Granted Patent
Utility
US 5,873,909 · App. 08/056,135
Method and compositions for treating fibrous cellulosic materials
Inventors:
George L. Brodmann, John S. Thackrah
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Apr 7, 1998
Inventors
George L. Brodmann
John S. Thackrah
Assignee (at issue)
Ducoa, L.P.
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.