Patents by Inventor Richard A. Clausius

Richard A. Clausius 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).

  • Process for purifying graphite
    Patent number: 4496533
    Abstract: A process for purifying graphite comprising:(1) comminuting graphite containing mineral matter to liberate at least a portion of the graphite particles from the mineral matter;(2) mixing the comminuted graphite particles containing mineral matter with water and hydrocarbon oil to form a fluid slurry;(3) separating a water phase containing mineral matter and a hydrocarbon oil phase containing graphite particles; and(4) separating the graphite particles from the hydrocarbon oil to obtain graphite particles reduced in mineral matter.Depending upon the purity of the graphite desired, steps of the process can be repeated one or more times to provide a progressively purer graphite.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: January 29, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Richard A. Clausius