Granted Patent
Utility
US 5,834,894 · App. 08/711,869
Carrier injection type organic electro-luminescent device which emits light in response to an application of a voltage
Inventors:
Tomoyuki Shirasaki, Norihiko Kaneko, Hiroyasu Yamada
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Sep 12, 1996
Inventors
Tomoyuki Shirasaki
Norihiko Kaneko
Hiroyasu Yamada
Assignee (at issue)
CASIO COMPUTER 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.