Patents by Inventor Seigfried Billenstein

Seigfried Billenstein 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).

  • Fluorinated sulfosuccinates
    Patent number: 4167639
    Abstract: Addition products of water-soluble sulfites or disulfites to maleic acid mono- or diesters of partially fluorinated alkanols or the mono-, di- or triethyleneglycol ethers of these alcohols are useful as surface active agents, especially as wetting agents, as levelling agents in wax emulsions or as dispersants.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: September 11, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Seigfried Billenstein, Heinz Brecht, Dieter Hoffmann