Granted Patent
Utility
US 6,123,431 · App. 09/040,413
Backlight apparatus and light guide plate
Inventors:
Yasuko Teragaki, Katsutoshi Hibino, Youichiro Goto
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Mar 18, 1998
Inventors
Yasuko Teragaki
Katsutoshi Hibino
Youichiro Goto
Assignee (at issue)
SANYO ELECTRIC 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.