Patents by Inventor Leon Lantz, II

Leon Lantz, II 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).

  • Process of preventing visual access to a semiconductor device by applying an opaque ceramic coating to integrated circuit devices
    Patent number: 5258334
    Abstract: Reverse engineering of integrated circuit devices is prevented by denying visual access to the topology of an integrated circuit device. Visual access is denied by coating the device with an opaque ceramic. The opaque ceramic is produced by first mixing opaque particulate with a silica precursor. The mixture is then applied to the surface of the integrated circuit device. The coated device is heated to a temperature in the range of 50.degree. C. to 450.degree. C. in an inert environment for a time within the range of 1 second to 6 hours to allow the coating to flow across the surface of the device without ceramifying. The coated device is then heated to a temperature in the range of 20.degree. C. to 1000.degree. C. in a reactive environment for a time in the range of 2 to 12 hours to allow the coating to ceramify.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: November 2, 1993
    Assignee: The U.S. Government as represented by the Director, National Security Agency
    Inventor: Leon Lantz, II