Granted Patent
Utility
US 6,165,322 · App. 08/901,887
Polyamidoamine/epichlorohydrin resins bearing polyol sidechains as dry strength agents
Inventor:
Barton K. Bower
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Jul 29, 1997
Inventor
Barton K. Bower
Assignee (at issue)
HERCULES LLC
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.