Patents by Inventor Koichiro Udea

Koichiro Udea 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).

  • Cyanoguanidine derivatives
    Patent number: 4287346
    Abstract: Novel cyanoguanidine derivatives, and acid addition salts thereof useful as medicines which have pharmacological actions such as anti-secretory effect, local anesthesia action and the like; and process for the preparation thereof.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: September 1, 1981
    Assignee: Eisai Co., Ltd.
    Inventors: Satoru Tanaka, Katsutoshi Shimada, Kazunori Hashimoto, Kiichi Ema, Koichiro Udea