baber/WOPTO huggingface dataset:
Patent CA-2071598-C (CA)
Title: Optical device and method of manufacturing the same
Inventor: EDA AKIRA
IPC: G03F7/00
Filed: 1992-06-18
Granted: 1999-01-19
Abstract: At least one convex arcuate face (or concave arcuate face) is formed by photolithography on a photoresist layer formed on a surface of an optical device constituted from an optical material, and the surface of the optical device and the photoresist film are etched continuously or stepwise to form on the surface of the optical device at least one convex arcuate face (or concave arcuate face) similar to the convex arcuate face (or concave arcuate face) of the photoresist film.  In case the optical material is polished into a mirror face, a photoresist film is formed on the polished face, and the polished face and the photoresist film are etched uniformly.  An optical device obtained in this manner is used for a laser oscillator, a monolithic laser system, a non-linear optical device, a microlens, a ring laser and so forth.          On the other hand, a plurality of reflecting portions are provided on each of a pair of opposing faces of a light transmitting optical material, and a reflecting portion of at least one of the faces is formed from a convex arcuate face formed on the surface of the light transmitting optical material.  A zigzag optical path is formed between the reflecting portions of the opposing faces of the light transmitting optical material such that it couples the reflecting portions alternately to each other, thereby to obtain an optical device having a long optical path.  The optical device is employed as a higher harmonic wave converting device for light of a high efficiency for a short wavelength laser apparatus.
Patent CA-2073145-C (CA)
Title: Resin composition for thermosetting coating
Inventor: MIYAZAKI EIICHIRO
IPC: C08L61/32
Filed: 1992-07-03
Granted: 2000-03-14
Abstract: Disclosed in a resin composition for thermosetting coating, which comprises: (a1) an acrylic copolymer having a particular acid value and/or (a2) an acrylic copolymer having a particular acid value and a particular hydroxyl value, (b) an acrylic copolymer having a particular epoxy equivalent, (c) a monobasic acid having a dissociation constant (pKa) of 3 or less, and, as necessary, (d) an amino resin, and (e) a quaternary phosphonium salt, wherein the equivalent ratio of the acid groups of (a1) and/or (a2) to the epoxy groups of (b) is 1:0.5 to 0.5:1 and the amounts of (c), (d) and (e) are 0.01-5 parts by weight, 1-25 parts by weight and 0.01-3 parts by weight, respectively, per 100 parts by weight of the total of (a1) and/or (a2) and (b). The resin composition, when used as a clear coating for automobiles, is superior in film appearance, acid resistance, solvent resistance, water resistance, weatherability, storage stability and low temperature curing.
Patent CA-2082153-C (CA)
Title: Line interface circuit
Inventor: MCGINN DONALD S
IPC: H04M19/00
Filed: 1991-06-12
Granted: 1995-01-10
Abstract: 2082153 9200643 PCTABS00010 A line interface circuit for coupling signals between a telephone line (2, 3) and a hybrid circuit (61, 64) includes a loop driver circuit for supplying energizing current to the telephone line and for driving the telephone line with alternating current signals. A loop current detector (31) connected in series between the telephone line and the loop driver circuit, generates a voltage signal in response to current flow in the telephone line. Amplifier circuits (21, 25) are arranged to be responsive to differential signals on the telephone line, and to signals from the hybrid circuit, for generating a composite signal. The composite signal and the voltage signal are combined in a network (40) having an output connected to control the operation of the loop driver (51) circuit so that the telephone line is terminated with a preferred impedance.
Patent CA-2082348-C (CA)
Title: Thin drawer slide
Inventor: JORDAN KENT ALEX
IPC: A47B88/493
Filed: 1992-11-06
Granted: 1996-06-18
Abstract: A thin profile drawer slide apparatus for slidably supporting a heavy drawer in an article of furniture. There are outside channels to attach the apparatus to a drawer and an article of furniture.  Bearings are retained in the channel by parallel, opposed bearing retainers, and by a one-piece, generally "I"-shaped intermediate slide member or retaining member, unitarily formed with top and bottom parallel raceways for guiding the bearing retainers.  Use of a single intermediate slide member with raceways for four separate sets of bearings enables construction of a thin, strong drawer slide for carrying heavy loads.
Patent CA-2082919-C (CA)
Title: Method for diagnosing an electrically controlled mechanical device
Inventor: COCHRAN CHERYL P
IPC: G06F11/267
Filed: 1992-11-13
Granted: 1997-03-18
Abstract: A method for analyzing in real time the performance of an electrically controlled mechanical device is provided.  It includes a method for monitoring control parameters which are important to know on a microprocessor clock-cycle-by-clock-cycle basis so that the various components of the system can be synchronized with each other if needed, and their performance analyzed.  A method is also provided for monitoring control parameters over a plurality of microprocessor clock cycles so that histograms can be obtained for analyzing the performance of the device.
Patent CA-2087037-C (CA)
Inventor: LIBERTI PAUL A
IPC: G01N33/483
Filed: 1991-08-30
Granted: 2002-01-15
Abstract: Magnetic separation ap-paratus and method for sepa-rating colloidal magnetic parti-cles from a non-magnetic test medium in which the magnetic particles are suspended. The separator comprises a contain-er (23) holding the non-magne-tic test medium, one or more magnetic wires (25) disposed substantially within the test medium in the container and an external magnet (31) for producing a magnetic field gra-dient within the test medium.   According to the method of the invention, the container (23) holding; the test medium is po-sitioned in the separator (21), producing a magnetic field gra-dient operative to cause the magnetic particles to be attract-ed to the areas surrounding the magnetized wires (25) and to adhere to the wires. The non-magnetic test medium is separated from the magnetized particles, which may conveniently be washed while adhered to the wires, and subjected to further analysis, prefetably while on the wires. The apparatus and method are useful in separating various target substances from test media by means of substances coated on the magnetic particles which bind specifically to the target substance. A modified buffer solution, when added to the test medium, reduces non-specific binding of the magnetic colloid particles to cells.
Patent CA-2097525-C (CA)
Inventor: SOKOL JOHN C
IPC: C01B11/12
Filed: 1993-06-02
Granted: 2000-05-02
Abstract: A process for continuously producing chlorine dioxide by reacting an alkali metal chlorate, sulfuric acid or another chlorine free mineral acid and hydrogen peroxide as reducing agent to produce chlorine dioxide in an aqueous reaction medium.      In the process chlorine dioxide is generated in at least one reaction step comprising at least one reaction vessel, by feeding alkali metal chlorate, acid, hydrogen peroxide and inert gas to said reaction vessel, in substantial absence of added chloride ions. The aqueous reaction medium in said reaction vessel is maintained at a pressure of from about 400 mm Hg to about 900 mm Hg and at a temperature of from about 35°C to about 100°C and at an acidity within a range from about 4 to about 14 N and the chlorate concentration of between about 0.05 moles/l to saturation. Chlorine dioxide, oxygen and inert gas and the depleted aqueous reaction medium is withdrawn from said reaction zone without substantial crystallization of alkali metal sulfate.
Patent CA-2102661-C (CA)
Title: Differential amplifier circuit using quadritail circuit
Inventor: KIMURA KATSUJI
IPC: H03F3/45
Filed: 1993-11-08
Granted: 1996-04-09
Abstract: A differential amplifier circuit including a quadritail circuit and a differential pair of transistors.  The quadritail circuit has a first pair of first and second MOS transistors, a second pair of third and fourth MOS transistors,  and a constant current source for driving the first and second pairs.      The differential pair is composed of fifth and sixth MOS transistors and driven by an output current of the quadritail circuit.  An input voltage is applied between the gates of the first and second transistors and between the gates of the fifth and sixth transistors.  A DC voltage is applied to the common-connected gates of the third and fourth transistors.  An output current is derived from an output end of the differential pair.          The transconductance linearity of the differential amplifier circuit can be improved.
Patent CA-2108391-C (CA)
Title: Fuel delivery system for diesel engines
Inventor: EKSTAM CHARLES L
IPC: F02M37/54
Filed: 1993-10-14
Granted: 2004-07-20
Abstract: A fuel delivery system for removing air from fuel delivered to an engine, and particularly a diesel engine, includes an engine, a primary water separation filter, and a secondary air separation filter. The air separation filter is located downstream from the water separation filter for delivering substantially gas-free fuel to the engine. The air separation filter includes a vessel, a fuel inlet into the vessel, a fuel outlet leading to th e engine, a fuel return discharge leading to the fuel tank, and a filter cartridge including filter media presenting numerous small openings therein for permitting the passage of fuel therethrough but screening out bubbles entrapped in the fuel. As the bubbles are trapped on the screen, they float upward to the fuel level and then spill over the upper margin of an upright tube within the vessel leading to the fuel return discharge and then to the fuel tank so that only substantially gas-free fuel is delivered to the engin e.
Patent CA-2110653-C (CA)
Title: Packet network interface
Inventor: KUMAR VIJAY P
IPC: H04L12/56
Filed: 1993-12-03
Granted: 2001-01-02
Abstract: A packet switch interface, which may be an asynchronous transfer mode (ATM) layer interface chip, may be connected to the inputs or the outputs of a packet switch. The interface chip modifies the virtual path identifier and the virtual channel identifier in packets directed to and from the switch. The interface chip also manipulates routing tags for the packets which are used for internal routing purposes in the switch. The interface chip includes a local interface through which packets may be extracted from or added to a packet stream flowing between a main input and a main output of the interface. The interface chip polices different communications channels handled in the interface chip by detecting whether traffic in those channels exceeds certain network usage parameters. The interface is also capable of gathering certain statistical information about the traffic in certain communications channels to allow evaluation of network performance. These operations are performed in hardware on a single integrated circuit chip involving a single table look up.  This table look up involves addressing a content addressable memory with a predetermined portion of the header of a packet. Finding a match between the predetermined portion of the packet header and the content of the content addressable memory causes the memory to produce an address signal which acts as a pointer to a location in a random address memory containing a parameter block having data used to perform the operations of the interface.
Patent CA-2113908-C (CA)
Title: 1-[n-(halo-3-pyridylmethyl)]-n-methylamino-1-alkylamino-2- nitroethylene derivatives for controlling fleas in domestic animals
Inventor: FRIEDEL THOMAS
IPC: A61K31/44
Filed: 1992-05-23
Granted: 2003-03-25
Abstract: The compounds of formula I are described   wherein Hal is halogen, such as fluorine, chlorine, bromine or iodine;    R1 is hydrogen, C1-C6alkyl or C3-C7cycloalkyl;    R2 is hydrogen, C1-C6alkyl or C3-C7cycloalkyl, and R3 is hydrogen or C1-C6alkyl, for use in a method of controlling fleas in domestic animals, especially in dogs and cats, wherein systemic administration is preferred. The compounds of formula I are adminis-tered in an amount effective against fleas via the digestive tract or via the blood of the host animal and thus systemically to the domestic animal, especially the dog or the cat.
Patent CA-2114578-C (CA)
Title: Balise identificatrice pour infrastructures
Inventor: DESCHENES EMMANUEL
IPC: E04H12/22
Filed: 1994-01-31
Granted: 1999-04-13
Abstract: Lors des manoeuvres de deneigement, il est reconnu que les conducteurs de machinerie utilisent des machines de plus en plus rapides et performantes dans but d'accélérer le travail. Cette-méthode nécessite donc que les infrastructures telles que les trottoirs, chaines de rues, bordures de stationnements et d'allées de circulation, susceptibles d'être cachées par la neige, soient identifiées par un balisage adéquat de façon à ne pas être endommagées par la machinerie et à ne pas non plus endommager celle-ci. Dans les systêmes de balisage présentement utilisés, aucun n'est conçu pour être installé aux infrastructures mentionnées. Comme il est d'usage que le balisage hivernal soit installé à l'automne pour être enlevé au printemps, l'objet de cette invention est de fournir un système de balisage s'installant directement aux infrastructures, dont la tige-repère est d'installation façile et rapide et identifie avec préçision les ouvrages que la neige pourrait cacher durant l'hiver.
Patent CA-2119955-C (CA)
Title: Flying insect trap using reflected and radiated light
Inventor: NELSON THOMAS D
IPC: A01M1/04
Filed: 1994-03-25
Granted: 2002-08-27
Abstract: An insect trap using attractant light, comprising a source of light and a housing can be mounted on a vertical surface or placed near a ceiling surface. The housing and the source of light cooperate to form an upwardly facing opening for the facilitated entry of flying insect pests and for the reflection of light onto the vertical surface. Insects that enter the trap are immobilized on a surface within the trap. Cooperation between direct radiant light, reflected light and an upwardly facing entrance for insects substantially increase capture rates.
Patent CA-2121847-C (CA)
Inventor: HELFRICH G BAIRD
IPC: A61M25/00
Filed: 1994-04-21
Granted: 1998-09-15
Abstract: A peritoneal dialysis catheter has annular cuffs at one or more locations along its length.  The cuffs are of a woven material to promote tissue ingrowth and thereby anchor the catheter to the body.   The catheter has internal channels extending from ports located outside the body to deliver disinfecting fluid to the space between the cuffs and the catheter exterior, preventing infections from reaching the cuffs and reducing the frequency of new implants.
Patent CA-2124598-C (CA)
Inventor: LAFOND LUC
IPC: E06B3/673
Filed: 1994-05-26
Granted: 2003-05-13
Abstract: There is disclosed an apparatus for applying a length of spacer material to a substrate having sides and ends comprising advancing means for advancing a substrate from a first position to a second position,    applying means for applying a length of spacer material to said substrate,  said last-mentioned means having advancing means for advancing a length of spacer material from a supply thereof, means for placing said length of spacer material into juxtaposition with said substrate along at least one side and one end of said substrate, means for advancing said applying means along a length of said substrate,  means for notching said spacer material at a corner position in the length of said spacer material.   The apparatus has the advantage of simple construction and a very efficient operation eliminating the necessity for manual application of spacer strips to glass lites.
Patent CA-2131662-C (CA)
Inventor: KOCH MICHEL
IPC: C07H15/252
Filed: 1994-09-08
Granted: 2008-09-02
Abstract: Enzymatically cleavable prodrugs with reduced Michaelis-Menten constant (Km) are described.
Patent CA-2132783-C (CA)
Inventor: PINCHUK LEONARD
IPC: C08J7/046
Filed: 1994-09-23
Granted: 2001-12-25
Abstract: Lubricious silicone surface modifying treatments and/or coatings for modifying the frictional or slip surface characteristics of shaped elastomeric articles are provided in surface modifications including a coating or surface modifying composition comprising: a crosslinkable silane having the formula:   (see formula I) wherein R is selected from unsubstituted and halogen-substituted aliphatic, cycloaliphatic, aromatic and alkyl aromatic groups having less than or equal to about ten carbon atoms, R1 is independently selected from hydrogen, hydroxyl, halogen, alkoxy and acyloxy groups, R2 is independently selected from hydrogen, alkyl and halogen-substituted alkyl groups, n is an integer of 1 to 3 inclusive, and m = a - n. The cured, highly crosslinked, three dimensional silicone coatings are effective at reducing the coefficient of friction of surfaces of shaped elastomeric article, such as those frequently used in medical devices, by a factors of from about 50% to about 80% as compared with the same uncoated substrates.
Patent CA-2135724-C (CA)
Title: Environmentally safe work platform
Inventor: WILDNER ROBERT J
IPC: B24C9/00
Filed: 1994-11-14
Granted: 1999-01-26
Abstract: A worker platform assembly is modular in construction so as to be configurable according to the configuration and size, particularly width, requirements of each bridge and to metal surfaces thereof which are to be reconditioned by abrasive stripping and recoating.  The assembled platform is suspendable at each end by suspension frame assemblies which are rollable along the parapets of the bridge for repositioning the platform assembly,  with the suspension assembly being adjustable to various configurations of parapets.  An adjustable curtain frame enables sealed enclosure of bridge surfaces to be treated and optimum access of workers to those surfaces during the treatment. Airborne residue is evacuated by vacuum for subsequent disposal in a manner which does not contaminate the environment, while heavier  residue  and  spent  abrasive  grit  is  collected  and positively moved off of the platform assembly for subsequent, environmentally safe separation and reconstitution of the grit for reuse.
Patent CA-2149560-C (CA)
Title: Arrangement for dynamically deriving a telephone network management database from telephone network data
Inventor: LUDWICZAK KAREN M
IPC: H04Q3/00
Filed: 1995-05-17
Granted: 1998-10-13
Abstract: A network management facility is adapted so that it obtains information including connectivity data as well as the identities of discrete network elements from an associated network and then uses the information to determine the configuration of the network. The management facility then generates, for storage in a network management database, data records characterizing the configuration of the network, as defined by the components, circuits, etc., forming the network. Once the database has been created in this manner, the network management system may thenuse the contents of the database to provision requests entered by network users, for example, a request for additional transmission bandwidth. The database may also be used to evaluate a network condition, such as a condition characterized by a trouble alarm. Further, the network management system automatically updates the contentsof the database to reflect a change in the associated network, thereby eliminating the need to rely on personnel to perform that task.
Patent CA-2150359-C (CA)
Inventor: CONEY MICHAEL WILLOUGHBY ESSEX
IPC: F02G1/044
Filed: 1993-12-01
Granted: 2005-10-04
Abstract: An engine is provided comprising a compression chamber to contain gas to be compressed and a first piston to compress the gas by movement of the piston into the compression chamber, and driving means are arranged to drive the first piston into the compression chamber to compress the gas. The heat engine further comprises an expansion chamber and a second piston to allow gas to expand therein by movement of the second piston out of the expansion chamber, means to feed compressed gas from the compression chamber to the expansion chamber, and heating means arranged to heat the compressed gas from the compression chamber. Transmission means are operatively coupled to the second piston to permit power from the engine to be drawn and means to form spray of liquid in the compression chamber is provided to cool the gas during compression.
Patent CA-2150480-C (CA)
Title: Halogen-free flame retardant compositions
Inventor: BANDYOPADHYAY PRADIP K
IPC: C08K3/32
Filed: 1993-12-02
Granted: 2005-02-22
Abstract: A halogen-free composition comprising 100 parts of polyolefin resin grafted with from 1 to 10 parts maleic anhydride; from 0.1 part to 10 parts of a free radical catalyst therefor, from 0.5 part to 10 parts of an antioxidant, and from 5 parts to 500 parts of at least one ammonium polyphosphate containing flame retardant, and articles made therefrom, including halogen-free electrical tape backings.
Patent CA-2158937-C (CA)
Inventor: DUBENSKY THOMAS W JR
IPC: C07H21/04
Filed: 1994-09-15
Granted: 2006-01-03
Abstract: La présente invention se rapporte à une composition et à des procédés d'utilisation de vecteurs composés d'alphavirus recombinants.
Patent CA-2159109-C (CA)
Inventor: PIERCE GLENN F
IPC: C12N15/12
Filed: 1994-03-24
Granted: 2004-11-16
Abstract: Based on extensive in vivo studies in animals, it has now been discovered that KGF stimulates proliferation, growth and differentiation in various cells of epithelial tissue, besides keratinocytes. This better understanding of the biological effects of KGF in vivo' enables the use of this polypeptide as a therapeutic agent, suitably formulated is a pharmaceutical composition, for the specific treatment of disease states and medical conditions afflicting tissues and organs such as the dermal adnexae, the liver, the lung, and the gastrointestinal tract.
Patent CA-2162053-C (CA)
Title: Shoe sole component and shoe sole component construction method
Inventor: SKAJA JOSEPH J
IPC: A43B13/40
Filed: 1994-05-03
Granted: 2003-12-16
Abstract: A high polymer resin material is configured into a shoe sole component having a plurality of inwardly extending indentations in one or both of the top and bottom members of the component. The indentations extend into the interval between the members and adjacent to the opposite member to provide support members for the sole component. The sole component can be constructed by molding upper and lower sole component halves wherein the molds are configured to provide indentations in the top and bottom members. The upper and lower sole component halves are then joined to complete the sole component.
Patent CA-2167019-C (CA)
Inventor: MORGAN NOREDIN
IPC: E01F9/06
Filed: 1996-01-11
Granted: 1999-11-09
Abstract: Disclosed are surface markings systems and methods of producing such systems in which the marker is at once permanently and strongly affixed to the surface during normal use thereof but efficiently and economically removable from the surface during repair or recycling operations. The preferred systems utilize a reactive adhesive which, when cured, has a lap shear strength of at least about 1000 psi at about 25C and a lap shear strength of about 50 psi or less at at least one temperature in the temperature range of from about 70C to about 180C. The use of curable epoxy adhesives is described.