Patents by Inventor Takashi Okonogi

Takashi Okonogi 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).

  • Method for the inactivation of microbial toxins and attenuation of vaccines
    Patent number: 4172126
    Abstract: A method for the inactivation of microbial toxins and attenuation of vaccines by treating the toxin or vaccine with a tannin, especially a condensed tannin derived from fruit of the genus Diospyros, particularly the persimmon, without loss of the desired antigenicity.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: October 23, 1979
    Assignee: Sankyo Company Limited
    Inventors: Takashi Okonogi, Zenpachiro Hattori, Akira Ogiso, Seiji Mitsui