Patents by Inventor Tetsu Osozawa

Tetsu Osozawa 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 preparing androstane steroids
    Patent number: 4397946
    Abstract: Androstane steroids are produced by microbiological conversion of a sterol substrate with a microorganism belonging to the genus Mycobacterium wherein the medium used contains at least 0.1% by weight of egg yoke as a dry weight.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: August 9, 1983
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Yukio Imada, Tetsu Osozawa, Yuki Morimoto, Masayuki Kinoshita