Granted Patent
Utility
US 6,809,709 · App. 09/825,850
Organic electro-luminescence device
Inventors:
Masahiro Uchida, Osamu Yokoyama
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Apr 5, 2001
Inventors
Masahiro Uchida
Osamu Yokoyama
Assignee (at issue)
SEIKO EPSON 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.