Patents by Inventor Helmut Hahnel

Helmut Hahnel 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).

  • Process for preparing branched polyethercarbonates and use thereof
    Patent number: 9051424
    Abstract: The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: June 9, 2015
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Matthias Lobert, Sarah Schmitz, Frank Schubert, Roland Hubel, Helmut Hahnel
  • PROCESS FOR PREPARING BRANCHED POLYETHERCARBONATES AND USE THEREOF
    Publication number: 20140179894
    Abstract: The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use.
    Type: Application
    Filed: July 4, 2012
    Publication date: June 26, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Matthias Lobert, Sarah Schmitz, Frank Schubert, Roland Hubel, Helmut Hahnel