Granted Patent
Utility
US 5,345,324 · App. 08/049,784
Active matrix liquid crystal display device having two light shielding layers
Inventors:
Toshihiko Koseki, Tetsuya Fukunaga, Hideo Takano, Hidemine Yamanaka
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Apr 19, 1993
Inventors
Toshihiko Koseki
Tetsuya Fukunaga
Hideo Takano
Hidemine Yamanaka
Assignee (at issue)
International Business Machines Corporation
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.