TREA

Michihisa Isobe

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Patents Grantslast 30 patents

  • Information Patent Grant

    Polymer electrolyte and process for producing the same
    • Patent number 6,087,031
    • Issue date Jul 11, 2000
    • Sumitomo Chemical Company, Limited
    • Katsuhiko Iwasaki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Optical device
    • Patent number 5,135,791
    • Issue date Aug 4, 1992
    • Sumitomo Chemical Company, Limited
    • Shozaburo Imai
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Optical resin material having improved birefringence
    • Patent number 4,785,053
    • Issue date Nov 15, 1988
    • Sumitomo Chemical Company, Limited
    • Iko Ito
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing polyphenylene oxide
    • Patent number 4,385,168
    • Issue date May 24, 1983
    • Sumitomo Chemical Company, Limited
    • Katsuji Ueno
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...