Patents by Inventor Kunio Unuma

Kunio Unuma 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 D-2-amino-2-(1,4-cyclohexadienyl)acetic acid
    Patent number: 4338461
    Abstract: A novel process for producing D-2-amino-2-(1,4-cyclohexadienyl)-acetic acid useful as an intermediate compound for producing 6-aminopenicillanic acid or 7-aminocephalosporanic acid is disclosed.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: July 6, 1982
    Assignee: Nippon Kasei Chemical Co., Ltd.
    Inventors: Kunio Unuma, Hiroyasu Saito, Jihei Inomata, Saburo Takizawa