Patents by Inventor Robert W. Wansbrough

Robert W. Wansbrough 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).

  • Drying carbon black pellets
    Patent number: 6807749
    Abstract: Drying wet carbon black pellets by physically contacting carbon black pellets with warm carbon black smoke.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: October 26, 2004
    Assignee: Continental Carbon Company, Inc.
    Inventors: Don T. Norman, Robert W. Wansbrough
  • DRYING CARBON BLACK PELLETS
    Publication number: 20030204967
    Abstract: Drying wet carbon black pellets by physically contacting carbon black pellets with warm carbon black smoke.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 6, 2003
    Inventors: Don T. Norman, Robert W. Wansbrough
  • Process for converting waste motor oil to diesel fuel
    Patent number: 5885444
    Abstract: A process for thermally cracking waste motor oil into a diesel fuel product is provided. The thermal cracking process uses low temperature cracking temperatures from 625.degree. F. to 725.degree. F. with ambient pressure to generate a column distilled fraction of diesel fuel mixed with light ends, the light ends being flashed off to produce a high quality #2 diesel fuel. The process further provides for removal from the cracking vessel an additional product stream which, when filtered, is suitable for use as a #3 fuel oil and that can be further blended with a bunker oil to yield a #5 fuel product.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: March 23, 1999
    Assignee: Green Oasis Environmental, Inc.
    Inventors: Robert W. Wansbrough, Calvin E. Moore, Jr., William D. Carraway