Patents by Inventor William Stein, IV

William Stein, IV 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).

  • Device for protecting data transmitted by a facsimile machine
    Patent number: 6297892
    Abstract: The invention relates to a device for protecting data transmitted by a facsimile machine and provides for encrypting and decrypting of data converted to a binary code. The device is detachably connectable to a facsimile machine for receiving the data and for encrypting/decrypting the data in accordance with a pre-selected key. The encrypted data is stored by the device for subsequent retrieval upon demand. A keypad and an associated visual display allow programming of the electronic function of the device.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 2, 2001
    Inventors: William Stein, III, William Stein, IV