Patents by Inventor Stephen Tirell

Stephen Tirell 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).

  • Buffers for stabilizing antigens
    Publication number: 20030170618
    Abstract: The present invention is directed to an antigen diluent or buffer for antigens, in particular HCV recombinant antigens, comprising a reducing agent. The antigen diluent or buffer serves as a stabilizing buffer for the antigens. The present invention is also directed to antigen diluents or buffers for use in an automated immunoassay.
    Type: Application
    Filed: January 28, 2003
    Publication date: September 11, 2003
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler
  • Buffers for stabilizing antigens
    Patent number: 6537745
    Abstract: The present invention is directed to an antigen diluent or buffer for antigens, in particular HCV recombinant antigens, comprising a reducing agent. The antigen diluent or buffer serves as a stabilizing buffer for the antigens. The present invention is also directed to antigen diluents or buffers for use in an automated immunoassay.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: March 25, 2003
    Assignee: Chiron Corporation
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler
  • Method for detecting antibodies in a sample
    Patent number: 6391540
    Abstract: The present invention is directed to assays for detecting antibodies in a sample in a single incubation step. The assays employ universal solid phases and/or universal detectable markers, and facilitate the detection and differentiation of antigens from the same source or from different sources in a single test sample. The present invention includes test kits for performing the methods according to the invention.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: May 21, 2002
    Assignee: Chiron Corporation
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler
  • Buffers for stabilizing antigens
    Publication number: 20010039009
    Abstract: The present invention is directed to an antigen diluent or buffer for antigens, in particular HCV recombinant antigens, comprising a reducing agent. The antigen diluent or buffer serves as a stabilizing buffer for the antigens. The present invention is also directed to antigen diluents or buffers for use in an automated immunoassay.
    Type: Application
    Filed: February 2, 2001
    Publication date: November 8, 2001
    Applicant: Chiron Corporation
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler
  • Buffers for stabilizing antigens
    Patent number: 6261764
    Abstract: The present invention is directed to an antigen diluent or buffer for antigens, in particular HCV recombinant antigens, comprising a reducing agent. The antigen diluent or buffer serves as a stabilizing buffer for the antigens. The present invention is also directed to antigen diluents or buffers for use in an automated immunoassay.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: July 17, 2001
    Assignee: Chiron Corporation
    Inventors: David Y. Chien, Phillip Arcangel, Stephen Tirell, Wanda Zeigler