Granted Patent
Utility
US 4,925,702 · App. 07/416,199
Process for improving the luminescence and bulk density of niobium activated yttrium tantalate X-ray phosphor
Inventor:
Vaddi B. Reddy
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Oct 2, 1989
Inventor
Vaddi B. Reddy
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.