Patents by Inventor Tamio Morikawa

Tamio Morikawa 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).

  • Nitrosourea derivative and process for preparing same
    Patent number: 4472573
    Abstract: A nitrosourea compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl and R.sup.2 is lower alkyl or lower alkoxy-lower alkyl, which may be prepared by nitrosation of a compound of the formula: ##STR2## wherein R.sup.1 and R.sup.2 are the same as defined above. Said nitrosourea compound is useful as an anti-tumor or anti-leukemic agent.
    Type: Grant
    Filed: March 16, 1982
    Date of Patent: September 18, 1984
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Tamio Morikawa, Kenji Tsujihara, Mikio Takeda, Yoshihisa Arai