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Takashi Kojima

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Patents Grantslast 30 patents

  • Information Patent Grant

    Low viscous p-phenylene diamine stabilizers
    • Patent number 4,360,621
    • Issue date Nov 23, 1982
    • Sumitomo Chemical Company, Limited
    • Osamu Kimura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Manufacture of polymerized 2,2,4-trimethyl-1,2-dihydroquinoline
    • Patent number 4,326,062
    • Issue date Apr 20, 1982
    • Sumitomo Chemical Company, Ltd.
    • Takashi Kojima
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Antidegradants for rubber
    • Patent number 4,158,000
    • Issue date Jun 12, 1979
    • Sumitomo Chemical Company, Limited
    • Hideo Nagasaki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...