Patents by Inventor Burkhardt Koehler

Burkhardt Koehler 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).

  • PREPOLYMERS
    Publication number: 20090247721
    Abstract: The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.
    Type: Application
    Filed: February 23, 2009
    Publication date: October 1, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Marc Leimenstoll, Burkhardt Koehler, Christos Karafilidis, Matthias Wintermantel
  • LOW-VISCOSITY ESTER MIXTURES
    Publication number: 20090094886
    Abstract: The invention relates to the preparation of low-viscosity ester mixtures for transesterification of vegetable or animal fats or oils with monofunctional esters.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 16, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Burkhardt Koehler, Harald Blum, Sebastian Doerr