Patents by Inventor Peter M. Dryburgh

Peter M. Dryburgh 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).

  • Epitaxial crystalline aluminium nitride
    Patent number: 4189516
    Abstract: Material suitable for a surface acoustic wave device comprises an epitaxial film of aluminum nitride on the surface of a substrate of single crystal aluminum oxide, said surface having the crystallographic orientation 1100.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: February 19, 1980
    Assignee: National Research Development Corporation
    Inventors: Peter M. Dryburgh, Raymond R. Halstead
  • Synthesis of aluminum nitride
    Patent number: 4172754
    Abstract: Solid aluminum nitride, deposited for example, in epitaxial layers, is prepared by reacting aluminum and selenium to form aluminum monoselenide, and transporting the aluminum monoselenide in an inert carrier gas to a heated deposition zone where it is contacted with and reacts with nitrogen to give the aluminum nitride, the carrier gas flushing away elemental selenium also produced in the deposition zone.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: October 30, 1979
    Assignee: National Research Development Corporation
    Inventor: Peter M. Dryburgh