Patents by Inventor Hans-Adolf Arfmann

Hans-Adolf Arfmann 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 for the preparation of coniferyl aldehyde
    Patent number: 5344994
    Abstract: Coniferyl aldehyde can be prepared from eugenol with the aid of fungi or their constituents.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: September 6, 1994
    Assignee: Haarmann & Reimer GmbH
    Inventors: Wolf-Rainer Abraham, Hans-Adolf Arfmann