Patents by Inventor Paul A. Schwonke

Paul A. Schwonke 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).

  • Process for Making a Paperboard from a High Consistency Slurry Containing High Levels of Crosslinked Cellulosic Fibers
    Publication number: 20080251224
    Abstract: A process is described for manufacturing a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers by dispersing the fibers in a screen with a rotor in the screen and then passing the fibers through the screen basket with a hole diameter of at least 2 mm and forming the cellulosic fibers on a foraminous support. Another slurry of regular cellulosic fibers is deposited on at least one side of the first slurry during the formation process. The formed web is dewatered and dried.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Applicant: Weyerhaeuser Co.
    Inventor: Paul A. Schwonke
  • Process for making a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers
    Patent number: 7381298
    Abstract: A process is described for manufacturing a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers by dispersing the fibers in a screen with a rotor in the screen and then passing the fibers through the screen basket with a hole diameter of at least 2 mm and forming the cellulosic fibers on a foraminous support. Another slurry of regular cellulosic fibers is deposited on at least one side of the first slurry during the formation process. The formed web is dewatered and dried.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 3, 2008
    Assignee: Weyerhaeuser Company
    Inventor: Paul A. Schwonke
  • Paperboard
    Publication number: 20060144537
    Abstract: A paperboard is made by a process using a high consistency pulp slurry containing high levels of crosslinked cellulosic fibers, dispersing the fibers in a screen with a rotor in the screen and then passing the fibers through the screen basket with a hole diameter of at least 2 mm and forming the cellulosic fibers on a foraminous support. Another slurry of regular cellulosic fibers is deposited on at least one side of the first slurry during the formation process and the resulting web is dewatered and dried.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventor: Paul Schwonke
  • Method of using a high consistency slurry containing high levels of crosslinked cellulosic fibers
    Publication number: 20060144540
    Abstract: A process of using a high consistency slurry containing high levels of crosslinked cellulosic fibers is described. In the process the fibers in the high consistency slurry are dispersed in a screen with a rotor and the fibers which pass through the through the screen are formed on a foraminous support.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventor: Paul Schwonke
  • Process for making a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers
    Publication number: 20060144538
    Abstract: A process is described for manufacturing a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers by dispersing the fibers in a screen with a rotor in the screen and then passing the fibers through the screen basket with a hole diameter of at least 2 mm and forming the cellulosic fibers on a foraminous support. Another slurry of regular cellulosic fibers is deposited on at least one side of the first slurry during the formation process. The formed web is dewatered and dried.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventor: Paul Schwonke