Granted Patent
Utility
US 6,767,654 · App. 09/869,920
Organic electroluminescent device
Inventors:
Kouhei Tamao, Shigehiro Yamaguchi, Manabu Uchida, Takaharu Nakano, Toshihiro Koike, Takenori Izumizawa, Kenji Furukawa
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Aug 24, 2001
Inventors
Kouhei Tamao
Shigehiro Yamaguchi
Manabu Uchida
Takaharu Nakano
Toshihiro Koike
Takenori Izumizawa
Kenji Furukawa
Assignee (at issue)
Chisso 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.