Patents Examined by Patrick Jewik
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Patent number: 5399430Abstract: The invention is a continuous, substrate-free fiber comprising amorphous boron having a tensile strength ranging from about 750 kpsi to over 1000 kpsi, and a diameter which may be varied with the number or diffraction limited laser focal spot size to provide fiber diameter as small as 0.01 micron.Type: GrantFiled: April 1, 1992Date of Patent: March 21, 1995Assignee: Clemson UniversityInventor: Paul C. Nordine
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Patent number: 5399415Abstract: A process for fabricating mechanically interconnected, released, electrically isolated metal microstructures, and circuit components and actuators produced by the process. A dielectric stack on a substrate is patterned and etched to produce trenches in which a metal such as tungsten is deposited. The dielectric is removed from selected regions of the metal to expose metal beams, and to form mechanically interconnecting, electrically insulating hinges supporting the beams. The beams and hinges are then released for relative motion. Electrical potentials may be established between adjacent beams to produce controlled motion.Type: GrantFiled: June 4, 1993Date of Patent: March 21, 1995Assignee: Cornell Research Foundation, Inc.Inventors: Liang-Yu Chen, Noel C. MacDonald
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Patent number: 5389444Abstract: An organic electroluminescence device having a high brightness, a high luminescence efficiency and a long service life. The organic electroluminescence device including two opposing electrodes and having disposed therebetween a polycarbonate polymer containing a styrylamine skeleton or a diarylvinylene arylene skeleton as a repeating unit.Type: GrantFiled: May 11, 1993Date of Patent: February 14, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Chishio Hosokawa, Shuji Sakamoto, Tadashi Kusumoto
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Patent number: 5384197Abstract: A superconducting magnet coil contains a coil of superconducting wire and a cured product of a curable resin composition with which the coil has been impregnated, the cured product having a thermal shrinkage factor of 1.5-0.3%, preferably 1.0-0.3%, when cooled from the glass transition temperature to 4.2K, a bend-breaking strain of 2.9-3.9%, preferably 3.2-3.9%, at 4.2K and a modulus of 500-1,000 kg/mm.sup.2 at 4.2K, or undergoing a thermal stress of 0-10 kg/mm.sup.2 when cooled from the glass transition temperature to 4.2K and resisting to quench during superconducting operation.Type: GrantFiled: December 22, 1993Date of Patent: January 24, 1995Assignee: Hitachi, Ltd.Inventors: Toru Koyama, Koo Honjo, Masao Suzuki, Akio Takahashi, Akio Mukoh, Keiji Fukushi, Seiji Numata
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Patent number: 5382465Abstract: Anthraquinonic colorant represented by the formula (I): ##STR1## wherein Q.sup.1 and Q.sup.2 are each independently substituted or unsubstituted anthraquinonyl groups, Z.sup.1 and Z.sup.2 are bridge groups, A is an aromatic divalent group, and n is 0 or 1. The polarizing film contains at least one colorant of present invention in a hydrophobic resin. The film has excellent durability and moisture resistance.Type: GrantFiled: May 18, 1993Date of Patent: January 17, 1995Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tsutami Misawa, Hisato Itoh, Tsutomu Nishizawa, Masami Nakano, Hiroyuki Katayama
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Patent number: 5372992Abstract: A superconducting thin film of a compound oxide represented by YBa.sub.2 Cu.sub.3 O.sub.y in which "y" is a number of 6<y<8 and deposited on a substrate, characterized in that a buffer layer of a compound oxide represented by Y.sub.2 BaCuO.sub.x in which "x" is a number of 4<x<6 is interposed between the superconducting thin film and the substrate.Type: GrantFiled: January 3, 1994Date of Patent: December 13, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hideo Itozaki, Kenjiro Higaki, Shuji Yazu
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Patent number: 5366811Abstract: An electroluminescence device (organic EL device) which comprises a pair of electrodes with an emitting layer therebetween. The emitting layer contains a dimerized styryl compound of the formula ##STR1## wherein D and D' are each an arylene group or a divalent aromatic heterocyclic group, E, E', F, F' G and G' are each a hydrogen, an aryl group, an alkyl group, an aralkyl group, an alkoxyl group or a monovalent aromatic heterocyclic group and Q is a divalent group which breaks the conjugation. The dimerized styryl compound has a desirable light emitting efficiency which serves to increase the molecular weight to improve the thin film property. The organic EL device of the present invention is useful in preparing display devices.Type: GrantFiled: May 4, 1992Date of Patent: November 22, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hisahiro Higashi, Chishio Hosokawa, Hiroshi Tokailin
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Patent number: 5362575Abstract: A membrane is supported at its edge by an annular, tapered skirt structure. The skirt strengthens the attachment of the membrane to the support ring and reinforces the edge region where the membrane would otherwise tend to fail. Stress concentrations are reduced by providing a skirt or featheredge, on the interior side of the skirt, that meets the membrane at a relatively small effective contact angle. In a preferred embodiment, the membrane is made by depositing a polysilicon layer on the surface of a substrate of silica-based glass. A portion of the substrate is removed by an isotropic, selective etchant, such that a portion of the polysilicon layer remains as a free-standing, tensile film supported by a remaining portion of the substrate.Type: GrantFiled: December 31, 1992Date of Patent: November 8, 1994Assignee: AT&T Bell LaboratoriesInventor: Lee E. Trimble
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Patent number: 5358775Abstract: A high dielectric constant (K'.gtoreq.4), low thermal coefficient of dielectric constant (TCK'.ltoreq.150 ppm/.degree. C.) electrical substrate material comprises a fluoropolymer (preferably PTFE) filled with particulate ceramic material (powder) which exhibits low loss, comparatively high K' and acceptable TCK'. Examples of such ceramic powders include "class 1" capacitor ceramics. In accordance with an important feature of this invention, it has been discovered that it is insufficient to use only a low TCK' filler (e.g., class 1 capacitor ceramic powder) in the fluoropolymeric binder in order to achieve the desired TCK'. Instead, it has been discovered that the coefficient of thermal expansion (CTE) of the composite must also be sufficiently low (e.g.,.ltoreq.35 ppm/.degree. C.) to result in a composite which consistently maintains a low TCK'. This low CTE is achieved by adding one or more additional particulate ceramic fillers.Type: GrantFiled: July 29, 1993Date of Patent: October 25, 1994Assignee: Rogers CorporationInventor: Allen F. Horn, III
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Patent number: 5354607Abstract: Static eliminator device includes a nonmetallic pultruded composite member having a plurality of conductive carbon fibers provided within a polymer matrix of thermosetting resin, wherein the plurality of carbon fibers are oriented within the polymer matrix in a longitudinal direction of the pultruded composite member and extend continuously therethrough. The pultruded composite member has at least one laser fibrillated end including a brush-like structure of densely distributed filament contacts formed from an exposed length of the carbon fibers for contact with the surface. The brush-like structure has either a straight edge configuration or a shaped configuration. The static eliminator device may include a base member for holding the pultruded composite member, wherein the base member electrically communicates with the plurality of conductive fibers to permit the electrical charge to pass therefrom.Type: GrantFiled: February 24, 1993Date of Patent: October 11, 1994Assignee: Xerox CorporationInventors: Joseph A. Swift, Thomas E. Orlowski, Stanley J. Wallace, Wilbur M. Peck, John E. Courtney, David E. Rollins
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Patent number: 5350621Abstract: Dimensionally stable laminates of epoxy resin reinforced with glass fibers have a coefficient of thermal expansion which matches that of copper, making possible copper foil covered laminates which provide improved registration in multilayer printed circuit boards. New glass fabric styles provide balanced thermal expansion in both the warp and fill directions.Type: GrantFiled: November 30, 1992Date of Patent: September 27, 1994Assignee: Allied-Signal Inc.Inventors: Donald E. Yuhas, Carol L. Vorres, David P. Groppi, Jiri D. Konicek
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Patent number: 5348792Abstract: This multilayered wiring board having a multilayered wiring structure includes a first mesh wiring layer having a plurality of holes therein, and a second wiring layer having a plurality of wirings. The wirings of the second wiring layer undulate up and down so as to descend towards the holes formed in the first wiring layer. In another arrangement, the first wiring layer has a plurality of protrusions protruding toward the second wiring layer at locations between adjacent ones of the wirings of the second wiring layer. In these wiring boards, crosstalk between the wirings is suppressed.Type: GrantFiled: April 19, 1993Date of Patent: September 20, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hisao Hattori, Tomohiko Ihara, Hiroshi Yoshino, Shosaku Yamanaka
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Patent number: 5346749Abstract: A process for manufacturing insulating ceramic inserts used as sealed passages for electrical conductors through a metallic wall, is described wherein a green ceramic plate is subjected to silk-screen printing with the aid of a conducting ink, generally in ring-shaped patterns. The patterns are pressed and holes are pierced through the center of the ring and through at least one other green plate. The silk-screen printed plate is pressed against the at least one other green plate, or between two other green plates, bringing the holes into coincidence. A cut-out is made around each of the holes and the outer lateral surface of the part obtained is metallized. The part is then heat treated in order to fire and sinter same. It also is possible for the sintering to be performed before the metallization of the outer lateral surface.Type: GrantFiled: March 23, 1993Date of Patent: September 13, 1994Assignee: N-XeramInventor: Armand Bettinelli
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Patent number: 5344694Abstract: A liquid developer for electrostatic photography, said liquid developer comprising resin particles dispersed in a non-aqueous solvent having a volume resistivity of at least 10.sup.9 .OMEGA.cm, said dispersed resin particles being obtained by polymerizing(a) at least one member of methyl methacrylate and ethyl methacrylate soluble in said non-aqueous solvent and(b) at least one member selected from the group consisting of acrylic esters and methacrylic esters having an alkyl group having not more than 4 carbon atoms, said esters being soluble in said non-aqueous solvent, but being made insoluble by polymerization,said components (a) and (b) being polymerized in the presence of a dispersion stabilizing resin which is soluble in said non-aqueous solvent, and said dispersion stabilizing resin comprising a graft copolymer formed by polymerizing(i) at least one member of macromonomers (M) having a weight-average molecular weight of 1.times.10.sup.3 to 4.times.10.sup.Type: GrantFiled: May 19, 1992Date of Patent: September 6, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Kenji Sano, Nobuo Suzuki, Syu Watarai
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Patent number: 5342826Abstract: A Bi-Sr-Ca-Cu-O system superconducting thin film formed on a substrate comprising [110] single crystals of an ABO.sub.3 type oxide having a perovskite structure, in which a (119) face is selectively grown relative to a substrate surface. The film is formed on the substrate by chemical vapor deposition process. A method of manufacturing a BiSrCaCuO system superconducting film in which an a-axis is oriented preferentially relative to the surface of a substrate comprising MgO (100) single crystals, wherein the chemical composition ratio (Sr+Ca+Cu)/Bi of the BiSrCaCuO system superconducting film is made not less than 3.5. A Bi-Sr-Ca-Cu-O system superconducting thin film formed on a substrate comprising MgO [110] single crystals, in which a (110) face is selectively grown to the substrate surface. The film is formed on the substrate by a chemical vapor deposition process.Type: GrantFiled: September 24, 1992Date of Patent: August 30, 1994Assignees: International Superconductivity Technology center, Ishikawajima-Harima Heavy Industries Co., Ltd., Sharp CorporationInventors: Nobuhiko Kubota, Tsunemi Sugimoto, Kazushi Sugawara, Yuh Shiohara
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Patent number: 5342671Abstract: A sheet for use in a printing process has an image receiving surface on one side and an invisible magnetic coating on the reverse side. The magnetic coating contains encoded data used to determine the nonrecording side of the sheet to prevent printing on the wrong side of the sheet. The encoded data is machine readable and contains information on the printing characteristics of the image receiving surface of the sheet.Type: GrantFiled: June 5, 1992Date of Patent: August 30, 1994Assignee: Eastman Kodak CompanyInventor: Stanley W. Stephenson
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Patent number: 5340799Abstract: Rare-earth alkaline metal titanates are used as buffer layers substrates, and oxygen diffusion barriers for the growth of high critical temperature superconductors, ferroelectrics, pyroelectrics and piezoelectrics.Type: GrantFiled: June 18, 1993Date of Patent: August 23, 1994Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Arthur Tauber, Steven C. Tidrow
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Patent number: 5338598Abstract: Composite articles sintered polycrystalline ceramic reinforcing members in a co-sintered, inorganic, preferably ceramic matrix, formed by disposing arrays of green reinforcement precursor structures in a matrix preform and then consolidating the preform by compacting, debindering, and pressureless sintering, the resulting co-sintered composites exhibiting zero open porosity, high density, and improved work-of-fracture characteristics, are described.Type: GrantFiled: December 14, 1992Date of Patent: August 16, 1994Assignee: Corning IncorporatedInventor: Thomas D. Ketcham
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Patent number: 5336546Abstract: An organic electroluminescence device including an oxadiazole or thiadiazole compound interposed between two electrons. The compound is of the formula ##STR1## wherein Z.sup.1 and Z.sup.2 are each an unsubstituted or substituted aromatic group; Y.sup.1 and Y.sup.2 are each an unsubstituted or substituted aromatic group; Q is --O--, --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --; or --C(CH.sub.3).sub.2 ; and X is --O-- or --S--. The organic electroluminescence device has a high brightness, a high luminous efficiency and a long service life.Type: GrantFiled: February 3, 1993Date of Patent: August 9, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yoshio Hironaka, Hiroshi Tokailin, Chishio Hosokawa, Tadashi Kusumoto
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Patent number: 5334435Abstract: A recording liquid for ink-jet recording comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving the coloring matter therein. The liquid medium is ethanol and the coloring matter is a dye represented by the following general formula (A): ##STR1## or the following general formula (B): ##STR2## as an image-forming component.Type: GrantFiled: November 20, 1992Date of Patent: August 2, 1994Assignee: Eastman Kodak CompanyInventors: Louis J. Rossi, Sunita P. Chavan