Granted Patent
Utility
US 6,236,380 · App. 09/110,802
Method for displaying gradation with plasma display panel
Inventors:
Koichi Wani, Naoki Kosugi, Takao Wakitani
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Jul 6, 1998
Inventors
Koichi Wani
Naoki Kosugi
Takao Wakitani
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.