Patents by Inventor Heinz Aschmann

Heinz Aschmann 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 the preparation of 1,3-diamino-2,2-dimethyl propane
    Patent number: 4078003
    Abstract: A method for preparing neopentane diamine is disclosed comprising reacting neopentane glycol with ammonia in the presence of hydrogen and a nickel containing catalyst at elevated temperatures and pressures. Neopentane diamine is useful as an intermediate in the preparation of polyurethanes.
    Type: Grant
    Filed: September 14, 1976
    Date of Patent: March 7, 1978
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Hans Feichtinger, Heinz Aschmann, Hans-Walter Birnkraut, Ludwig Brinkmann, Werner Pluta