Patents by Inventor Junichi Koshiba

Junichi Koshiba 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).

  • Publication number: 20200272000
    Abstract: A display apparatus includes: a pixel electrode; a switching element that is connected to the pixel electrode; a scanning line that transfers a signal by which the switching element is driven; an image line that transfers a signal by which the pixel electrode is charged; a liquid crystal layer that includes liquid crystal molecules; a plurality of domains that are different in alignment direction of the liquid crystal molecules when a voltage is applied to the liquid crystal layer; an alignment boundary portion that is positioned in a boundary of the plurality of domains; an alignment film that aligns the liquid crystal molecules, and a capacitor line that extends along the transverse direction and is arranged so as to be overlapped with the pixel electrode with an insulating film in between and overlapped with at least a part of the alignment boundary portion.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Inventors: Junichi MORINAGA, Hiroyuki OHGAMI, Takahiro KOSHIBA
  • Publication number: 20060155068
    Abstract: A rubber composition containing no reinforcing agent, which comprises (A) 55 to 95 parts by weight of an ethylene-?-olefin-non-conjugated diene copolymer rubber, (B) 5 to 45 parts by weight of a natural rubber, and (C) 0.1 to 15 parts by weight of an organic peroxide, wherein the total amount of the components (A) and (B) is 100 parts by weight; a process for producing a rubber composition comprising the steps of (1) kneading at least said components (A) and (B), and (2) mixing at least the kneaded product with said component (C); a process for producing a molded article containing a vulcanized rubber composition, which comprises the above kneading step (1), the above mixing step (2), and the step (3) of molding the rubber composition at elevated temperature; and a vibration-proof material which comprises a molded article containing a vulcanized rubber composition produced according to the above-mentioned process.
    Type: Application
    Filed: December 15, 2005
    Publication date: July 13, 2006
    Inventors: Sadayuki Nakano, Junichi Koshiba, Akio Mase, Norihito Kimura
  • Patent number: 6734218
    Abstract: There are provided: (i) a process for producing a foamed rubber having a density of less than 0.50 g/cm3, which comprises the step of foaming and cross-linking a rubber composition containing (i) an ethylene-&agr;-olefin copolymer rubber, (ii) a vulcanizing agent and (iii) a foaming agent having a particle diameter of not more than 10 &mgr;m in terms of a median diameter, wherein an amount of the foaming agent exceeds 4.0 parts by weight per 100 parts by weight of the ethylene-&agr;-olefin copolymer rubber, and (ii) a sealing material for car use, which comprises the foamed rubber obtained by the above-mentioned process for producing a foamed rubber.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 11, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Junichi Koshiba
  • Patent number: 6716931
    Abstract: There is provided vulcanized solid rubber, which comprises a vulcanized product of an oil-extended copolymer comprising: (i) 100 parts by weight of an ethylene-&agr;-olefin-non-conjugated diene copolymer satisfying the following requirements (1) to (4), and (ii) 10 to 90 parts by weight of an extender oil: (1) a weight ratio of an ethylene unit to an &agr;-olefin unit in the ethylene-&agr;-olefin-non-conjugated diene copolymer is from 73/27 to 40/60, (2) an iodine value of the ethylene-&agr;-olefin-non-conjugated diene copolymer is from 20 to 36, (3) Mooney viscosity (ML1+4 (121° C.)) measured according to JIS-K-6300 of a blend containing 100 parts by weight of the ethylene-&agr;-olefin-non-conjugated diene copolymer and 20 parts by weight of an extender oil is from 100 to 180, and (4) a ratio of weight average molecular chain length/number average molecular chain length measured by gel permeation chromatography of the ethylene-&agr;-olefin-non-conjugated diene copolymer is from 3 to 5.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: April 6, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Junichi Koshiba, Sadayuki Nakano
  • Publication number: 20030149188
    Abstract: There is provided vulcanized solid rubber, which comprises a vulcanized product of an oil-extended copolymer comprising:
    Type: Application
    Filed: April 2, 2002
    Publication date: August 7, 2003
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Junichi Koshiba, Sadayuki Nakano
  • Publication number: 20030114545
    Abstract: There are provided:
    Type: Application
    Filed: September 4, 2002
    Publication date: June 19, 2003
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Junichi Koshiba
  • Patent number: 6384290
    Abstract: An oil-extended copolymer for sponge comprising an ethylene-&agr;-olefin nonconjugated diene copolymer satisfying the following conditions (1) to (4), and an extender oil in an amount of 10 to 90 parts by weight based on 100 parts by weight of said copolymer. (1) a weight ratio of ethylene/&agr;-olefin of 73/27 to 40/60, (2) an iodine value of 20 to 36 which represents a non-conjugated diene content, (3) a Mooney viscosity (ML 1+4 (121° C.) in Mooney viscosity according to JIS-K-6300) of 100 to 180 as measured for a mixture formed by compounding 20 parts by weight of an extender oil based on 100 parts by weight of said copolymer, and (4) a Q-value (a weight average of molecular chain/number average of molecular chain) of 3 to 5 as measured by gel-permeation chromatography (GPC) of said copolymer.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: May 7, 2002
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventor: Junichi Koshiba
  • Publication number: 20010021449
    Abstract: A foamed rubber obtainable by a process including the steps of:
    Type: Application
    Filed: February 12, 2001
    Publication date: September 13, 2001
    Inventors: Junichi Koshiba, Tatsuo Sassa
  • Patent number: 5179156
    Abstract: Herein is disclosed a vulcanizable rubber composition comprising a copolymer rubber constituted of ethylene, propylene and nonconjugated polyene, wherein ethylene/propylene molar ratio is 78/22 to 97/3 and the total content of propylene and nonconjugated polyene is 6 to 30% by mole in said copolymer rubber. By the use of the rubber composition of the present invention, a vulcanized product excellent in tensile strength, heat resistance, oil resistance, compression set resistance and flex behavior can be obtained. The vulcanized product can be used as automobile parts and other innumerable articles such as socket cover, heat resistant hose, electric wire, condenser cap, heat resistant belt, vibration-proof rubber, hoses, weather strip, seal sponge, black side wall of tire, etc.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: January 12, 1993
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyoshi Takao, Hiroyuki Harada, Kiyoyuki Sugimori, Nobuyuki Yoshida, Masahiro Fukuyama, Hideaki Yamada, Junichi Koshiba
  • Patent number: 5118773
    Abstract: Herein is disclosed a vulcanizable rubber composition comprising a copolymer rubber constituted of ethylene, propylene and nonconjugated polyene, wherein ethylene/propylene molar ratio is 78/22 to 97/3 and the total content of propylene and nonconjugated polyene is 6 to 30% by mole in said copolymer rubber. By the use of the rubber composition of the present invention, a vulcanized product excellent in tensile strength, heat resistance, oil resistance, compression set resistance and flex behavior can be obtained. The vulcanized product can be used as automobile parts and other innumerable articles such as socket cover, heat resistant hose, electric wire, condenser cap, heat resistant belt, vibration-proof rubber, hoses weather strip, seal sponge, black side wall of tire, etc.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: June 2, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyoshi Takao, Hiroyuki Harada, Kiyoyuki Sugimori, Nobuyuki Yoshida, Masahiro Fukuyama, Hideaki Yamada, Junichi Koshiba
  • Patent number: 5100964
    Abstract: A rubber composition is disclosed, comprising (a) 100 parts by weight of a synthetic rubber and (b) from 0.5 to 10 parts by weight of an alkylene oxide adduct of a saponified ethylene-saturated carboxylic acid vinyl ester copolymer. The rubbber composition can provide a vulcanized rubber composition which can retain its excellent appearance over a prolonged period of time because of freedom from blooming, has excellent antistatic performance due to its electrical conductivity, can be colored in various tints including white, and also has excellent properties in terms of tensile strength and specific gravity.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: March 31, 1992
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Keisaku Yamamoto, Yoshio Tanimoto, Kiyoshi Ikeda, Nobuhiro Natsuyama, Sumio Hara, Junichi Koshiba
  • Patent number: 4205716
    Abstract: Continuous casting process for the production of hollow ingot using an improved direct chill casting equipment having a molding system comprising a hollow mold and a movable platform, wherein at least one core and a pipe for introducing outer air are provided, said core being made from a refractory material unwettable with a molten metal and having a convergent taper at the side and an air runner for introducing outer air, which is packed with an air-permeable material, at the bottom, and said pipe for introducing outer air extending upwards from the air runner and passing through the core.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: June 3, 1980
    Assignee: Sumitomo Aluminum Smelting Company, Ltd.
    Inventors: Kou Nakahira, Hideki Nakagami, Junichi Koshiba