Patents by Inventor Markus Szirmay

Markus Szirmay 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).

  • Gas friction vacuum pump having a cooling system
    Patent number: 5577883
    Abstract: The invention relates to a gas friction pump with a high vacuum (HV) area and a forevacuum area (FV) area; in order to avoid, on the pumping surfaces, the formation of solid materials when such pumps are used for chemical processes, it is proposed that the HV area and the FV area have different working temperatures, so that the temperature of the HV area is lower than the temperature of the FV area (FIG. 1).
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: November 26, 1996
    Assignee: Leybold Aktiengesellschaft
    Inventors: Gunter Schutz, Markus Szirmay, Peter Reimer