Patents Assigned to Takeo Saegusa
  • Block copolymer
    Patent number: 4540747
    Abstract: Block copolymers of poly(N-formylethyleneimine) or poly(N-acetylethyleneimine) with poly(N-acylethyleneimine or poly(N-acylpropyleneimine) having a molecular weight of 500 to 50,000 and a method for their production. These block copolymers are useful as surface active agents.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: September 10, 1985
    Assignees: Sumitomo Chemical Company, Limited, Takeo Saegusa
    Inventors: Takeo Saegusa, Shiro Kobayashi, Yasuhiro Moriuchi