Granted Patent
Utility
US 4,766,161 · App. 06/871,184
Bipolar membranes and methods of making same
Inventors:
Frederick P. Chlanda, Ming J. Lan
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Jun 5, 1986
Inventors
Frederick P. Chlanda
Ming J. Lan
Assignee (at issue)
ALLIED CONSULTING, INC.
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.