Granted Patent
Utility
US 6,583,583 · App. 10/069,023
Organic el material
Inventors:
Mahito Soeda, Hiroshi Miyazaki, Tohru Saito
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Feb 21, 2002
Inventors
Mahito Soeda
Hiroshi Miyazaki
Tohru Saito
Assignee (at issue)
NIPPON STEEL CHEMICAL CO., LTD.
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.