Granted Patent
Utility
US 6,067,821 · App. 08/723,453
Process for making mineral wool fibers from lumps of uncalcined raw bauxite
Inventors:
James Roger Jackson, Charles F. Rapp, George Baybutt, Harry Pennington
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Oct 7, 1996
Inventors
James Roger Jackson
Charles F. Rapp
George Baybutt
Harry Pennington
Assignee (at issue)
Owens-Corning Fiberglas Technology, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.