Patents by Inventor Bernhard Bullemer

Bernhard Bullemer 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).

  • Effusion type evaporator cell for vacuum evaporators
    Patent number: 4543467
    Abstract: Vapor sources for vacuum evaporators in which the evaporation rate has hitherto been adjusted by varying the temperature of the vessel containing the evaporative substances, have a very large time constant, and an approximately exponential control characteristic. The invention substantially reduces the time constant in an effusion evaporator cell by providing that the rate is adjusted by means of a mechanical slide, preferably of boron nitride or graphite, placed in front of the vapor escape aperture or apertures of the evaporator vessel.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: September 24, 1985
    Assignee: Balzers Aktiengesellschaft
    Inventors: Ignaz Eisele, Bernhard Bullemer, Andreas Beck