Granted Patent
Utility
US 6,020,869 · App. 08/841,389
Multi-gray level display apparatus and method of displaying an image at many gray levels
Inventors:
Itsuo Sasaki, Yasoji Suzuki, Hirofumi Kato, Isao Arita, Toshio Yanagisawa, Kazuyoshi Yamamoto, Hiroyoshi Murata, Hiroyuki Hamagawa
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Apr 30, 1997
Inventors
Itsuo Sasaki
Yasoji Suzuki
Hirofumi Kato
Isao Arita
Toshio Yanagisawa
Kazuyoshi Yamamoto
Hiroyoshi Murata
Hiroyuki Hamagawa
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.