Patents by Inventor John F. Dittmann

John F. Dittmann 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).

  • Lead/acid battery having horizontal plates
    Patent number: 4425412
    Abstract: Disclosed are maintenance-free cells and batteries of the lead/acid type which have improved deep cycle life. The plates are flat and are oriented horizontally as a stack in a cell which contains unabsorbed free electrolyte. The free electrolyte wets but does not cover the top surface of at least one negative plate. The vertical dimension of the plate stack must not exceed one-half its major horizontal dimension.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: January 10, 1984
    Assignee: Eagle-Picher Industries, Inc.
    Inventors: John F. Dittmann, Elliott M. Morse, Earl S. Carr