Patents by Inventor Herbert Feisel

Herbert Feisel 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 of generating o-xylene-air mixtures for the production of phthalic anhydride
    Patent number: 6984289
    Abstract: Process for generating a homogeneous gas mixture of o-xylene and air for the production of phthalic anhydride wherein o-xylene is completely evaporated in the absence of oxygen, superheated and then mixed with air and supplied to a phthalic anhydride reactor.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: January 10, 2006
    Assignee: MG Technologies AG
    Inventors: Helmuth Domes, Thomas Gutermuth, Herbert Feisel, Lutz Urban
  • Process of generating o-xylene-air mixtures for the production of phthalic anhydride
    Publication number: 20030089460
    Abstract: Process for generating a homogeneous gas mixture of o-xylene and air for the production for the production of phthalic anhydride wherein o-xylene is completely evaporated in the absence of oxygen, superheated and then mixed with air and supplied to a phthalic anhydride reactor.
    Type: Application
    Filed: June 25, 2002
    Publication date: May 15, 2003
    Inventors: Helmuth Domes, Thomas Gutermuth, Herbert Feisel, Lutz Urban