Patents by Inventor Margarete A. Ralston

Margarete A. Ralston 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).

  • Architecture and method for providing interactive broadband products and services using existing telephone plant
    Patent number: 5857142
    Abstract: An architecture for providing interactive broadband products and services uses existing cable and telephone plant. The architecture includes a central office switch in communication with a head-end server and a Customer Premises Equipment (CPE) device such as, for example, a modem emulator, data terminal, set-top terminal or personal computer. The CPE device is provided in communication with the head-end server via cable plant for downstream broadcasts and is further provided in communication with a central office switch via telephone plant for upstream signaling and downstream control messages.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: January 5, 1999
    Assignees: MediaOne Group, Inc., US West, Inc.
    Inventors: K. David Lin, Louis Anthony Cox, Jr., James H. Starr, Margarete A. Ralston, Stephen Bulick, Gregory J. Beveridge
  • Broadband diamond-shaped antenna
    Patent number: 4485385
    Abstract: A broadband antenna features a diamond-shaped radiator. The radiator can be bent to form a selected dihedral angle to achieve omnidirectivity when a plurality of antennas having reflector screens are used. Two pairs of radiators can be placed in the turnstile configuration. A pair of shorted tubes can be used as a combination feed means and balun to avoid a separate balun.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: November 27, 1984
    Assignee: RCA Corporation
    Inventor: Margarete A. Ralston