baber/WOPTO huggingface dataset:
Patent CA-2152530-A1 (CA)
Title: Aqueous Primer Composition
Inventor: MAEKAWA MASAO
IPC: C08L33/26
Filed: 1995-06-23
Abstract: An aqueous primer composition comprising a copolymer wherein a cationic monomer, a specific alkoxysilane monomer, a silane macromonomer and an ethylenically unsaturated monomer are contained in aqueous medium.  For this reason, regardless of the alkalinity of the substrate, the aqueous primer composition can form a highly water-resistant, alkali-resistant, tough film.   Furthermore, compared with the prior art, a higher concentration and a lower viscosity, so that the resulting primer composition shows excellent penetration into the substrate at high concentration and provides for sufficient substrate-reinforcing and water-proofing effects.          Moreover, when forming a film thereby and forming a finish layer thereon, this composition shows a high affinity for the top coating or adhesive to insure a firm integration of the finish layer with the substrate surface.
Patent CA-2153718-A1 (CA)
Title: Ink Jettable Toner Compositions and Processes for Making and Using
Inventor: KEOSHKERIAN BARKEV
IPC: C08F287/00
Filed: 1995-07-12
Abstract: A process for the preparation of toner compositions comprising: forming a mixture comprised of at least one free radical reactive monomer, a colorant, a stabilizer compound containing a stable free radical reactive group, and a liquid vehicle; and heating the mixture from about 75 to about 200°C to effect polymerization of said monomer, wherein there results stabilized core resin particles containing said colorant and wherein said stabilized core particles are stabilized by said stable free radical reactive stabilizer compounds being bonded directly to the core particles.
Patent CA-2154680-A1 (CA)
Title: In vivo free-radical generator
Inventor: HISAO NOJIRI
IPC: A61K47/48
Filed: 1994-11-24
Abstract: An in vivo free-radical generator comprising silver ions supported on a specified carrier. It generates free radicals .OH in the presence of water.  When supported on an ion-exchanger, the silver ions release gradually .OH  radicals in the presence of water. The released .OH radicals act on cancer cells to thereby suppress the cell growth and disrupt the cells, thus making cancer therapy possible. When zeolite or silica gel is used as the carrier in an amount below a specified value, the carrier is innocuous for the human body and can readily be excreted. Thus this generator is suitable as a medicine which is brought to the target tissue in the living body, such as a cancer cell, and generates free radicals thereat for long without adversely affecting the other tissues so much.
Patent CA-2155771-A1 (CA)
Title: Tolerance compensating reusable clamp structure
Inventor: OETIKER HANS
IPC: F16L33/025
Filed: 1995-08-10
Abstract: A clamp structure with a clamping band which can be used, for example, to fixedly secure a hose on a nipple and which includes a tightening arrangement for tightening the clamp structure about the object to be fastened and a tolerance-compensating arrangement for the entire tolerance range of the hose and nipple. The tolerance-compensating arrangement is thereby formed by a slot-like opening punched-out of the clamping band which is of such width and length that the lateral clamping band portions left on both sides of the slot-like opening provide tolerance compensation at the clamping forces specified by the customer, taking into consideration also the fact that the material of the lateral band portions is work-hardened by the punching-out operation of the tolerance-compensating opening.
Patent CA-2157235-A1 (CA)
Title: Process for preparing benzoic acid derivative intermediates and benzothiophene pharmaceutical agents
Inventor: KJELL DOUGLAS PATTON
IPC: C07C/
Filed: 1995-08-30
Abstract: The present invention provides a novel process for preparing a compound of formula I             wherein R is C1-C4 alkyl; R1 and R2 each are independently C1-C4 alkyl, or combine to form piperidinyl, pyrrolidinyl, methylpyrrolidino, dimethylpyrrolidino, morpholino, dimethylamino, diethylamino, or 1-hexamethyleneimino; and n is 2 or 3; or a pharmaceutically acceptable salt thereof, comprising a)   condensing (C1-C4 alkyl) 4-hydroxybenzoate with ethylene carbonate or propylene carbonate in the presence of a condensation catalyst and a moderately polar, water immiscible solvent having a high boiling point;   b)   reacting the product of step a), a compound of formula III          III wherein R and n are as defined above, with a leaving group donor; and c)   reacting the product of step b), a compound of formula IV             IV wherein R and n are as defined above and X is a leaving group, with a base selected from the group consisting of piperidine, pyrrolidine, methylpyrrolidine, dimethylpyrrolidine, morpholine, dimethylamine, diethylamine, and 1-hexamethyleneimine.           The product of the above process, a compound of formula I, also is novel and is useful for the preparation of pharmaceutically active compounds of formula II, particularly via the following novel process   wherein R is C1-C4 alkyl; R1 and R2 each are independently C1-C4 alkyl, or combine to form piperidinyl, pyrrolidinyl, methylpyrrolidino, dimethylpyrrolidino, morpholino, dimethylamino, diethylamino, or 1-hexamethyleneimino; and n is 2 or 3; or a pharmaceutically acceptable salt thereof, comprising a)   condensing (C1-C4 alkyl) 4-hydroxybenzoate with ethylene carbonate or propylene carbonate in the presence of a condensation catalyst and a moderately polar, water immiscible solvent having a high boiling point;   b)  reacting the product of step a), a compound of formula III             III wherein R and n are as defined above, with a leaving group donor;   c)   reacting the product of step b), a compound of formula IV             IV wherein R and n are as defined above; and X is a leaving group, with a base selected from the group consisting of piperidine, pyrrolidine, methylpyrrolidine, dimethylpyrrolidine, morpholine, dimethylamine, diethylamine, and 1-hexamethyleneimine;   d)   reacting the product of step c) with a compound of formula IV       wherein R3 and R4 are as defined above, or a pharmaceutically acceptable salt thereof;   e)   optionally removing the reaction product from step d); and f)  optionally forming a salt of the reaction product from either step d) or step e).
Patent CA-2158764-A1 (CA)
Title: Hydrogel Intervertebral Disc Nucleus with Diminished Lateral Bulging
Inventor: BAO QI-BIN
IPC: A61F2/44
Filed: 1994-01-28
Abstract: A prosthetic nucleus (10) for a vertebral disc is made of a hydrogel material. The hydrogel prosthetic nucleus has a shape generally conforming to the natural nucleus pulposus, and it exhibits diminished lateral bulging under high compressive loads. The hydrogel has a water content of from 30 % to 90 % and has a compressive strength of 4MNm-2 or greater. When the hydrogel material is dehydrated, it has a dimension of less than half of that of the hydrated hydrogel nucleus. The prosthetic nucleus may be formed of two or more pieces of hydrogel material (42, 44) which pieces, when combined, have a shape generally conforming to the natural nucleus. The prosthetic nucleus may have a stiff posterior periphery (24) and/or a thickened anterior wall (28).
Patent CA-2158957-A1 (CA)
Title: Scraper device
Inventor: FLODQUIST JAN
IPC: D21C7/08
Filed: 1994-04-05
Abstract: A scraper device is provided herein. Such scraper device is preferably a bottom scraper arranged at the bottom of a continuous digester for pulp production. The scraper comprises at least one scraper arm, preferably arranged with shovel members, a shaft and a drive device for driving the scraper arm. An axially-extending bore is provided inside the shaft for supplying liquid. A sealing arrangement is provided for sealing between the atmosphere and the medium in which the scraper arm is intended to rotate. The bore extends along only a limited part of the shaft at that end of the shaft on which the scraper arm is arranged.
Patent CA-2164031-A1 (CA)
Title: Transponder detection system for vehicles in toll collection lanes
Inventor: O'CONNOR ROGER J
IPC: G07B15/06
Filed: 1995-11-29
Abstract: A transponder detection system (50) for detecting the presence at a detection zone such as a vehicle toll collection lane (22) of a vehicle (100) on which a transponder (3) is mounted. Two antenna arrays (32, 34) are located on opposite sides of the detection zone (22), and have their boresights (B) directed to the detection area. For each array, a sum and difference signal of signals received from the transponder are measured. The sum channel signal is used to establish whether a transmission has occurred, and the difference channel signal is used to isolate any transponder that is at the detection zone.
Patent CA-2171837-A1 (CA)
Title: Electrically insulating film backing
Inventor: TUCKER PAMELA SUZANNE
IPC: C08L23/08
Filed: 1994-08-11
Abstract: A halogen-free, electrically insulating film comprising a resin component containing: a) from 0 to 40 parts of a rubber selected from EP or EPDM rubber; b) correspondingly, from 60 to 100 parts of an ethylene vinyl acetate polymer, c) from 40 parts to 150 parts ethylene diamine phosphate per 100 parts of said resin component; and d) from 0.5 to 5 parts of an amino-functional silane coupling agent per 100 parts resin component; wherein a nonoriented film self-extinguishes in less than 5 seconds, has an elongation at break of at least 200 %, a dielectric strength of at least 1200 V/Mil, and said film has a stress-strain relationship such that a curve showing a first derivative of stress versus strain is positive over the entire curve, and a curve showing a second derivative of stress versus strain is negative over more than 50 % of said curve.
Patent CA-2174297-A1 (CA)
Inventor: LICHTENBERG NORMAN B
IPC: F16C1/18
Filed: 1996-04-16
Abstract: A  rotary control device which includes an output pulley housing and an output pulley rotatably mounted therein.  A cable is at least partially wrapped around the output pulley and passed through a cable housing that is slidably mounted on the output pulley housing.  The output pulley rotates in response to the movement of the cable.  A spring mechanism is positioned between the output pulley housing and the cable housing to bias the pulley housing away from the cable housing to take up any slack in and tension in the cable. Furthermore, the output pulley or the input pulley or both can include a cam lobe or lobes formed on its periphery where the cable wraps therearound to control the torque output of the assembly.
Patent CA-2175921-A1 (CA)
Title: Reduction of optical noise
Inventor: BLAKE JAMES N
IPC: G01C19/72
Filed: 1994-11-23
Abstract: A noise reducer for reducing the results in the system output signal of optical noise introduced into an optical subsystem therein, having a phase modulator, by a source through obtaining a noise representation signal used to offset the noise components in the signal obtained from the output of the optical subsystem.  This noise representation signal is not delayed in the obtaining thereof by any more than half the delays of the waves emitted from the source in reaching the optical subsystem output.
Patent CA-2178079-A1 (CA)
Inventor: SAJBEL JEROME S
IPC: D21C9/16
Filed: 1994-08-17
Abstract: Process for repulping wet strength paper containing at least one wet strength resin in which the initial breakdown of the paper is conducted at a first pH and the substantial completion of the conversion to fibers is conducted at a second pH which is higher than the first pH.
Patent CA-2181814-A1 (CA)
Title: Isokinetic Exercise Hoop
Inventor: PLENDL MATTHEW E
IPC: A63B21/02
Filed: 1995-02-17
Abstract: A personal exercise and strength building hoop (10) is disclosed. The hoop (10) has two handles (20) attached at diametrically opposing positions, and are used for grasping the device.  The hoop (10) includes a central core (30) made of a flexible, resilient rod material, and further includes a compliant foam outer covering (40) suitable for grasping.  The covering (40) is preferably circular in cross section, while the core (30) is preferably rectangular in cross section.  The hoop (10) has a spring constant in diametric compression of approximately 0.4 pounds to 1.6 pounds per inch, and a spring constant in diametric expansion of approximately 1.3 pounds to 3.7 pounds per inch.  A person's muscle groups may be exercised over a range of motion of approximately 24 inches in compression and 10 inches in expansion.  An auxiliary tensioning means (110) may be removably attached between the handles (20), or at points between the handles (20), for increasing the expansion and compression spring constants, respectively.
Patent CA-2184880-A1 (CA)
Inventor: YIU ARNOLD T H
IPC: E05B77/28
Filed: 1996-09-05
Abstract: A deck lid latch including a pawl and a release lever rotatable upon a common shaft which preferably together provide a pocket within which an intermediate disabling lever pivots to place the latch in a first enabled position or a second disabled position whereat the pawl and release lever are disjointed from cooperative movement. A finger provided with the intermediate disabling lever may be fully recessed within the housing at all latched positions of operation, yet accessible to the user when the deck lid is raised.
Patent CA-2185899-A1 (CA)
Title: Junction box for low profile raised panel flooring
Inventor: SCHILHAM JAN J
IPC: H02G3/18
Filed: 1995-03-23
Abstract: A junction box (10) that organizes and provides access to electrical, data, telecommunications or other service lines (71) routed through numerous channels formed between a false floor (40) and an existing floor (F) is disclosed.  The housing (10) of the junction box (10) can be placed at virtually any point upon a false floor (40) so that equipment disposed about the false floor (40) can across outlets (72) provided within the housing (10) and connected to electrical, data, telecommunications cables or other service lines (71).  Additionally, a hatch (80) with a cable protector (88) may be provided to cover the junction box (10) for connection to the appropriate outlet (70).  In another embodiment, a flange (24) surrounds the top edge of the junction box housing (10) and has holes (26) through which pedestals or posts (50) that support a false floor (40) may insert.
Patent CA-2186013-A1 (CA)
Title: Writing instrument
Inventor: ANDREWS NEVILLE EDGAR
IPC: B43K21/16
Filed: 1995-04-06
Abstract: A modular lead advancing mechanism (3) is constructed as a unitary element to be received in a mechanical lead pencil structure. The pencil structure has a removable tip (4) at the forward end thereof and a modular lead feeding mechanism (3) for handling a lead of a desired size is introduced into the barrel (2) of the pencil structure through an opening produced when the tip is removed. A plurality of modular mechanisms (3) may be provided to enable the user to adapt the pencil to a desired lead size.
Patent CA-2188521-A1 (CA)
Inventor: THORP BENJAMIN A
IPC: D21F5/18
Filed: 1996-10-22
Abstract: A paper drying apparatus including a first rotatable drum, wherein the first rotatable drum has an inner perimeter and an outer perimeter and a second rotatable drum having an inner perimeter and an outer perimeter. A fabric sheet for carrying a paper web is provided, wherein the fabric sheet passes around the outer perimeter of the first rotatable drum and proceeds to next pass around the outer perimeter of the second rotatable drum. As the fabric sheet conveys the paper web around the first rotatable drum, a drying air is applied to the paper web in a direction from the inner perimeter of the first rotatable drum toward the outer perimeter of the first rotatable drum, further passing through the paper web. As the fabric sheet and paper web proceed around the second rotatable drum, a drying air is applied to the paper web in a direction from the outer perimeter of the second rotatable drum toward the inner perimeter of the second rotatable drum, further passing through the paper web in a similar direction.
Patent CA-2189728-A1 (CA)
Inventor: BROWN E BELLE
IPC: A61F5/445
Filed: 1996-11-06
Abstract: An ostomy bag cover is formed of a single piece of a soft knit fabric, folded and sewn so that there are no rough edges in contact with the patient. The covercontains the ostomy bag and isolates the patient from direct contact of the plastic bag with the skin. The cover has a distal side panel and left and right proximal side panels that meet at a vertical midline on the patient side of the cover. The panels are left detached from one another from the top seam partway down the midline todefine a vertical slot through which the fitting or flange of the ostomy bag protrudes. Another slot is provided along the bottom seam to accommodate a draintube.
Patent CA-2191049-A1 (CA)
Title: Central vacuum with acoustical damping
Inventor: RITTMUELLER STEPHEN P
IPC: F01N13/00
Filed: 1996-11-22
Abstract: A central vacuum unit having an acoustic damping system is provided.  The central vacuum unit includes a canister having a sidewall forming a hollow interior and a lid closing an end of the sidewall, a vacuum motor within the canister which emits noise during operation, at least one cooling air inlet for admitting cooling air into the hollow interior, and at least one cooling air outlet in the sidewall for exhausting the cooling air from-the hollow interior.  Additionally, the sidewall has an exhaust port and the motor has an exhaust pipe extending through the exhaust port.  The acoustic damping system includes an acoustic damping tunnel, an acoustic damping canopy, and an exhaust port seal.  The acoustic damping tunnel is within the hollow interior and forms a pathway between the hollow interior and the cooling air outlet.  The pathway is lined with a sound absorbing material so that the tunnel reduces noise emitted from the hollow interior through the cooling outlet.  The acoustic damping canopy is attached to the canopy over the cooling air inlet.  The canopy has an inlet and forms a serpentine pathway between the canister cooling air inlet and said canopy inlet to reduce noise emitted from the hollow interior through the canister cooling air inlet.  The exhaust port seal covers the exhaust port to reduce noise emitted from the hollow interior through the exhaust port.  The exhaust port seal preferably includes flexible foam bonded to the canister sidewall.
Patent CA-2193485-A1 (CA)
Inventor: FENSTER AARON
IPC: G06T15/20
Filed: 1995-06-23
Abstract: A three-dimensional ultrasound imaging system includes an ultrasound probe to direct ultrasound waves and to receive reflected ultrasound waves from a target volume of a subject under examination. The ultrasound probe is swept over the target volume and the reflected ultrasound waves are conveyed to a computer wherein successive two-dimensional images of the target volume are reconstructed fo form a three-dimensional image of the target volume. The three-dimensional image is displayed on the monitor of the computer. A user interface allows a user to manipulate the displayed image. Specifically, the entire displayed image may be rotated about an arbitrary axis, a surface of the displayed image may be translated to provide different cross-sectional views of the image and a selected surface of the displayed image may be rotated about an arbitrary axis. All of these manipulations can be achieved via a single graphical input device such as a mouse connected to the computer.
Patent CA-2200425-A1 (CA)
Title: Underoxidized burner utilizing improved injectors
Inventor: GREINER LEONARD
IPC: F02B3/06
Filed: 1995-06-02
Abstract: Injectors are disclosed for use in an underoxidized burner having a single or double stage internal combustion chamber (10) for receiving gaseous or liquid fuel such as diesel for mixture with air or oxygen and subsequent ignition by a spark plug. The injector includes feed conduits or tubes (46, 47) for simultaneously conducting air and fuel to a mixing device having a baffle (45) arrangement against which separately injected air and fuel impinge causing a complete air/fuel blending which is ignited, burned and exhausted. The injector may accept effluent gases for mixing with water to produce maximum hydrogen H2 from fuels. A laminar flow is produced which is folded over and reversed in direction within the combustion chamber.
Patent CA-2204128-A1 (CA)
Title: Silicone-containing polymer suitable for ophthalmic application
Inventor: ALLEN CHERYL RETTER
IPC: G02C7/04
Filed: 1995-11-22
Abstract: Copolymers formed from dimethacrylates of polyalkylene glycols and vinylic reactive silicones having up to 20 silicon atoms in the substantial absence of additional cross-linking agents are disclosed. The copolymers may include a hydrophilicity-modifying monomer. The preferred silicon is TRIS (i.e., 3methacryloxypropyl tris(trimethylsiloxy)silane), while the preferred polyalkylene glycol is polypropylene glycol dimethacrylate. The copolymers are especially suited to use in the fabrication of soft contact lenses because of the good durability and high oxygen permeability.
Patent CA-2211848-A1 (CA)
Title: Peritoneal dialysis apparatus
Inventor: DADSON JOSEPH E
IPC: A61M1/16
Filed: 1997-07-28
Abstract: An automated peritoneal dialysis machine is provided which is capable of selecting and changing the composition of dialysate delivered to a patient in the course of treatment to meet specific physiological needs. The apparatus includes means for metering solutions of osmotic agent, electrolytes and other desired dialysate components from separate solution containers into mixing chamber means for combination in desired proportions. The means for delivery of fresh dialysis fluid to a patient and for removing spent dialysis fluid from the patient includes means for monitoring intraperitoneal pressure and other conditions of the fluid in the peritoneum and electronic control means responsible to the signal of monitoring means for controlling rates of dialysate infusion and removal.
Patent CA-2214347-A1 (CA)
Title: Fuel oil additives and compositions
Inventor: GOBERDHAN DHANESH GORDON
IPC: C10L1/22
Filed: 1996-03-13
Abstract: The invention relates to a method of improving the cold flow characteristics of a fuel oil, the method comprising adding to the fuel oil as a wax crystal modifier an additive composition comprising: (i) an oil soluble hydrogenated block butadiene polymer, the polymer comprising at least one crystallizable block, obtained by end-to-end polymerization of a linear butadiene and at least one non-crystallizable block, the non-crystallizable block being obtained by 1,2-configuration polymerization of a linear butadiene, and (ii) a fuel oil cold flow improver other than the hydrogenated block butadiene polymer as defined in (i), and said cold flow improver is a fuel oil cold flow improver selected from: (A) ethylene-unsaturated ester compounds, (B) comb polymers, (C) polar nitrogen compounds, (D) compounds comprising a ring system having at least two substituents comprising a linear or branched aliphatic hydrocarbylene group optionally interrupted by one or more hetero atoms and carrying a secondary amino group, the substituents on the amino groups each being a hydrocarbyl group containing 9 to 40 carbons, (E) polyoxyalkylene compounds, and (F) hydrocarbon polymers. The invention also relates to methods of improving cold flow characteristics of fuel oils by use of the additives and fuel oil compositions and concentrates containing the additives.