Granted Patent
Utility
US 6,475,648 · App. 09/589,731
Organic electroluminescent devices with improved stability and efficiency
Inventors:
Tukaram K. Hatwar, Gopalan Rajeswaran, Ching W. Tang, Jianmin Shi
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Jun 8, 2000
Inventors
Tukaram K. Hatwar
Gopalan Rajeswaran
Ching W. Tang
Jianmin Shi
Assignee (at issue)
EASTMAN KODAK COMPANY
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.