Shohei Umezawa

Person

  • Tokyo, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Compound and surfactant

    • Patent number 5,929,290
    • Issue date Jul 27, 1999
    • Asahi Denka Kogyo K.K.
    • Kaoru Komiya
    • C07 - ORGANIC CHEMISTRY