Granted Patent
Utility
US 6,579,629 · App. 09/636,494
Cathode layer in organic light-emitting diode devices
Inventors:
Pranab K. Raychaudhuri, Ching W. Tang, Joseph K. Madathil
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Aug 11, 2000
Inventors
Pranab K. Raychaudhuri
Ching W. Tang
Joseph K. Madathil
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.