Patents by Inventor Rie Hakamada

Rie Hakamada 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).

  • Pyrrolidine derivatives as nootropic agents
    Patent number: 5110823
    Abstract: Pyrrolidine derivatives of formula (I) are disclosed. ##STR1## wherein the ring A represents the following heterocyclic ring ##STR2## The compounds of formula (I) are useful as nootropic agents.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: May 5, 1992
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Fumiko Hamaguchi, Tatsuo Nagasaka, Rie Hakamada, Einosuke Sakurai