Granted Patent
Utility
US 6,693,295 · App. 10/024,375
Indole derivative, material for light-emitting device and light-emitting device using the same
Inventor:
Kazumi Nii
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Dec 21, 2001
Inventor
Kazumi Nii
Assignee (at issue)
Fujitsu Limited
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.