Patents by Inventor Theodor Jacobsen

Theodor Jacobsen 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).

  • Manufacture of anthraquinones
    Patent number: 4045456
    Abstract: Anthraquinones are manufactured by cyclizing o-benzoylbenzoic acids in the presence of oxygen-containing compounds of aluminum and silicon at elevated temperatures. The products are starting materials for the manufacture of dyes.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: August 30, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Theodor Jacobsen, Heinz Eilingsfeld, Ernest Miesen, Gerhard Nestler