Granted Patent
Utility
US 5,972,247 · App. 09/045,597
Organic electroluminescent elements for stable blue electroluminescent devices
Inventors:
Jianmin Shi, Chin H. Chen, Kevin P. Klubek
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Mar 20, 1998
Inventors
Jianmin Shi
Chin H. Chen
Kevin P. Klubek
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.