Patents by Inventor Catherine J. Hurt

Catherine J. Hurt 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).

  • Liquid reagent set for L-lactate determination
    Patent number: 6030802
    Abstract: The invention provides sets of liquid reagents that afford calibration stability in an enzyme based spectrophotometric assay for the measurement of lactate in patient samples. The reagent sets include a lactate oxidase, a peroxidase, a hydrogen donor, an agent that substantially prevents ascorbic acid interference, and agent that substantially prevents bilirubin interference, a coupling agent, a buffer and, optionally, a preservative. The invention further provides methods for using the liquid reagent sets.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 29, 2000
    Assignee: Roche Diagnostics Corporation
    Inventors: Allan R. Dorn, Catherine J. Hurt, Larry D. Mountain
  • Stable aqueous reagent containing NAD
    Patent number: 5804403
    Abstract: A stable aqueous NAD reagent useful in the measurement of analytes in biological fluids, particularly ethanol and lactate. For the determination of alcohol, the reagent contains alcohol dehydrogenase, pyrazole, NAD, SUTTOCIDE A and an aliphatic, zwitterionic buffer having a secondary or tertiary amine group. Preferred buffers are TAPSO, AMPSO, POPSO, TAPS and DIPSO. For the determination of lactate, the reagent contains lactate dehydrogenase, pyrazole, NAD, SUTTOCIDE A and an aliphatic, zwitterionic buffer having a secondary or tertiary amine group.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 8, 1998
    Assignee: Boehringer Mannheim Corporation
    Inventors: Allen R. Dorn, Catherine J. Hurt, Edward O. Ganser