Patents by Inventor Hachiro Yamaguchi

Hachiro Yamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing cysteamines and/or cystamines
    Patent number: 4212826
    Abstract: Specific cysteamines and/or cystamines are produced by a process which comprises causing (A) an aminoalkyl sulfate ester and (B) hydrogen sulfide and an alkali polysulfide formed from an alkali hydrogen sulfide and sulfur to react.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: July 15, 1980
    Assignee: Wakunaga Yakuhin Kabushiki Kaisha
    Inventor: Hachiro Yamaguchi
  • Grouting materials for consolidation of soils
    Patent number: 4208216
    Abstract: A composition including a silicate, imidodisulfonic acids and/or the salts thereof is disclosed. This composition is useful as grouting agent.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: June 17, 1980
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hachiro Yamaguchi, Tatsuhiko Noguchi, Kiichi Endo