Patents by Inventor Dag Wang
Dag Wang 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: 11240607Abstract: An optical microphone assembly comprises a rigid substrate; an interferometric arrangement, a light source, at least one photo detector and an enclosure. The interferometric arrangement comprises a membrane and at least one optical element spaced from the membrane, wherein the at least one optical element comprises a surface of the substrate and/or is disposed on a surface of the substrate. The light source is arranged to provide light to the interferometric arrangement such that a first portion of the light propagates along a first optical path via the interferometric arrangement and a second portion of the light propagates along a second different optical path via the interferometric arrangement, thereby giving rise to an optical path difference between the first and second optical paths which depends on a distance between the membrane and the optical element.Type: GrantFiled: May 15, 2019Date of Patent: February 1, 2022Assignee: SINTEF TTO ASInventors: Hallvard Angelskår, Thor Bakke, Ib-Rune Johansen, Matthieu Lacolle, Jakob Vennerød, Andreas Vogl, Dag Wang
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Publication number: 20210274291Abstract: An optical microphone assembly comprises a rigid substrate; an interferometric arrangement, a light source, at least one photo detector and an enclosure. The interferometric arrangement comprises a membrane and at least one optical element spaced from the membrane, wherein the at least one optical element comprises a surface of the substrate and/or is disposed on a surface of the substrate. The light source is arranged to provide light to the interferometric arrangement such that a first portion of the light propagates along a first optical path via the interferometric arrangement and a second portion of the light propagates along a second different optical path via the interferometric arrangement, thereby giving rise to an optical path difference between the first and second optical paths which depends on a distance between the membrane and the optical element.Type: ApplicationFiled: May 15, 2019Publication date: September 2, 2021Inventors: Hallvard Angelskår, Thor Bakke, Ib-Rune Johansen, Matthieu Lacolle, Jakob Vennerød, Andreas Vogl, Dag Wang
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Publication number: 20200056954Abstract: An overpressure protection system and methods of using the same are provided. The overpressure protection system can include at least two limiting diaphragms in fluid communication with corresponding overpressure diaphragms. Each limiting diaphragm can be configured to transmit pressure exerted by different fluid environments to their corresponding overpressure diaphragm. Each overpressure diaphragm can include a pre-tensioned diaphragm seal configured to allow transmission of pressures to a differential pressure sensing element, allowing measurement of a differential pressure between the different fluid environments. When pressure transmitted to an overpressure diaphragm reaches a pre-defined limit, the pre-tensioned diaphragm can inhibit transmission of further pressure increases to the differential pressure sensing element.Type: ApplicationFiled: May 1, 2018Publication date: February 20, 2020Inventors: Dag WANG, Bjorn Erik SEEBERG, Christian NOMME
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Publication number: 20070245840Abstract: The present invention comprises an apparatus and a method for mass analyses of an array of samples contained in distinct sample holders. The sample holders are placed on a plurality of sensors which preferably comprise an array of microbalances providing output signals comprising mass data on the array of samples.Type: ApplicationFiled: June 25, 2007Publication date: October 25, 2007Inventors: Rune Wendelbo, Duncan Akporiaye, Arne Karlsson, Ib-Rune Johansen, Ivar Dahl, Britta Fismen, Richard Blom, Dag Wang, Morten Gulliksen, Martin Plassen
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Publication number: 20070063852Abstract: The invention relates to an identification chip for insertion in an object located in a liquid. The identification chip comprises an acoustic resonator (100), which exhibits a number of distinct resonant frequencies, where the combination of resonant frequencies is unique to the identification chip. This enables the identification chip to be identified by exposing it to an acoustic polling signal, measuring an acoustic response signal and analysing the frequency of the response signal. The resonator (100) comprises a cavity-forming part (110, 120) and a membrane (130). The acoustic resonant frequencies are determined by at least one cavity (140), which is enclosed by the cavity-forming part (110, 120) and the membrane (140). The identification chip can be implanted in a fish, with the object of identifying the fish when it is located in water.Type: ApplicationFiled: November 27, 2002Publication date: March 22, 2007Inventors: John Brungot, Lars Hoff, Sverro Holm, Arne Ronneklelv, Dag Wang, Ralph Bornsteln
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Patent number: 7184368Abstract: The invention relates an optical displacement sensor element comprising two essentially flat surfaces (1,2) being separated by a cavity defined by a spacer (5) and the surfaces (1,2), the distance between the surfaces being variable, wherein a first of said surfaces (1) is positioned on an at least partially transparent carrier (3) and being provided with a reflective pattern, the pattern constituting a pattern being shaped as a diffractive lens, and said second surface (2) being a reflective surface.Type: GrantFiled: November 13, 2002Date of Patent: February 27, 2007Assignee: Sinvent ASInventors: Ib-Rune Johansen, Olav Solgaard, Odd Løvhaugen, Håkon Sagberg, Henrik Rogne, Dag Wang
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Patent number: 7164479Abstract: This invention relates to an optical displacement sensor element, e.g. for use in a pressure sensor or a microphone, comprising two essentially flat surfaces being separated by a cavity being defined by a spacer, the distance between the surfaces being variable thus providing a displacement sensitive Fabry-Perot interferometer. Both of said surfaces are at least partially reflective, and in that said first surface is provided with at least one optical detector, and one of surfaces being provided on an at least partially transparent material.Type: GrantFiled: October 2, 2002Date of Patent: January 16, 2007Assignee: Sinvent ASInventors: Ib-Rune Johansen, Britta Grennberg Fismen, Henrik Rogne, Dag Wang, Berit Sundby Avset, Alain Ferber, Ralph W. Bernstein
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Publication number: 20060024837Abstract: The present invention comprises an apparatus and a method for mass analyses of an array of samples contained in distinct sample holders. The sample holders are placed on a plurality of sensors which preferably comprise an array of microbalances providing output signals comprising mass data on the array of samples.Type: ApplicationFiled: October 4, 2005Publication date: February 2, 2006Inventors: Rune Wendelbo, Duncan Akporiaye, Arne Karlsson, Ib-Rune Johansen, Ivar Dahl, Britta Fismen, Richard Blom, Dag Wang, Morten Gulliksen, Martin Plassen
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Publication number: 20060002819Abstract: The present invention comprises an apparatus and a method for mass analyses of an array of samples contained in distinct sample holders. The sample holders are placed on a plurality of sensors which preferably comprise an array of microbalances providing output signals comprising mass data on the array of samples.Type: ApplicationFiled: July 1, 2004Publication date: January 5, 2006Inventors: Rune Wendelbo, Duncan Akporiaye, Arne Karlsson, Ib-Rune Johansen, Ivar Dahl, Britta Fismen, Richard Blom, Dag Wang, Morten Gulliksen, Martin Plassen
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Publication number: 20050105098Abstract: This invention relates to an optical displacement sensor element, e.g. for use in a pressure sensor or a microphone, comprising two essentially flat surfaces being separated by a cavity being defined by a spacer, the distance between the surfaces being variable thus providing a displacement sensitive Fabry-Perot interferometer. Both or said surfaces are at least partially reflective, and in that said first surface is provided with at least one optical detector, and one of surfaces being provided on an at least partially transparent material.Type: ApplicationFiled: October 2, 2002Publication date: May 19, 2005Applicant: Sinvent ASInventors: Ib-Rune Johansen, Britta Grennberg, Henrik Rogne, Dag Wang, Berit Avset, Alain Ferber, Ralph Bernstein
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Publication number: 20050061553Abstract: A spring scale, in particular for weighing loads in the ?g-mg range, comprises a load platform suspended by at least three flexural springs in a surrounding frame, and has bridge-connected strain gauges arranged for measuring strain on one side of the flexural springs. The flexural springs extend in succession along substantially the whole periphery of the load platform in a gap between the load platform and the inner edge of the frame, and an attachment spot on the load platform for every flexural spring is arranged substantially directly opposite or past an attachment spot on the inner edge of the frame for a next flexural spring in the succession of springs. Preferably, the of spring scale is made in one piece, and manufactured by means of semiconductor process technology.Type: ApplicationFiled: February 24, 2003Publication date: March 24, 2005Inventors: Dag Wang, Ralph Bernstein, Geir Jensen, Eivind Lund
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Publication number: 20050018541Abstract: The invention relates an optical displacement sensor element comprising two essentially flat surfaces (1,2) being separated by a cavity defined by a spacer (5) and the surfaces (1,2), the distance between the surfaces being variable, wherein a first of said surfaces (1) is positioned on an at least partially transparent carrier (3) and being provided with a reflective pattern, the pattern constituting a pattern being shaped as a diffractive lens, and said second surface (2) being a reflective surface.Type: ApplicationFiled: November 13, 2002Publication date: January 27, 2005Inventors: Ib-Rune Johansen, Olav Solgaard, Odd Lovhaugen, Hakon Sagberg, Henrik Rogne, Dag Wang