Patents by Inventor Mark S. Sitzwohl

Mark S. Sitzwohl 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).

  • Multi-user access control for a sensitive system
    Patent number: 10445478
    Abstract: A multi-user access control device provides controlled access to a sensitive system by enabling/disabling an input/output port in communication with said sensitive system. Tokens are held by users and provide for confirmation of group membership and authentication. Upon authentication of the users, an enable signal is provided to a relay providing power to an external port. The external port may provide power to an input/output device allowing the user to interact with the sensitive system. The external port may provide power to a network port of the access control device allowing for management of the access control device or allowing for auditing of the access control device.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: October 15, 2019
    Assignee: Government of the United States, as represented by Director, National Security Agency
    Inventors: Daniel M. Barrick, Raul Grajales, III, Brian S. McGarvey, Mark S. Sitzwohl, William Paul F. Wright