Patents by Inventor Khalid Chougrani

Khalid Chougrani 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).

  • Technique and phased array transducer for ultrasonic inspection of coarse grained, anisotropic welds
    Patent number: 7913563
    Abstract: A transducer for generating acoustic waves more particularly for generating compression waves, comprising an array of transmitter elements and an array of receiver elements, at least one wedge for the array of transmitter elements and the array of receiver elements and preferably an acoustical barrier separating the array of transmitter elements and the array of receiver elements. The pitch of the transmitter array varies along the length of the transmitter array.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 29, 2011
    Assignee: Röntgen Technische Dienst B.V.
    Inventors: Frederik Hendrik Dijkstra, Khalid Chougrani, Niels Pörtzgen, Cezar Justino Buque
  • System and method for inspecting a pipeline with ultrasound
    Patent number: 7900517
    Abstract: A system for inspecting a pipeline with ultrasound, provided with a transport device arranged to move in a transport direction through the pipeline, a plurality of transducers and a transmitting and receiving device connected with the transducers. The transducers and the transmitting and receiving device are mounted on the transport device. The transducers are provided with a first set of transducers, a second set of transducers and a third set of transducers. The system is arranged to move the first set of transducers, the second set of transducers and the third set of transducers in a tangential direction with respect to the transport direction along an interior wall of the pipeline. The system is arranged to bring the transducers of the first set, the second set and the third set into contact with the interior wall of the pipeline during the performance of a measurement.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: March 8, 2011
    Assignee: Rontgen Technische Dienst B.V.
    Inventors: Khalid Chougrani, Frederik Hendrik Dijkstra, Cesar Justino Buque, Robert van Agthoven
  • Method for ultrasonic inspecting a substantially circumferential weld and an apparatus for carrying out such method
    Publication number: 20110000302
    Abstract: A method for ultrasonic inspecting a substantially circular circumferential weld which connects an inner pipe and an outer pipe which are aligned coaxial relative to each other, the method comprising the steps of: a) positioning at least one ultrasonic probe inside the inner pipe; b) moving the at least one probe in tangential direction relative to the inner pipe a while emitting at least one ultrasonic beam towards the weld and receiving ultrasonic signals by means of the at least one probe.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 6, 2011
    Inventors: Xavier Georges Jose Deleye, Frederik Hendrik Dijkstra, Khalid Chougrani, Adrianus Maria Cornelius Van Den Biggelaar, Hubertus Rundberg
  • System and method for inspecting a pipeline with ultrasound
    Publication number: 20100313665
    Abstract: A system for inspecting a pipeline with ultrasound, provided with a transport device arranged to move in a transport direction through the pipeline, a plurality of transducers and a transmitting and receiving device connected with the transducers. The transducers and the transmitting and receiving device are mounted on the transport device. The transducers are provided with a first set of transducers, a second set of transducers and a third set of transducers. The system is arranged to move the first set of transducers, the second set of transducers and the third set of transducers in a tangential direction with respect to the transport direction along an interior wall of the pipeline. The system is arranged to bring the transducers of the first set, the second set and the third set into contact with the interior wall of the pipeline during the performance of a measurement.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 16, 2010
    Inventors: Khalid Chougrani, Frederik Hendrik Dijkstra, Cesar Justino Buque, Robert van Agthoven
  • Technique and phased array transducer for ultrasonic inspection of coarse grained, anisotropic welds
    Publication number: 20080289425
    Abstract: A transducer for generating acoustic waves more particularly for generating compression waves, comprising an array of transmitter elements and an array of receiver elements, at least one wedge for the array of transmitter elements and the array of receiver elements and preferably an acoustical barrier separating the array of transmitter elements and the array of receiver elements. The pitch of the transmitter array varies along the length of the transmitter array.
    Type: Application
    Filed: January 25, 2008
    Publication date: November 27, 2008
    Inventors: Frederik Hendrik Dijkstra, Khalid Chougrani, Niels Portzgen, Cezar Justino Buque