Granted Patent
Utility
US 6,621,840 · App. 09/813,997
Organic light-emitting device
Inventor:
Yasushi Araki
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Mar 22, 2001
Inventor
Yasushi Araki
Assignee (at issue)
Fujitsu Limited
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.