Patents by Inventor David Allen Barker

David Allen Barker 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).

  • Gasoline-oxygenate blend and method of producing the same
    Patent number: 7981170
    Abstract: By controlling one or more properties of a gasoline-oxygenate blend, a gasoline-oxygenate blend may be blended to contain at least one alcohol that exhibits acceptable properties and characteristics. This blend and the preferred method of preparing this blend includes an alcohol, most preferably ethanol, to reduce or eliminate the introduction of MTBE while offering acceptable properties such as volatility and temperature while effectively reducing pollutant emissions.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: July 19, 2011
    Assignee: Shell Oil Company
    Inventors: Charles Arthur Lieder, Lloyd Elbert Funk, David Allen Barker
  • Use of perfluorocarbons as tracers in chemical compositions
    Patent number: 6214624
    Abstract: The present invention is directed to tracer-containing chemical compositions and to the use of at least one perfluorocarbon tracer in such compositions to provide a means of identifying and quantitatively analyzing such compositions.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: April 10, 2001
    Assignee: Shell Oil Company
    Inventors: David Allen Barker, Thomas Clayton Forschner, Randall Lee Shearer