Granted Patent
Utility
US 5,051,277 · App. 07/468,432
Method of forming a protective bi-layer coating on phosphore particles
Inventors:
A. Gary Sigai, Keith A. Klinedinst
Patented Case
View Patent ↗
Granted: Sep 24, 1991
Filed: Jan 22, 1990
Inventors
A. Gary Sigai
Keith A. Klinedinst
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.