Granted Patent
Utility
US 6,166,390 · App. 09/123,979
Radiation shielding composition
Inventors:
William J. Quapp, Paul A. Lessing
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Jul 28, 1998
Inventors
William J. Quapp
Paul A. Lessing
Assignee (at issue)
Bechtel BWXT Idaho, LLC
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.