Patents by Inventor Stephen Howard Mason

Stephen Howard Mason 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).

  • Decoloration of bisphenol-A recycle stream with cation exchange resin
    Patent number: 4107218
    Abstract: All or part of bisphenol-A process mother liquor recycle stream is contacted with acidic cation exchange resin to remove color bodies. The acidic cation exchange resin is periodically washed and reactivated after use by a mixed phenol/water wash.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: August 15, 1978
    Assignee: Union Carbide Corporation
    Inventors: Frederick Miller Konrad, Stephen Howard Mason