Granted Patent
Utility
US 5,355,474 · App. 07/767,258
System for multilevel secure database management using a knowledge base with release-based and other security constraints for query, response and update modification
Inventors:
Bhavani M. Thuraisngham, William R. Ford, Jr., Marie S. Collins, Jonathan O'Keeffe
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Sep 27, 1991
Inventors
Bhavani M. Thuraisngham
William R. Ford, Jr.
Marie S. Collins
Jonathan O'Keeffe
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.