Granted Patent
Utility
US 6,771,028 · App. 10/426,555
Drive circuitry for four-color organic light-emitting device
Inventor:
Dustin L. Winters
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Apr 30, 2003
Inventor
Dustin L. Winters
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.