Patents by Inventor Hanns Pohl

Hanns Pohl 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).

  • Partial dehydration of cyclohexanone oxime
    Patent number: 4061677
    Abstract: The application relates to a process for partial dehydration of cyclohexanone oxime by treatment with an aqueous solution of an inorganic salt, the crude cyclohexanone oxime being extracted at above its melting point countercurrently in an extraction column with a concentrated solution of ammonium or/and hydroxylammonium salt. The salt solution may be used again after concentration. This may be effected by simple evaporation.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: December 6, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Kahr, Hanns Pohl, Guenther Rapp, Peter Lauz