baber/WOPTO huggingface dataset:
Patent CA-2199788-A1 (CA)
Inventor: HIAI HIROSHI
IPC: C25C1/12
Filed: 1997-03-12
Abstract: A method of purifying copper electrolytic solution being circulated in a copper electrorefining system wherein a portion of the solution is withdrawn and is recycled to the system after purification treatment in which hydrosulfide is added to the solution withdrawn to generate only the necessary quantity of hydrogen sulfide gas on the spot and the hydrogen sulfide gas generated is utilized for purification treatment. One process comprises dividing the solution withdrawn into two portions, adding sodium hydrosulfide to the first portion to precipitate and separate metals as sulfides from the first portion, further adding excess sodium hydrosulfide to the first portion for reaction with residual sulfuric acid in the solution to generate hydrogen sulfide gas, contacting the second divided portion with the hydrogen sulfide gas thus produced to precipitate and separate metals in the form of sulfides, and recycling the filtrate to an electrorefining system. There is also provided a process comprising contacting the solution with hydrogen sulfide gas to separate and remove Cu, As, Sb and Bi in the form of sulfides from the solution, dividing the solution into two portions, wherein the first portion is recycled to the electrorefining system, whereas excess sodium hydrosulfide is added to the second portion to separate and recover Ni as nickel sulfide from the solution, while resulting hydrogen sulfide gas is used for contact with solution to be treated.
Patent CA-2201128-A1 (CA)
Title: Stent delivery device
Inventor: JOHNSON WADE M
IPC: A61F2/966
Filed: 1995-08-24
Abstract: A stent delivery device (20) is disclosed that includes an inner tube (30) having a distal portion (32) which carries the stent (10) on the delivery device (20). At least part of the inner tube (30) is formed from a spirally wound wire. A movable outer tube (50) is used to constrain the stent (10) in a radially contracted state on the distal portion (32) of the inner tube (30). A  substantially straight elongate wire (34) is configured inside the spirally wound wire and bonded at the distal and proximal portions of the wound wire.  The outer tube (50) may have at least one side port (54) adjacent to the distal portion in communication with the annular space between the outer tube (50) and the inner tube (30) allowing radiopaque fluid to be injected through the annular space and out the side port (54) in the vicinity of the stent (10).
Patent CA-2202231-A1 (CA)
Title: Process for the production of a pearl shine pigment preparation
Inventor: SOMMER GUNTER
IPC: C09D11/037
Filed: 1997-04-09
Abstract: A pearl  shine  pigment  preparation  as  a pre-product  for  a printing ink in which pearl shine pigment is made into a paste with a binding agent and optionally with a solvent and/or additives and the paste is put into a compact particle form.   For that purpose the paste  is  compressed  to  form  compact  particles  by  tabletting, briquetting,  pelleting or extruding.   In that compacted form the pearl shine pigment preparation can be used for the production of printing inks, in particular intaglio printing inks.
Patent CA-2202729-A1 (CA)
Title: Sintered metal seal
Inventor: RAY THOMAS WAYNE
IPC: E21B33/06
Filed: 1997-04-15
Abstract: A sintered metal seal comprising a sintered metal portion and an elastomeric portion molded thereto or impregnated therein. The sintered metal portion is substantially porous, and at least a portion of the elastomeric portion extends into porous openings formed in the surface of the sintered metal portion. In one embodiment, elastomeric elements are impregnated in the sintered metal portions such that the elastomeric elements are disposed in at least some of cavities formed in the porous sintered metal portion. The sintered metal seal is particularly well adapted for use in oil and gas well equipment, and various embodiments are disclosed, including a piston unit for a through-flowline tool string, a packer element assembly for a compression packer, a molded seal for a molded seal unit for sealing between a tubing string and a production well packer, a service seal for a service seal unit for sealing between a tubing string and a gravel packer in a well, and a seal block for a wireline valve.
Patent CA-2202815-A1 (CA)
Title: Introducers and assemblies
Inventor: FIELD STEPHEN JAMES
IPC: A61M25/08
Filed: 1997-04-16
Abstract: Conventional introducers, such as for introducing endotracheal tubes, are made from a braided sleeve repeatedly coated with layers of resin. This is a labour-intensive and expensive process. In the present invention the introducer comprises a solid rod 2 made of an aliphatic polyurethane containing about 20% barium sulphate. The hardness of the material is about 60 Shore D so that the introducer is resilient within a range of deformation and beyond this range it is bendable into a set shape that only resumes its original shape at a slower rate
Patent CA-2205681-A1 (CA)
Title: Thermal spray gun with inner passage liner and component for such gun
Inventor: RUSCH WILLIAM P
IPC: B05B7/20
Filed: 1997-05-16
Abstract: A gas cap for a thermal spray gun has a spray passage extending from the combustion chamber to an exit end, and a thermal spray material is fed into the passage.  A nozzle component of the gas cap is formed of a tubular inner member in thermal contact with a metallic outer member, such as copper, that is in contact with a fluid coolant.  The inner member is formed of a hard, thermally conductive material, preferably a carbide in a metal matrix, such as tungsten carbide in cobalt.
Patent CA-2209585-A1 (CA)
Title: A food composition in the form of a mousse-like plastic mass
Inventor: CAVALLI MORENO
IPC: A21D13/00
Filed: 1997-07-02
Abstract: An aerated food composition is constituted by an oil-in-water emulsion comprising fats, milk proteins, possibly sugars, and water, having an acid pH of from 3.5 to 6, characterized in that it has: - a food fat content of from 20 to 45% by weight, and - a water content of from 20 to 38% by weight, it is substantially free of thickeners and fusion salts and it is obtainable by the steps of: a) preheating a food component selected from fresh cheese, yoghurt, sour cream and mixtures thereof, with stirring, at a temperature of from 40 to 60°C; b) dissolving, in the mixture prepared in a), milk whey proteins in powder form in quantities of from 1 to 10% by weight with reference to the final weight of the emulsion, and possibly sweeteners in powder form, with stirring; c) preparing a fat phase comprising butter fat and/or vegetable fats, at a temperature of between 50 and 70°C, in the presence of a lipophilic surfactant; d) mixing the fat phase with the phase produced in b), with stirring, to produce an oil-in-water emulsion having a viscosity of from 500 to 4000 cps at 65°C; e) pasteurizing the emulsion thus obtained at a temperature of between 80 and 110°C for a period of from 20 to 40 seconds; f) precooling the mixture to a temperature of from 30 to 60°C; and g) aerating the mixture by the injection of an inert gas.
Patent CA-2211385-A1 (CA)
Title: N-1-carboxyalkyl derivatives of lsd
Inventor: SIGLER GERALD F
IPC: C07D457/06
Filed: 1996-11-20
Abstract: Novel derivatives of LSD having formula (I) wherein R1 is an alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms, preferably an alkyl group having 1 carbon atom; R2 is a bond or (a) wherein R3 is an alkyl, cycloalkyl or aryl group having 2 to 10 carbon atoms, preferably an alkyl group having 2 or 5 carbon atoms; Z is an immunogenic carrier substance, an enzyme donor polypeptide or a label selected from the group consisting of an enzyme, a substance having fluorescent or luminescent properties and a radioactive substance; and n is 1 to p where p equals MW of Z/1000. The derivatives include maleimide conjugates of an immunogenic poly(amino acid), an enzyme donorpolypeptide or a labeling substance such as an enzyme, a fluorescent substance or a radioactive substance.  Novel activated hapten intermediates useful in the preparation of the conjugates and method for synthesis of the hapten intermediates and their conjugate derivatives are also disclosed.
Patent CA-2211753-A1 (CA)
Inventor: PARZYGNAT WILLIAM JOSEPH
IPC: G02B6/36
Filed: 1997-07-30
Abstract: Disclosed is a laminated optical device assembly having a template which both restrains an optical device and provides a safe bending radius about which to mount fiber optic cables emanating from the device.  The assembly is adapted for field assembly to assist a craftsperson with the placement and protection of fragile fiber optic cables. The template is adhesivey bonded between a bottom and a top to provide a robust assembly which is further incorporated into an optical device housing.
Patent CA-2215389-A1 (CA)
Inventor: CHAO NELSON J
IPC: C07K14/00
Filed: 1996-04-15
Abstract: L'invention porte sur des compositions pharmaceutiques comportant comme principe actif un copolymère aléatoire de synthèse, du type GLAT, d'un poids moléculaire moyen d'environ 4 000 à 12 000 et de préférence de 6 000 à 8 000, consistant en groupes d'acide glutamique (Glu), de lysine (Lys), d'alanine (Ala) et de tyrosine (Tyr) dans un rapport molaire relatif de 1,4 à 2,1 parties de Glu, de 3,2 à 5,00 parties de Lys, de 4,0 à 6,6 parties d'Ala et de 1,0 parties de Tyr. Ladite composition peut servir à la prévention et au traitement de troubles dus à la réaction greffe contre hôte chez des patients subissant des transplantations de moelle ou d'organes.
Patent CA-2216423-A1 (CA)
Title: Ternary radiopharmaceutical complexes
Inventor: EDWARDS DAVID SCOTT
IPC: A61K51/08
Filed: 1996-04-03
Abstract: This invention provides novel radiopharmaceuticals which are useful as imaging agents for the diagnosis of cardiovascular disorders, infectious diseases and cancer. The radiopharmaceuticals are comprised of phosphine or arsine ligated technetium-99m labeled hydrazino or diazino modified biologically active molecules that selectively localize at sites of disease and thus allow an image to be obtained of the loci using gamma scintigraphy. This invention also provides methods for using the radiopharmaceuticals and kits comprising radiopharmaceutical precursors. The radiopharmaceuticals of this invention have the structure: [(Q)d'L n-C h']x-M t(A L1)y(A L2)z; wherein the variables are as defined herein.
Patent CA-2216965-A1 (CA)
Title: A telecommunication system and a method for transferring microcells therein
Inventor: PETERSEN LARS-GOERAN
IPC: H04L12/70
Filed: 1996-04-23
Abstract: A telecommunication sys-tem comprises a sending entity (102), a receiving entity (104) and an ATM link (106) between the sending and receiving enti-ties for transferring ATM cells (108) on specific separate ATM  connections. The ATM cells include user ATM cells having a header and payload contain-ing data in the form of a de-termined number of data units which carry data in microcells (110). The header includes an ATM connection pointer. The microcells have payload for carrying a variable size user data package and a microcell header containing code identifying a microcell connection. A  microcell being unable to fit in its entirety in a remaining space of an ATM cell belonging to a certain ATM connection is divided into a first part located in at least one following ATM cell belonging to the same ATM connection. Microcell size information is associated with each microcell. Methods for finding microcell boundaries are provided.
Patent CA-2217263-A1 (CA)
Title: Optical repeater and optical transmission system
Inventor: WATANABE TAKASHI
IPC: H04B10/43
Filed: 1997-10-03
Abstract: To effectively collecting information necessary for maintenance of the optical transmission system from each optical repeater equipment, in an optical transmission system of the wavelength division multiplexing type according to this invention, a repeater unit 210-1 in optical repeater equipment 200 detects the wavelengths of optical signals .lambda.1 to .lambda.q', the directions of optical signals, the transmission line ID Nos., and so on by using an optical couplers 211, 219, demultiplexers 212, 213, O/E converters 214-1~p, 215-1~q, and local oscillators 216-1~p, 217-1~q, and a supervisory control signal, including information about the detection results and a light amplifier 218, is sent to optical terminal equipment 100.
Patent CA-2219490-A1 (CA)
Title: Magnetofluid-assisted electromagnetic drive for a blood pump used to support the heart or for partial or complete replacement of the heart
Inventor: MUELLER JOHANNES
IPC: A61M60/196
Filed: 1997-02-27
Abstract: The invention relates to an magnetic fluid-assisted electromagnetic drive for a blood pump used to support the heart or for partial or complete replacement of the heart. The blood pump is of a weight and energy density corresponding closely to those of the natural heart and especially suitable for implantation, the aim being to reduce the size of the total system in relation to known systems while improving its efficiency. This is achieved as follows: a blood pump is provided with a magnetic fluid-assisted electromagnetic drive comprising one or more electromagnets and force-converting devices, the intermediate chamber of at least one electromagnetic circuit is completely or partially filled with magnetic fluid and the poles have permanent magnetic properties. A magnetic fluid with a saturation magnetisation of between 150 and 450 mT and initial permeability of between 5 and 25 is used.
Patent CA-2219941-A1 (CA)
Title: Method and system for injection molding utilizing a variable volume spill cavity and article produced thereby
Inventor: HENDRY JAMES WATSON
IPC: B29C45/17
Filed: 1996-05-03
Abstract: A method and system for injection molding plastic articles which utilize a spill cavity (325) whose volume varies. In one embodiment, the volume varies during introduction of pressurized gas into a mold cavity flow coupled to the spill cavity. In another embodiment, the volume of the spill cavity varies during a plastic injection which fills the mold cavity. A piston (329) reciprocally mounted within a cylinder (327) defines the variable volume of the spill cavity. In one embodiment, a pneumatic control circuit (166) controls the pressure on a lower surface of the piston to thereby control the position of the piston within the cylinder and therefore the volume of the spill cavity. In another embodiment, an air spring (188) is utilized to control pressure on the piston which counters the pressure of the plastic on the piston. In one embodiment, a stop pin (144) connected to the piston prevents the piston from leaving the cylinder when the mold is opened and solidified plastic in the spill cavity is to be ejected therefrom. An ejector pin (186"") ejects plastic after it is pulled out of the spill cavity. Various ways of introducing a controlled amount of gas pressure at the lower surface of the piston are provided including through the stop pin.
Patent CA-2220242-A1 (CA)
Title: System for monitoring water consuming structures and their heat use in an individual unit of a multi-unit building and a system for billing therefor
Inventor: SAAR DAVID A
IPC: G01F15/00
Filed: 1997-11-05
Abstract: A system is disclosed for monitoring the use of water in an individual unit of a multi-unit building wherein the multi-unit building is supplied water from a common source and the individual unit has a plurality of water consuming structures each supplied by one or a pair of water pipes supplied from the common source. A monitor determines the volumetric flow through each of the pipes, each of said monitors and periodically transmits a signal encoded with the volumetric flow of the pipe and the identification of the individual unit in which the pipe is located. A remote receiver receives the encoded signals from each of the monitors and computes a total volumetric flow of water for the individual unit for a selected period of time. Additionally, continuous volumetric flow through the pipe proximate the water consuming structure during a predetermined period of time can be predetermined time so that an alarm signal can be transmitted in the event that it is determined that flow to the water consuming structure has been continuous for the predetermined time. The use of heat energy in the water devices can be monitored to define the heat energy use. A remote receiver receives the encoded signals from each of the monitors, defines a total volumetric flow of water and /or total heat energy use for the individual unit for a selected period of time, computes a water consumption/heat energy charge and prepares and forwards a bill to the individual unit.
Patent CA-2223059-A1 (CA)
Title: Turret winder mandrel support apparatus
Inventor: MCNEIL KEVIN BENSON
IPC: B65H19/12
Filed: 1996-05-22
Abstract: A web winding apparatus (90) and a method of operating the apparatus are disclosed. The apparatus can include a turret assembly (200), a core loading apparatus (1000), and a core stripping apparatus (2000). The turret assembly (200) supports rotatably driven mandrels (300) for engaging hollow cores (302) upon which a paper web (50) is wound. Each mandrel (300) is driven in a closed mandrel path (320), which can be non-circular. The core loading apparatus (1000) conveys cores (302) onto the mandrels (300) during movement of the mandrels (300) along the core loading segment (322) of the closed mandrel path (320), and the core stripping apparatus (2000) removes each web wound core (302, 51) from its respective mandrel (300) during movement of the mandrel (200) along the core stripping segment (326) of the closed mandrel path (320).  The turret assembly (200) can be rotated continuously, and the sheet count per wound log (51) can be changed as the turret assembly (200) is rotating. The apparatus (90) can also include a mandrel (300) having a deformable core engaging member (3100). A mandrel cupping assembly (400) releasably supports the second ends (312) of the mandrels (300) along a portion of the closed mandrel path (320). Along a portion of the closed mandrel path (320) intermediate the core stripping segment (326) and the web winding segment (324) the second ends (312) of the mandrels (300) are unsupported. At least one mandrel support (610, 710) supports the individual mandrel (300) intermediate the first end (310) and the second unsupported end (312) during movement of the mandrel (300) intermediate the core stripping segment (326) and the web winding segment (324) of the closed mandrel path (320). The mandrel support (610, 710) comprises a rotating mandrel support surface (620, 720), which has a variable radius, and which can be helical.
Patent CA-2223683-A1 (CA)
Inventor: SIMMONS JAMES A
IPC: B31D5/00
Filed: 1996-06-06
Abstract: A cushioning conversion system includes a cushioning conversion machine (10), which converts stock paper into a plurality of cut pads (14), and a conveyor system (8) positioned to receive pads (14) produced by the cushioning conversion machine (10) and including a conveyor (16) which conveys the pads (14) away from the machine (10) and at least one moveable gate having (34) an open position allowing a pad (14) to pass therethrough and a closed position for stopping progress of a pad (14) along the conveyor (16) when there is insufficient space on the conveyor (16) downstream of the gate (34) to permit a pad (14) to progress substantially through the gate (34).
Patent CA-2224816-A1 (CA)
Inventor: MICHOUD HENRI
IPC: B26D7/08
Filed: 1996-06-18
Abstract: An ultrasonic cutting device with an ultrasonic generator having a given natural frequency and being coupled to a cutting tool. The cutting tool is a revolving disc (5) and the ultrasonic generator (10, 11) is coupled to a central portion (4) of the disc (5) via a coupling means (30, 40), said central portion (4) being arranged on an amplitude antinode of the ultrasonic vibration generated by the ultrasonic generator (10, 11).
Patent CA-2226719-A1 (CA)
Inventor: SATO SHINOBU
IPC: G06T1/00
Filed: 1998-01-16
Abstract: The invention provides an image data illegal use prevention system which prevents illegal use of digital image data without deterioration of the picture quality.          The image data illegal use prevention system includes an image data fetching unit for fetching digital image data in which electronic watermark data may be embedded, and an electronic watermark data detection unit for detecting electronic watermark data from the image data fetched by the image data fetching unit.  If electronic watermark data are detected by the electronic watermark data detection unit, then an image data recording unit does not record the image data fetched by the image data fetching unit onto a recording medium, thereby preventing illegal duplication.  The electronic watermark data are calculated, for example, in accordance with an expression determined in advance for frequency components of discrete cosine transformed digital image data.
Patent CA-2227393-A1 (CA)
Title: Fireplace burner apparatus
Inventor: DWYER CLAUDIA MARIA
IPC: F23D14/60
Filed: 1998-01-20
Abstract: An improved fireplace assembly is described having a folded sheet metal burner manifold divided into three regions, being an upper burner, a lower burner and an intermediate communicating riser. This single manifold chamber is provided with two separate gas inlets, each of which may deliver a different primary air to fuel mix suitable for use with an array of burner ports and an associated set of simulated logs to create different sizes and shapes of flames, or flame patterns. The flame patterns generate hot exhaust gases which heat portions of the simulated logs to glow. The burner ports used in the assembly to generate suitably attractive flame displays may include large or non-circular apertures or slots having local reinforcement to resist deformation of those apertures.
Patent CA-2229360-A1 (CA)
Title: Optical receiver and demultiplexer for free-space wavelength division multiplexing communications systems
Inventor: RUTLEDGE CHRISTOPHER L
IPC: H04B10/118
Filed: 1998-02-12
Abstract: A free-space wavelength division multiplexing system is provided having a demultiplexer and receiver arrangement. The demultiplexer and receiver arrangement may be based on a rotatable interference filter. A desired wavelength can be selected by adjusting the angle of the interference filter with respect to the incoming light beam. Alternatively, the demultiplexer and receiver arrangement may be based on a diffraction grating. Multiple wavelengths of light are diffracted at different angles, which spatially separates each wavelength in the system. A corresponding multiple-element linearphotodetector array is used to receive the spatially separated optical signals.
Patent CA-2229412-A1 (CA)
Inventor: GIZOTI KATERINA
IPC: A61C15/02
Filed: 1996-03-01
Abstract: A toothpick that has an angle shape, due to the sinew (5) along the axis, with a hook on the one tip. It is a toothpick that has formation at both tips. One tip of the toothpick is pointed (2) hook and notched (6) which can be used as a "saw" for cutting in pieces food remainders. The other tip has the shape of a pointed (4), notched (6a) hook (3).