Patents by Inventor Frank Stieger

Frank Stieger 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).

  • Method of making laminar batteries
    Patent number: 4177552
    Abstract: Thin flat electrical cells and batteries comprising frames formed with a central opening for receiving wet electrical cell components and made from a two layered structure of a high melting thermoplastic material and a lower melting thermoplastic material, and methods of making the same.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: December 11, 1979
    Assignee: Polaroid Corporation
    Inventors: Michael E. Gordon, Frank Stieger
  • Laminar batteries and methods of making the same
    Patent number: 4177330
    Abstract: Thin flat electrical cells and batteries comprising frames formed with a central opening for receiving wet electrical cell components and made from a two layered structure of a high melting thermoplastic material and a lower melting thermoplastic material, and methods of making the same.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: December 4, 1979
    Assignee: Polaroid Corporation
    Inventors: Michael E. Gordon, Frank Stieger