Patents by Inventor Robert Mark Quilliam

Robert Mark Quilliam 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).

  • Electron beam reading arrangements
    Patent number: 4101935
    Abstract: An electron beam is used for reading signals in the form of surface modulations on a thermoplastic recording. In order to improve the signal to noise ratio the thermoplastic recording is first charged using a flood beam source of electrons and the surface charge so produced repells scanning reading electrons which are then collected by a detector.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: July 18, 1978
    Assignee: The Marconi Company Limited
    Inventor: Robert Mark Quilliam