Patents by Inventor Mitsuhiro Goi

Mitsuhiro Goi 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 preparing sorbic acid
    Patent number: 4158741
    Abstract: Process for preparing sorbic acid which comprises contacting .gamma.-vinyl-.gamma.-butyrolactone with at least one catalyst selected from the group consisting of (A) solid acids, (B) transition metal oxides, (C) metals of Group VIII of the Periodic Table and (D) halides of metals of Groups I-B, II-B, III-B, IV-B, V-B, VI-B and VIII of the Periodic Table.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: June 19, 1979
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Mitsuhiro Goi, Masahiko Miyashita, Tokio Hashimoto
  • Preparation of succinylsuccinic acid diesters
    Patent number: 4056551
    Abstract: Process for preparing succinylsuccinic acid diesters by subjecting .gamma.-haloacetoacetic acid esters to dimerization in the presence of a base in a mixed medium of alcohol and water containing a specific amount of a water-immiscible organic compound. The succinylsuccinic acid diesters with good quality can be prepared in high yields and can be employed effectively as intermediates for quinacridone pigment.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: November 1, 1977
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Mitsuhiro Goi, Masahiko Miyashita