Patents by Inventor Karlheinz Fazniewscy

Karlheinz Fazniewscy 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).

  • Method of preparing fluorine-containing ethane derivatives
    Patent number: 5214223
    Abstract: A method of preparing fluorine-containing ethane derivatives using a catalyst mixture which comprises a metal halide and a sulfonic acid derivative is described. The method is particularly well suited for preparing CF.sub.3 CHCl.sub.2 (R123) from perchloroethylene and for preparing CF.sub.3 CH.sub.2 F (R134a) from trifluoroethylene.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: May 25, 1993
    Assignee: Kali-Chemie AG
    Inventors: Johannes Eicher, Karlheinz Fazniewscy, Werner Rudolph, Hans-Walter Swidersky
  • Method of preparing fluorine-containing ethane derivatives
    Patent number: 5171900
    Abstract: A method of preparing fluorine-containing ethane derivatives using a catalyst mixture which comprises a metal halide and a sulfonic acid derivative is described. The method is particularly well suited for preparing CF.sub.3 CHCl.sub.2 (R123) from perchloroethylene and for preparing CF.sub.3 CH.sub.2 F (R134a) from trifluoroethylene.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: December 15, 1992
    Assignee: Kali-Chemie AG
    Inventors: Johannes Eicher, Karlheinz Fazniewscy, Werner Rudolph, Hans-Walter Swidersky