Patents by Inventor Tetsuro Watanabe

Tetsuro Watanabe 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).

  • Novel antibiotic substance SF-1540 and its derivative, and process for the production thereof
    Patent number: 4181715
    Abstract: A novel antibiotic substance SF-1540 and a process for preparing the same which comprises culturing a substance SF-1540-producing microorganism belonging to the genus Streptomyces in a medium and isolating and recovering the substance SF-1540 from a cultured broth; a novel derivative of the substance SF-1540 and a process for preparing the same which comprises treating said antibiotic substance SF-1540 with methanol to form the corresponding antibiotic substance SF-1540 derivative.
    Type: Grant
    Filed: May 24, 1978
    Date of Patent: January 1, 1980
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Yasumitsu Kondo, Takashi Shomura, Hiroshi Watanabe, Tetsuro Watanabe, Shigeharu Inouye, Taro Niida