Patents by Inventor Marion K. Freeman

Marion K. Freeman 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).

  • Persistent fire suppressant composition
    Patent number: 4226727
    Abstract: A substantially nonaqueous persistent thixotropic fire suppressant composition comprises a fire suppressant agent, a carrier material, the suppressant agent permeating the carrier material to form a suppressant permeated carrier material, a fire extinguishing dispersant, the carrier material being insoluble in the dispersant, the permeated carrier material being suspended in the dispersant, and a gelling agent in an amount effective to thixotropically gel the suspension of permeated carrier material and dispersant, the permeated carrier material being capable of adhering to an object in the vicinity of combustion.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: October 7, 1980
    Assignee: Energy & Minerals Research Co.
    Inventors: William B. Tarpley, Jr., John R. Huzinec, Marion K. Freeman