Patents by Inventor Katsumi Nishikawa

Katsumi Nishikawa 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).

  • Method of assaying kallikrein formation substances
    Patent number: 4985354
    Abstract: A method of assaying a physiologically active substance, which comprises activating blood coagulation factor XII in plasma in the presence of said physiologically active substance being tested to convert prekallikrein in the plasma into kallikrein, and measuring the activity of kallikrein thus formed.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: January 15, 1991
    Assignee: Nippon Zoki Pharmaceutical Co., Ltd.
    Inventors: Yoshio Toyomaki, Katsumi Nishikawa, Hitoshi Kawakubo