Patents by Inventor Otto Ganschow

Otto Ganschow 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 pump system
    Patent number: 5733104
    Abstract: A vacuum pump system for multi-stage gas inlet systems and including a pumping unit formed of a turbomolecular pump and one or several further pumps arranged downstream of the turbomolecular pump and the rotors of which are located on the same shaft as the rotor of the turbomolecular pump, and an additional intermittently operated dry running pump, which discharges against atmospheric pressure.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: March 31, 1998
    Assignee: Balzers-Pfeiffer GmbH
    Inventors: Armin Conrad, Otto Ganschow