Granted Patent
Utility
US 5,043,878 · App. 07/393,039
System with real-time checking of privilege levels and the system's state to allow access to internal resources of the system
Inventor:
Yasushi Ooi
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Aug 9, 1989
Inventor
Yasushi Ooi
Assignee (at issue)
NEC 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.