TREA

Youichi Umada

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zeolite fungicide
    • Patent number 4,986,989
    • Issue date Jan 22, 1991
    • Sumitomo Chemical Company, Limited
    • Masao Sirosita
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Grant

    Process for producing pyridine bases
    • Patent number 4,810,794
    • Issue date Mar 7, 1989
    • Koei Chemical Co., Ltd.
    • Shinkichi Shimizu
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Production of epsilon-caprolactam
    • Patent number 4,717,769
    • Issue date Jan 5, 1988
    • Sumitomo Chemical Co., Ltd.
    • Hiroshi Sato
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Production of epsilon-caprolactam
    • Patent number 4,709,024
    • Issue date Nov 24, 1987
    • Sumitomo Chemical Company
    • Hiroshi Sato
    • C07 - ORGANIC CHEMISTRY