baber/WOPTO huggingface dataset:
Patent CA-2034797-C (CA)
Title: Optical amplifier with bent, single-mode active fiber
Inventor: RIGHETTI ALDO
IPC: H04B10/17
Filed: 1991-01-23
Granted: 1997-12-30
Abstract: An optical amplifier, particularly useful for optical fiber telecommunication lines, which includes an active fiber doped with a fluorescent dopant which provides light energy emission at the wavelength of the transmission signals when the latter signals are applied thereto.  One section of telecommunication line is connected to one input of a dichroic coupler, the output of which is connected to one end of the active fiber and the other input of which is connected to a source of pumping energy at a wavelength lower than that of the transmission signals.  The other end of the active fiber is connected to another section of the telecommunication line.  In rectilinear form, the active fiber provides single-mode propagation of the energy at the signal wavelength and multi-mode propagation of energy at the pumping energy wavelength.  However, the active fiber is bent to a radius of curvature for at least 70% of its length which will provide only fundamental mode propagation at the pumping energy wavelength which also reduces the mode diameter for the transmission signals.
Patent CA-2037563-C (CA)
Title: Electronic measurement apparatus movable in a cased borehole and compensating for casing resistance differences
Inventor: VAIL WILLIAM BANNING III
IPC: G01V3/24
Filed: 1991-03-05
Granted: 2001-08-07
Abstract: The invention describes new methods of operation of an apparatus having at least two pairs of voltage measurement electrodes vertically disposed in a cased well to measure the resistivity of adjacent geological formations from inside the cased well. During stationary measurements with the apparatus at a fixed vertical depth within the cased well, the invention herein discloses methods of operation which include a measurement step and subsequent first and second compensation steps respectively resulting in improved accuracy of measurement. The invention also discloses multiple frequency methods of operation resulting in improved accuracy of measurement while the apparatus is simultaneously moved vertically in the cased well. The multiple frequency methods of operation disclose a first A.C. current having a first frequency that is conducted from the casing into formation and a second A.C. current having a second frequency that is conducted along the casing. The multiple frequency methods of operation simultaneously provide the measurement step and two compensation steps necessary to acquire accurate results while the apparatus is moved vertically in the cased well.
Patent CA-2038359-C (CA)
Title: Ethylene propylene rubber composition
Inventor: NAKATA RIKIZOU
IPC: C08K13/02
Filed: 1991-03-15
Granted: 1996-03-26
Abstract: An ethylene propylene rubber composition is disclosed, comprising 100 parts by weight of a polymer component, at least 5 parts by weight of a softener, and a hydrated magnesium silicate-based clay mineral in an amount of from 0.05 to 0.5 times the weight of said softener.   The rubber composition provides a molded article free from bleeding of softeners.
Patent CA-2045879-C (CA)
Title: Die casting machine
Inventor: PERRELLA GUIDO
IPC: B22D17/26
Filed: 1991-06-27
Granted: 2003-11-11
Abstract: A die casting machine having a frame comprising two side platens connected by connecting rods; a moving platen, connecting rod apertures in said moving platen, a moving platen drive and two dies, wherein one side platen is connected to one end of the connecting rods, the other side platen is connected to the opposite end of the connecting rods, the moving platen is guided by said connecting rods for movement towards and away from respective side platen, movement is effected by said moving platen drive, one die mounted on the inside face of the moving platen, and the other die mounted on the inside face of one side platen, characterized by said die casting machine having a solid frame comprising two substantially inextensible connecting rods and two side platens; the two substantially inextensible connecting rods, the moving platen drive and the centers of the dies being in a common plane passing through the longitudinal centerline of the die casting machine.
Patent CA-2049706-C (CA)
Title: Disc shaped recording medium and recording/reproducing apparatus therefor
Inventor: OHGA NORIO
IPC: G11B11/105
Filed: 1991-08-22
Granted: 2000-11-14
Abstract: A disc-shaped recording medium and a recording/reproducing apparatus employing the disc-shaped recording medium as a recording medium, are disclosed. The recording medium has a diameter of not more than 80 mm, and a recording track is formed on the recording medium with a track pitch of approximately 1 .6m.      An information in excess of 130 Mbytes is recorded in a data compressed state on the recording track and the recording medium is rotationally driven at a constant linear velocity for recording and optically reproducing the information. The recording/reproducing apparatus employing the disc-shaped recording medium as a recording medium includes a buffer memory between a data compressing circuit for compressing input digital data and a recording encoding circuit for processing the compressed data by modulation suitable for recording, as long as a recording system of the apparatus is concerned, and a buffer memory between a playback decoding circuit for processing the compressed data by error correct ion decoding and demodulation complementary to the modulation and a data expansion circuit for expandihg the compressed data to the original state. By suitably selecting,the capacity of the buffer memories, recording and reproduction may continue satisfactorily even if the scanning position of the recording head and the optical head undergoes track jump during recording or reproduction.
Patent CA-2050480-C (CA)
Title: Process for non-polluting spray painting with a dispersion of oven drying paint in water
Inventor: SCHLUMPF GEORG
IPC: B05B15/12
Filed: 1990-08-15
Granted: 1997-12-23
Abstract: When painting in a spray booth (1) with water flowing down the rear wall (2), the waste water from the booth is divided into permeate and paint-containing residue by ultra-filtration (13).  The permeate is recycled.  Fresh paint dispersion is supplied.  The paint is preferably an alkyd resin or a combination of alkyd and acryl resin.  The dispersion contains a coalescence-inhibiting component, preferably one or more aliphatic amines with an average molecular weight of 75 to 133 or their mixtures or derivatives, and a drying inhibition component.  The waste water from the booth contains a penetration adjusting component, preferably a glycol derivative.  The dispersion and/or the waste water from the booth may contain a biocidal component.  The conductivity of the cold water is dept below a limit value of preferably 10-4ohm-1cm-1, preferably by reverse osmosis.  The paint-containing residue from the waste water from the booth is enriched by the extraction of water until its paint content is roughly equal to that of the fresh dispersion.  The residue thus enriched is re-used.  The enrichment and the re-use may be continuous or discontinuous and in the latter case the enriched residue is stored meanwhile.
Patent CA-2053282-C (CA)
Title: Label holder attachments for product information display tags
Inventor: FAST JACOB
IPC: A47F5/08
Filed: 1990-04-30
Granted: 1999-01-05
Abstract: ABSTRACT OF THE DISCLOSURE            A label holder attachment (44) is provided for the distal end of an elongate product information di play tag (46) of the kind that extends over a horizontally disposed product support hook (52).  The label holder attachment (44) may be used, for example, to provide temporary product information such as sale or special offer pricing.  The label holder attachment (44) has a pair of fold-down tabs (38) which can be squeezed together and inserted through an elongate slot (53) at the distal end of the tag (46) in order to mount the attachment (44) on the tag (46).  The attachment (44) also has a label holding portion (40) which extends forwardly of the tag (44) and which can take a number of different forms.
Patent CA-2055476-C (CA)
Title: Ski pole handle
Inventor: DONDERO JOHN
IPC: A63C11/22
Filed: 1990-05-15
Granted: 1996-12-24
Abstract: Ski pole handle comprising a grip element (1) and a ? (2) fastened to it for transfer of pushing forces from the user's hand to an appurtenant pole (7), said handle comprising an elastic auxiliary strap (6) which is fastened to the grip element (1) and is adapted to keep the grip element in a grip position relavely to the hand (8) even if the hand drops the grip element (1).
Patent CA-2065121-C (CA)
Title: Method and apparatus for printing a fibrous web
Inventor: BOULANGER ROGER
IPC: B41F13/11
Filed: 1992-04-03
Granted: 1997-06-24
Abstract: An apparatus for printing a fibrous web with a decorative pattern, comprising a printing roll having a cavity forming a shaped ink transfer zone to print a principal pattern on the fibrous web through rolling contact therewith, and an array of small recesses in a spaced  apart  relationship  surrounding the  cavity and having the ability to trap dirt particles adhering to the printing roll which are being trained over its relief surface by a doctor blade scraping excess ink therefrom.          The array of recesses provides a  cleaning action by continuously   dislodging   dirt   particles   collecting underneath the leading edge of the doctor blade and preventing the dirt particles from agglomerating into large flocs which may interfere with the operation of the doctor blade.  The array of recesses also defines an ink transfer zone printing on the fibrous web a relatively faint background pattern upon which the principal pattern is visually eminent.   The invention also extends to a method for conditioning a printing roll to prevent dirt particles from accumulating under a doctor blade used in association with the printing roll.
Patent CA-2065399-C (CA)
Title: Producing electrosuspensions
Inventor: SZIRMAI STEPHEN GEORGE
IPC: C23C24/00
Filed: 1990-08-09
Granted: 2001-07-31
Abstract: Production of an electrosuspension of particles (5), comprising an insulating container (3) fitted with two spaced apart electrodes (2, 4) between which a high electrical potential is ap-plied. At least one of the electrodes (2) is mounted for rotation by an associated electric motor (20). The electrode mounted for rotation preferably has a drum like configuration formed by a plurality of circumferentially spaced apart conductors (6). In a second aspect the invention produces an electrosuspension of micronised particles where one of the electrodes is in contact with a bed of particles and a sec-ond electrode is spaced above the particles.       Field concentrating conductors are connected with the second electrode to generate ions and irradiate the surface of the particulate material with ions of opposite polarity to the first elec-trode.
Patent CA-2069078-C (CA)
Title: Smoking articles
Inventor: DITTRICH DAVID JOHN
IPC: A24D1/00
Filed: 1992-05-20
Granted: 1997-05-20
Abstract: The invention relates to low delivery cigarettes, usually having a mainstream particulate matter delivery of about 9mg or less.     The cigarettes(1) comprise a rod (2)  of tobacco material and a filter element (3).  The filter element (3) comprises an alkali filter material section (4) having a loading level of less than 12% by weight of the section.  The characteristics of the  cigarettes  (1)  are  arranged  so  that,  when  smoked,  the alkaline  filter material  is  exposed  to an  amount  of  smoke acceptable to achieve an increased perception of smoke impact.     This is usually achieved by using a low particulate matter potential rod.   In this way the moisture free dry particulate matter  (NFDPM)  to nicotine ratio is decreased compared with control cigarettes having the same cigarette characteristics without the addition of alkaline filter material to the filter element.
Patent CA-2070453-C (CA)
Title: Terminal block segment with feet for mounting on tracks of two different widths
Inventor: MORANSKI JEFFREY A
IPC: H01R9/26
Filed: 1992-06-05
Granted: 2005-08-16
Abstract: A terminal block segment with one pair of feet for mounting on symmetrical tracks of two different widths includes a base with a central portion, two legs spaced from the central portion, and two feet. Each foot includes an inner toe and groove that is spaced from the central portion of the base for receiving an outside edge of a respective rail on a first mounting track and an outer toe and groove that is spaced further from the central portion than the first groove for receiving an outside edge of a respective rail on a second mounting track that is wider than the first mounting track. As one foot is levered off a rail with a screwdriver, various surfaces come into play on the two feet depending on the width of track and whether it is initially contacting the inner toes or the outer toes.
Patent CA-2070680-C (CA)
Title: Process for coating electrically conductive substrates, aqueous enamel, epoxide amine adduct and use of the epoxide amine adduct as a friction resin for preparing pigment pastes
Inventor: OTT GUENTHER
IPC: C09D5/44
Filed: 1990-12-17
Granted: 1997-03-25
Abstract: In order to increase the stone chip resistance of automobile finishes aqueous electrocoating paints are used which are produced by the use of a pigment paste which contains as grinding resin an at least partially protonated epoxide-amine adduct which is obtainable by reacting (A)  a glycidyl ether of a polyphenol which contains on statistical average at least one epoxide group in the molecule, or a mixture of such glycidyl ethers, (B)  a polyglycidyl ether of a polyol which contains on statistical average more than 1.0 epoxide groups in the molecule,  or a mixture of such polyglycidyl ethers, and (C) a compound which contains a primary amino group in the molecule or a mixture of such compounds with each other in such a stoichiometric ratio that an epoxide-amine adduct is obtained in which on statistical average at least 2.0 primary amino groups of the com-ponent (C) are incorporated in a chain-extending function with the  formation of  tertiary amino groups and the resultant epoxide-amine adduct  is  at  least partially protonated.
Patent CA-2071317-C (CA)
Title: Nox reducing device for fuel-fired heating appliances
Inventor: MULLENS LARRY R
IPC: F28F13/12
Filed: 1992-06-16
Granted: 1998-04-14
Abstract: Elongated metal devices are coaxially inserted into,  and closely received within, inlet end portions of the heat exchanger combustor  tubes  of  a fuel-fired  heating  appliance, representatively a forced air heating furnace.  The inserted devices function to substantially reduce the NOx content of the combustion  gases  ultimately  discharged  from  the  furnace  by intercepting,  dispersing,  and thermally  quenching  the  burner flames drawn through the combustor tubes by a draft inducer fan portion of the furnace.   Each device is formed by a pair of elongated,  generally rectangular   slotted metal plate members which are longitudinally overlapped and transversely secured to one another in a manner providing the device with a generally cross-shaped cross section along its length.  Elongated slots are formed in the four outer side edges of the device for operational sound reduction purposes.  An alternate embodiment of the device is formed by welding together two elongated metal members each having an L-shaped cross section.   Due to the cross-sectional configurations of the devices, they perform their NOx reducing functions  without  generating  an appreciable amount  of  noise during  operation of their associated  furnace.    The  improved furnace  is  accordingly  suitable  for  indoor  residential installations.   The devices  may also be incorporated in the combustor tubes of other types of fuel-fired heating appliances such as water heaters and boilers.
Patent CA-2071401-C (CA)
Title: Graft copolymers prepared by two-staged aqueous emulsion polymerization
Inventor: AMICK DAVID RICHARD
IPC: C08F257/00
Filed: 1992-06-17
Granted: 2004-06-15
Abstract: This invention relates to a two stage aqueous emulsion polymerization process for making graft copolymers. In the first stage, at least one first ethylenically unsaturated monomer is polymerized in the presence of at least one mercapto-olefin compound to form a macromonomer with terminal functional groups. In the second stage, at least one second ethylenically unsaturated monomer is polymerized in the presence of the macromonomer such that a copolymer is formed with a backbone of polymerized units of the at least one second ethylenically unsaturated monomer and side chains of the macromonomer.
Patent CA-2073460-C (CA)
Title: High strength, high fracture toughness alloy
Inventor: HEMPHILL RAYMOND M
IPC: C22C38/52
Filed: 1991-02-05
Granted: 1999-12-14
Abstract: A high strength, high fracture toughness steel alloy consisting essentially of, in weight percent, about C 0.2-0.33, Mn 0.20 max., Si 0.1 max., P 0.008 Max,, S 0.004 max., Cr 2-4, Ni 10.5-15, Mo 0.75-1.75, Co 8-17, Ce effective amount-0.030, La effective amount-0.01, Fe balance, and an article made 'therefrom are disclosed. A small but effective amount of calcium can be present in this alloy in substitution for some or all of the cerium and lanthanum. The alloy is an age-hardenable martensitic steel alloy which provides a unique combination of tensile strength and fracture toughness. The alloy provides excellent mechanical properties when hardened by vacuum heat treatment with inert gas cooling and has a low ductile-to-brittle transition temperature.
Patent CA-2078391-C (CA)
Title: Microwave oven using a precoated sheet steel as walls of an internal chamber thereof
Inventor: UENO YOSHIHARU
IPC: H05B6/80
Filed: 1992-09-16
Granted: 1999-02-09
Abstract: A microwave oven having an internal chamber with walls of a precoated sheet steel which has no harmful effect on food sanitation.  The precoated sheet steel is comprised of a  sheet steel coated on one side with a  strontium chromate primer comprising strontium chromate dispersion-mixed with a resin.   A paint layer is applied over the strontium chromate primer, and a paint is applied over the other  side of the  sheet  steel.   The one  side  of  the precoated sheet steel constitutes the exterior surfaces of the walls of the internal chamber and the other side of the precoated sheet steel constitutes the interior surfaces of the walls of the internal chamber.   A molybdenum primer comprising molybdenum pigment dispersion-mixed with a resin may be applied to one or both sides of the sheet steel instead of the strontium chromate primer.
Patent CA-2083216-C (CA)
Title: Electrical energy meter with a precision integrator for current measurement
Inventor: VOISINE JOHN T
IPC: G01R21/06
Filed: 1992-11-18
Granted: 1998-08-25
Abstract: A current measurement circuit for an electrical energy meter of the type having an inductive current pickup which generates a signal proportional to the derivative of current with respect to time in an electrical power line.  An underdamped integrator is provided which compensates for nonideal phase characteristics of the inductive current pickup including a phase deviation from 90° at the nominal line frequency.  The integrator has a transfer function with a magnitude peak at a frequency below the line frequency and with a phase shift deviating from 90° at the line frequency.
Patent CA-2085949-C (CA)
Inventor: DENNY BARRY DOUGLAS
IPC: G09F3/02
Filed: 1992-12-21
Granted: 2003-06-10
Abstract: A label/leaflet assembly includes a support web with a release coating on which is placed an adhesive label with a leaflet secured on its front face. The leaflet has a front cover one end of which extends beyond the underlying panels of the leaflets.      This end of the leaflet has a first part which is permanently joined to the main body of the front cover and which is releasably and re-sealably adherent to the label, and a second part which is permanently secured by an adhesive to the label and is connected to the first part and/or the main body of the front cover along one or more tear lines. Until opened the leaflet is held firmly sealed by the second part. When opened the leaflet is re-sealable, but the torn tear lines show that the leaflet has been opened. The assembly is thus tamper-evident.
Patent CA-2086323-C (CA)
Inventor: MCEVER RODGER P
IPC: A61K47/48
Filed: 1991-07-17
Granted: 2002-05-14
Abstract: Peptides derived from three regions of the lectin binding region of GMP-140 have been found to selectively interact with "selectins", including GMP-140, ELAM-1, and lymphocyte homing receptor. The three regions include amino acids 19-34, 54-72, and 66-89, based on the numbers of the residues contained in the peptide, with residue 1 de-fined as the N terminus of the mature protein after cleavage of the sig-nal peptide. Fucosylated sialyated lactosamine structures that bind to GMP-140 have also been discovered. The structure is created by ex-pression of .alpha.(1,3) fucosyltransferases capable of modifying acceptors containing .alpha.(2,3) sialic acid-substituted lactosaminoglycans. Le x, Ga1.beta.1,4(Fuc.alpha.1,3)GIcNAc.beta.1-R (where R is a protein or other carbohy-drate structure) forms the core of this sialyated structure. The peptides and carbohydrate structures are useful as diagnostics and for clinical applications in the modulation or inhibition of coagulation processes or inflammatory processes.
Patent CA-2091776-C (CA)
Title: Liposome extrusion process
Inventor: COE ROYDEN M
IPC: B01J13/02
Filed: 1991-10-04
Granted: 1999-08-31
Abstract: A method of sizing liposomes by passing a suspension of liposomes through an aluminum oxide porous film under pressure is disclosed. In a preferred embodiment, the porous film is a branched type anodic aluminum oxide porous film. The process produces a population of liposomes substantially free of liposomes above a pre-determined maximum size useful in administering drugs or other bioactive agents, such as in the treatment of cancer or AIDS-related illnesses. Also disclosed for carrying out the method is an apparatus comprising one or more fitter assemblies for holding the aluminum oxide porous film in operational configuration (33), a pressurized supply vessel for supplying the suspension of liposomes under pressure to filter assemblies (31), and a receiving vessel for receiving the filtrate from the filter assemblies (32).
Patent CA-2095633-C (CA)
Inventor: GARRARD LISA J
IPC: C12Q1/68
Filed: 1991-12-03
Granted: 2003-02-04
Abstract: A method for selecting novel proteins such as growth hormone and antibody fragment variants having altered bind-ing properties for their respective receptor molecules is pro-vided. The method comprises fusing a gene encoding a protein of interest to the carboxy terminal domain of the gene III coat protein of the filamentous phage M13. The gene fusion is mu-tated to form a library of structurally related fusion proteins that are expressed in low quantity on the surface of a phagem-id particle.  Biological selection and screening are employed to identify novel ligands useful as drug candidates. Disclosed are preferred phangemid expression vectors and selected human growth hormone variants.