Patents by Inventor Katsushi Hagiwara

Katsushi Hagiwara 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).

  • Anti-virus agent
    Patent number: 5320849
    Abstract: An oral anti-virus agent containing a polysaccharide having the following chemical structure as an active component, ##STR1## (wherein n is an integer of at least 16).
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: June 14, 1994
    Assignee: Taito Co., Ltd.
    Inventors: Katsushi Hagiwara, Mikio Kikuchi