Patents Represented by Attorney M. H. Bromels

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  • Valve with perfluoroelastomer packing
    Patent number: 5549276
    Abstract: Valves having a stem packing of alternating layers of perfluoroelastomer and high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: August 27, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gary M. Pittman, Kenneth A. Senior, John N. Strunk, Krishnan R. Thondukolam