Granted Patent
Utility
US 6,562,266 · App. 09/829,024
Composite membrane and method for making the same
Inventor:
William E. Mickols
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Apr 9, 2001
Inventor
William E. Mickols
Assignee (at issue)
Dow Global Technologies 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.