Patents by Inventor Yuichi Kumahara

Yuichi Kumahara 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).

  • Radioimmunoassay method for determining calcitonin and radioactive tracer for use therein
    Patent number: 4277393
    Abstract: A hentriacontapeptide of the formula (I) ##STR1## a radioactive labeled hentriacontapeptide of the formula (I), useful in a radioimmunoassay method and a radioimmunoassay method for determining calcitonin.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: July 7, 1981
    Assignee: Daiichi Radioisotope Laboratories, Ltd.
    Inventors: Shumpei Sakakibara, Yuichi Kumahara, Yoshiaki Okada, Hiroshi Ogawa, Nobuhiko Nakazawa, Shoichiro Tsushima