Patents by Inventor Friedhelm Bylsma

Friedhelm Bylsma 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).

  • Production of methyldichlorophosphane
    Patent number: 4104304
    Abstract: Production of methyldichlorophosphane. The compound is made by reacting methane and phosphorus trichloride in a reaction zone in which a temperature higher than 500.degree. C is maintained. More specifically, hot reaction gas coming from the reaction zone is mechanically freed from solid matter, and the reaction gas freed from solid matter is passed to a quenching zone in which it is quenched with liquefied reaction mixture having 0.3 to 5 weight % of an organic barium compound or a non-ionic surfactant dissolved therein.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: August 1, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Stefan Schafer, Klaus Gehrmann, Alexander Ohorodnik, Karl-Heinz Steil, Wernfried Riechmann, Friedhelm Bylsma