Patents by Inventor Randy S. Hebert

Randy S. Hebert 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).

  • Process to produce aromatics of low acid-wash color
    Patent number: 5004851
    Abstract: Nitration Grade benzene is made from a benzene stream with impurities including olefins by first fractionally distilling the benzene to a purity of at least 99 mole percent and subsequently passing the stream in a liquid phase in the presence of hydrogen through a hydrogenation step with a palladium catalyst under conditions such that substantially all olefins remaining in the stream are hydrogenated to paraffins.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: April 2, 1991
    Assignee: The Dow Chemical Company
    Inventors: George R. Durham, Randy S. Hebert