Patents by Inventor John A. Groetsch

John A. Groetsch 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).

  • Hydroconversion process for making lubricating oil basestocks
    Publication number: 20020153281
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Application
    Filed: December 14, 2000
    Publication date: October 24, 2002
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groetsch, Sylvain S. Hantzer