Patents by Inventor Robert Powell Williams

Robert Powell Williams 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).

  • Combination glass/low temperature deposited Si.sub.w N.sub.x H.sub.y O.sub. z
    Patent number: 4091407
    Abstract: A semiconductor device having an improved passivating structure comprises a first primary passivating layer free of any layer of silicon nitride (Si.sub.3 N.sub.4), disposed on a surface of a semiconductor body, a metallic conductor disposed on the first passivating layer, and a secondary passivating overcoat disposed over the metallic conductor, wherein the secondary passivating overcoat includes both a glass layer on the conductor and a low-temperature-deposited (typically 300.degree. C) nitride layer on the glass layer. The device is highly resistant to degradation in the presence of water vapor and corrosive atmospheres.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: May 23, 1978
    Assignee: RCA Corporation
    Inventors: Robert Powell Williams, Murray Arthur Polinsky