Granted Patent
Utility
US 4,956,202 · App. 07/427,654
Firing and milling method for producing a manganese activated zinc silicate phosphor
Inventors:
Anthony F. Kasenga, A. Gary Sigai, Thomas E. Peters, Roger B. Hunt, Jr.
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Oct 27, 1989
Inventors
Anthony F. Kasenga
A. Gary Sigai
Thomas E. Peters
Roger B. Hunt, Jr.
Assignees (at issue)
GTE Products Corporation
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.