of each joint surface to receive and clamp the strip ends responsive to operation of the clamp assembly to draw the respective joint surfaces together.
Patent CA-2230901-A1 (CA)
Title: Drilling and bolting apparatus for tunnelling and tunnel propping
Inventor: RIBERON YVES
IPC: E21D20/00
Filed: 1996-09-23
Abstract: An apparatus (1) comprising a beam (2), a bolting device (4) with a bolt magazine (10), means for inserting bolts into a borehole, a drilling jar (5), a drill (6) with a drill bit (7), and control means (15) for controlling the drilling jar (5) sliding on the beam (2). Said beam is mounted on the end of an articulated arm. The beam (2) is fixed to the end of the articulated arm, the magazine (10) is slidable relative to the beam (2), and the apparatus (1) comprises means for locating the drill bit (7) and a computer for delivering a bolt from the magazine (10) to a position aligned with a borehole, with the relative positions of the borehole and the magazine compartments being stored in a memory.
Patent CA-2232001-A1 (CA)
Title: Methods and compositions for prevention and treatment of clostridium difficile-associated diseases
Inventor: GERDING DALE N
IPC: A61K35/74
Filed: 1996-09-13
Abstract: The invention provides methods and compositions for preventing and treating Clostridium difficile-associated disease in a subject, wherein the subject is either a human or a non-human animal. The method comprises administering to the subject an effective amount of a non-toxigenic strain of C. difficile or a combination of strains. A suitable non-toxigenic strain is selected from the M, T, C, P, S and AP group as defined by restriction endonuclease analysis.  Also provided are pharmaceutical compositions and unit dosage forms comprising a single strain or a combination of strains selected from a non-toxigenic C.  difficile group and a method for selecting non-toxigenic C. difficile strains.
Patent CA-2232293-A1 (CA)
Title: Inflatable gas bag and method for manufacturing same
Inventor: RYCHTER JOSEF
IPC: B29C65/08
Filed: 1996-09-23
Abstract: The invention relates to an inflatable gas bag (10) for an occupant restraint system of a vehicle, in particular of a motor vehicle. In order to avoid the formation of creases in the inflated state, which occurs with conventional gas bags and in order to be able to employ more lightweight textile materials for the manufacture of a gas bag, the gas bag (10) consists of a multilayered textile composite material which comprises at least one layer of a textile material and one layer of a polymer material whose melting range is lower than the melting range of the textile material. The textile composite material is formed into a specified three-dimensional shape which is to develop during inflation of the gas bag (10), and the individual layers of the textile composite material are joined together in this three-dimensional shape.
Patent CA-2235639-A1 (CA)
Title: Hockey puck shooting range
Inventor: BELLEISLE MERRITT E
IPC: A63B69/40
Filed: 1998-04-23
Abstract: A hockey puck shooting range including a planar surface for accommodating sliding movement of hockey pucks; a collection system disposed at a peripheral edge portion of the planar surface and arranged to collect hockey pucks propelled off the planar surface at the peripheral edge portion; and an ejection mechanism for sequentially ejecting hockey pucks onto the planar surface. Also included is a conveyor system for conveying to the ejection mechanism hockey pucks collected by the collection system. The range significantly enhances the effectiveness of puck shooting practice. The range includes a hockey net disposed along the peripheral edge portion and the collection system collects hockey pucks received by the hockey net.
Patent CA-2237520-A1 (CA)
Inventor: YOSHIKAWA MUNEHIRO
IPC: H04Q11/04
Filed: 1998-05-11
Abstract: Prior to communication over the Internet and using a different line, a first terminal transmits to a second terminal a set of information including at least an IP address of the first terminal on the Internet. Based on the IP address thus transmitted separately, the party at the second terminal initiates communication over the Internet. This establishes direct end-to-end communication between the two terminals over the Internet. In a communication setup such as an Internet-based telephone call wherein address information about a desired party on the network is not previously known to a calling party, the inventive method allows the two parties to communicate directly with each other over the network on an end-to-end communication basis without recourse to a rendezvous server or like services.
Patent CA-2241397-A1 (CA)
Inventor: ANDERSON DENISE DR
IPC: C11D3/20
Filed: 1998-06-22
Abstract: The carbonates of formula I       deliver aldehydes and/or ketones in the presence of skin bacteria,  enzymes or acidic or alkaline conditions.  One carbonate  molecule  can  provide  one  or  more  different compounds.
Patent CA-2243473-A1 (CA)
Title: Vetement deux pieces avec poches amovibles
Inventor: HARDY PHILIPPE
IPC: A41D27/20
Filed: 1998-08-20
Abstract: Un vêtement composé de deux pièces qui sont assemblées par une fermeture à glissière reliant la taille du pantalon à une bande élastique à l'intérieur du manteau, et cette bande présente plusieurs fermetures à glissière sur différents niveaux. Les poignets du manteau sont munis de protecteurs avec des ajustements. Le col du manteau présente deux fermetures à glissière dont l'une ouvre complètement à l'avant du manteau et la seconde plus courte permettent d'ouvrir le col pour une meilleure aération. Des parties fixées à l'avant possèdent des poches amovibles qui peuvent être fixées sur un autre vêtement possédant le même système d'attaches.
Patent CA-2255317-A1 (CA)
Inventor: WANG XIAORONG
IPC: C08F222/08
Filed: 1998-12-09
Abstract: The instant invention relates to poly(maleimide-co-alkenyl benzene) centipede polymer and a method for producing the polymer by reacting a poly(alkenyl benzene -co-maleic anhydride) in the presence of a primary amine in a substantially dry state. The invention is further directed to a process for blending the poly(maleimide-co-alkenyl benzene) centipede polymer with elastomeric polymers, in combination with, or in substitution of, conventional extender oils, to produce extended polymers having improved properties such as tensile strength, maximum elongation, tear strength, damping properties, and the like.
Patent CA-2256066-A1 (CA)
Inventor: PINO LOCILLO G
IPC: H04M3/42
Filed: 1998-12-11
Abstract: An intermediate layer of switch service management between a number portability administration centre and a switch selects those ported telephone numbers for in switch-based ported number routing, thus greatly improving the efficiency of number portability.
Patent CA-2259436-A1 (CA)
Title: Child resistant closure
Inventor: DEUBEL DONALD P
IPC: B65D55/16
Filed: 1997-07-29
Abstract: A child resistant closure including a container (16) and a cap (21). The container includes a body portion (11) defining a chamber, and a hollow neck (10) extending from the body portion. The cap is formed to fit around the neck and includes a base portion (20) and a lid portion (30) connected to the base portion with a hinge (60). At least one first engagement portion (42) extends from a lever portion (24) attached to the base portion, and is positioned to engage at least one second engagement portion (52) that is integrally formed in the lid portion. The engagement portions are located off set from a location diametrically opposite the hinge. The closure is in a locked position when the first engagement portion engages the second engagement portion. The closure is moved to an unlocked position when the lever portion is pushed inwardly to disengage the first portion from the second portion.
Patent CA-2261937-A1 (CA)
Inventor: GIBBS MITCHELL W
IPC: A01K63/00
Filed: 1997-08-04
Abstract: A rotating aquarium (10) for use with live fish and particularly live corals, including a canopy (12) with light fixtures (14), a tank (16) having a central core (18), a turntable (20) including an electric motor (22) for rotating the tank (16), and a base (24) for supporting the tank (16). The central core (18) includes an electrical conduit (32) for transporting electrical wires to the light fixture (14) in the canopy (12). The central core (18) also includes a water pipe (39) that is connected to a reservoir (40) mounted within the base (24) of the aquarium (10). The reservoir (40) includes a pump (44) that circulates water throughout the aquarium (10). The tank (16) rotates about the central core (18) via the turntable (20) and the electric motor (22). As the tank (16) rotates, the fish and living coral receive light at different angles and receive superior water circulation. The aquarium (10) of this invention therefore provides an environment more like the ocean for the animals living therein.
Patent CA-2262888-A1 (CA)
Title: Method for triggering oxygen scavenging material as a wall component in a container
Inventor: MIRANDA NATHANAEL R
IPC: B65D81/26
Filed: 1997-07-30
Abstract: A method for triggering an oxygen scavenging component of a container (10) for packaging an oxygen sensitive material includes the steps of providing a container (10) defining an internal space and having an internal oxygen scavenging component including an oxidizable organic compound and, optionally, a transition metal catalyst, exposing said oxygen scavenging component to a source of actinic radiation, positioned within said internal space, at a wavelength, intensity, and residence time so as to provide a dose of actinic radiation sufficient to activate said oxygen scavenging component, and packaging an oxygen sensitive material in the internal space of the container whereby the oxygen scavenging compon ent scavenges the oxygen from the internal space of the container. An apparatus and packaging system are also disclosed.
Patent CA-2263676-A1 (CA)
Inventor: TRAN JIMMY CUONG
IPC: H03H17/02
Filed: 1997-08-20
Abstract: A spread spectrum matched filter for use with a spread spectrum receiver comprising a first plurality of shift registers (131), a second plurality of shift registers (132), a control processor (138), a multiplexer (133), a plurality of data shift registers (134), a plurality of exclusive-OR (XOR) gates (135), an adder tree (136), a memory (137), and an adder (139). The first plurality of shift registers (131) stores a first portion of a referencechip-sequence signal and the second plurality of shift registers (132) stores a second portion of the reference-chip-sequence signal. The multiplexer (133), responsive to the control processor (138), outputs the first portion during a first clock cycle and the second portion during a second clock cycle. The plurality of XOR gates (135) multiply the first portion, during a first clock cycle, by a plurality of input-data-samples shifted through the data shift registers (134) to generate a first plurality of product-output signals. The plurality of XOR gates (135) multiply the second portion by a plurality of input-data-samples shifted through the data shift registers (134) to generate a second plurality of product-output-signals. The adder tree (136) adds the first plurality of product-output signals as a first sum which is stored in the memory (137). The adder tree (136) adds the second plurality of productoutput signals as a second sum. The adder (139) adds the first and second sums.
Patent CA-2264077-A1 (CA)
Title: Method and apparatus for location finding in a communication system
Inventor: BUFORD KEVIN A
IPC: G01S5/12
Filed: 1997-08-27
Abstract: A method for determining a subscriber unit location in a communication system including the steps of receiving a signal from the subscriber unit (1390) at a first base station, determining a first receive time of the signal based on a sequence of spreading symbols at the first base station, determining a first angle of arrival of the signal at the first base station, and determining the location of the subscriber unit from the first received time, the first angle of arrival, and further predetermined information about the first base station. The signal is formed via modulation by the sequence of spreading symbols.
Patent CA-2266172-A1 (CA)
Inventor: WYGENT MARK A
IPC: G10D9/02
Filed: 1999-03-18
Abstract: One particular design for providing a substitute to a cane reed incorporates a wood-based, polymer body (the tube), two thin plastic tongues, regulated by a short length of synthetic tubing (the bridle). A brass or plastic tube is screwed or pressed in one end to form the "seat" of the reed, or that portion which is pressed into the bagpipe itself. An opposite end of the tubular body includes a tuning pin to change a pitch of the reed. The bagpipe reed is fashioned from a hollow tube as a body, threaded or tapered at both ends to provide for the use of a threaded or tapered plug (tuning pin) at either end, employed to adjust airflow and pitch. The tuning pin is a socket headed cap screw having external threads at one end and an enlarged, knurled head at the opposite end. The head includes a hexagonal shaped opening for rotation of the tuning pin into and out of the tubular body by an alien wrench. The opposite end of the tubular body includes a threaded and tapered reed seat or moveable insertion base for the reed. The reed seat may be externally threaded at one end and include wrapped waxed threads in a tapered, conical configuration at the opposite end. The reed seat is moulded to include a plurality of ridges to assist in gripping waxed thread wrapped around the reed seat.
Patent CA-2268675-A1 (CA)
Inventor: FREUND BURKHARD
IPC: C09C1/50
Filed: 1999-04-08
Abstract: Inversion carbon blacks and a method for their manufacture and disclosed. The inversion carbon blacks have a smaller rolling resistance with identical or improved wet sliding behavior. The particle size distribution contains a smaller proportion of particles with large diameters. This leads to an improved abrasion behavior of rubber compounds which were prepared using these carbon blacks. The inversion carbon blacks can be manufactured in conventional carbon black reactors by controlling the combustion in the combustion chamber in such a manner that carbon black nuclei form, which are immediately brought into contact with the carbon black raw material. The carbon blacks present a lower proportion of larger particles if the additions of combustion air and carbon black raw material are increased in an appropriate manner.
Patent CA-2272384-A1 (CA)
Inventor: KURUCZNE RIBAI ZSUZSANNA
IPC: C07D317/54
Filed: 1997-11-12
Abstract: The subject of the invention is the process for the preparation of mixed ethers of general formula (I), wherein Ar represents an alicyclic, aromatic or one or more heteroatom-containing heterocyclic moiety, optionally substituted by one or more C1-4 alkoxy, methylenedioxy, C1-4 alkyl, halogen, C1-4 haloalkyl or nitro-group, and/or condensed with a benzine ring, R1 and R2 independently mean hydrogen C1-4 alkyl, C1-4 haloalkyl, C2-4 alkenyl, phenyl, substituted phenyl, C3-6 cycloalkyl group, R3 means C1-6 alkyl, C3-6 alkenyl, or C3-6 alkynyl group, optionally substituted by one or more C1-6 alkyl, C3-6 alkenyl, C3-6 alkynyl, C1-6 haloalkyl group, or halogen atom; or a C1-4 alkyloxy-C1-4 alkyloxy-C1-4 alkyl group characterized by, that the compounds of general formula (II), wherein X means hydroxy, halogen or sulphonester leaving group, are reacted in the presence of acid, Lewis acid, metal oxide or metal carbonate, with 1-3 molar equivalent of the alcohol of general formula (III), wherein the meaning of the substituent is as defined above, the resulting ether of general formula (I) is isolated, if desired, stabilized by the addition of a base and/or an anti-oxidant, and if desired the excess of the alcohol is recovered.
Patent CA-2276029-A1 (CA)
Inventor: PETERS DAVID
IPC: A61K8/89
Filed: 1998-10-29
Abstract: The present invention relates to an anhydrous makeup composition for topical application to the skin, the composition comprising (a) a silicone gel, the gel comprising an organopolysiloxane elastomer dispersed in a silicone-compatible vehicle, (b) and a silicone-oil base. The compositions of the invention produce a matte or non-shiny appearance when applied to the skin.
Patent CA-2276184-A1 (CA)
Inventor: MELAMED ELDAD
IPC: C07K5/02
Filed: 1997-12-23
Abstract: Novel brain targeted low molecular weight, hydrophobic antioxidants and use of antioxidants in treatment of central nervous system neurodegenerative disorders such as Parkinson's, Alzheimer's and Creutzfeldt-Jacob's diseases and in treatment of conditions of peripheral tissues, such as acute respiratory distress syndrome, amyotrophic lateral sclerosis, atherosclerotic cardiovascular diseases and multiple organ dysfunction, in which oxidants are overproduced.
Patent CA-2276199-A1 (CA)
Title: Image data conversion processing device and information processing device having the same
Inventor: AOKI YOICHI
IPC: H04N7/01
Filed: 1993-08-17
Abstract: An image data conversion processing device including an issue unit (8), plural line storing units (3) and a generating unit (4) for converting to a television signal image data stored in plural kinds of developing formats in a storing unit. The image data comprises plural lines, and the television signal comprises a predetermined number of lines. The issue unit issues a transmission instruction of image data to the storing unit in accordance with a period specified by a ratio of the line number of the image data to be converted and the line number of the television signal. The plural line storing units cyclically stores the image data transmitted from the storing unit line by line on the basis of the transmission instruction of the issue unit. In synchronism with the horizontal synchronizing signal of the television signal, the generating unit multiplies the image data stored in the line storing unit by an interpolative coefficient corresponding to the developing format of the image data to be converted in the plural interpolative coefficients which are beforehand set for the plural kinds of developing formats, thereby generating the television signal.
Patent CA-2276995-A1 (CA)
Title: Method for coupling deck floors to foundation
Inventor: VINCENT IRVIN
IPC: E02D27/00
Filed: 1999-07-08
Abstract: A method, and product produced by said method, of fastening flooring materials to a foundation structure so as to accommodate dimensional changes in the flooring material is herein described. The method is herein described. The method involves using a substantially resilient adhesive to secure the flooring materials to a foundation structure.
Patent CA-2278002-A1 (CA)
Inventor: O'HARE PETER FRANCIS JOSEPH
IPC: A61P37/04
Filed: 1998-01-23
Abstract: La présente invention concerne des polypeptides couplés et des polypeptides hybrides permettant le transport intracellulaire, ainsi que leur préparation et leur utilisation. Lesdits polypeptides contiennent (i) une séquence d'acides aminés dotée de la fonction de transport de la protéine du virus de l'herpès VP22 (ou d'un homologue provenant par exemple du virus varicelle-zona, du virus-herpès bovin ou du virus MDV) et (ii) une autre séquence de protéine sélectionnée à partir de (a) protéines permettant la régulation du cycle cellulaire; (b) de protéines suicide; (c) de séquences antigéniques ou de protéines antigéniques provenant d'antigènes microbiens et viraux et d'antigènes tumoraux; (d) de protéines immunomodulatrices; et (e) de protéines thérapeutiques. On peut utiliser les protéines couplées pour l'administration intracellulaire de séquences de protéines (ii), pour exercer la fonction effectrice correspondante dans la cellule cible, et on peut exprimer les polypeptides hybrides à partir des polynucléotides, vecteurs et cellules hôtes correspondants.