Granted Patent
Utility
US 6,720,090 · App. 09/753,091
Organic light emitting diode devices with improved luminance efficiency
Inventors:
Ralph H. Young, Jianmin Shi, Ching W. Tang
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 2, 2001
Inventors
Ralph H. Young
Jianmin Shi
Ching W. Tang
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.