Granted Patent
Utility
US 6,593,013 · App. 10/041,450
Electroluminescence device, cyclic azine compound and production process of cyclic azine dye
Inventors:
Kazumi Nii, Tatsuya Igarashi
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Jan 10, 2002
Inventors
Kazumi Nii
Tatsuya Igarashi
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.