Patents by Inventor Kyouichi Hirotsu

Kyouichi Hirotsu 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).

  • Antitumor composition for oral administration
    Patent number: 5665711
    Abstract: An antitumor composition for oral administration, comprising a 2'-deoxy-2'-methylidenecytidine compound of the formula ##STR1## wherein R is a hydrogen or a halogen, and R.sup.1 and R.sup.2 are the same or different and each is a hydrogen, a halogen or an alkyl having 1 to 4 carbon atoms, an acid addition salt thereof or a hydrate thereof, and a sucrose ester of fatty acid(s). The pharmaceutical composition of the present invention comprising a DMDC compound useful as an antitumor agent based on its remarkable degenerative action on solid tumor shows an improved oral absorption.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: September 9, 1997
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Atsushi Sakai, Kyouichi Hirotsu, Hirotsugu Tada, Toshiyuki Shibata