Granted Patent
Utility
US 5,120,623 · App. 07/624,076
Method of producing a substrate plate for a liquid crystal cell with black matrix areas
Inventors:
Stefan Brosig, Jurgen Waldmann
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Dec 7, 1990
Inventors
Stefan Brosig
Jurgen Waldmann
Assignee (at issue)
Nokia Unterhaltungselektronik GmbH
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.