Granted Patent
Utility
US 6,452,218 · App. 08/872,657
Ultra-thin alkaline earth metals as stable electron-injecting electrodes for polymer light emitting diodes
Inventor:
Yong Cao
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Jun 10, 1997
Inventor
Yong Cao
Assignee (at issue)
Uniax 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.