Granted Patent
Utility
US 6,727,644 · App. 09/923,024
Organic light-emitting device having a color-neutral dopant in an emission layer and in a hole and/or electron transport sublayer
Inventors:
Tukaram K. Hatwar, Ralph H. Young
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Aug 6, 2001
Inventors
Tukaram K. Hatwar
Ralph H. Young
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.