Patents by Inventor Hisako Yuasa

Hisako Yuasa 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).

  • Process for preparing Estracyt compounds having a carcinostatic bound thereto
    Patent number: 4584136
    Abstract: An Estracyt compound having a carcinostatic bound thereto is obtained by reacting an Estracyt compound with a carcinostatic having one or more radicals selected from among COOH, Cl, NH.sub.2 and OH, either directly or after reaction with an amine to replace one or both Cl groups in the nitrogen mustard portion in the Estracyt compound with a NH.sub.2 group, in the presence or absence of a catalyst. The resulting compound is more effective in cancer control than the Estracyt compound associated substance.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: April 22, 1986
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Masaru Yoshida, Masaharu Asano, Isao Kaetsu, Hidetoshi Yamanaka, Katsuyuki Nakai, Hisako Yuasa, Keizo Shida