Granted Patent
Utility
US 6,791,521 · App. 10/084,942
Liquid crystal display device having a gray-scale voltage selector circuit
Inventors:
Hironobu Isami, Iwao Takemoto, Toshio Miyazawa, Katsumi Matsumoto
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Mar 1, 2002
Inventors
Hironobu Isami
Iwao Takemoto
Toshio Miyazawa
Katsumi Matsumoto
Assignees (at issue)
HITACHI, LTD.
Hitachi Device Engineering 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.