Patents by Inventor Hans S. H. Keil, deceased

Hans S. H. Keil, deceased 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).

  • Alkali metal or amine salts of a mixture of 2- and 3-alkyladipic acids as corrosion inhibitors
    Patent number: 4414125
    Abstract: A corrosion inhibited composition comprises an aqueous drilling, cutting, or polishing agent, an aqueous hydraulic fluid or an aqueous antifreeze compound; and an alkali metal salt, or an aliphatic amine salt of a mixture of 2- and 3-C.sub.6-12 -alkyladipic acids, the amount of this acid component being effective as a corrosion inhibitor.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: November 8, 1983
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Hans S. H. Keil, deceased, Helmut Alfs, Klaus Schulze