Patents by Inventor Martin Ebnoether

Martin Ebnoether 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).

  • Reverse etching of chromium
    Patent number: 4421593
    Abstract: A process for reverse etching a layer of chromium on a substrate is provided wherein a layer of resist is formed on the chromium and developed, thus exposing a portion of the chromium. The exposed chromium is passivated by backscattering from a suitable backing plate in a plasma, the resist is removed and the unpassivated chromium etched with a conventional liquid etchant. The pattern formed in the chromium layer is the opposite of that original formed in the resist material.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: December 20, 1983
    Assignee: RCA Corporation
    Inventors: Bernard J. Curtis, Martin Ebnoether