Patents by Inventor David J. Shemmans

David J. Shemmans 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).

  • Mounting assembly for power semiconductors
    Patent number: 5586004
    Abstract: A mounting assembly for power semiconductors comprises a plurality of modules (20) arranged in a symmetrical arrangement around a central axis. Each module has one or more heat sink substrate surfaces (201,203) for the mounting of semiconductor components (205) and an internal passage (202) for passing a fluid cooling medium therethrough in order to cool the semiconductor components. The assembly may comprise a prismatic body (24) providing the substrate surfaces (243).
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Wavedriver Limited
    Inventors: Ross M. Green, Michael J. Kellaway, David J. Shemmans, David J. McShane