Granted Patent
Utility
US 6,614,176 · App. 09/812,936
Organic electroluminescent device including charge transport buffer layer
Inventors:
Dong Hyun Kim, Sung Woo Cho
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Mar 27, 2001
Inventors
Dong Hyun Kim
Sung Woo Cho
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.