Patents by Inventor Hermann E. Nievergelt

Hermann E. Nievergelt 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).

  • Vacuum transfer device
    Patent number: 4643627
    Abstract: A vacuum transfer device includes a central processing chamber and a plurality of additional chambers radially positioned around the central chamber and in vacuum-tight connection therewith. A rotatable coulisse arrangement in the central chamber is extendable so as to reach into the additional chambers when correctly aligned. The device can transfer objects among several work stations without intermediate venting and re-evacuation of the system of chambers.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: February 17, 1987
    Assignee: International Business Machines Corporation
    Inventors: Johannes G. Bednorz, Pierre L. Gueret, Hermann E. Nievergelt, Hanspeter Ott, Wolfgang D. Pohl, Daniel F. Widmer