baber/WOPTO huggingface dataset:
Patent CA-2119703-A1 (CA)
Title: Sulfur dioxide regeneration of superacid catalyst
Inventor: HOLLSTEIN ELMER J
IPC: B01J38/12
Filed: 1994-03-23
Abstract: A process for regeneration of spent sulfated and calcined solid superacid catalyst is disclosed. Said process comprises heating said catalyst to a temperature of approximately 450°C and contacting said catalyst with a gas stream comprising oxygen or air and sulfur dioxide. This regeneration process can be performed in situ.
Patent CA-2119746-A1 (CA)
Inventor: CASSIDY STEPHEN A
IPC: G02B6/34
Filed: 1992-10-01
Abstract: An optical amplifier comprises an erbium-doped, silica-based optical fibre (6) coupled to a second optical waveguide, comprising a fibre (4) having a D-shaped cross-section. The second optical waveguide (4) has an overlaid grating (10) formed on a silica wafer (9) which is constructed and configured so that the waveguide filter provides loss in transmission substantially at the wavelength of the gain peak of the amplifier. The resonant reflection wavelength is chosen to be substantially equal to, or greater than; the wavelength of the gain peak of the amplified gain spectrum.  Transmission losses at wavelengths shorter than the resonant reflection wavelength of the grating act to reduce the gain peak thereby flattening the gain spectrum of the amplifier so providing a larger useful gain bandwidth for optical fibre systems having a cascade of such fibre amplifiers.
Patent CA-2122343-A1 (CA)
Title: Absorbent Article with Comfortable and Rapid Acquisition Topsheet
Inventor: SUGAHARA KAZUKO
IPC: A61F13/49
Filed: 1992-11-06
Abstract: An absorbent article such as a sanitary napkin, having an improved topsheet that provides improved skin comfort as well as superior fluid handling characteristics. Such absorbent articles comprise a main body portion preferably comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet. The main body portion has longitudinal edges and lateral edges. The topsheet has a central zone and a pair of end zones extending laterally outwardly from and contiguous with the central zone. The topsheet comprises an nonwoven outer layer and an apertured thermoplastic film layer. The nonwoven outer layer has an opening positioned in the central zone. The apertured thermoplastic film layer is positioned beneath the nonwoven outer layer so that the apertured thermoplastic film layer and the nonwoven outer layer covers the end zones while the apertured thermoplastic film layer is exposed through the opening of the nonwoven outer layer in the central zone.
Patent CA-2122510-A1 (CA)
Title: Reversible door hinge and method
Inventor: HERBST WALTER
IPC: E06B1/52
Filed: 1994-04-29
Abstract: A kit including a full door piano hinge and frame mount for one lateral edge of a door is disclosed.  Door edge trim for mounting on the closing side of the door may be optionally employed.   While the hinge and frame mount are integral, they are reversible and hence can be positioned on either side of a door prior to mounting in the door jamb and frame.  The latch assembly is then applied to either the left or the right-hand side depending upon how the door is hinged and hung.   More specifically the hinge is provided with a plurality of holes in one of its leaves which permits the same to be secured to one lateral edge of the door with screws already in place awaiting the placement of the hinge.  In one embodiment of the method, taken in conjunction with the door of United States Patent No. 4,311,183, the lateral edge screws are relieved by one to two turns from the hinge side.  The hinge leaf mounting surface is provided with keyhole slots which are positioned against the shank of the relieved screw.      Thereafter the screws are re-tightened.  The latch and handle are then installed after boring a hole through the door to accept the actuating shaft.
Patent CA-2123201-A1 (CA)
Title: Alkyl and/or alkenyl oligoglycoside isethionates
Inventor: WEUTHEN MANFRED
IPC: C07H15/04
Filed: 1992-10-30
Abstract: The invention concerns alkyl and/or alkenyl oligoglycoside isethionates prepared by reacting with salts of vinyl sulphonic acid, at elevated temperature and in the presence of basic compounds, alkyl and/or alkenyl oligoglycosides of the formula (I):  R1O-[G]p, in which R1 is a straight-chain or branched-chain aliphatic hydrocarbon group with 6 to 22 carbon atoms and 0, 1, 2 or 3 double bonds, G is a glucose unit with 5 or 6 carbon atoms and p is a number between 1 and 10. The products exhibit marked surface-active characterictics.
Patent CA-2132104-A1 (CA)
Title: Arrangement on a dental suction implement
Inventor: TRAWOEGER WERNER
IPC: A61C17/06
Filed: 1993-04-01
Abstract: In a dental suction implement, a pourable additive is added to the mixture of solids and liquids sucked out of the mouth of the patient in the area of the mouthpiece (3) by means of a dosing device (9) constructively linked to a control device and associated to the hose storage unit (14). A supply channel (10) parallel to the suction channel (22) extends between the dosing device (9) and the admixing spot (11) in the mouthpiece (3).
Patent CA-2132953-A1 (CA)
Title: Monospecific polyclonal antibodies to shiga-like toxins
Inventor: KRIVAN HOWARD C
IPC: C07K16/12
Filed: 1993-03-25
Abstract: Disclosed herein are high titer, monospecific, polyclonal antibodies to Shiga-like toxins. Also disclosed are methods for producing such antibodies; compositions containing them, and methods for the diagnosis; prevention, and treatment of diseases caused by. Shiga-like toxins. These include hemiorrhagic colitis and hemolytic uremic syndrome in humans, edema disease in swine, and calf diarrhea in cattle:
Patent CA-2134078-A1 (CA)
Title: Device and methods for detaching and/or removing meat and the like from animal heads
Inventor: PASSCHIER BOB
IPC: A22C17/02
Filed: 1993-04-22
Abstract: 2134078 9320703 PCTABScor01 A boning apparatus for boning animal heads (2) comprising a conveyor (4) with a series of holders (3) and processing stations (1, 10, 20, 30, 40, 45, 50, 55, 60, 65, 70, 80, 85, 90) disposed along the conveyor. One or more stations comprises mechanically driven pin-shaped separating means (21, 36, 37, 51, 66) adapted to the shape of the animal head being processed.
Patent CA-2134847-A1 (CA)
Inventor: LUM SANFORD S
IPC: G09G5/36
Filed: 1994-11-01
Abstract: A method of operating a graphics accelerator draw engine containing registers comprised of saving a state of the registers (contexts) of the draw engine in a predetermined memory area of a memory, loading the draw engine from the memory with the context using a single processor write command, and executing an operation of the draw engine.
Patent CA-2137861-A1 (CA)
Title: Process for the production of structures
Inventor: SCHMIDT WALTER
IPC: H05K3/40
Filed: 1994-12-12
Abstract: The invention relates to a process for the production of printed circuit boards and film circuit boards from inter-mediates (Z), in which starting products (A) are used, which comprise plasma-etchable insulating material (2), coated on one or both sides with plasma etching-resistant conductor material (1, 3) and in this process in a first process stage openings (8, 8') are plasma-etched in the insulating material (2) in accordance with prepared openings (7, 7') in the conductor material (1, 3), so that projecting edges (9, 9') of the prepared openings (7, 7') are plasma back etched, so that the prepared openings (7, 7') and the openings (8, 8') are structured in planned back etched manner and then in a second process stage the projecting edges (9, 9') are chemically etched away, so that the prepared openings (7, 7') and the openings (8, 8') are structured in planned etch-back free manner, so that intermediates (Z) are formed for further plating on.
Patent CA-2138422-A1 (CA)
Title: High temperature resistant floating barrier
Inventor: LAZES RICHARD J
IPC: E02B15/04
Filed: 1994-12-19
Abstract: ABSTRACT OF THE DISCLOSURE    A high temperature resistant oil containment boom having a protective cover, the cover compris-ing, in laminar combination, an outer layer of high temperature  resistant  metallic  fabric,  a first underlayer of high temperature resistant insulation, a second underlayer of a polymer-coated fabric, a third  underlayer  of  high  temperature  resistant insulation and a bottom layer of a high temperature resistant polymer-coated material, the  protective cover being unified by having at least the top and bottom layers secured together along their periph-eral edges.
Patent CA-2142435-A1 (CA)
Title: Unsaturated carbohydrate derivatives, polymers thereof and their use
Inventor: BACHMANN FRANK
IPC: C08F20/36
Filed: 1995-02-13
Abstract: The present invention relates to polymerisable derivatives of carbohydrates comprising a compound of formula (I) R1-(COO-Alk)m-(OCONH-R)n-(NHCO)p-Y-Z               (I) wherein R1 is a radically polymerisable hydrocarbon group; m, n and p are 0 or 1; Alk is alkylene having up to 10 carbon atoms; R is a diradical, having up to 20 carbon atoms, of an organic diisocyanate; Z is a monovalent radical, minus a single hydroxy group, of a mono-, di- or tri-saccharide, of an oligosaccharide, of a cyclodextrin (CD) or of an anhydrosaccharide; and Y is -O- or-NH-; with the proviso that when p is zero, m and n are also zero and Y is -NH-; to homopolymers, copolymers, block copolymers, graft copolymers and polymeric networks thereof, to moulded articles, for example contact lenses or biomedicinal articles, comprising the mentioned polymers, as well as to processes for the preparation of the mentioned polymers and articles.
Patent CA-2144686-A1 (CA)
Title: Paper surface cleaning device
Inventor: TAKEUCHI HIDEO
IPC: B41F23/02
Filed: 1995-03-15
Abstract: A paper surface cleaning device for cleaning a surface of a printing paper running before being fed to a printing portion of a printing machine, which comprises a cleaning sheet having a water holding capacity in contact with the surface of the printing paper with a difference in running velocity between the printing paper and the cleaning sheet, a dampening roller which has, at its surface, a wettability so that water is attached to the surface of the dampening roller and which functions to push the cleaning sheet onto the surface of the printing paper, and a water pan into which the dampening roller is dipped partially. An even water film can be formed on the surface of the dampening roller to enable the cleaning sheet to get wet uniformly in its widthwise direction.
Patent CA-2145249-A1 (CA)
Title: Two-piece suture anchor with barbs
Inventor: LE THU A
IPC: A61B17/56
Filed: 1995-03-22
Abstract: A two-piece suture anchor is disclosed wherein a barrel-like main portion is provided with a pair of legs in a central opening. A ball-like actuating device is received within the central opening and drawn upward into the device in order to separate the legs and cause the device to expand into the soft cancellous bone of a previously prepared bone site.
Patent CA-2149201-A1 (CA)
Title: Method and system for forming an optical fiber microlens
Inventor: BONHAM HARRY B JR
IPC: G02B6/25
Filed: 1995-05-11
Abstract: A method and system for forming microlens (78) on an optical fiber (60) include optical fiber lensing device (10) having lowering mechanism (18) for inserting optical fiber (60) at a predetermined and controlled speed to a predetermined depth in oil-acid bath having oil layer (62), acid layer (64), and boundary (68) between oil layer (62) and acid layer (64).  The next step is to etch optical fiber (60) at boundary (68) by forming meniscus (66) around optical fiber (60) to selectively and controllably form on optical fiber (60) a microlens (78) having a predetermined shape, preferably a hyperbolic shape.  The etching includes the steps of first tapering optical fiber (60) to a shape determined by the distance that optical fiber (60) is first inserted into acid layer (64).  The etch step further chemically mills microlens (78) on optical fiber (60) to the predetermined shape by controlling the etch time and position of optical fiber (60) relative to boundary (68) for etching optical fiber (60) at boundary (68).
Patent CA-2149260-A1 (CA)
Title: Light-weight antibacterial ceramic and antibacterial ceramic filter
Inventor: SHIRAKAWA HIROSHI
IPC: C04B38/06
Filed: 1995-05-12
Abstract: An antibacterial ceramic contains an antibacterial material produced by loading an antibacterial metal such as silver on a calcium ceramic carrier and an inorganic material such as cordierite, and has a bulk density of 0.6 -1.2 g/cm3. An antibacterial ceramic filter contains an antibacterial material produced by loading an antibacterial metal such as silver on a calcium ceramic carrier, an aggregate such as mullite, and a binder such as frit, and has a porosity of 20% or more. The light-weight antibacterial ceramic is suitably applicable to a roof garden or the like. The antibacterial ceramic filter can remove and extirpate various bacteria and suspensions.
Patent CA-2149348-A1 (CA)
Title: Simultaneous voice/data answering machine
Inventor: BREMER GORDON
IPC: H04M1/652
Filed: 1995-05-15
Abstract: The present invention relates to an apparatus and method for controlling voice and data answering machines.  The apparatus is comprised of a first port for coupling to a data terminal, a second port for coupling to an audio answering machine and a third port for coupling to a communications channel for receiving an audio message and a data message. A unit is present for providing a pair of message identification fields, one field associated with the received audio message for storage on the audio answering machine and the remaining field associated with the received data message for storage on the data terminal.  The method, that is in fact a method of sorting a message is comprised of the steps of receiving a first message that represents information conveyed in a first media, receiving a second message that represents information conveyed in a second media and creating a pair of fields. Each field includes a message identification number, where one field is associated with the first message and the remaining field is associated with the second message. Finally the method includes storing each field and the respective message on separate storage devices.
Patent CA-2149391-A1 (CA)
Inventor: NICOLAY ALBERT
IPC: B27N5/00
Filed: 1995-05-15
Abstract: Described is a method of manufacturing moulded parts, preferably having the same wall thickness, from mixtures of cellulose and/or lignocellulose fibres with more than 20% by weight of thermal binders, in which the moulded article results from application of heat and pressure to fibre mat prefabricated therefrom. In a first step  the fibre mat undergoes preliminary compression as a planar, endless matted fibre fleece, with only a small degree of compression of the fibre composite, the matted fibre fleece containing at least 2% by weight of a binder which cross-links under heat, its "start-off temperature", i.e. the temperature at which cross-linkage begins, being lower than the softening temperature of the thermoplastic binder. The cellulose and/or lignocellulose fibres are provided, before production of the fibre composite, with a surface finish of the cross-linking binder. The fibre mat, slightly compressed in the first step, is in a second step heated in the form of a blank or of a web to at least the start-off temperature of the fibre finish. Compression is carried out before shaping of the moulded article, which is held in this condition of density for the duration of the cross-linkage of the fibre finish.     Finally the finally-compressed, preferably planar fibre mat, heated to the softening temperature of the thermoplastic binder, is shaped by the application of pressure to form the finished moulded article, in a press tool whose temperature lies below that of the heated fibre mat.
Patent CA-2149835-A1 (CA)
Inventor: SHEU LIEN-LUNG
IPC: B01D53/04
Filed: 1995-05-19
Abstract: A gas mixture comprised of nitric oxide and, optionally an inert gas, and containing small amounts of nitrogen dioxide, and perhaps moisture and sulfur dioxide, is purified by passing the gas stream through a bed of metal cation-free alumina-deficient zeolites of types Y or ZSM-5. The concentrations of nitrogen dioxide, sulfur dioxide and moisture in the gas stream are reduced to about 1 ppm or less as the gas mixture passes through the bed of zeolite.
Patent CA-2151074-A1 (CA)
Title: Method for producing 1,2-benzisothiazol-3-ones
Inventor: KAGANO HIROKAZU
IPC: C07D275/06
Filed: 1995-06-06
Abstract: A method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-(alkylthio)benzaldehyde with a hydroxylamine to give a 2-(alkylthio)benzaldehyde oxime and carrying out a reaction of the 2-(alkylthio)benzaldehyde oxime with a halogenating agent; and a method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-halobenzonitrile with an alkanethiol in a heterogeneous solvent system in the presence of a base to give a 2-(alkylthio)benzonitrile and carrying out a reaction of the 2-(alkylthio)benzonitrile with an halogenating agent in the presence of water.
Patent CA-2153062-A1 (CA)
Title: Sound image manipulation apparatus and method for sound image enhancement
Inventor: DESPER STEPHEN M
IPC: H04S/
Filed: 1993-12-30
Abstract: The manipulation system and apparatus receive electronic signals which are to be processed as enhanced stereophonic audio signals from two laterally spaced loudspeakers in front of the listener, either directly before recording or broadcasting, or after recording, or after being broadcast. The system and apparatus process those signals to produce a conditioning signal, such as which would be produced by virtual room boundaries, which is heard together with the original signals so that an enlarged listening area is perceived by the listener.  By amplitude and phase control of the signal to the two loudspeakers, the system and apparatus provide a means for control over the enhanced sound field. This enhanced sound field is perceived by the listener as being contained within boundaries larger than those normally reproduced by stereophonic speakers.  The system and apparatus generate a conditioning signal for the enhancement of natural, and generation of artificial, spatial qualities present in stereo signals usually masked in the acoustic environment in which reproduction takes place, through generation of phantom boundaries.  The apparatus can monitor its own output and shut down or reduce the effects if the output contains qualities that cannot be broadcast.  The apparatus provides self-adjustment in the electronic system to maintain spatial masking reversal at a constant value regardless of program material.
Patent CA-2156224-A1 (CA)
Inventor: CHIN WILSON CHUNG-LING
IPC: E21B47/18
Filed: 1995-08-16
Abstract: An acoustic detector in a mud pulse telemetry system includes a bypass loop in parallel with a section of the main mud line that supplies drilling mud to a drill string. The detector includes a pair of pressure sensing pons in the bypass line, and one or more pressure transducers for detecting the pressure at different locations in the bypass loop so that the differential pressure can be measured. The bypass loop has a small internal passageway relative to the main mud supply line and may include a constriction so as to create two regions in the passageway that differ in cross sectional areas. Forming the pressure sensing ports in the regions of differing cross sectional areas allows the pressure transducers to more precisely detect the mud pulse signals. Because of its relatively small cross sectional area, only a small fraction of the drilling mud flows through the bypass loop. The bypass loop may thus be constructed of hydraulic hose and a relatively small rigid body having a central through bore.
Patent CA-2158773-A1 (CA)
Title: Method and circuit for regulating the power of and linearizing a transmission signal of a radio device
Inventor: HULKKO JAAKKO
IPC: H04B7/005
Filed: 1995-09-21
Abstract: The invention is based on utilizing the receiver of a radio device to detect measured quantities related to a transmission signal. In the power regulating method according to the present invention, which is based on a power regulating loop, transmission power is detected in the receiver of the radio device. Part of the transmission signal (fTX) is input to the carrier frequency part of the signal path of the receiver by means of a power divider (201) and detected. A signal that is proportional to the power level is produced by means of an RSSI detector of the receiver, for example. The same circuit can also be utilized in the linearization of a transmission signal based on a closed loop by means of predistortion. Both the power regulation method and the linearization method can be applied in radio telephone systems based on both time-division and continuous transmission and reception.
Patent CA-2159631-A1 (CA)
Title: Acyclic nucleoside analogs and oligonucleotide sequences containing them
Inventor: COOK PHILIP D
IPC: A61K31/52
Filed: 1994-03-21
Abstract: Compounds of formula (I) wherein R1 is hydrogen, or a blocking group that is compatible with oligonucleotide synthesis; R2 is hydrogen or methyl; R3 is hydrogen or -P(R4)OR5; R4 is chlorine, 4-nitroimidazole, imidazole, tetrazole, triazole or di(lower-alkyl)amino-; R5 is methyl, 2-cyanoethyl or 2,2,2-trichloroethyl; n is from 0 to 2; X is oxygen, sulfur, or -NR6-; R6 is hydrogen or lower alkyl; Q is chosen from the group consisting of (a) and (b); R7 is lower-alkyl; and R8 is hydrogen, benzoyl, anisoyl, or lower-alkyl carbonyl and its pharmaceutically acceptable addition salts are nucleotide analogs. Modified oligonucleotides containing the nucleoside analogs of formula (I) are stable to nuclease degradation and are useful in inhibiting gene expression, in sequencing, and in mutagenesis.
Patent CA-2160539-A1 (CA)
Title: Alkyl substituted aromatic polyester gas separation membranes
Inventor: SIMMONS JOHN WARREN
IPC: B01D71/48
Filed: 1994-04-07
Abstract: Novel alkyl-substituted aromatic polyester gas sep-aration membranes and the process of using such mem-branes to separate one or more gases from a gaseous mix-ture is disclosed. The polyesters are formed from aro-matic alcohols of formula (I) where Z is independently alkyl groups having 1 to 10 carbon atoms, most preferably a tertiary butyl group, n is an integer from 0 to 4, prefer-ably 1.
Patent CA-2160793-A1 (CA)
Title: A screw
Inventor: WESTLUND TONNY
IPC: F16B25/10
Filed: 1994-05-03
Abstract: The present invention relates to a screw, consisting of austenitic stainless steel with a hardness which does not exceed 250 HV, which stainless austenitic steel exhibits a surface hardened layer (3), produced by ion nitriding, which has a thickness of 0.01-0.2 mm and a hardness of at least 900 HV.
Patent CA-2162124-A1 (CA)
Title: Golf putter
Inventor: STRAND LENNART
IPC: A63B53/04
Filed: 1994-05-03
Abstract: The invention relates to a golf putter having a head with a planar striking face.  The putter head has aiming assisting means which comprise at least two portions each extending rearwardly with respect to the striking face of the putter head such that when seen from above and in a rearward direction, said two portions diverge outwardly.  In order to assist increased accuracy when aiming, the two portions are arranged at such an angle to the striking face that the virtual extension of each portion in a direction forward of the striking face is substantially tangential to a standard golf ball placed at the striking face.