TREA

Toshifumi Tamura

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  • Shiga, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Plastic optical fiber resistant to heat and humidity
    • Patent number 4,779,954
    • Issue date Oct 25, 1988
    • Sumitomo Chemical Company, Limited
    • Yoshiharu Tatsukami
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Plastic optical fiber
    • Patent number 4,758,067
    • Issue date Jul 19, 1988
    • Sumitomo Chemical Co., Ltd.
    • Yoshiharu Tatsukami
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Highly dielectric polysaccharides
    • Patent number 4,438,262
    • Issue date Mar 20, 1984
    • Sumitomo Chemical Company, Limited
    • Ichiki Murase
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Production of hydrogels
    • Patent number 4,367,323
    • Issue date Jan 4, 1983
    • Sumitomo Chemical Company, Limited
    • Shuji Kitamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Method for preparing highly absorbent hydro-gel polymers
    • Patent number 4,320,040
    • Issue date Mar 16, 1982
    • Sumitomo Chemical Company, Limited
    • Fumio Fujita
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Preparing a hydrophilic gel by hydrolyzing a vinyl ester-acrylic or...
    • Patent number 4,155,893
    • Issue date May 22, 1979
    • Sumitomo Chemical Company, Limited
    • Masanori Fujimoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...