Patents by Inventor Gerhard Martin Sessler

Gerhard Martin Sessler 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).

  • Technique for fabrication of foil electret
    Patent number: 3945112
    Abstract: A technique for the fabrication of thin film electrets designed for use in electroacoustic transducers involves depositing a thin film of aluminum or titanium upon a perfluorinated foil and etching away the film prior to deposition of gold. The resultant structure evidences superior adhesion characteristics and electrical characteristics comparable to those previously described.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: March 23, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Harold Schonhorn, Gerhard Martin Sessler, James Edward West