Granted Patent
Utility
US 5,559,889 · App. 08/414,852
System and methods for data encryption using public key cryptography
Inventors:
Randall J. Easter, William A. Merz
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Mar 31, 1995
Inventors
Randall J. Easter
William A. Merz
Assignee (at issue)
International Business Machines 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.