Granted Patent
Utility
US 6,835,474 · App. 10/290,216
Methine compound, material for organic luminescence element, and organic luminescence element using the same
Inventors:
Hisashi Okada, Terukazu Yanagi
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Nov 8, 2002
Inventors
Hisashi Okada
Terukazu Yanagi
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.