Granted Patent
Utility
US 6,123,806 · App. 09/116,513
Process for kraft chemical recovery
Inventor:
Christopher Roberts
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Jul 16, 1998
Inventor
Christopher Roberts
Assignee (at issue)
Champion International Corporation Limited
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.