Patents by Inventor Lawrence E. Watts

Lawrence E. Watts 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 treating waste water contaminated with manganese
    Patent number: 4812240
    Abstract: Manganese is removed from an aqueous waste stream by adding a water-soluble lignosulfonate salt to the waste stream and passing the lignosulfonate-treated waste stream through an ultrafilter thereby producing a purified effluent stream.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: March 14, 1989
    Assignee: Quaker Chemical Corporation
    Inventor: Lawrence E. Watts