Granted Patent
Utility
US 5,928,802 · App. 08/857,746
Efficient blue organic electroluminescent devices
Inventors:
Jianmin Shi, Chin H. Chen
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: May 16, 1997
Inventors
Jianmin Shi
Chin H. Chen
Assignee (at issue)
EASTMAN KODAK COMPANY
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.