Patents by Inventor Etsuro Yoshikawa

Etsuro Yoshikawa 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).

  • Antiviral agent
    Patent number: 4784853
    Abstract: An antiviral agent containing as its active ingredient, an ingredient extracted from Crocosmia x crocosmaeflora N.E. Br.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: November 15, 1988
    Assignee: Chisso Corporation
    Inventors: Takeshi Inoi, Hiroaki Ishibashi, Etsuro Yoshikawa