Patents by Inventor Niels Portzgen

Niels Portzgen 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
  • Method and apparatus for examining the interior material of an object, such as a pipeline or a human body from a surface of the object using ultrasound
    Patent number: 7650789
    Abstract: A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflections and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at different points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: January 26, 2010
    Assignees: Rontgen Technische Dienst B.V., Technische Universiteit Delft
    Inventors: Niels Pörtzgen, Andries Gisolf
  • 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
  • Method and Apparatus for Examining the Interior Material of an Object, Such as a Pipeline or a Human Body From a Surface of the Object Using Ultrasound
    Publication number: 20070277611
    Abstract: A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflections and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at different points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.
    Type: Application
    Filed: January 14, 2005
    Publication date: December 6, 2007
    Inventors: Niels Portzgen, Andries Gisolf