Patents by Inventor Robert L. Lovell

Robert L. Lovell 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).

  • Process for removing tar bases from Lurgi tar acid stream
    Patent number: 4429170
    Abstract: A process is disclosed for purifying the tar acid mixture that is obtained from the Lurgi process of coal gasification. The tar acid is treated with dilute aqueous sulfuric acid solution to form non-volatile tar base salts from the tar base component and to hydrolyze the neutral oil component and then distilling the tar acid component off from the non-volatile tar base salts and the hydrolysis products of the neutral oil component.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: January 31, 1984
    Assignee: Koppers Company, Inc.
    Inventor: Robert L. Lovell