Patents by Inventor David M. Zall

David M. Zall 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).

  • Containment and riddance of oil spills
    Patent number: 3977969
    Abstract: The invention is a method of clearing oil spills by chemically treating the urface of the oil spill with a polymer of high molecular weight having jelling properties thereby causing the oil to coagulate. The oil is then easily raked off the surface of the water.
    Type: Grant
    Filed: October 26, 1971
    Date of Patent: August 31, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David M. Zall