baber/WOPTO huggingface dataset:
Patent CA-2019280-C (CA)
Title: Tamper-evident closure for wide mouth container
Inventor: MACK ANTHONY C
IPC: B65D43/10
Filed: 1990-06-19
Granted: 1998-06-09
Abstract: A tamper-evident closure for a wide mouth container. The closure member has a central panel and a downwardly opening rim cavity encircling the central panel and adapted to receive therein a top rim of the food container.  The rim cavity is defined by a pair of upstanding, radially spaced skirt segments connected at their respective upper edges by a top rim segment.  A radially outer one of the skirt segments has adjacent a lower edge thereof a radially inwardly projecting and circumferentially extending first flange adapted to snugly fit under and frictionally engage the lip on the food container.  In addition, the radially outer skirt also has a radially outwardly projecting second flange contiguous with and oriented below the first flange.  A plurality of generally inverted V-shaped radially outwardly projecting rim segments are integrally connected between each set of mutually adjacent circumferential ends of at least the second flange.  The inverted V-shaped rim segments each have a pair of wall segments each projecting radially outwardly from a respective one of the mutually adjacent circumferential ends of at least the second flange.  The pair of walls extend inclined upwardly from the second flange toward each other to and integral connection forming an apex. Each of the plural apexes defines stress concentration structure for the material of the closure member so that a lifting force applied to one of the second flanges will cause the material of the closure member to break only at the apexes.
Patent CA-2022002-C (CA)
Inventor: ONO HIROSHI
IPC: G10K11/28
Filed: 1990-07-26
Granted: 1999-10-05
Abstract: An acoustic apparatus adapted to be heard only by a specific person or persons in one space without being worn by the user as in the case of an earphone. Sounds issuing from the apparatus do not leak to the outside and are not affected by the surrounding noise. Basically, the apparatus is arranged such that a sound source is disposed in one focus of a reflector having an ellipsoidal surface of revolution, and sounds are heard at the other focus. To increase the number of specific hearers, if the central portion of the reflector is made into a non-ellipsoidal surface of revolution, or a cross section having an ellipsoidal surface of revolution is extended orthogonally to the cross section by a predetermined length, the range of the other focus expands. In addition, by arranging a plurality of reflectors, it is possible to hear different sounds within the effective areas of the respective reflectors without mutual interference of the sounds.
Patent CA-2032195-C (CA)
Title: Computer system security device
Inventor: GOLDING VICTOR GERALD
IPC: G06F21/22
Filed: 1990-12-13
Granted: 1996-01-23
Abstract: A computer system having a power-on password stored in  non-volatile  memory wherein  entry  of  the  power-on password by a system manager permits access to all of the computer functions.  The system also has the facility of at  least one  additional password held  in non-volatile memory, wherein entry of the additional password by a user permits the system to boot in a manner preselected by the system  manager.    Preferably  there  are  available  a plurality of additional passwords providing at least two different levels of security access to the system.
Patent CA-2035208-C (CA)
Title: Slackless coupler connection for a railway vehicle
Inventor: ALTHERR RUSSELL GEORGE
IPC: B61G7/10
Filed: 1991-01-29
Granted: 1995-08-15
Abstract: In a railway coupler connection, an improved slackless connection in which an arcuate conical surface is provided about the butt end of a vertically restrained coupler member which is seated within the pocket of a self-adjusting follower member having a corresponding arcuate conical surface about a pocket therein.  The corresponding arcuate conical surfaces interface in mated alignment in order to permit horizontal angling of the coupler member while restraining the butt end of the coupler member in a lateral and longitudinal position within the center sill. As in-service wear occurs, the self-adjusting follower member will drop with respect to the coupler member to maintain this zero-slack arrangement.  The coupler member may be placed in the upper portion of the center sill permitting a lower center sill height while staying within the coupler height range specified by the American Association of Railroads.
Patent CA-2037841-C (CA)
Inventor: CAILLE GERARD
IPC: H01Q21/24
Filed: 1991-03-08
Granted: 1994-09-20
Abstract: Le système d'antenne imprimée active à haut rendement pour radar spatial agile comprend plusieurs milliers de circuits intégrés hyperfréquences de type MMIC identiques émettant tous et toujours la même puissance. La présente invention peut être adaptée notamment aux radars spatiaux.
Patent CA-2039875-C (CA)
Title: Process for forming the ridge structure of a self-aligned semiconductor laser
Inventor: WEBB DAVID J
IPC: H01S5/00
Filed: 1991-04-05
Granted: 1994-05-03
Abstract: A process for forming the ridge structure of a self-aligned semiconductor laser, particularly useful for long wavelength devices as required for signal transmission systems.   Described is the process as applied to an InP-system, double heterostructure (DH) laser. A thin Si3N4 layer (41) is inserted between the photoresist mask (42) that defines the ridge structure, and the contact layer (35). This results in improved adhesion and reduced etch undercutting whereby the ohmic contact area is increased, heat development decreased and device properties improved. Using a Si3N4 layer (41) deposited at a high plasma excitation frequency (RF) for adhesion promotion, and a low frequency deposited (LF) Si3N4 layer (43) for device embedding, provides for the etch selectivity required in the process stepthat is used to expose the contact layer to ohmic contact metallization deposition.
Patent CA-2040711-C (CA)
Title: Method for making flexible retroreflective sheet material
Inventor: MARTIN DAVID CHARLES
IPC: B32B3/30
Filed: 1991-04-17
Granted: 1996-01-02
Abstract: A flexible retroreflective sheet material is formed by adhering a first face of a first flexible synthetic resin sheet material to a synthetic resin second sheet material by a first adhesive which preferentially adheres to the second sheet material.   On the second face of said first sheet material are thereafter formed closely spaced retroreflective microprisms having a height of 0.001-0.010 inches.  A second adhesive is applied to the second face of said first sheet and firmly engages therewith.   A flexible backing material is adhered to the second adhesive over the second face.  Lastly, the second sheet material and first adhesive are stripped from the first sheet material to produce a firmly bonded flexible composite sheet material comprised of the adhesively bonded first  sheet  material  and  backing  material.    The retroreflective microprisms may be coated with a reflective metal  deposit  or  surrounded  by  air  to  provide  a retroreflective interface.
Patent CA-2043492-C (CA)
Title: Method and apparatus for purifying silicon
Inventor: YUGE NORIYOSHI
IPC: H01L31/04
Filed: 1991-05-29
Granted: 2000-05-23
Abstract: Disclosed herein are a method and apparatus for purifying silicon, which are suitable for economical and mass production of high-purity silicon for solar cells from regular-grade silicon containing boron and carbon in large quantities. The method comprises directing a plasma jet stream of an inert gas toward the surface of molten silicon held in a container lined with silica or a silica-based refractory. For improved purification, the inert gas as the plasma gas is mixed with 0.1-10 vol% steam and/or less than 1 g of silica powder per liter of the inert gas at normal state. Alternatively, the container may have a bottom opening and is provided with an electrode having a cooling means underneath the bottom of the container, with the electrode and the cathode of the plasma torch connected to a power source for plasma generation, so that the plasma jet and electron beam are directed toward the surface of molten silicon.
Patent CA-2047592-C (CA)
Title: Bonded rare earth magnet and a process for manufacturing the same
Inventor: MOHRI FUMIHITO
IPC: H01F1/057
Filed: 1991-07-23
Granted: 1996-10-15
Abstract: A highly rustproof resin-bonded magnet made by using a specific rustproofing resin for coating the particles of a magnetic powder, bonding them to form a molded body, or coating its surface, or for two or all of those purposes.   The specific resin is selected from ones containing groups of atoms having a power of forming a coordinate bond and a reducing action.  More specifically, it is (a) a high molecular compound produced by reacting with an epoxy resin one or more of a polyhydric phenol having adjacent hydroxyls, a polyhydric phenolic carboxylic acid having adjacent hydroxyls, an ester of a polyhydric phenol and a polyhydric alcohol having adjacent hydroxyls, and a polycyclic and polyhydric phenol having adjacent hydroxyls,  (b) a redox resin as a reduction agent, or (c) a high molecular compound produced by curing a mixture of ascorbic acid, or a derivative thereof, and an epoxy resin.
Patent CA-2052762-C (CA)
Title: Advanced synergistic system for heavy production
Inventor: RICHARDSON REGINALD D
IPC: C01B3/04
Filed: 1991-10-03
Granted: 2004-03-30
Abstract: An improved dual temperature hydrogen sulphide exchange process substantially cost reduced over processes specified heretofore for the production of large scale volumes of heavy water (D2O) in which the method of contacting natural heavy water by the H2S gas for the purpose of recovering deuterium is changed from a sieve tray tower means to a gas diffusion cell means and in a preferred simplified process flow arrangement, low level D enrichment by H2S exchange is closely integrated with a CECE assisted electrolysis process, with or without final vacuum distillation processing, to produce 99.75% pure heavy water at a breakthrough level of cost reduction.
Patent CA-2054955-C (CA)
Inventor: MORANCAIS JEAN-LUC
IPC: A61K8/37
Filed: 1991-11-02
Granted: 2004-02-10
Abstract: This composition consists in an aqueous dispersion D, lamellar structure lipid vesicles encapsulating an aqueous phase E; it is characterised by the fact that the lipid phase forming the layers of the said vesicles is at least partly made up of a compound as formula (I):   <IMAGE> (I)  wherein R represents a linear saturated on unsaturated hydrocarbonated chain containing 9 to 17 carbon atoms. The compounds (I) have the advantage that they are easily biodegradable and of very low cytotoxicity.
Patent CA-2058619-C (CA)
Title: Process for the preparation of substituted isoflavone derivatives
Inventor: KALLAY TAMAS
IPC: A61P3/02
Filed: 1990-04-06
Granted: 1999-05-04
Abstract: The invention relates to a process for the preparation of pure isoflavone derivatives of general formula (1), wherein R stands for hydrogen or isopropyl, R2 and R3 stand for hydrogen or C1-2 alkoxy by reacting a rezorcinol-derivative of general formula (III) wherein R2 and R3 are as given above with ethyl-orthoformiate of the formula (IV): (C2H5O)3CH in the presence of a bass and optionally by alkylating the product. The process is carried out by subjecting the compounds of general formula (III) and (IV), wherein R2 and R3 are as given above, to ring-closure at 70-100 °C in the presence of an organic solvent, preferably dimethyl-formamide and/or isopropanol in a 0.3-2-fold volume calculated to the volume of the rezorcinol derivatives and/or in the presence of excess of the ester of formula (IV) in order to produce a 20-70 % by weight solution (supersaturated) of the product of general formula (VII) wherein R2 and R3 are as given above, and whereby the product of general formula (VII), wherein R2 and R3 are as given above, continuously precipitates from the mixture and filtering the product of general formula (VII) after cooling from the reaction mixture and/or adding a polar or apolar solvent to the reaction mixture and selectively dissolving thus the side product and filtering the product of general formula (VII), wherein R2 and R3 are as given above, and/or adding to the reaction mixture an almost equivalent amount of anhydrous potassium carbonate and isolating the crystallized double salt of general formula (V) wherein R2 and R3 are as given above, whereafter the products of general formula (V) or (VII) are reacted with isopropil-halide and optionally separating the pure product containing at most 0.5 % by weight of contaminating compound of general formula (VI).
Patent CA-2059496-C (CA)
Title: Broaching tool
Inventor: KELM WALTER H
IPC: B23D43/04
Filed: 1992-01-16
Granted: 1996-11-12
Abstract: A broaching tool includes a holder and a plurality of broaching inserts mounted therein.  Spacers are situated between successive pairs of inserts and are formed of a tougher material than the inserts.  Each spacer includes a reinforcing web which abuts against a rear surface of its respective leading insert.  The reinforcing web extends higher than a lower level of the cutting edge of that respective leading insert, so as to reinforce that insert.  The web terminates short of its respective trailing insert, whereby a space is formed between the reinforcing web and the trailing insert for receiving chips formed by the latter.
Patent CA-2059761-C (CA)
Title: Shoe with insole as part sole filler and method of making same
Inventor: OBERG SVEN E
IPC: B29D35/08
Filed: 1992-01-21
Granted: 1999-09-28
Abstract: A method of manufacture of footwear and the footwear comprising the steps of providing a last with an upper thereon, providing a mold insert on the bottom of the last, providing a mold having a mold cavity fox a tread sole, disposing the last and upper against the mold with the mold insert disposed within the mold cavity, forming a sole in the mold cavity having a depression therein in the shape of the mold insert, providing an insole with a first portion in the shape of the depression and a second portion substantially in the shape of the sole and securing the first portion of the insole in the depression. The tread sole and insole are formed of materials preferably having different physical properties. The tread sole can include one of tongues and grooves and the insole would then have the other of tongues and grooves, said tongues and grooves mating with each other.      The step of providing an insole can include removing the mold insert from the last and mold cavity, disposing the last spaced from the tread sole and then forming the insole in the cavity formed by the removal of the weight relief and the spacing of the last from the tread sole.
Patent CA-2062218-C (CA)
Title: Silicon boron nitride ceramic and precursor compounds, a process for their preparation and their use
Inventor: JANSEN MARTIN
IPC: C08G77/62
Filed: 1992-03-03
Granted: 2002-01-29
Abstract: Silicon boron nitride ceramics are produced from polyborosilizanes obtained from polymerized Cl3Si-NH-BC1X wherein X is -C1 or -NH-Si-C13.
Patent CA-2068878-C (CA)
Title: Polycarbonates, uses thereof, processes for preparing and purifying same
Inventor: TANAKA MASAHIDE
IPC: C07H15/08
Filed: 1991-09-13
Granted: 2000-08-08
Abstract: Disclosed are polycarbonates of oligosaccharides or monosaccharides, sugar alcohols, pentaerythritol, neopentyl glycol or trimethylolmethane. These polycarbonates are useful as lubricating oil or electrical insulating oil. The polycarbonates are excellent in compatibility with hydrogenated fluorocarbon refrigerant as well as in lubricating properties, detergency and electrical insulating properties.
Patent CA-2071601-C (CA)
Title: Fungicidal composition
Inventor: SEELE RAINER
IPC: A01N43/653
Filed: 1992-06-18
Granted: 2002-11-19
Abstract: A fungicidal composition of 2-(1,2,4-triazol-1-ylmethyl)-2-(4-fluorophenyl)-3-(2-chlorophenyl)-oxirane of the formula (see Formula I) and 1-[N-n-propyl-N-2-(2,4,6-trichlorophenoxy)-ethylcarbamoyl]-imidazole (see Formula II) and methods of combating fungi with this composition.
Patent CA-2073720-C (CA)
Inventor: KINOSHITA ISAMU
IPC: G01M11/00
Filed: 1992-07-13
Granted: 1997-06-24
Abstract: Disclosed a method of assembly and inspection of optical fiber connectors which attaches connectors (54) to at least one cord end of a plurality of optical fiber cords  (24)  in which single or multiple optical  fibers  (52) are accommodated and inspects connection loss etc. due to connection of the connectors (54).    A process of connecting the connectors  (54) to cord ends where the connectors (54) are assembled is linked to a process of processing the other cord ends and then inspecting connection loss etc. of the optical fibers (52) due to a connection of the connectors (54).
Patent CA-2078395-C (CA)
Title: Method of transmitting messages between software processes in a multitasking data processing system
Inventor: DINNIS RICHARD E
IPC: G06F9/46
Filed: 1992-09-16
Granted: 2000-08-15
Abstract: In a data processing system that includes operating system software with a massaging capability, a method of transmitting a message between software processes includes a message clearing house that (a) receives a message transmittal request from a sending process; (b) generates a header for the message in accordance with the operating system's requirements, the header including information indicating the time at which the request is received, and the header being stored in a circular buffer to facilitate debugging; (c) determines an exchange address for the process that is to receive the message; and (d) transmits the message via the operating system to the exchange address of the receiving process.
Patent CA-2078594-C (CA)
Title: Method of preparing sunscreens
Inventor: TAPLEY CAROLE A M
IPC: C09C1/36
Filed: 1992-09-18
Granted: 1998-11-24
Abstract: A method of preparing sunscreens in which a dispersion of zinc oxide particles in an oil is formed by milling in the presence of a particulate grinding medium and mixed with cosmetically acceptable materials is claimed. The particles of zinc oxide have an average size of from 0.005 to 0.15 micron and the dispersion is substantially transparent to visible light but with an extinction coefficient at 308 nm (E(308)) and at 360 nm (E(360)) of at least 9 litres per gram per centimetre. The ratio E(360):E(308) is in the range 0.75:1 to 1.5:1. In a preferred method a mixed dispersion containing titanium dioxide and zinc oxide, having E(308) at least 15 litres per gram per centimetre, E(360) at least 10 litres per gram per centimetre and the ratio E(360):E(308) in the range 0.3:1 to 1.5:1 is used. The mixed dispersion is also claimed. The sunscreens prepared have a good balance of absorption for UVA and UVB radiation and better SPF values than those prepared from titanium dioxide and/or zinc oxide powders.
Patent CA-2080459-C (CA)
Title: Compositions for moisture curing hot melt adhesives
Inventor: KUDO KAZUHO
IPC: C08G18/20
Filed: 1992-04-06
Granted: 2002-09-17
Abstract: The present invention provides a composition for moisture curing hot melt adhesives which is superior in both moisture curing reactivity after adhesion and thermal stability during use. The composition of said moisture curing hot melt adhesives is characterized by containing a urethane prepolymer having one or more terminal isocyanate groups and a compound having the structure represented by the following formula (I):   (see formula I) (where X, Y and Z in the formula (I) are alkyl groups or groups represented by the following formula (II), and at least one of X, Y and Z is a group represented by the formula (II):     (see formula II) n in the formula (II) is an integer from 1 through 10, and R1 and R2 are hydrogen or alkyl groups.)
Patent CA-2089878-C (CA)
Title: Electrical distribution system with informational display
Inventor: BAILEY CURTIS J
IPC: H02J13/00
Filed: 1992-06-29
Granted: 2003-01-21
Abstract: For use within an electrical distribution system (10) used to control current paths through a plurality of associated circuit breakers (20), a circuit arrangement comprises a plurality of circuit breakers (20), each having a status related to open contact po-sition and a closed contact position. An informational display (92) is included within the load-center to display the plurality of statuses at a user access side of the display, and a control circuit (32), coupled to the circuit breakers and the informational dis-play, automatically monitors the contact status of the circuit breakers and drives the informational display so that a display of the statuses is provided.
Patent CA-2096178-C (CA)
Title: Toilet tank flushing mechanism
Inventor: BECKER HENRY A
IPC: E03D1/32
Filed: 1993-05-13
Granted: 1995-01-31
Abstract: A toilet tank flushing mechanism is disclosed. The toilet tank flushing mechanism comprises a ballcock mounted within the toilet tank for selectively permitting water from an external source to enter the tank. The ballcock includes a mounting plate securely connected thereto, which mounting plate has a primary float arm pivotally mounted thereto for movement between a raised shut-off position and a lowered flushing position, a holding member pivotally mounted thereto for movement between a holding position whereat the primary float arm is held in its raised shut-off position and a tilted release position whereat the primary float arm is released so as to be permitted to move to its lowered flushing position, a trigger member slidably mounted thereon for movement between a set position whereat the holding member is retained in its holding position and a freeing position whereat the holding member is suddenly freed so as to permit it to move to its tilted release position, and a substantially rigid water level tracking float arm pivotally mounted thereon for movement between a raised neutral position whereat the trigger member is held in the set position and a lowered trip position whereat the trigger member is caused to move to its releasing position.
Patent CA-2099606-C (CA)
Title: Powder mixture for making an undercoating agent for steel surfaces
Inventor: HERZOG SIGLINDE
IPC: C09D131/02
Filed: 1991-10-25
Granted: 2001-02-27
Abstract: The invention concerns a zinc-containing corrosion-protecting undercoating agent for steel surfaces. The undercoating agent, which contains no organic solvents, consists of a mixture of dry, water-emulsifiable dispersion agent in powder form and water-reactive zinc in powder or flake form which are mixed with water immediately before treatment. The corrosion-protection properties of undercoating agents prepared in this way are as good as those of prior art single-component zinc-dust undercoating agents using only organic solvents.
Patent CA-2108013-C (CA)
Title: Improvements in or relating to underwater excavation apparatus
Inventor: SILLS NICHOLAS VICTOR
IPC: E02F5/00
Filed: 1991-04-18
Granted: 2001-08-21
Abstract: The disclosure relates to an underwater excavation ap-paratus comprising a tube (10) in which a propeller (18) is mounted for rotation. The tips of the propeller blades are formed with jets (30) supplied from a high pressure water supply through passages in the propeller blades. The jets im-pinge on vanes (31) mounted on the tube wall around the propeller to cause the propeller to rotate and thereby draw water through the tube from an inlet at one end to an outlet at the other end to act on the sea bed. The apparatus is parti-cularly useful for excavating trenches on the sea bed and ex-posing previously covered installations on the sea bed and exposing previously covered installations on the sea bed.