Granted Patent
Utility
US 4,979,893 · App. 07/312,799
Method of coating yttrium vanadate phosphors with Al.sub.2 O.sub.3
Inventors:
Romano G. Pappalardo, Thomas E. Peters, Roger B. Hunt, Jr.
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Feb 21, 1989
Inventors
Romano G. Pappalardo
Thomas E. Peters
Roger B. Hunt, Jr.
Assignee (at issue)
GTE Laboratories Incorporated
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.