Granted Patent
Utility
US 6,426,115 · App. 09/570,965
Method for making high-efficacy and long life electroluminescent phosphor
Inventors:
Chen-Wen Fan, Richard G. W. Gingerich, Dale E. Benjamin
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: May 15, 2000
Inventors
Chen-Wen Fan
Richard G. W. Gingerich
Dale E. Benjamin
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.