Patents by Inventor Byron B. Unterbrink

Byron B. Unterbrink 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).

  • Solvent extraction
    Patent number: 7348466
    Abstract: In a method for the solvent extraction of butadiene from a mixture of hydrocarbons having four carbon atoms per molecule, which method inherently produces tars, the extraction process is operated with a tar loading level, relative to the solvent employed, of no more than about 1.6 wt. %.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: March 25, 2008
    Assignee: Equistar Chemicals, LP
    Inventors: Joseph P. Bridges, Solon B. Williams, Byron B. Unterbrink