Granted Patent
Utility
US 5,350,490 · App. 08/024,205
Forming a color filter on a semiconductor substrate
Inventor:
Hyung Sup Lee
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Feb 22, 1993
Inventor
Hyung Sup Lee
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.