Patents by Inventor John Trifone Martin

John Trifone Martin 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).

  • Liquid sample carbon analyzer
    Patent number: 6007777
    Abstract: An analytical instrument measures carbon content of a liquid sample. The instrument includes a sample inlet, a reagent inlet, a rinsing solution inlet, a reaction chamber, a waste outlet and a syringe pump. A multiple port valve has a plurality of ports which are coupled to the sample inlet, the reagent inlet, the rinse solution inlet, the reaction chamber and the waste outlet. The valve also includes a primary port coupled to the syringe pump and selectively fluidically couplable to each of the remaining ports.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: December 28, 1999
    Assignee: Tekmar Company
    Inventors: Michael W. Purcell, Sheng Sheng Yang, John Trifone Martin, Richard R. Reckner, Jeffrey L. Harris