Patents by Inventor Ernst Prott

Ernst Prott 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).

  • Process for removing contaminating coatings from metal surfaces
    Patent number: 5738127
    Abstract: A process for removing contaminating coatings from metal surfaces in which the metal surface to be cleaned is brought into contact with an aqueous alkaline solution containing as an additive 0.1 to 10% by weight, based on the aqueous alkaline solution, of at least one compound of the formulaR.sup.1 --O--(CH.sub.2 --CHR.sup.3 --O--).sub.x R.sup.2 Iin which R.sup.1 and R.sup.2 are individually alkyl of 1 to 15 carbon atoms, R.sup.3 is hydrogen or methyl and x is an integer from 1 to 25.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: April 14, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Heymanns, Waldemar Kascha, Ernst Prott, Horst Scholz