Patents by Inventor Donald Merkel Simmons

Donald Merkel Simmons 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).

  • Battery separator
    Patent number: 4000352
    Abstract: A battery separator is provided that has a plurality of protrusions extending above the main surface thereof. The protrusions are arranged in an entirely new pattern which permits a minimum total area of the separator to be covered with protrusions and yet assures good contact with all areas of a battery's grid. This is done by arranging the protrusions in alternating rows in a manner blocking any openings between protrusions with which an element of the battery's grid could be registered.Another aspect includes a compressible battery separator having compressible embossments.
    Type: Grant
    Filed: June 1, 1972
    Date of Patent: December 28, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Bonderinko Hollenbeck, Alan Lee Stockett, Joseph Louis Tate, Donald Merkel Simmons