Granted Patent
Utility
US 5,154,852 · App. 07/794,099
Method of making lanthanum cerium terbium gadolinium phosphate phosphor
Inventor:
Chung-Nin Chau
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Nov 18, 1991
Inventor
Chung-Nin Chau
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.