Patents by Inventor Richard A. Greulich

Richard A. Greulich 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-mode communications cable having a coaxial cable with twisted electrical conductors and optical fibers
    Patent number: 5418878
    Abstract: A cable system having a coaxial cable and a plurality of twisted wire pairs and optical fibers has the capacity to carry a broad range of telephonic, video and demodulated data signal information in addition to optical signals. The cable is suitable for long distance telephonic, video and optical signals as well as transmitting signals directly into the home or office of an end user. In addition, the cable is suitable for use in local all-optical networks and for long distance and broad network all-optical cable systems of the future.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: May 23, 1995
    Assignee: Metropolitan Communication Authority, Inc.
    Inventors: Richard G. Sass, Richard A. Greulich, F. Paul Carlson