Patents Assigned to SURF Technology AS
  • Patent number: 11491750
    Abstract: A manufacturing method contemplates performing vacuum-assisted resin infusion to enclose an elongated core within a cured composite laminate without employing a mold. Not relying upon an external mold enables the process to be efficiently performed for core shapes that are manufactured in low volumes. Typical resin infusion processes utilize flow media that induces bag bridging during vacuum draw in order to provide gaps facilitating resin flow. However, popular flow media also tends to impart directional aggregate forces during vacuum draw, which forces can deform the core since no mold is being used. To avoid unequal and non-dispersed directional forces from deforming the elongated core, a flow media is employed that is configured to disperse and/or reduce such forces. Some such flow media may be knitted so as to allow overlapping strands to slide over one another.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: November 8, 2022
    Assignee: VARIAL SURF TECHNOLOGY, INC.
    Inventors: Edison Conner, Parker Borneman
  • Patent number: 11280906
    Abstract: Estimation and imaging of linear and nonlinear propagation and scattering parameters in a material object where the material parameters for wave propagation and scattering has a nonlinear dependence on the wave field amplitude. The methods comprise transmitting at least two pulse complexes composed of co-propagating high frequency (HF) and low frequency (LF) pulses along at least one LF and HF transmit beam axis, where said HF pulse propagates close to the crest or trough of the LF pulse along at least one HF transmit beam, and where one of the amplitude and polarity of the LF pulse varies between at least two transmitted pulse complexes. At least one HF receive beam crosses the HF transmit beam at an angle >20 deg to provide at least two HF cross-beam receive signals from at least two transmitted pulse complexes with different LF pulses.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: March 22, 2022
    Assignee: SURF Technology AS
    Inventors: Bjorn A. J. Angelsen, Johannes Kvam
  • Patent number: 11275006
    Abstract: Methods and instrumentation for estimation of nonlinear bulk elasticity parameters (NEP) of a material through measuring nonlinear propagation delays (NPDs) at a set of multiple range cells along at least one transmit beam axis, and adapting said NEPs to minimize a functional of the NEPs. The method calculates a distance between a model of the NPDs with the NEPs as input and the measured NPDs, and estimated NEPs are obtained at the minimum of the functional. The NPDs are measured by transmitting at least two pulse complexes comprising a low frequency (LF) and a high frequency (HF) pulse with differences in the LF pulse, along at least one common LF and HF transmit beam axes, and gating out HF receive signals from a multitude of depth ranges along said at least one HF transmit beam axis, and comparing the HF receive signals from two pulse complexes with difference in the LF pulse for each depth range.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 15, 2022
    Assignee: SURF Technology AS
    Inventors: Bjorn A. J. Angelsen, Johannes Kvam, Stian Solberg
  • Patent number: 11209530
    Abstract: 1st and 2nd pulsed waves (103, 104) with 1st and 2nd center frequencies are transmitted along 1st and 2nd transmit beams so that the 1st and 2nd pulsed waves overlap at least in an overlap region (Z) to produce nonlinear interaction scattering sources in said region. The scattered signal components from at least the nonlinear interaction scattering sources are picked up by a receiver (102) and processed to suppress other components than said nonlinear interaction scattered signal components, to provide nonlinear interaction measurement or image signals. At least a receive beam is scanned in an azimuth or combined azimuth and elevation direction to produce 2D or 3D images of said nonlinear interaction scattering sources.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: December 28, 2021
    Assignee: SURF TECHNOLOGY AS
    Inventor: Bjørn Angelsen
  • Patent number: 11007686
    Abstract: An acoustic matching layer where the thickness is defined by a single layer of defined mono-disperse particles. The layer comprises a polymer base in which mono-disperse particles are embedded. The mono-disperse particles can be coated with a solid material that participates in the definition of the acoustic impedance of the layer. The polymer base can include smaller solid particles that participates in the definition of the acoustic impedance of the layer. The invention also provides a method of manufacturing.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: May 18, 2021
    Assignee: SURF TECHNOLOGY AS
    Inventor: Bjorn A. J. Angelsen
  • Patent number: 10879867
    Abstract: A structure of an acoustic transducer array probe for transmission of acoustic waves from a front radiation surface into an acoustic load material, where said acoustic waves can have frequencies in a high frequency (HF) band and further lower frequency (LF1, . . . , LFn, . . . , LFN) bands with N?1, arranged in order of decreasing center frequency. The acoustic waves are transmitted from separate high and lower frequency arrays stacked together with matching layers in a thickness dimension into a layered structure, with at least a common radiation surface for said high and lower frequency bands. At least for said common radiation surface at least one lower frequency LFn electro-acoustic structure (n=1, . . . , N) comprises a piezoelectric array with an acoustic isolation section to its front face.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: December 29, 2020
    Assignee: SURF Technology AS
    Inventors: Bjorn Atle Johan Angelsen, Ola Finneng Myhre
  • Patent number: 10578725
    Abstract: The invention presents methods and instrumentation for measurement or imaging of a region of an object with waves of a general nature, for example electromagnetic (EM) and elastic (EL) waves, where the material parameters for wave propagation and scattering in the object depend on the wave field strength. The invention specially addresses suppression of 3rd order multiple scattering noise, referred to as pulse reverberation noise, and also suppression of linear scattering components to enhanced signal components from nonlinear scattering. The pulse reverberation noise is divided into three classes where the invention specially addresses Class I and Class II 3rd order multiple scattering that are generated from the same three scatterers, but in opposite sequence.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: March 3, 2020
    Assignee: SURF Technology AS
    Inventors: Bjorn A. J. Angelsen, Thor Andreas Tangen
  • Patent number: 10556648
    Abstract: A water propulsion electric powered water recreation surf board with an integrated water propulsion jet to provide additional thrust for maneuvers and different selectable thrust levels as needed during the maneuver. The water propulsion electric powered water recreation surf board includes a body having an upper surface and bottom surface and a water propulsion system integrated into the body including a water inlet on the bottom surface, and a water propulsion nozzle and propeller on the upper surface. An electric motor connects to rotate propeller for drawing water into the propulsion system and expels a pressurized column of water through the water propulsion nozzle. A removable rechargeable battery is connected with the electric motor and a controller with a user control pad on the top surface of the body to allow the user to control the operation of the water propulsion system.
    Type: Grant
    Filed: July 29, 2018
    Date of Patent: February 11, 2020
    Assignee: Jetson Surf Technology, LLC
    Inventor: Inigo Barron
  • Patent number: 10310061
    Abstract: An ultrasound transducer array with at least one composite material layer. The layer having a polymer base in which polymer particles are embedded. The polymer particles are coated with a material that has a thermal conductivity that is higher than the thermal conductivity of the polymer base and the polymer particles.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 4, 2019
    Assignee: SURF Technology AS
    Inventor: Bjorn A. J. Angelsen
  • Patent number: 9939413
    Abstract: Measurement or imaging of elastic wave nonlinear scatterers with a memory of scattering parameters comprises selecting LF pulses having characteristics to change the scattering parameters of nonlinear scatterers. A transmit time relation is selected so that the incident HF pulse propagates sufficiently close to the LF pulse that the effect of the incident LF pulse on its scatterer parameters is observed by the HF pulse. At least two elastic wave pulse complexes comprising a high frequency (HF) pulse and a selected low frequency (LF) pulse are transmitted towards the region. Received HF signals are combined to form nonlinear HF signals representing the scatterers with memory, with suppression of received HF signals from other scatterers. At least one of the received HF signals may be corrected by time delay correction and/or speckle correction with a speckle correction filter, determined by movement of the scattering object. Systems are also disclosed.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 10, 2018
    Assignee: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Rune Hansen, Tonni F. Johansen, Svein-Erik Måsøy, Sven Peter Nasholm, Thor Andreas Tangen
  • Patent number: 9291493
    Abstract: The invention presents methods and instrumentation for measurement or imaging of a region of an object with waves of a general nature, for example electromagnetic (EM) and elastic (EL) waves, where the material parameters for wave propagation and scattering in the object depend on the wave field strength. The invention specially addresses suppression of 3rd order multiple scattering noise, referred to as pulse reverberation noise, and also suppression of linear scattering components to enhanced signal components from nonlinear scattering. The pulse reverberation noise is divided into three classes where the invention specially addresses Class I and Class II 3rd order multiple scattering that are generated from the same three scatterers, but in opposite sequence.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: March 22, 2016
    Assignee: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Thor Andreas Tangen
  • Patent number: 8793079
    Abstract: 1st and 2nd pulsed waves are transmitted along 1st and 2nd transmit beams where at least one of the beams is broad in at least one direction, and the transmit timing between said 1st and 2nd pulsed waves are selected so that the pulsed wave fronts overlap in an overlap region R(r,t) that propagates along at least one measurement or image curve ?(r) in the material object. At least the scattered signal produced by nonlinear interaction between said 1st and 2nd waves in the overlap region is received and processed to form a nonlinear interaction scattering image signal along ?(r). The measurement or image curve ?(r) can be scanned laterally by either changing of the relative transmit timing between the 1st and 2nd pulsed waves or the direction of at least one of the 1st and 2nd transmit beams, or both. The methods are applicable to image nonlinear scattering sources for both electromagnetic and elastic waves, and combinations of these.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: July 29, 2014
    Assignee: Surf Technology AS
    Inventors: Bjørn A. J. Angelsen, Rune Hansen, Thor Andreas Tangen
  • Publication number: 20140135681
    Abstract: A method and instrumentation for ultrasound mediated delivery of drugs to diseased tissue use ultrasound beams with frequency and focusing that provides an ultrasound radiation force acting on the drug and surrounding fluid, which produces a convection of drugs and compensates for the lack of a pressure gradient. To manipulate drug encapsulations and also stimulate transport of drugs across biological membranes, like the cell membrane or the blood brain barrier, the method and instrumentation use low frequency beams with high mechanical index. The method and instrumentation additionally uses ultrasound heating of the tissue to increase blood flow and manipulate thermally sensitive particles.
    Type: Application
    Filed: September 5, 2013
    Publication date: May 15, 2014
    Applicant: Surf Technology AS
    Inventor: Bjorn A. J. ANGELSEN
  • Publication number: 20130279294
    Abstract: The invention presents methods and instrumentation for measurement or imaging of a region of an object with waves of a general nature, for example electromagnetic (EM) and elastic (EL) waves, where the material parameters for wave propagation and scattering in the object depend on the wave field strength. The invention specially addresses suppression of 3rd order multiple scattering noise, referred to as pulse reverberation noise, and also suppression of linear scattering components to enhanced signal components from nonlinear scattering. The pulse reverberation noise is divided into three classes where the invention specially addresses Class I and Class II 3rd order multiple scattering that are generated from the same three scatterers, but in opposite sequence.
    Type: Application
    Filed: October 3, 2012
    Publication date: October 24, 2013
    Applicant: SURF Technology AS
    Inventor: SURF Technology AS
  • Publication number: 20120287757
    Abstract: Methods and instrumentation for detecting and representing at least one geologic formation in front of an operating drill-bit using the vibration noise generated by the operating drill-bit as a source, comprising at least one receive array comprising more than one receive vibration sensor elements, said at least one receive array are located in one or both of i) at least one receive well, and ii) submerged in water for sub-sea operation, and beam forming at least one receive signal from the signals from said more than one receive elements of said at least one receive array, and forming at least one reference signal representing the vibrations of the operating drill-bit, and correlating said at least one receive signal with said at least one reference signal with different correlation lags, and forming a seismic representation of the at least one geologic formation in front of the drill-bit through said correlating.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 15, 2012
    Applicant: SURF Technology AS
    Inventors: Bjørn A. J. ANGELSEN, Erling FJÆR, Ketil Bø
  • Patent number: 8182428
    Abstract: An acoustic probe transmits/receives acoustic pulses with frequencies both in a high frequency (HF), and a selectable amount of lower frequency (LF1, LF2, . . . , LFn, . . . ) bands. The radiation surfaces of at least two of the multiple frequency bands have a common region. The arrays and elements can be of a general type such as annular arrays, phased or switched arrays, linear arrays with division in both azimuth and elevation direction, like a 1.5D, a 1.75D and a full 2D array, or curved arrays. The element division, array type, and array aperture sizes for the different bands can also be different.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 22, 2012
    Assignee: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Tonni F. Johansen, Rune Hansen, Sven Peter Nasholm, Svein-Erik Måsøy
  • Publication number: 20120095699
    Abstract: 1st and 2nd pulsed waves are transmitted along 1st and 2nd transmit beams where at least one of the beams is broad in at least one direction, and the transmit timing between said 1st and 2nd pulsed waves are selected so that the pulsed wave fronts overlap in an overlap region R(r,t) that propagates along at least one measurement or image curve ?(r) in the material object. At least the scattered signal produced by nonlinear interaction between said 1st and 2nd waves in the overlap region is received and processed to form a nonlinear interaction scattering image signal along ?(r). The measurement or image curve ?(r) can be scanned laterally by either changing of the relative transmit timing between the 1st and 2nd pulsed waves or the direction of at least one of the 1st and 2nd transmit beams, or both. The methods are applicable to image nonlinear scattering sources for both electromagnetic and elastic waves, and combinations of these.
    Type: Application
    Filed: August 19, 2011
    Publication date: April 19, 2012
    Applicant: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Rune Hansen, Thor Andreas Tangen
  • Patent number: 8157739
    Abstract: A method and an instrument for ultrasound imaging using an array of transducer elements which is connected to the instrument with a limited number of wires, where focusing of the transmit beam improves image signal to noise ratio above state of the art methods. This allows the use of higher ultrasound frequencies providing improved image resolution.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: April 17, 2012
    Assignee: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Tonni F. Johansen
  • Patent number: 8137280
    Abstract: A digital ultrasound beam former for ultrasound imaging, that can be configured by a control processor to process the signals from ultrasound transducer arrays with variable number of elements at variable sampling frequencies, where the lowest sampling frequency allows for the highest number of array elements. The maximal number of array elements is reduced in the inverse proportion to the sampling frequency. The beam former can be operated both in a RF-sampling mode and a quadrature mode. Parallel coupling of transmit/receive circuits for each element allow adaption of the receive Noise Figure and transmit drive capabilities to variations in the electrical impedance of the array elements.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: March 20, 2012
    Assignee: SURF Technology AS
    Inventors: Bjøm A. J. Angelsen, Tonni F. Johansen
  • Patent number: 8038616
    Abstract: Methods of acoustic imaging provide images with reduced reverberation noise and images of nonlinear scattering and propagation parameters of the object, and estimation methods of corrections for wave front aberrations produced by spatial variations in the acoustic propagation velocity. The methods are based on processing of the received signal from transmitted dual frequency band acoustic pulse complexes with overlapping high and low frequency pulses. The high frequency pulse is used for the image reconstruction and the low frequency pulse is used to manipulate the nonlinear scattering and/or propagation properties of the high frequency pulse. Through filtering in the pulse number coordinate and corrections for nonlinear propagation delays and optionally also amplitudes, a linear back scattering signal with suppressed pulse reverberation noise, a nonlinear back scattering signal, and quantitative nonlinear forward propagation and scattering parameters are extracted.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: October 18, 2011
    Assignee: SURF Technology AS
    Inventors: Bjørn A. J. Angelsen, Rune Hansen, Øyvind Krovel-Velle Standal