Patents by Inventor Herbert Riegel

Herbert Riegel 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 olefinic halides
    Patent number: 3935288
    Abstract: Olefinic halides are produced by catalytic dehydrohalogenation of the corresponding saturated halide by direct contact thereof with a melt containing a multivalent metal halide in its higher and lower valence state. In particular, 1,2-dichloroethane is dehydrochlorinated to vinyl chloride by contacting thereof with a molten salt mixture of cuprous and cupric chloride at high per pass conversion and high vinyl chloride selectivity.
    Type: Grant
    Filed: December 2, 1970
    Date of Patent: January 27, 1976
    Assignee: The Lummus Company
    Inventor: Herbert Riegel