Patents by Inventor Etsuko Ogawa

Etsuko Ogawa 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).

  • Freeze-dried composition containing enzyme-labeled anti-human interferon-.beta. antibody and enzyme immunoassay kit containing the composition
    Patent number: 5262296
    Abstract: The present invention relates to the stabilization of enzyme-labeled anti-human interferon-.beta. antibody for use in an enzyme immunoassay of human interferon-.beta. and provides a freeze-dried composition containing an anti-human interferon-.beta. antibody which has been freeze-dried in the presence of trehalose as a nonreducing disaccharide. The freeze-dried composition according to the present invention whose reduction in enzymatic activity remains minimized even when stored for a long period of time is conveniently incorporated into an EIA kit. No conventional non-volatile buffer solution such as a phosphate buffer solution is added to the original freeze-dried liquid of the present invention.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: November 16, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Etsuko Ogawa, Shojiro Yamazaki