Granted Patent
Utility
US 6,593,689 · App. 10/087,059
Organic light-emitting device
Inventors:
Kazuhiko Hayashi, Takashi Fukuchi, Shinnzo Tsuboi, Atsushi Oda
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Feb 28, 2002
Inventors
Kazuhiko Hayashi
Takashi Fukuchi
Shinnzo Tsuboi
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.