Patents by Inventor Carl Bettendorf

Carl Bettendorf 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).

  • Method for producing mdi, especially 2,4'-mdi
    Publication number: 20040171869
    Abstract: MDI is prepared by a process comprising the following steps:
    Type: Application
    Filed: April 14, 2004
    Publication date: September 2, 2004
    Inventors: Martin Reif, Bernd Bruchmann, Siegmund Pohl, Carl Bettendorf, Heinz Plaumann, Kai Thiele