Patents by Inventor Robert W. McOnie

Robert W. McOnie 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).

  • Absorptive sludge dewatering process for papermaking waste
    Patent number: 5562832
    Abstract: Secondary sludge produced in the papermaking process is dewatered by adding a material capable of absorbing water together with dry fibers to the secondary sludge, and mixing the secondary sludge with the dried fibers to produce a modified secondary sludge which has sufficient structure and low enough moisture that it may be further dewatered by mechanical means. The preferred fiber adding materials are those readily produced in the papermaking process, particularly dry primary sludge, dried fines and bark and fly ash from boilers.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: October 8, 1996
    Assignee: Beloit Technologies, Inc.
    Inventors: Robert W. McOnie, John E. Rude