Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Public key data communications system under control of a portable security device

Public key data communications system under control of a portable security device

US Patent 5604801 · Granted Feb 18, 1997

Estimated economic value: $16,348,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Transforming a legacy IT infrastructure into an on-demand operating environment2014
Determining the progress of adoption and alignment of information technology cap2013
Method, system and apparatus for ensuring a uniform distribution in key generati2009
Time stamping method employing multiple receipts linked by a nonce2009
Time stamping method employing user specified time2009
Time stamping method employing a separate ticket and stub2009
Time stamping method employing a separate ticket and stub2008
Secure software distribution and installation2006
Secure data storage and retrieval in a client-server environment2006
Time stamping method using aged time stamp receipts2006
Time stamping method using time-based signature key2005
Secure data storage and retrieval with key management and user authentication2005