Granted Patent
Utility
US 6,420,057 · App. 09/610,636
Organic electroluminescent element
Inventors:
Noriko Ueda, Yoshiyuki Suzuri, Taketoshi Yamada, Hiroshi Kita
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jul 5, 2000
Inventors
Noriko Ueda
Yoshiyuki Suzuri
Taketoshi Yamada
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.