Patents by Inventor Dennis E. Burd

Dennis E. Burd 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).

  • Cyclization of 1,5-hexadiene to cyclohexene
    Patent number: 4187386
    Abstract: 1,5-Hexadiene is cyclized to cyclohexene by contacting 1,5-hexadiene with a mixture of a first catalyst selected from the group consisting of chromium oxides, chromium chlorides, chromium bromides, molybdenum oxides, molybdenum chlorides, molybdenum bromides, tungsten oxides, tungsten chlorides, tungsten bromides, iron oxides, cobalt oxides, nickel oxides, elemental sulfur, SiO.sub.2, Al.sub.2 O.sub.3, vanadium metal, vanadium oxides, VOF.sub.3, and mixtures thereof, and a second catalyst selected from a tin (IV) halide and mixtures thereof.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: February 5, 1980
    Assignee: Allied Chemical Corporation
    Inventors: George D. Lockyer, Jr., Dennis E. Burd, Richard F. Sweeney, Bernard Sukornick, Harry E. Ulmer