Patents by Inventor Jostein Jacobsen
Jostein Jacobsen 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).
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Patent number: 8677823Abstract: An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.Type: GrantFiled: January 14, 2011Date of Patent: March 25, 2014Assignee: Halfwave ASInventors: Age A. Olsen, Jostein Jacobsen, Tore Magne Halas Skar, Petter Norli, Ashild Bergh, Nils-Otto Negard, Steinar Lag
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Patent number: 8061205Abstract: An acoustic method and apparatus detects or characterizes a medium in a structure which may be a container, such as a pipeline for transportation of oil, gas, or hydrocarbon condensate. A pulse of broadband acoustic energy is emitted towards the structure by a first transducer. A return signal is generating by a second transducer from acoustic energy returned from the structure in response to the emission of acoustic energy. A return signal spectrum representing acoustic spectral components of the acoustic energy returned from the structure is derived from the return signal, and the medium is detected or characterized by applying a return signal processing medium detection or characterization algorithm to the return signal spectrum.Type: GrantFiled: April 25, 2007Date of Patent: November 22, 2011Assignee: Det Norske Veritas ASInventors: Jostein Jacobsen, Åshild Bergh, Ståle Vilming
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Patent number: 8011227Abstract: An apparatus and a method for determining a moisture ingress in an insulating layer surrounding a pipe, the insulating layer being surrounded by a tubular jacket. The apparatus includes an acoustic transducer in communication with an exciter adapted to provide a brief and broad banded acoustic signal which includes frequencies which by their propagation in the material of the jacket has a wavelength which corresponds to twice the thickness of the jacket or an odd multiple of twice the thickness of the jacket, and to process a reverberation signal emitted from the jacket in response to sending into the jacket the brief and broad banded output signal from the transducer.Type: GrantFiled: September 12, 2008Date of Patent: September 6, 2011Assignee: Det Norske Veritas ASInventors: Åge A. Olsen, Jostein Jacobsen, Tore Magne Halås Skar, Petter Norli, Ashild Bergh, Nils-Otto Negård, Steinar Låg
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Patent number: 7975548Abstract: An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.Type: GrantFiled: September 12, 2008Date of Patent: July 12, 2011Assignee: Det Norske Veritas ASInventors: Åge A. Olsen, Jostein Jacobsen, Tore Magne Halås Skar, Petter Norli, Ashild Bergh, Nils-Otto Negård, Steinar Låg
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Publication number: 20110106493Abstract: An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.Type: ApplicationFiled: January 14, 2011Publication date: May 5, 2011Applicant: DET NORSKE VERITAS ASInventors: AGE A. OLSEN, Jostein Jacobsen, Tore Magne Halås Skar, Petter Norli, Ashild Bergh, Nils-Otto Negård, Steinar Låg
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Publication number: 20090308161Abstract: An acoustic method and apparatus detects or characterizes a medium in a structure which may be a container, such as a pipeline for transportation of oil, gas, or hydrocarbon condensate. A pulse of broadband acoustic energy is emitted towards the structure by a first transducer. A return signal is generating by a second transducer from acoustic energy returned from the structure in response to the emission of acoustic energy. A return signal spectrum representing acoustic spectral components of the acoustic energy returned from the structure is derived from the return signal, and the medium is detected or characterized by applying a return signal processing medium detection or characterization algorithm to the return signal spectrum.Type: ApplicationFiled: April 25, 2007Publication date: December 17, 2009Applicant: DET NORSKE VERITAS ASInventors: Jostein Jacobsen, Ashild Bergh, Stale Vilming
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Publication number: 20090071253Abstract: An acoustic apparatus adapted to operate in a gas filled space from a first side of an object to be measured for making a non-contact thickness measurement thereof includes an electro acoustic transducer, a transceiver coupled with the electro acoustic transducer and adapted to excite electro acoustic transducer to output an acoustic signal towards the object to be measured and receive an acoustic response signal therefrom, and a signal processor adapted to process the response signal and determine a thickness of the object. The electroacoustic transducer has a transducer-to-gas acoustic interface, and the transceiver is adapted to operate the electroacoustic transducer so as to emit into a gas filled gap an acoustic broad band pulse towards the object and to receive an acoustic resonance response signal in the acoustic response signal at a level that allows acquisition of the resonance response signal above a predetermined signal to noise level.Type: ApplicationFiled: September 12, 2008Publication date: March 19, 2009Applicant: DET NORSKE VERITAS ASInventors: Age A. Olsen, Jostein Jacobsen, Tore Magne Halas Skar, Petter Norli, Ashild Bergh, Nils-Otto Negard, Steinar Lag
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Publication number: 20090064770Abstract: An apparatus and a method for determining a moisture ingress in an insulating layer surrounding a pipe, the insulating layer being surrounded by a tubular jacket. The apparatus includes an acoustic transducer in communication with an exciter adapted to provide a brief and broad banded acoustic signal which includes frequencies which by their propagation in the material of the jacket has a wavelength which corresponds to twice the thickness of the jacket or an odd multiple of twice the thickness of the jacket, and to process a reverberation signal emitted from the jacket in response to sending into the jacket the brief and broad banded output signal from the transducer.Type: ApplicationFiled: September 12, 2008Publication date: March 12, 2009Applicant: DET NORSKE VERITAS ASInventors: Age A. Olsen, Jostein Jacobsen, Tore Magne Halas Skar, Petter Norli, Ashild Bergh, Nils-Otto Negard, Steinar Lag
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Patent number: 6763720Abstract: The invention provides a system for measuring, characterizing, verifying and position-determining material properties of a selected object to be measured, in particular thickness distribution. A mobile measuring unit which is manouvered and operated manually or with the aid of a remote-control transport device senses half-wave resonance in objects to be measured and computes the thickness distribution. A new, accurate, partly acoustic positioning system determines the position of the measured area.Type: GrantFiled: November 20, 2001Date of Patent: July 20, 2004Assignee: Det Norske Veritas ASInventors: Jostein Jacobsen, Odd Torset, Øyvind Lund-Johansen, Knut T. Skaar, Magne Ivar Steinset, Arild Søraunet