Patents by Inventor Lewis W. Hall, Jr.

Lewis W. Hall, Jr. 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).

  • Decolorization of norbornadiene dimers
    Patent number: 4229612
    Abstract: The removal of color bodies from an olefinic or saturated endo-endo hexacyclic homodimer of norbornadiene or mixtures thereof is accomplished by the use of a serpentine clay. Also acid bentonite clay or a montmorillonite clay can be used to remove the color bodies from the saturated dimer. The saturated dimer has a high density and a high heat of combustion making it useful as a missile fuel. Removal of the color bodies avoids possible catalyst poisoning in the hydrogenation of the olefinic to the saturated dimer. Also removal of the color bodies from the saturated dimer eliminates the possible problem of a material precipitating out on engine turbine blades and causing maintenance or operational problems.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 21, 1980
    Assignee: Suntech, Inc.
    Inventors: Lewis W. Hall, Jr., David L. Kerr, Elmer J. Hollstein, Harry K. Myers, Jr., Abraham Schneider
  • Isomerization of the hydrogenated norbornadiene endo-endo hexacyclic dimer
    Patent number: 4225735
    Abstract: Isomerization of a liquid, saturated endo-endo norbornadiene hexacyclic dimer involves the use of a catalytic amount of acidic alumina or a montmorillonite. The resulting isomeric product is solid, at ambient temperature, and can be used as a missile fuel.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: September 30, 1980
    Assignee: Suntech, Inc.
    Inventors: Lewis W. Hall, Jr., John D. Tice, Harry K. Myers, Jr., Abraham Schneider