Granted Patent
Utility
US 6,811,896 · App. 10/208,595
Organic light emitting device (OLED) with thick (100 to 250 nanometers) porphyrin buffer layer
Inventors:
Hany Aziz, Zoran D. Popovic, Nan-Xing Hu, Ah-Mee Hor
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Jul 29, 2002
Inventors
Hany Aziz
Zoran D. Popovic
Nan-Xing Hu
Ah-Mee Hor
Assignee (at issue)
Xerox 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.