Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and device for protecting software delivered to a user by a supplier

Method and device for protecting software delivered to a user by a supplier

US Patent 4683553 · Granted Jul 28, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Process and apparatus for authenticating the signature of a signed message1987
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