Patents by Inventor Kunikazu Totsugawa

Kunikazu Totsugawa 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).

  • Antibiotics SF-2050 and SF-2050B substances and production and use thereof
    Patent number: 4220639
    Abstract: New antibiotics, SF-2050 substance and SF-2050B substance are produced by cultivating a microorganism Streptomyces sp. SF-2050 now deposited under FERM-P 4358 and under ATCC. 31450 in a liquid culture medium under aerobic conditions, and these antibiotics may be isolated from the fermentation broth and useful as an antibacterial agent. These antibiotics have an activity inhibitory to .beta.-lactamase.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: September 2, 1980
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Kazunori Ohba, Chuhei Nojiri, Yasuaki Ogawa, Jiro Itoh, Kunikazu Totsugawa, Norio Ezaki, Takashi Shomura, Tomizo Niwa, Shigeharu Inouye, Yujiro Yamada