Patents by Inventor Hajima Yoshikoshi

Hajima Yoshikoshi 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).

  • Patent number: 5262531
    Abstract: 2'-deoxy-.beta.-adenosine can be industrially and easily obtained without using expensive or dangerous materials by the process of the present invention, which comprises the steps of: preparing a salt of adenine from adenine, allowing to condense the salt with a derivative of pentofuranose to isolate a derivative of adenine, and then eliminating the protecting groups.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: November 16, 1993
    Assignees: Japan Tobacco, Inc., Yuki Gosei Kogyo, Co. Ltd.
    Inventors: Hiroshi Kawakami, Hajime Matsushita, Hajima Yoshikoshi, Kazuo Itoh, Yoshitake Naoi