Patents by Inventor Hanako Yoshizawa

Hanako Yoshizawa 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).

  • Attenuated smallpox vaccine strain
    Patent number: 4567147
    Abstract: The present invention discloses an attenuated smallpox vaccine strain exhibiting antibody production similar to conventional strains but without postvaccinal side effects. The vaccine is prepared by attenuating a Lister strain of a vaccinia virus by cell culture and selecting a suitable strain therefrom showing relatively small and uniform pocks on the chorioallantoic membrane of an embryonated egg.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: January 28, 1986
    Assignee: Chiba Prefectural Government
    Inventors: Kiyoshi Ooi, Michio Morita, Kazuyoshi Suzuki, Soh Hashizume, Hanako Yoshizawa