Granted Patent
Utility
US 6,340,384 · App. 09/577,331
Copper/amine oxide wood preservatives
Inventor:
Leigh E. Walker
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: May 24, 2000
Inventor
Leigh E. Walker
Assignee (at issue)
LONZA LTD
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.