Granted Patent
Utility
US 6,273,577 · App. 09/183,727
Light guide plate, surface light source using the light guide plate, and liquid crystal display using the surface light source
Inventors:
Youichiro Goto, Toru Nose, Michiaki Sato, Masahiro Higuchi, Takanari Kusafuka
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Oct 30, 1998
Inventors
Youichiro Goto
Toru Nose
Michiaki Sato
Masahiro Higuchi
Takanari Kusafuka
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.