Patents by Inventor Timothy Burrell

Timothy Burrell 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).

  • Pyrolysis method for increasing limonene production and novel oven to facilitate such method
    Patent number: 6149881
    Abstract: The amount of limonene produced during pyrolysis of scrap tire carcass or polyisoprene rubber can be increased by decreasing residence time of the isoprene gas produced during the thermal degradation of polyisoprene rubber in the high temperature reactor region of an oven. This is achieved by using a novel oven design which permits rapid expansion of the isoprene gas away from the high temperature reactor region of the oven to a cooler region where the gas forms limonene and condenses. This pyrolysis method also decreases the amount of soot produced while increasing the amount of limonene produced. Furthermore, this system readily enables separation of the solid, liquid and gas phases produced during pyrolysis.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: November 21, 2000
    Inventors: Curtiss D. Hanson, Timothy Burrell, James E. Haworth, James A. Olson
  • Pyrolysis method for increasing limonene production and novel oven to facilitate such method
    Patent number: 5977421
    Abstract: The amount of limonene produced during pyrolysis of scrap tire carcass or polyisoprene rubber can be increased by decreasing residence time of the isoprene gas produced during the thermal degradation of polyisoprene rubber in the high temperature reactor region of an oven. This is achieved by using a novel oven design which permits rapid expansion of the isoprene gas away from the high temperature reactor region of the oven to a cooler region where the gas forms limonene and condenses. This pyrolysis method also decreases the amount of soot produced while increasing the amount of limonene produced. Furthermore, this system readily enables separation of the solid, liquid and gas phases produced during pyrolysis.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: November 2, 1999
    Inventors: Curtiss D. Hanson, Timothy Burrell, James E. Haworth, James A. Olson