Granted Patent
Utility
US 4,661,411 · App. 06/832,627
Method for depositing a fluorocarbonsulfonic acid polymer on a support from a solution
Inventors:
Charles W. Martin, Bobby R. Ezzell, John D. Weaver
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Feb 25, 1986
Inventors
Charles W. Martin
Bobby R. Ezzell
John D. Weaver
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.