Granted Patent
Utility
US 5,938,974 · App. 09/150,916
Yttrium tantalate x-ray phosphors with reduced persistence
Inventors:
Gregory A. Marking, Vaddi B. Reddy
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Sep 10, 1998
Inventors
Gregory A. Marking
Vaddi B. Reddy
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.