Patents by Inventor Koichi Narasaka

Koichi Narasaka 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).

  • Cyclobutane derivatives
    Patent number: 5250697
    Abstract: Cyclobutane derivatives represented by the following general formula (I): ##STR1## wherein X represents a group represented by the formula ##STR2## or the formula ##STR3## which is expected to be useful as reagents, drugs, agricultural chemicals and perfumes as well as an intermediate for the preparation thereof.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: October 5, 1993
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichi Narasaka, Yujiro Hayashi