Granted Patent
Utility
US 5,706,023 · App. 08/487,704
Method of driving an image display device by driving display materials with alternating current
Inventors:
Seiichi Nagata, Etsuya Takeda, Tetsuya Kawamura, Yutaka Nanno
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Jun 7, 1995
Inventors
Seiichi Nagata
Etsuya Takeda
Tetsuya Kawamura
Yutaka Nanno
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.