Patents by Inventor Borislav B. Djordjevic

Borislav B. Djordjevic 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).

  • Patent number: 9297789
    Abstract: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: March 29, 2016
    Inventors: Borislav B. Djordjevic, Lawrence L. Rouch
  • Publication number: 20130260469
    Abstract: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements.
    Type: Application
    Filed: September 20, 2012
    Publication date: October 3, 2013
    Applicant: Materials And Sensors Technologies, Inc.
    Inventors: Borislav B. DJORDJEVIC, Lawrence L. Rouch
  • Patent number: 8291744
    Abstract: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: October 23, 2012
    Assignee: Materials and Sensors Technologies, Inc.
    Inventors: Borislav B. Djordjevic, Lawrence L. Rouch
  • Publication number: 20090314088
    Abstract: The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 24, 2009
    Applicant: MATERIALS AND SENSORS TECHNOLOGIES, INC.
    Inventors: Borislav B. Djordjevic, Lawrence L. Rouch
  • Patent number: 4507969
    Abstract: An ultrasonic liquid jet probe for coupling ultrasonic waves with a structure. The probe includes an ultrasonic transducer for emitting or receiving ultrasonic waves, a housing disposed about the transducer and in fluid communication with a source of liquid under pressure, and a nozzle for shaping the flow of liquid into a round jet column and guiding the ultrasonic waves between the transducer and the liquid jet column. The interior of the housing includes first and second chambers fluidly connected by elongated conduits to impart a substantially laminar flow to the liquid flowing into the nozzle which promotes the stability of the liquid jet column discharged from the nozzle.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: April 2, 1985
    Assignee: Martin Marietta Corporation
    Inventors: Borislav B. Djordjevic, Stephen C. Traugott