Patents by Inventor Philip R. Petersen

Philip R. Petersen 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).

  • Naphthenic acid corrosion inhibitors
    Patent number: 5182013
    Abstract: Naphthenic acid corrosion in refinery distillation units is inhibited by introducing into the units effective amounts of a polysulfide corrosion inhibitor.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: January 26, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Philip R. Petersen, Frederick P. Robbins, III, William G. Winston
  • Method of inhibiting corrosion using N-S containing compounds
    Patent number: 4938925
    Abstract: A method of inhibiting corrosion of metal equipment in wells comprises contacting the metal surfaces with an inhibiting amount of a corrosion inhibitor which is the reaction product of a compound containing a carbonyl group (e.g. aldehydes), an amine, and a thiocyanate.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: July 3, 1990
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Philip R. Petersen, Larry G. Coker, Daniel S. Sullivan, III