Patents by Inventor Pamela L. H. Hawkins

Pamela L. H. Hawkins 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).

  • Extraction methods for preparing thromboplastin reagents
    Patent number: 5504193
    Abstract: The Prothrombin Time (PT) is used as a screening test for blood coagulation factor deficiencies and for monitoring oral anti-coagulant therapy using coumadin. Thromboplastin reagents activate the extrinsic pathway of coagulation and are the basis for the Prothrombin Time (PT) test. This invention describes the use of barium sulfate and chaotropic agents, and nonionic detergents, for the extraction of sensitive thromboplastin reagents from tissue. Extraction with sodium thiocyanate alone also greatly enhances thromboplastin sensitivity. This invention should be useful for all thromboplastins and will improve their sensitivity for all PT-based tests and specific assays.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: April 2, 1996
    Inventors: Pamela L. H. Hawkins, James R. Maynard
  • Extraction methods for preparing thromboplastin reagents
    Patent number: 5426031
    Abstract: The Prothrombin Time (PT) is used as a screening test for blood coagulation factor deficiencies and for monitoring oral anti-coagulant therapy using coumadin. Thromboplastin reagents activate the extrinsic pathway of coagulation and are the basis for the Prothrombin Time (PT) test. This invention describes the use of barium sulfate and chaotropic agents, and nonionic detergents, for the extraction of sensitive thromboplastin reagents from tissue. Extraction with sodium thiocyanate alone also greatly enhances thromboplastin sensitivity. This invention should be useful for all thromboplastins and will improve their sensitivity for all PT-based tests and specific assays.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: June 20, 1995
    Assignee: Baxter Diagnostics Inc.
    Inventors: Pamela L. H. Hawkins, James R. Maynard
  • Extraction method for preparing thromboplastin reagents
    Patent number: 5270451
    Abstract: The Prothrombin Time (PT) is used as a screening test for blood coagulation factor deficiencies and for monitoring oral anti-coagulant therapy using coumadin. Thromboplastin reagents activate the extrinsic pathway of coagulation and are the basis for the Prothrombin Time (PT) test. This invention describes the use of barium sulfate and chaotropic agents, and nonionic detergents, for the extraction of sensitive thromboplastin reagents from tissue. Extraction with sodium thiocyanate alone also greatly enhances thromboplastin sensitivity. This invention should be useful for all thromboplastins and will improve their sensitivity for all PT-based tests and specific assays.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: December 14, 1993
    Assignee: Baxter Diagnostics Inc.
    Inventors: Pamela L. H. Hawkins, James R. Maynard