Granted Patent
Utility
US 6,831,406 · App. 09/577,137
Electroluminescent device having a very thin emission layer
Inventors:
Masao Fukuyama, Mutsumi Suzuki, Yuji Kudo, Yoshikazu Hori
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: May 24, 2000
Inventors
Masao Fukuyama
Mutsumi Suzuki
Yuji Kudo
Yoshikazu Hori
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.