Patents by Inventor Marion Cates

Marion Cates 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).

  • Continuous air monitoring apparatus and method
    Patent number: 5014541
    Abstract: A continuous air monitoring apparatus utilizes a solid sorbent preconcentrator to concentrate airborne sorbent compounds for gas chromatographic analysis. Direct connection between the preconcentrator and gas chromatographic column allows direct desorption of the compounds into the column with minimal dead space. Temperature control on the column allows sharp chromatographic peaks to be attained without cryogenic focussing.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 14, 1991
    Assignee: CMS Research Corporation
    Inventors: Gary D. Sides, Marion Cates