Granted Patent
Utility
US 6,492,041 · App. 09/220,622
Organic electroluminescent device having high efficient luminance
Inventors:
Hitoshi Ishiskawa, Satoru Toguchi, Atsushi Oda
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Dec 24, 1998
Inventors
Hitoshi Ishiskawa
Satoru Toguchi
Atsushi Oda
Assignee (at issue)
NEC CORPORATION
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.