Patents by Inventor Bertram Bohmer

Bertram Bohmer 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).

  • Oxidation process of reactive aromatics with reactivation of the catalyst using potassium permanganate
    Patent number: 4477380
    Abstract: In the oxidation of reactive aromatics with molecular oxygen in carboxylic acid solution in the presence of a catalyst consisting of a cobalt compound and possibly with addition of a manganese and a bromine compound suitable as Co-catalyst, an inactivation of the catalyst system readily occurs. This is prevented in that after each reaction cycle the catalyst is reactivated by treatment with a strong oxidant and the water formed in the reaction is removed by distillation.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: October 16, 1984
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Ulrich Knips, Bertram Bohmer, Roland Herzberg