Granted Patent
Utility
US 6,456,002 · App. 09/277,875
Moisture insensitive electroluminescent phosphor
Inventors:
Keith A. Klinedinst, Robert F. Clark
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Mar 29, 1999
Inventors
Keith A. Klinedinst
Robert F. Clark
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.