Patents by Inventor Tatsuji Enoki

Tatsuji Enoki 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).

  • 2,3,4-trihydroxycyclopentanone
    Patent number: 6166091
    Abstract: 2,3,4-trihydroxycyclopentanone represented by the following formula [I], its optically active substance or salt thereof.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: December 26, 2000
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Kaoru Kojima, Katsushige Ikai, Tatsuji Enoki, Nobuto Koyama, Ikunoshin Kato
  • Cyclopentenones, process for preparing the same, and the use thereof
    Patent number: 6087401
    Abstract: There is disclosed a method of manufacturing 4,5-dihydroxy-2-cyclopenten-1-one represented by the following formula [1] which is characterized in that at least one substance selected from the following (a), (b) and (c) is heated.(a): uronic acid or uronic acid derivative(s);(b): a saccharide compound which contains uronic acid and/or uronic acid derivative(s); and(c): a substance containing a saccharide compound which contains uronic acid and/or uronic acid derivative(s).
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: July 11, 2000
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Nobuto Koyama, Hiroaki Sagawa, Eiji Kobayashi, Tatsuji Enoki, Hua-Kang Wu, Eiji Nishiyama, Katsushige Ikai, Ikunoshin Kato