Granted Patent
Utility
US 5,693,428 · App. 08/596,415
Organic electroluminescent device
Inventors:
Takanori Fujii, Takeshi Sano, Yuji Hamada, Kousuke Takeuchi, Kenichi Shibata
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Feb 2, 1996
Inventors
Takanori Fujii
Takeshi Sano
Yuji Hamada
Kousuke Takeuchi
Kenichi Shibata
Assignee (at issue)
SANYO ELECTRIC CO., 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.