Granted Patent
Utility
US 6,329,083 · App. 09/186,081
Organic electroluminescent device containing a benzoperylene compound
Inventors:
Satoru Toguchi, Atsushi Oda, Hitoshi Ishikawa
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Nov 5, 1998
Inventors
Satoru Toguchi
Atsushi Oda
Hitoshi Ishikawa
Assignee (at issue)
NEC 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.