Granted Patent
Utility
US 4,355,116 · App. 06/220,568
Stable high performance bipolar membrane with cross-linked functional groups
Inventors:
Lester T. C. Lee, Kang-Jen Liu
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Dec 29, 1980
Inventors
Lester T. C. Lee
Kang-Jen Liu
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.