Patents by Inventor Dragoslav Grbovic

Dragoslav Grbovic 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).

  • Publication number: 20200185121
    Abstract: A composite material with enhanced electrical conductivity. The composite material includes two distinct phases. The first distinct phase is an excluded volume phase that includes an electrical insulator. The second distinct phase, a conductor phase, is a composite including an electrically insulating matrix and an embedded conductor phase that has sufficient concentration to exceed a percolation threshold within the conductor phase.
    Type: Application
    Filed: October 4, 2019
    Publication date: June 11, 2020
    Applicant: The United States of America, as represented by the Secretary of the Navy
    Inventors: Claudia Catalina Luhrs, Dragoslav Grbovic, Jonathan Phillips, Brian Christopher Earp
  • Publication number: 20170261377
    Abstract: Bi-material terahertz (THz) sensors with metamaterial structures are described. In one embodiment, MEMS fabrication-friendly SiOx and Al are used to maximize the bi-material effect and metamaterial absorption at 3.8 THz, the frequency of a quantum cascade laser illumination source. Sensors with different configurations were fabricated and the measured absorption is near 100% and responsivity is around 1.2 deg/?W. Fabrication and use of the sensors in focal plane arrays for real time THz imaging is described. In a further embodiment, the metamaterial structure is utilized as a THz emitter when heated by an external source.
    Type: Application
    Filed: December 22, 2015
    Publication date: September 14, 2017
    Inventors: Fabio D. ALVES, Dragoslav GRBOVIC, Gamani KARUNASIRI
  • Patent number: 8525393
    Abstract: A bimaterial microelectromechanical system (MEMS) solar power generator device converts radiant energy received from the sun, or other light source, into heat, which is then used to produce electricity through the piezoelectric effect. As the efficiency of piezoelectric materials can often reach up to 90%, the efficiency is greater than that of conventional solar cells.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: September 3, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Dragoslav Grbovic, Sebastian Osswald
  • Patent number: 6873257
    Abstract: A position locating device for identifying the distance and direction from a first object located with a user to a second object. The first object transmits a signal to the second object. The second object returns a signal to the first object. Microphones are arranged around the first object such that the time at which a microphone receives the returned signal is related to the direction of the second object relative to the first object. A receiver located at the first object decodes and analyzes the signal and its intensity to determine the distance of the second object.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: March 29, 2005
    Inventors: Craig Maloney, Dragoslav Grbovic
  • Publication number: 20040066293
    Abstract: A position locating device for identifying the distance and direction from a first object located with a user to a second object. The first object transmits a signal to the second object. The second object returns a signal to the first object. Microphones are arranged around the first object such that the time at which a microphone receives the returned signal is related to the direction of the second object relative to the first object. A receiver located at the first object decodes and analyzes the signal and its intensity to determine the distance of the second object.
    Type: Application
    Filed: July 1, 2003
    Publication date: April 8, 2004
    Inventors: Craig Maloney, Dragoslav Grbovic