Patents by Inventor Richard L. Sleeter, Jr.

Richard L. Sleeter, Jr. 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).

  • Method of removing high density stickies from secondary papermaking fibers
    Patent number: 7294226
    Abstract: A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases overall efficiency of the system. In a preferred embodiment, a first rejects aqueous stream from a first stage bank of centrifugal cleaners is treated in a flotation cell before being fed to a second stage bank of centrifugal cleaners. With the improved technique, the accepts from the first stage bank of centrifugal cleaners may be combined with the accepts from the second stage bank of centrifugal cleaners and fed forward to a thickening device, for example. The technique is also suitably employed for removing stickies from material which has already been screened with a fine screen.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: November 13, 2007
    Assignee: Georgia-Pacific Consumer Operations LLC
    Inventors: Robert L. de Jong, Richard L. Sleeter, Jr., Robert J. Kellogg
  • Method of removing high density stickies from secondary papermaking fibers
    Patent number: 7063770
    Abstract: A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases overall efficiency of the system. In a preferred embodiment, a first rejects aqueous stream from a first stage bank of centrifugal cleaners is treated in a flotation cell before being fed to a second stage bank of centrifugal cleaners. With the improved technique, the accepts from the first stage bank of centrifugal cleaners may be combined with the accepts from the second stage bank of centrifugal cleaners and fed forward to a thickening device, for example. The technique is also suitably employed for removing stickies from material which has already been screened with a fine screen.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: June 20, 2006
    Assignee: Georgia-Pacific Corporation
    Inventors: Robert L. de Jong, Richard L. Sleeter, Jr., Robert J. Kellogg