Patents by Inventor Susan A. Freeland

Susan A. Freeland 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 for removing wax from a pulp furnish
    Patent number: 6656324
    Abstract: A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated with an agglomeration chemical which separates wax from the fibers and agglomerates the wax for removal by screening. In a preferred embodiment, the pulp furnish is treated with a caustic material to enhance wax removal.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: December 2, 2003
    Assignee: Weyerhaeuser Company
    Inventor: Susan A. Freeland
  • Method for removing wax from a pulp furnish
    Publication number: 20020148573
    Abstract: A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated with an agglomeration chemical which separates wax from the fibers and agglomerates the wax for removal by screening. In a preferred embodiment, the pulp furnish is treated with a caustic material to enhance wax removal.
    Type: Application
    Filed: February 14, 2002
    Publication date: October 17, 2002
    Applicant: Weyerhaeuser Company
    Inventor: Susan A. Freeland