Patents by Inventor Mikio Nakagawa

Mikio Nakagawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5856386
    Abstract: A crystalline thermoplastic resin composition comprises a rosin acid metallic salt and a crystalline thermoplastic resin. Optionally, a compatibilizing agent may also be included. The rosin acid metallic salt, which acts as a crystal nucleating agent, increases the crystallization rate of the crystalline thermoplastic resin and enables the formation of fine crystals of the resin. Thus, the crystalline thermoplastic resin composition can crystallize at a high rate, and provide molded articles having excellent mechanical properties and/or optical properties.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: January 5, 1999
    Assignees: Mitsui Petrochemicals Industries, Ltd., Arakawa Chemical Industries, Ltd.
    Inventors: Hideki Sakai, Mikio Nakagawa, Tetsuji Kasai, Kimio Ueda, Masao Maeda, Yukiharu Yamada, Hiroyuki Hori, Junji Tan, Kan Matsumoto
  • Patent number: 5783305
    Abstract: The invention provides an improved carbon fiber precursor finish which contains (A) the reaction product of a saturated aliphatic dicarboxylic acid and a monoalkyl ester of an alkylene oxide adduct of bisphenol A, to eliminate fluffs on precursors, and fused or broken precursors throughout stabilization and carbonization processes in carbon fiber production, and thus to provide precursors to be processed into quality high-performance carbon fibers.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: July 21, 1998
    Assignee: Matsumoto Yushi-Seiyaku Co. Ltd.
    Inventors: Takao Masaki, Tomoo Komatsubara, Yoshiaki Tanaka, Seizi Nakanishi, Mikio Nakagawa, Junji Kanamori
  • Patent number: 5725715
    Abstract: A squeezable tubular container (a) which is formed from a composition containing a polyethylene having a density of 0.900 to 0.975 g/cm.sup.3 and an ethylene/.alpha.-olefin copolymer having a density smaller than 0.900 g/cm.sup.3, (b) has a crosslinking caused under irradiation with electron beam, and (c) is sterilizable at a high temperature or is heat-sealable or ultrasonically sealable; and a process for the production thereof.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: March 10, 1998
    Assignees: Mitsui Petrochemical Industries, Ltd,, Yoshino Kogyosho Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Fumio Yoshii, Yasuo Futami, Masanobu Ishiyama, Gen Miyamoto, Hideo Kushida, Sei Nakajima, Takahiro Kurihara, Ryoji Sugawara, Hideshi Kawachi, Mikio Nakagawa
  • Patent number: 5565160
    Abstract: A squeezable tubular container (a) which is formed from a composition containing a polyethylene having a density of 0.900 to 0.975 g/cm.sup.3 and an ethylene/.alpha.-olefin copolymer having a density smaller than 0.900 g/cm.sup.3, (b) has a crosslinking caused under irradiation with electron beam, and (c) is sterilizable at a high temperature or is heat-sealable or ultrasonically sealable; and a process for the production thereof.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: October 15, 1996
    Assignees: Mitsui Petrochemical Industries, Ltd., Yoshino Kogyosho Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Fumio Yoshii, Yasuo Futami, Masanobu Ishiyama, Gen Miyamoto, Hideo Kushida, Sei Nakajima, Takahiro Kurihara, Ryoji Sugawara, Hideshi Kawachi, Mikio Nakagawa
  • Patent number: 5283232
    Abstract: A method for producing an oxide superconducting composite wire is disclosed, which comprises the steps of: (a) molding a powdered oxide superconductor material to form a wire; (b) heat treating the wire in an oxygen atmosphere thereby forming the wire into an oxide superconducting member; (c) forming a non-oxidizing metal intermediate layer on a surface of the oxide superconducting member; (d) bundling a plurality of the oxide superconducting members containing the intermediate layer; (e) inserting the bundled oxide superconducting members into an oxidizing metal support tube; and (f) drawing the product of step (e) to reduce its diameter and heat-treating it.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: February 1, 1994
    Assignee: Fujikura Ltd.
    Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa
  • Patent number: 5254530
    Abstract: A Bi-Sr-Ca-Cu-O-type superconductive film is formed on an MgO (100) single crystal substrate by the chemical vapor deposition method at a film formation speed of 780.degree. C. or less and a film formation speed of 1.0 nm/min or more, and exhibits an a-axis or b-axis preferential growth with respect to the substrate surface.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: October 19, 1993
    Assignees: International Superconductivity Technology Center, Ube Industries, Ltd., Sharp Corporatoin, Fujikura Ltd.
    Inventors: Tsunemi Sugimoto, Kazushi Sugawara, Mikio Nakagawa, Yuh Shiohara
  • Patent number: 5250349
    Abstract: An adhesive resin composition comprising an ethylene/vinyl acetate copolymer, a styrene polymer resin, graft-modified polyethylene, a polystyrene elastomer and an ethylene/.alpha.-olefin copolymer in combination is disclosed. This adhesive resin composition shows an excellent adhesiveness between a metal and a thermoplastic resin. When this adhesive resin composition is used for bonding a polyester resin and a gas-barrier resin, a good bonding which is not degraded even by high-temperature heating can be attained.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: October 5, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mikio Nakagawa, Masaharu Mito
  • Patent number: 5225482
    Abstract: An adhesive resin composition comprising an ethylene/vinyl acetate copolymer, a styrene polymer resin, graft-modified polyethylene, a polystyrene elastomer and an ethylene/.alpha.-olefin copolymer in combination is disclosed. This adhesive resin composition shows an excellent adhesiveness between a metal and a thermoplastic resin. When this adhesive resin composition is used for bonding a polyester resin and a gas-barrier resin, a good bonding which is not degraded even by high-temperature heating can be attained.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: July 6, 1993
    Assignee: Mitsui Petrochemical Industries Co., Ltd.
    Inventors: Mikio Nakagawa, Masaharu Mito
  • Patent number: 5198494
    Abstract: An adhesive resin composition comprising 1 to 30 parts by weight of a graft copolymerized polypropylene grafted partially or totally with 0.01 to 15 weight % of an unsaturated carboxylic acid or its derivatives and 100 parts by weight of a soft polymer, wherein the soft polymer is a styrene elastomer.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: March 30, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideshi Kawachi, Masaharu Mito, Mikio Nakagawa
  • Patent number: 5168127
    Abstract: A method of producing an oxide superconducting wire. A non-oxidizing metal layer is formed between an oxide superconducting material and an oxidizing metal support in order to prevent oxygen from being taken away from the oxide superconducting material by the oxidizing metal support during a subsequent heat treatment for producing an oxide superconductor to thereby obtaining a wire composite. The wire composite is then heated to produce the oxide superconductor.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: December 1, 1992
    Assignee: Fujikura Ltd.
    Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa
  • Patent number: 5128411
    Abstract: In accordance with the present invention, there are provided an adhesive resin composition comprising(A) 95-50% by weight of an ethylene/.alpha.-olefin copolymer having a density of 0.850-0.900 g/cm.sup.3 and the ethylene content of 75-95 mol %,(B) 5-50% by weight of a copolymer of ethylene and a radical polymerizable polar unsaturated monomer, said copolymer having the radical polymerizable polar unsaturated monomer content of 5-40% by weight, and(C) 1.0-30 parts by weight, based on 100 parts by weight of the sum of the above-mentioned (A)+(B), of a graft-modified polyethylene, a part or whole of said polyethylene has been graft-modified with an unsaturated carboxylic acid or its derivative, and a laminate using this adhesive resin composition.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: July 7, 1992
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Koichiro Sato, Mineo Kubo, Mikio Nakagawa
  • Patent number: 5108986
    Abstract: The invention relates to a superconductor manufacturing method and a superconductor manufactured by the method. More particularly, the invention is concerned wih an oxide superconductor of lamellar perovskite type and a method of manufacturing the same having extemely high critical temperature and critical current density as compared with conventional alloy superconductors or intermetallic compound superconductos. The superconductor is expressed byA-B-Cu-OwhereA represents at least one of elements of the group IIIa in the periodic table; andB represents at least one of elements of the group IIa in the periodic table,wherein at least one A and B consists of two elements belonging to the same group.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: April 28, 1992
    Assignee: Fujikura Ltd.
    Inventors: Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Masaru Sugimoto, Mikio Nakagawa, Shin'ya Aoki
  • Patent number: 5065126
    Abstract: In a linear actuator including a casing, an output shaft passing through the casing and being mounted slidably in a direction along the axis thereof, a solenoid coil disposed within the casing in coaxial relation to the output shaft, a magnet disposed in such a manner that the magnetic flux thereof is linked with windings of the coil, the output shaft mechanically connected to one of the magnet and the coil to form a movable part, and a spring adapted to urge the output shaft in one direction along the axis thereof, and a spacer made of high permeability material and interposed between the casing and either the coil or the magnet, whichever is fixed on the casing to form a stationary part.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: November 12, 1991
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hidemi Suzuki, Hiroyuki Yamada, Mikio Nakagawa
  • Patent number: 5055526
    Abstract: In accordance with the present invention, there are provided an adhesive resin composition comprising(A) 95-50% by weight of an ethylene/.alpha.-olefin copolymer having a density of 0.850-0.900 g/cm.sup.3 and the ethylene content of 75-95 mol %.(B) 5-50% by weight of a copolymer of ethylene and a radical polymerizable polar unsaturated monomer, said copolymer having the radical polymerizable polar unsaturated monomer content of 5-40% by weight, and(C) 1.0-30 parts by weight, based on 100 parts by weight of the sum of the above-mentioned (A)+(B), of a graft-modified polyethylene, a part or whole of said polythylene has been graft-modified with an unsaturated carboxylic acid or its derivative, and a laminate using this adhesive resin composition.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: October 8, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Koichiro Sato, Mineo Kubo, Mikio Nakagawa
  • Patent number: 5045527
    Abstract: A method of producing a superconductor including a superconductive oxide. At least one material is pressed for forming a filling material, the at least one material being selected from the group consisting of a starting material powder of the superconductive oxide, a powder of the superconductive oxide and a compact made of the starting material powder and/or the superconductive oxide powder, for forming a filling material. The filling material is charged into a metallic pipe to form a preform. The preform is moved along an axis thereof. During moving, the preform is swaged perpendicularly to the axis thereof to form a composite having a metallic sheath, made of the metallic pipe, and a core sheathed with the metallic sheath. The core of the composite is heated for producing the superconductive oxide.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: September 3, 1991
    Assignee: Fujikura Ltd.
    Inventors: Yoshimitsu Ikeno, Osamu Kohno, Kenji Goto, Atsushi Kume, Shin'ya Aoki, Nobuyuki Sadakata, Masaru Sugimoto, Toshio Usui, Mikio Nakagawa, Taichi Yamaguchi
  • Patent number: 4992766
    Abstract: In a linear actuator provided with a first projection on a movable part which is linearly driven with the electromagnetic force, so as to engage with one end of a compressing coil spring, and/or a second projection on a stationary part as opposed to the movable part, so as to engage with the other end of the coil spring, and a cup-like washer interposed between said at least one of the projections and said coil spring, a washer is so adapted that said at least one of projections is allowed to collide with the inner bottom part thereof. The linear actuator may comprise a resin film of small friction coefficient interposed between the movable part and the stationary part destined to contact with each other, a thermosensitive resistor which has an opposite resistance-temperature coefficient of the coil and is connected in series to the coil, and/or a means for detecting the relative position of the movable part with respect to the stationary part.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: February 12, 1991
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hidemi Suzuki, Horiyuki Yamada, Mikio Nakagawa
  • Patent number: 4965245
    Abstract: A method of producing a superconducting cable or a coil including an A-B-C-D system superconductor where the A includes an element of group IIIa of the Periodic Table, the B an element of group IIa of the Periodic Table, C copper, D oxygen.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: October 23, 1990
    Assignee: Fujikura Ltd.
    Inventors: Masaru Sugimoto, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Mikio Nakagawa, Shin'ya Aoki, Masayuki Tan, Ryuichi Okiai, Syotaro Yoshida, Masakazu Hasegawa, Hiroshi Yamanouchi
  • Patent number: 4900612
    Abstract: A laminated structure comprising, laminated in the order stated,(A) a layer of polycarbonate or a layer of a polyester,(B) a layer of a modified ethylene/alpha-olefin random copolymer, the modified copolymer containing about 0.01 to 10% by weight, based on the trunk ethylene/alpha-olefin random copolymer, of an unsaturated carboxylic acid or its derivative grafted thereto, and having an ethylene content of 75 to 95 mole %, a melt flow rate of 0.1 to 50 g/10 min., a density of 0.850 to 0.905 g/cm.sup.3 and a crystallinity of less than 10%, and(C) a layer of a saponified olefin/vinyl acetate copolymer or a layer of a polyamide resin.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: February 13, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Koichiro Sato, Mikio Nakagawa, Kuniaki Kanemoto, Akito Nishimura
  • Patent number: 4885273
    Abstract: A method of producing a superconducting wire including A-B-C-D system oxide superconductor wherein A is an at least one element of group IIIa of the Periodic Table, B is an at least one alkali earth metal, C includes Cu and D includes O. In the method, a material containing at least one of both A and B is arranged inside or outside an elongated tubular coating layer, which includes a copper alloy and at least the other one, to form a composite element. Then, the composite element undergoes a heat treatment to produce the superconductor.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: December 5, 1989
    Assignee: Fujikura Ltd.
    Inventors: Mamoru Sugimoto, Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Shin'ya Aoki, Mikio Nakagawa
  • Patent number: 4670349
    Abstract: An adhesive resin composition comprising(A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer and ethylene/alpha-olefin random copolymers,(B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and(C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the romatic ring is hydrogenated;provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: June 2, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mikio Nakagawa, Koichiro Sato, Kuniaki Kanemoto, Akito Nishimura