Granted Patent
Utility
US 4,964,702 · App. 07/326,649
Liquid crystal display device having a light shielding layer being a complementary color to the color filter
Inventors:
Yoshio Sugimoto, Ryujiro Muto, Takeji Arakaki
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Mar 21, 1989
Inventors
Yoshio Sugimoto
Ryujiro Muto
Takeji Arakaki
Assignee (at issue)
ASAHI GLASS 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.