Granted Patent
Utility
US 6,723,455 · App. 09/962,483
Organic electro-luminescent element and material of organic electro-luminescent element
Inventors:
Noriko Ueda, Mitsunori Matsuura, Hiroshi Kita
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Sep 24, 2001
Inventors
Noriko Ueda
Mitsunori Matsuura
Hiroshi Kita
Assignee (at issue)
Konica 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.