Patents by Inventor Robert J. Zappa

Robert J. Zappa 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).

  • Patent number: 4397424
    Abstract: A system for receiving and crushing whole lead acid storage batteries, and for classifying the components of crushed batteries into lead oxide, lead metal, plastic case components, and rubber case components and other fragments. Whole batteries are crushed into component particles, and lead oxide from the batteries is placed in liquid suspension. The lead oxide is subsequently removed by three separate settling and classifying tanks. Lead metal is removed by a liquid upflow column separation. A flotation tank and surface skimming arrangement separates plastic case fragments from rubber fragments.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: August 9, 1983
    Assignee: M.A. Industries, Inc.
    Inventors: Robert J. Zappa, Bobbie Peacock
  • Patent number: D385203
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: October 21, 1997
    Assignee: PolyMedica Industries, Inc.
    Inventor: Robert J. Zappa