Patents by Inventor James V. Freeman

James V. Freeman 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).

  • Control bracketing and results hold
    Publication number: 20040209375
    Abstract: An automated immunoassay analyzer, or assay system, provides for frequent testing of control samples to verify that before and after a series of tests of patients' samples, the operation of the test equipment is accurate, thereby ensuring that the results of the series of patient tests are accurate. Operating the immunoassay analyzer in this manner will delay reporting clinical test results until the results are confirmed as accurate. This operation can be performed automatically by a random access immunoassay analyzer.
    Type: Application
    Filed: April 5, 2004
    Publication date: October 21, 2004
    Applicant: BAYER HEALTHCARE
    Inventors: Kouakou Diby, Lawrence A. Baker, James V. Freeman, Judith Banta, Paula Mallon
  • Synthesis of 6.alpha.-functionalized estriol haptens and protein conjugates thereof
    Patent number: 5902888
    Abstract: Disclosed are 6.alpha.-derivatized estriol compounds which, when conjugated to a protein, are useful in the in vivo preparation of antibodies specific to estriol. When labeled with a detectable label, the estriol derivatives are useful as haptens in a competitive immunoassay for estriol which demonstrate superior sensitivity with respect to estriol specific antibodies.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: May 11, 1999
    Assignee: Bayer Corporation
    Inventors: James V. Freeman, Gary M. Johnson
  • Compositions and methods for determining the presence of amphetamines in a sample suspected of containing amphetamine and/or methamphetamine
    Patent number: 5328828
    Abstract: The instant invention is directed toward an immunoassay which can determine the presence of amphetamines in a sample suspected of containing amphetamine and/or methamphetamine by employing at least two conjugates, each comprised of a functionally similar label bound to an amphetamine analog and a methamphetamine analog respectively and an antibody to amphetamine and an antibody to methamphetamine wherein at least one of the antibodies is a monoclonal antibody.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: July 12, 1994
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Mae W. Hu, Cheng-I Lin, Chen-jung Hsu, James V. Freeman, Marcel Pirio, Edwin F. Ullman
  • Compositions and methods for determining the presence of amphetamines in a sample suspected of containing amphetamine and/or methamphetamine
    Patent number: 5135863
    Abstract: The instant invention is directed toward an immunoassay which can determine the presence of amphetamines in a sample suspected of containing amphetamine and/or methamphetamine by employing at least two conjugates, each comprised of a functionally similar label bound to an amphetamine analog and a methamphetamine analog respectively and an antibody to amphetamine and an antibody to methamphetamine wherein at least one of the antibodies is a monoclonal antibody.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: August 4, 1992
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Mae Wan Leng Hu, Cheng-I Lin, Chen-jung Hsu, James V. Freeman, Marcel Pirio, Edwin F. Ullman