Patents by Inventor Donald Bertram Irish

Donald Bertram Irish 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).

  • Susceptor for heating semiconductor substrates
    Patent number: 4099041
    Abstract: An integral graphite susceptor of the type comprising a hollow polyhedron, adapted to support a semiconductor substrate on an outer planar surface of a wall thereof, has a recessed cavity adjacent the inner surface of the wall and shaped so that the floor of the cavity is parallel to the outer planar surface. The cavity may comprise an oblong-shaped slot machined into the wall of the susceptor, which is typically a hollow truncated pyramid.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: July 4, 1978
    Assignee: RCA Corporation
    Inventors: Samuel Berkman, Donald Bertram Irish