Patents by Inventor Erhardt Tabel

Erhardt Tabel 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).

  • Antifoaming additive for acid liquids
    Patent number: 4897166
    Abstract: Acidic liquids, such as galvanic electrolyte solutions for metal electroplating, contain a surfactant and a foam inhibiting agent which is a perfluoroalkyl-containing ester of phosphoric acid.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: January 30, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Detlef Melzer, Erhardt Tabel, Hans-Peter Biermann