Patents by Inventor Donald E. Mahan

Donald E. Mahan 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).

  • Patent number: 6902904
    Abstract: A method, kit, system and reagent for performing coagulation assays with higher sensitivity and greater dynamic range is provided which involves the use of one or more metal compounds that interact with calcium binding sites in the blood coagulation cascade, particularly lanthanide compounds, manganese compounds and magnesium compounds. A Protein C reagent, kit, and assay method is also provided using the same type of metal compounds to provide greater detection sensitivity and dynamic range between samples.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: June 7, 2005
    Assignee: Pharmanetics Incorporated
    Inventors: Gwyn A. Cutsforth, Donald E. Mahan
  • Publication number: 20030211551
    Abstract: A platelet function assay reagent is provided for performing a platelet function assay, wherein the reagent contains a mixture of magnetic and non-magnetic particles, wherein the magnetic particles have bound to an outer surface thereof an amount of a first ligand having an affinity for direct interaction with GP-Ib receptors on blood platelets and wherein the non-magnetic particles have bound to an outer surface thereof an amount of a second ligand having an affinity for direct interaction with GP-Ib receptors on blood platelets, such that interaction of either of the first or second ligands with the GP-Ib platelet receptor will activate the blood platelets toward aggregation, wherein the first ligand and the second ligand can be the same or different, and the assay using such reagent, for providing a fast, reliable point-of-care assessment of platelet function.
    Type: Application
    Filed: April 1, 2003
    Publication date: November 13, 2003
    Inventors: Donald E Mahan, Michael W Stewart
  • Patent number: 6586259
    Abstract: A platelet/leukocyte interaction assay method and reagent therefor are provided using the presence of a solid-phase stimulus, such as magnetic or non-magnetic particles or mixtures thereof, having bound to the surface thereof one or more ligands that interact directly with platelets, leukocytes or both, for providing a fast, reliable point-of-care assessment of platelet/leukocyte interaction.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: July 1, 2003
    Assignee: Pharmanetics Incorporated
    Inventors: Donald E. Mahan, Michael W. Stewart
  • Publication number: 20030044871
    Abstract: A method, kit, system and reagent for performing coagulation assays with higher sensitivity and greater dynamic range is provided which involves the use of one or more metal compounds that interact with calcium binding sites in the blood coagulation cascade, particularly lanthanide compounds, manganese compounds and magnesium compounds. A Protein C reagent, kit, and assay method is also provided using the same type of metal compounds to provide greater detection sensitivity and dynamic range between samples.
    Type: Application
    Filed: August 27, 2001
    Publication date: March 6, 2003
    Applicant: PHARMANETICS INCORPORATED
    Inventors: Gwyn A. Cutsforth, Donald E. Mahan
  • Patent number: 5374395
    Abstract: A dependable cost-effective clinical analyzer machine provides an efficient and easy-to-use diagnostics instrument and process to accurately, rapidly and automatically test and analyze samples in test packs for an analyte. In the clinical analyzer machine, remote-controlled trams transport test packs containing loading/unloading station to a processing/testing station via a carousel and vice versa. In the processing station, a special processor with mechanically-operated rollers mixing shoes, wastegate assembly, magnets, clamp plate and a thermal sealer, process samples in test packs with various reagents to detect an analyte. The carousel holds the test packs during incubation periods and rotates the tested disposable packs past an optical reader which optically senses the presence of an analyte in the sample. Bar code readers are provided to assist in identification of the test pack, patient and sample.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 20, 1994
    Assignee: Amoco Corporation
    Inventors: David Robinson, Ernest Bate, Simon Kellard, Mark Watson, Donald E. Mahan, Thomas M. Shimei, Kevin R. Kearney
  • Patent number: 4793395
    Abstract: A tire shock absorber for attachment to a pneumatic tube tire or pneumatic tubeless tire for improving the smoothness of ride and decreasing road vibrations, the tire shock absorber comprising a chamber having at least one valve means which permits the unrestricted flow of air from the tubeless tire or tube tire into the chamber when the tire is subjected to intermittent road pressure, the valve means permitting the return of the displaced air to the tubeless tire or tube tire subsequent to the tire being subjected to the intermittent pressure. The tire shock absorber is designed for positioning either exterior to the tire or interior to the tire depending upon whether or not it is a tube tire or a tubeless tire.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: December 27, 1988
    Inventor: Donald E. Mahan
  • Patent number: D354141
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: January 3, 1995
    Assignee: Amoco Corporation
    Inventors: Ernest Bate, Philip Missing, David Robinson, Donald E. Mahan, Kevin R. Kearney, Thomas M. Shimei
  • Patent number: D354220
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: January 10, 1995
    Assignee: Amoco Corporation
    Inventors: Donald E. Mahan, Kevin R. Kearney, Thomas M. Shimei, Ernest Bate, Philip Missing, David Robinson