Patents by Inventor William F. Haddon

William F. Haddon 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).

  • Mass spectrometry assay for thiopurine-S-methyl transferase activity and products generated thereby
    Patent number: 8497471
    Abstract: Methods are described for measuring the amount of a methylation TPMT enzyme product in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying 6-MMP or isotopically labeled 6-MMP in a test sample utilizing mass spectrometric techniques and for using such methods to determine the activity of TPMT enzyme that is present in a sample.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: July 30, 2013
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: William F. Haddon, Nigel J. Clarke
  • MASS SPECTROMETRY ASSAY FOR THIOPURINE-S-METHYL TRANSFERASE ACTIVITY AND PRODUCTS GENERATED THEREBY
    Publication number: 20120003676
    Abstract: Methods are described for measuring the amount of a methylation TPMT enzyme product in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying 6-MMP or isotopically labeled 6-MMP in a test sample utilizing mass spectrometric techniques and for using such methods to determine the activity of TPMT enzyme that is present in a sample.
    Type: Application
    Filed: September 14, 2011
    Publication date: January 5, 2012
    Inventors: William F. Haddon, Nigel J. Clarke
  • Mass spectrometry assay for thiopurine-S-methyl transferase activity and products generated thereby
    Patent number: 8039794
    Abstract: Methods are described for measuring the amount of a methylation TPMT enzyme product in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying 6-MMP or isotopically labeled 6-MMP in a test sample utilizing mass spectrometric techniques and for using such methods to determine the activity of TPMT enzyme that is present in a sample.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 18, 2011
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: William F. Haddon, Nigel J. Clarke
  • MASS SPECTROMETRY ASSAY FOR THIOPURINE-S-METHYL TRANSFERASE ACTIVITY AND PRODUCTS GENERATED THEREBY
    Publication number: 20100148054
    Abstract: Methods are described for measuring the amount of a methylation TPMT enzyme product in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying 6-MMP or isotopically labeled 6-MMP in a test sample utilizing mass spectrometric techniques and for using such methods to determine the activity of TPMT enzyme that is present in a sample.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Inventors: William F. Haddon, Nigel J. Clarke
  • Sec-butyl (Z)-7-tetradecenoate and its use as a sex attractant for the grapeleaf skeletonizer
    Patent number: 4563348
    Abstract: A pheromonal compound produced by the western grapeleaf skeletonizer has been identified as sec-butyl (Z)-7-tetradecenoate. The synthetically-prepared compound demonstrates activity toward both the western grapeleaf skeletonizer, Harrisina brillians Barnes and McDunnough and the grapeleaf skeletonizer, Harrisina americana (Guerin). By attracting adult moths to field traps, this compound offers a useful tool in monitoring and control of this pest.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: January 7, 1986
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Edwin L. Soderstrom, William F. Haddon, Joel Myerson