Patents by Inventor Hans G. Wessjohann

Hans G. Wessjohann 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).

  • Semiconductor power module with an integrated heat pipe
    Patent number: 4727455
    Abstract: A semiconductor power module includes a metallized ceramic carrier plate having an opening formed therein, a semiconductor power component with a base area of a given size adjacent the ceramic plate at the opening, a heat pipe integrated in the semiconductor power module having a vapor space, a condensation zone and a heating zone for distributing heat removed from the semiconductor power component at the heating zone over an area of the condensation zone being larger than the given area, a highly heat-conducting ceramic base plate having two metallized sides, and a frame vacuum-tightly interconnecting the carrier plate and the base plate forming the vapor space of the heat pipe therebetween.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 23, 1988
    Assignee: Brown, Boveri & Cie AG
    Inventors: Arno Neidig, Hans G. Wessjohann