Patents by Inventor Duel L. Seymore

Duel L. Seymore 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).

  • Thin layer chromatography direct sample application manifold
    Patent number: 5320811
    Abstract: An apparatus and method for directly applying a liquid sample matrix containing analytes and possible endogenous compounds to selected areas of a thin layer chromatographic sheet. The apparatus comprises a manifold made from an upper and lower filter block which are fastened together and supported on a support member. The thin layer chromatographic sheet is held between the upper and lower filter block. Samples are applied to the thin layer chromatographic sheet through aligned through-bores in the upper and lower filter block by connecting a syringe to the through-bores of the upper filter block. The method involves initially wetting areas of the thin layer chromatographic sheet where the sample is subsequently applied. Analytes retained on the thin layer chromatographic sheet are subsequently analyzed and may be further extracted from the thin layer chromatographic sheet for analysis.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: June 14, 1994
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Dwight L. Mount, Douglas W. Kirby, Duel L. Seymore