Granted Patent
Utility
US 6,149,839 · App. 09/322,542
Cation-treated silicate phosphor
Inventors:
Anthony Diaz, Charles F. Chenot, Shelley A. Sonner
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: May 28, 1999
Inventors
Anthony Diaz
Charles F. Chenot
Shelley A. Sonner
Assignee (at issue)
OSRAM SYLVANIA Inc.
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.