Patents by Inventor Stuart E. Higley

Stuart E. Higley 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).

  • Secure fiber optic networks
    Patent number: 5422772
    Abstract: Sagnac interferometer based secure communications systems are integrated into high speed data transfer rate networks using a smaller number of separate fiber optic cables than would be required if networks were constructed from pluralities of point-to-point systems. Redundancy can be provided in the networks to enable the network to operate even if multiple failures occur in the network.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: June 6, 1995
    Assignee: McDonnell Douglas Corporation
    Inventors: Eric Udd, Stuart E. Higley