Granted Patent
Utility
US 5,604,398 · App. 08/359,185
Electroluminescence light-emitting device with multi-layer light-emitting structure
Inventors:
Tae Hyoung Zyung, Jang-Joo Kim, Wol-Yon Hwang
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Dec 19, 1994
Inventors
Tae Hyoung Zyung
Jang-Joo Kim
Wol-Yon Hwang
Assignee (at issue)
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
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.