Patents by Inventor Werner Sachsze

Werner Sachsze 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).

  • Purification of formic acid by extractive distillation
    Patent number: 4076594
    Abstract: Formic acid is purified by extractive distillation of its aqueous solutions using a basic extractant, followed by distillation of the bottom mixture first obtained, the extractant used being N-formylmorpholine.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: February 28, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Buelow, Heinz Hohenschutz, Johannes E. Schmidt, Werner Sachsze