Granted Patent
Utility
US 6,702,959 · App. 10/171,737
Long life, white light emitting electroluminescent phosphor
Inventors:
Chen-Wen Fan, Richard G. W. Gingerich
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Jun 14, 2002
Inventors
Chen-Wen Fan
Richard G. W. Gingerich
Assignee (at issue)
OSRAM SYLVANIA Inc.
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.