Granted Patent
Utility
US 5,009,808 · App. 07/462,922
Process for producing electroluminescent yellow zinc sulfide phosphors
Inventors:
Kenneth T. Reilly, Richard G. W. Gingerich, Christopher Poss
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Jan 11, 1990
Inventors
Kenneth T. Reilly
Richard G. W. Gingerich
Christopher Poss
Assignee (at issue)
GTE Products Corporation
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.