Patents by Inventor Bernd Schwethelm

Bernd Schwethelm 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).

  • Separation of ammonium chloride from the gas phase of an isocyanate production process
    Patent number: 9029594
    Abstract: Isocyanates are produced in the gas phase and by-products such as ammonium halides are selectively separated from the gas phase by desublimation.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: May 12, 2015
    Assignee: Bayer MaterialScience AG
    Inventors: Sven Michael Hansen, Ralf Schneider, Bernd Schwethelm, Rolf Schiefer, Jürgen Dreher
  • SEPARATION OF AMMONIUM CHLORIDE FROM THE GAS PHASE OF AN ISOCYANATE PRODUCTION PROCESS
    Publication number: 20100010257
    Abstract: Isocyanates are produced in the gas phase and by-products such as ammonium halides are selectively separated from the gas phase by desublimation.
    Type: Application
    Filed: May 26, 2009
    Publication date: January 14, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Sven Michael Hansen, Ralf Schneider, Bernd Schwethelm, Rolf Schiefer, Jurgen Dreher