Patents by Inventor Atticus N. Tysen

Atticus N. Tysen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Message protection mechanism and graphical user interface therefor
    Patent number: 5497422
    Abstract: A digitally signed message, protected with a chain of certificates from the sender's immediate certifier up through an ultimate certifier, is transmitted to a recipient together with the entire certificate chain. The entire certificate chain is stored in a single signer file accessible by the sender. Drag-and-drop gestures of a graphical user interface are used by the sender to sign and certify the message, and an icon is provided on the recipient's display to initiate verification.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: March 5, 1996
    Assignee: Apple Computer, Inc.
    Inventors: Atticus N. Tysen, Gursharan Sidhu, C. Victor Chang, Pablo Calamera