Patents by Inventor Romeo D. Del Rosario, Jr.

Romeo D. Del Rosario, Jr. 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).

  • Ferroelectric-tunable microwave branching couplers
    Patent number: 6335662
    Abstract: The invention discloses the utilization of various transmission lines that entail a ferroelectric material as dielectric substrate to introduce an impedance shift by means of an externally applied d.c. bias, which alters the effective length between the input and output signals of the transmission lines of microwave couplers.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: January 1, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Romeo D. Del Rosario, Jr., Steven C. Tidrow