Patents by Inventor Edward A. Grens, II

Edward A. Grens, II 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).

  • Coal liquefaction in an inorganic-organic medium
    Patent number: 4333815
    Abstract: Improved process for liquefaction of coal by contacting pulverized coal in an inorganic-organic medium solvent system containing a ZnCl.sub.2 catalyst, a polar solvent with the structure RX where X is one of the elements O, N, S or P, and R is hydrogen or a lower hydrocarbon radical; the solvent system can contain a hydrogen donor solvent (and must when RX is water) which is immiscible in the ZnCl.sub.2 and is a hydroaromatic hydrocarbon, selected from tetralin, dihydrophenanthrene, dihydroanthracene or a hydrogenated coal derived hydroaromatic hydrocarbon distillate fraction.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: June 8, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Theodore Vermeulen, Edward A. Grens, II, Ronald R. Holten