Patents by Inventor Norbert Krollmann

Norbert Krollmann 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).

  • Gas mixtures for thermal insulation
    Patent number: 5965231
    Abstract: The present invention relates to thermal insulation gas mixtures comprising cyclopentane and argon for filling cavities.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Rotermund, Anne-Kathrin Merten, Norbert Krollmann