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Yoshihiko Koga

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  • Minoo, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Analgetic composition
    • Patent number 4,083,981
    • Issue date Apr 11, 1978
    • Sumitomo Chemical Company, Limited
    • Hisao Yamamoto
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Analgetic composition
    • Patent number 4,029,798
    • Issue date Jun 14, 1977
    • Sumitomo Chemical Company, Limited
    • Hisao Yamamoto
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE