Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process and apparatus for authenticating the signature of a signed message

Process and apparatus for authenticating the signature of a signed message

US Patent 4656474 · Granted Apr 7, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and system for writing information in a data carrier making it possible t1998
Process for authentication, by an outside medium, of a portable object connected1993
Method and device for protecting software delivered to a user by a supplier1987
Method for certifying the origin of at least one item of information stored in t1985
Method for certifying the origin of at least one item of information stored in t1985
Process and system for transmission of signed messages1984
Apparatus for and method of recycling recording carriers, such as credit cards, 1984
System for keeping account of predetermined homogeneous units1983
Method of and apparatus for inscribing a control character in a memory1982
Method of and apparatus for testing a memory matrix control character1982
System for keeping account of predetermined homogeneous units1981
System for keeping account of predetermined homogenous units1980