Patents by Inventor Daya C. Wijesuriya

Daya C. Wijesuriya 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).

  • Patent number: 7108993
    Abstract: A method and device for carrying out immunoassays in which non analyte specific binding of heterophilic antibodies to a labeled antibody in a capture region produces an incorrect measure of the amount of an analyte attached to the antibody. Immunoglobulin from the same animal source as the labeled antibody is added to the sample fluid to prevent non-specific binding of the heterophilic antibodies in the capture region. One part of specific binding pair is added to said antibody or its label capable of binding to a second part of the binding pair immobilized in a control region downstream of said capture region for trapping the portion of the labeled anti-body which is not bound to the analyte. Preferably said binding pair is biotin/avidin or fluoroscein/anti-fluoroscein.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: September 19, 2006
    Assignee: Bayer Healthcare LLC
    Inventors: Ronald Sommer, Lloyd Schulman, Daya C. Wijesuriya
  • Publication number: 20040014157
    Abstract: A method and device for carrying out immunoassays in which non analyte specific binding of heterophilic antibodies to a labeled antibody in a capture region produces an incorrect measure of the amount of an analyte attached to the antibody. Immunoglobulin from the same animal source as the labeled antibody is added to the sample fluid to prevent non-specific binding of the heterophilic antibodies in the capture region. One part of specific binding pair is added to said antibody or its label capable of binding to a second part of the binding pair immobilized in a control region downstream of said capture region for trapping the portion of the labeled anti-body which is not bound to the analyte. Preferably said binding pair is biotin/avidin or fluoroscein/anti-fluoroscein.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 22, 2004
    Inventors: Ronald Sommer, Lloyd Schulman, Daya C. Wijesuriya