Patents by Inventor Meliss A. Powell

Meliss A. Powell 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).

  • Cooled pumping system
    Patent number: 5142875
    Abstract: A method and apparatus for accurately regulating the compressibility of a compressible fluid in a pumping system utilizing a single zone of controlled cooling. Cryogenic cooling is employed for cooling a pump head and a thermally integrated heat exchanger such that a single source of cryogenic fluid can be applied to the heat exchanger to increase the bulk modulus of the compressible fluid just prior to and during the pumping process.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: September 1, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Michael S. James, Meliss A. Powell, Mark A. Nickerson, Louis T. Staats, III