Patents by Inventor Stephen R. Springston

Stephen R. Springston 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).

  • Quantitative determination of atmospheric hydroperoxyl radical
    Patent number: 7285243
    Abstract: A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensity from the liquid phase atmospheric sample; and (c) comparing said luminescence intensity from the liquid phase atmospheric sample to a standard luminescence intensity for hydroperoxyl radical. An apparatus for automating the method is also included.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: October 23, 2007
    Assignee: Brookhaven Science Associates, LLC
    Inventors: Stephen R. Springston, Judith Lloyd, Jun Zheng
  • Method for making a non-extractable stationary phase of polymer within a capillary column
    Patent number: 4966785
    Abstract: A method for coating interior capillary column surfaces, or packing material of a packed column, used for gas chromatography, with a stationary polymer phase that is cross-linked by exposing it to a low-temperature plasma that is uniformly distributed over the column or packing material for a predetermined period of time to effect the desired degree of cross-linking of the coating.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: October 30, 1990
    Assignee: Associated Universities, Inc.
    Inventor: Stephen R. Springston
  • Open-tubular supercritical fluid chromatography
    Patent number: 4479380
    Abstract: Apparatus for and method of open-tube supercritical fluid chromatography.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: October 30, 1984
    Assignee: Brigham Young University
    Inventors: Milos Novotny, Milton L. Lee, Paul A. Peaden, John C. Fjeldsted, Stephen R. Springston