Granted Patent
Utility
US 6,433,355 · App. 09/155,591
Non-degenerate wide bandgap semiconductors as injection layers and/or contact electrodes for organic electroluminescent devices
Inventors:
Walter Riess, Samuel Clagett Strite
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Feb 8, 1999
Inventors
Walter Riess
Samuel Clagett Strite
Assignee (at issue)
International Business Machines Corporation
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.