Granted Patent
Utility
US 6,210,815 · App. 09/212,483
Organic thin film EL device and method for making the same
Inventor:
Mitsuma Ooishi
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Dec 16, 1998
Inventor
Mitsuma Ooishi
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.