Patents by Inventor Rhea A. Howard

Rhea A. Howard 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).

  • Use of nonradioactive complex metal anion as tracer in subterranean reservoirs
    Patent number: 5246861
    Abstract: Complex metal anions such as cobaltic hexacyanide are utilized as nonradioactive tracers in reservoir studies. Sensitive analytical procedures enable detection and measurement of very low tracer levels.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: September 21, 1993
    Assignee: Conoco Inc.
    Inventors: John F. Miller, Clyde O. Sheely, Jerry W. Wimberley, Rhea A. Howard