Granted Patent
Utility
US 6,734,636 · App. 10/176,931
OLED current drive pixel circuit
Inventors:
James L. Sanford, Frank R. Libsch
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Jun 21, 2002
Inventors
James L. Sanford
Frank R. Libsch
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.