Patents by Inventor Sumio Hara

Sumio Hara 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: 5585437
    Abstract: The present invention relates to a thermoplastic resin composition which comprises (C) 0.1 through 30 parts by weight of an adduct of alkylene oxide with a saponified copolymer of ethylene and vinyl ester of saturated carboxylic acid based on 100 parts by weight of a mixture of a crystalline thermoplastic resin (A) and a polyphenylene ether resin (B).In the resin composition, the crystalline thermoplastic resin (A) forms a continuous phase and the polyphenylene ether resin (B) forms a dispersed phase.The present invention provides a novel thermoplastic resin composition containing a polyphenylene ether resin, which has excellent flow properties, impact resistance and heat resistance.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadayuki Ohmae, Sumio Hara, Hiroomi Abe, Kenji Nagaoka
  • Patent number: 5430081
    Abstract: A flame retardant thermoplastic resin composition which comprises (A) 50 to 90% by weight of a thermoplastic resin which is the base polymer and 50 to 10% by weight of a total of (B) a nitrogen-containing condensed phosphoric acid compound, (C) a comb-like polymer consisting of a polyethylene main chain and a polyoxyalkylene side chain and (D) a metal-containing compound having a carbonization accelerating effect, the amounts of the components (B), (C) and (D) being 5 to 49% by weight, 1 to 15% by weight and 0 to 10% by weight, respectively, in which the total amount of the components (A), (B), (C) and (D) is 100% by weight; a process for producing the composition; a flame-retardant consisting of the components (B), (C) and (D); and a process for producing the flame-retardant.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: July 4, 1995
    Assignees: Sumitomo Chemical Company, Ltd., Marubishi Oil Chemical Co., Ltd.
    Inventors: Tadayuki Ohmae, Yoshikatsu Ogawa, Haruhiko Hisada, Masahide Yoshiya, Noboru Yamaguchi, Sumio Hara, Tohru Fujiki
  • Patent number: 5424150
    Abstract: A polymeric solid electrolyte comprising a high molecular compound and a salt wherein the high molecular compound is a product formed by graft-polymerizing an alkylene oxide to the saponification product of a copolymer of ethylene with a vinyl ester of an aliphatic carboxylic acid. The polymeric solid electrolyte has a high ionic conductivity of 10.sup.-5 S/cm or more even at a temperature of 30.degree. C., shows a low temperature dependency of ionic conductivity and thus can be used as the solid electrolyte of various electrochemical devices such as batteries.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: June 13, 1995
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Toshihiro Ohnishi, Shuji Doi, Sumio Hara
  • Patent number: 5385974
    Abstract: A novel graft copolymer having a number-average molecular weight of about 1,500 to about 1,000,000, produced by graft-copolymerizing an alkylene oxide and a cyclic ester to a saponified ethylene-saturated carboxylic acid vinyl ester copolymer; a process for production thereof; and a plasticizer comprising said graft copolymer as the active component.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: January 31, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadayuki Ohmae, Hisao Tanaka, Sumio Hara
  • Patent number: 5292803
    Abstract: There is disclosed a process for the production of polymeric polyols, which comprises the steps of:partially or completely saponifying a heterogeous two-phase mixture of (a) a heated molten liquid containing an ethylene-saturated carboxylic acid vinyl ester copolymer having a number average molecular weight of from 800 to 5000 and a saturated carboxylic acid vinyl ester content of from 1 to 50% by weight, and (b) an aliphatic alcohol, in the presence of an alkali catalyst, while removing a saturated carboxylic acid alkyl ester byproduct from the reaction system;then removing the residual aliphatic alcohol from the reaction system; andsupplying an alkylene oxide to effect an alkylene oxide-addition reaction, optionally after further supplying the alkali catalyst.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: March 8, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadayuki Ohmae, Hisao Tanaka, Sumio Hara, Kenzo Chikanari
  • Patent number: 5214091
    Abstract: Disclosed in this invention is a thermoplastic resin composition comprising a thermoplastic resin, a conductive inorganic filler and/or a non-conductive inorganic filler, and an adduct of an ethylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a saturated carboxylic acid. The adduct of an alkylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a carboxylic acid is an additive having excellent compatibility with the thermoplastic resin and useful for improving dispersibility of the inorganic filler.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: May 25, 1993
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hisao Tanaka, Sumio Hara
  • 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: 4404000
    Abstract: A middle and/or heavy distillate composition having a good flow property and filterability, comprising a fuel oil of varying proportions of middle and/or heavy distillate of petroleum and 10-2000 ppm, based on the fuel oil, of a mixture of 1-99% by weight of (A) a copolymer of ethylene with an alkoxyalkyl acrylate or methacrylate represented by the formula, ##STR1## wherein R.sub.1 represents hydrogen or C.sub.1 -C.sub.2 alkyl and R.sub.2 is C.sub.m H.sub.2m --O--C.sub.n H.sub.2n+1, m and n each being an integer of 1-4, and 99-1% by weight of (B) a copolymer of ethylene with a vinyl ester of saturated carboxylic acid and/or an alkyl ester of ethylenic unsaturated carboxylic acid.
    Type: Grant
    Filed: August 26, 1982
    Date of Patent: September 13, 1983
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiki Toyoshima, Sumio Hara, Masaki Nakazyo
  • Patent number: 3966821
    Abstract: A process for preparing 1-tetrahydronaphthalone which comprises oxidizing tetrahydronaphthalene by a liquid phase oxidation with molecular oxygen or a molecular oxygen-containing gas in the presence of a catalyst system comprising a chromium salt of naphthenic acid and an alkyl-substituted pyridine compound.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: June 29, 1976
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Ken-Ichi Kudo, Tadayuki Ohmae, Yoshiki Toyoshima, Sumio Hara