Patents by Inventor Stefan UBBEN

Stefan UBBEN 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).

  • Machine train for producing nitric acid
    Publication number: 20170291815
    Abstract: A machine train for producing nitric acid includes: a steam turbine having a steam turbine rotor rotating at a first rotational speed; a first compressor having a first compressor rotor rotating at a second rotational speed; a second compressor having a second compressor rotor rotating at a third rotational speed; and an expander having an expander rotor rotating at a fourth rotational speed. The steam turbine drives the first compressor. The rotor of the first compressor drives the second compressor. The expander drives the second compressor.
    Type: Application
    Filed: April 5, 2017
    Publication date: October 12, 2017
    Inventors: Kai ZIEGLER, Stefan UBBEN, Marco ERNST, Klaus HÖRMEYER, Roland EMMRICH