Granted Patent
Utility
US 5,850,443 · App. 08/698,074
Key management system for mixed-trust environments
Inventors:
Paul C. Van Oorschot, Michael Wiener
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: Aug 15, 1996
Inventors
Paul C. Van Oorschot
Michael Wiener
Assignee (at issue)
Entrust Technologies Limited
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.