Patents by Inventor Jon Olav Grepstad

Jon Olav Grepstad 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).

  • Patent number: 10677653
    Abstract: This invention relates to a source for emitting radiation in the infrared range comprising a thin membrane including a radiation element made from a semi-conductive material having a chosen dopant, the radiation element being connected to a frame, the frame comprising connector means for connecting to a power source for conducting an electrical current through the substrate, the radiation element being provided with a periodic modulation of the refractive index constituting a photonic crystal having a chosen period, thus defining an optical resonator at one or more chosen wavelengths, and wherein the membrane is mounted to the substrate through a number of conductor beams distributed along the membrane circumference so as to provide an even current distribution and thus even heating over the membrane.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: June 9, 2020
    Assignee: SINTEF TTO AS
    Inventors: Jo Gjessing, Jon Olav Grepstad, Hallvard Angelskår, Aasmund Sudbø, Thor Bakke, Zeljko Skokic
  • Patent number: 10495620
    Abstract: The present invention relates to a gas detector cell unit comprising a gas cell, the unit comprising an outer housing providing access to the gas outside through a protecting filter adapted to making gas cell safe for use in explosive environments, i.e. a sintered filter, and the unit comprising means for detecting reduction in the circulation through said protecting filter.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 3, 2019
    Assignee: Simtronics AS
    Inventors: Ib-Rune Johansen, Preben Storås, Matthieu Lacolle, Dag Thorstein Wang, Arne Karlsson, Jon Olav Grepstad, Michal Marek Mielnik
  • Patent number: 10416139
    Abstract: The present invention relates to a gas detector cell and cell unit for optical detection of a predetermined gas, the cell being provided with optical means for investigating a gas sample present in the cell. The cell is constituted by a volume enclosed in a container, at least part of the container wall being constituted by a membrane, the membrane being provided with openings allowing diffusion of gas therethrough, and the membrane openings being provided with a catalyst for converting the gas diffusing therethrough to said predetermined gas.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: September 17, 2019
    Assignee: Simtronics AS
    Inventors: Ib-Rune Johansen, Preben Storås, Matthieu Lacolle, Dag Thorstein Wang, Arne Karlsson, Jon Olav Grepstad, Arvid Bjerkestrand
  • Publication number: 20180335345
    Abstract: This invention relates to a source for emitting radiation in the infrared range comprising a thin membrane including a radiation element made from a semi-conductive material having a chosen dopant, the radiation element being connected to a frame, the frame comprising connector means for connecting to a power source for conducting an electrical current through the substrate, the radiation element being provided with a periodic modulation of the refractive index constituting a photonic crystal having a chosen period, thus defining an optical resonator at one or more chosen wavelengths, and wherein the membrane is mounted to the substrate through a number of conductor beams distributed along the membrane circumference so as to provide an even current distribution and thus even heating over the membrane.
    Type: Application
    Filed: October 5, 2016
    Publication date: November 22, 2018
    Applicant: SINTEF TTO AS
    Inventors: Jo GJESSING, Jon Olav GREPSTAD, Hallvard ANGELSKÅR, Aasmund SUDBØ, Thor BAKKE, Zeljko SKOKIC
  • Patent number: 9594079
    Abstract: This invention relates to a system and method for detecting target molecules using an optical sensor element including a photonic crystal constituted by a membrane of a chosen transparent material, being provided with a number of defined openings in a chosen pattern, a chosen number of the openings providing capture molecules having a high affinity to target molecules, the pattern being adapted to provide resonance at a chosen wavelength, or range of wavelengths. The system and method also moving a first fluid flow containing target molecules through the openings and after this conducting a second fluid flow containing a second reactant being different from the capture molecules but having a high affinity for the target molecules but a low affinity for other possible molecules in the first flow. By illuminating the sensor element at a chosen wavelength thus obtaining a resonance and imaging means for providing an image of the sensor element it is possible to detect tight leaking from the resonator.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: March 14, 2017
    Assignee: Sinvent AS
    Inventors: Michal Marek Mielnik, Jon Olav Grepstad, Ib-Rune Johansen
  • Publication number: 20160320361
    Abstract: The present invention relates to a gas detector cell and cell unit for optical detection of a predetermined gas, the cell being provided with optical means for investigating a gas sample present in the cell. The cell is constituted by a volume enclosed in a container, at least part of the container wall being constituted by a membrane, the membrane being provided with openings allowing diffusion of gas therethrough, and the membrane openings being provided with a catalyst for converting the gas diffusing therethrough to said predetermined gas.
    Type: Application
    Filed: December 12, 2014
    Publication date: November 3, 2016
    Inventors: Ib-Rune JOHANSEN, Preben STORÅS, Matthieu LACOLLE, Dag Thorstein WANG, Arne KARLSSON, Jon Olav GREPSTAD, Arvid BJERKESTRAND
  • Publication number: 20160313291
    Abstract: The present invention relates to a gas detector cell unit comprising a gas cell, the unit comprising an outer housing providing access to the gas outside through a protecting filter adapted to making gas cell safe for use in explosive environments, i.e. a sintered filter, and the unit comprising means for detecting reduction in the circulation through said protecting filter.
    Type: Application
    Filed: December 12, 2014
    Publication date: October 27, 2016
    Inventors: Ib-Rune JOHANSEN, Preben STORÅS, Matthieu LACOLLE, Dag Thorstein WANG, Arne KARLSSON, Jon Olav GREPSTAD, Michal Marek MIELNIK
  • Publication number: 20150219642
    Abstract: This invention relates to a system and method for detecting target molecules using an optical sensor element comprising a photonic crystal constituted by a membrane of a chosen transparent material, being provided with a number of defined openings in a chosen pattern, a chosen number of said openings providing a capture molecules having a high affinity to said target molecules, the pattern being adapted to provide resonance at a chosen wavelength, or range of wavelengths. The system and method also moving a first fluid flow containing target molecules through said openings and after this conducting a second fluid flow containing a second reactant being different from said capture molecules but having a high affinity for the target molecules but a low affinity for other possible molecules in said first flow.
    Type: Application
    Filed: August 13, 2013
    Publication date: August 6, 2015
    Applicant: Sinvent AS
    Inventors: Michal Marek Mielnik, Jon Olav Grepstad, Ib-Rune Johansen
  • Patent number: 8666201
    Abstract: This invention relates to an optical sensor element comprising a photonic crystal constituted by a membrane of a chosen transparent material, the membrane being provided with a number of defined openings in a chosen pattern, the pattern being adapted to provide resonance at a chosen wavelength or range of wavelengths, wherein said openings are provided with a reactive material acting as a receptor for a chosen type of molecules, e.g. proteins, the presence of which alters the resonance and/or scattering conditions in the sensor element thus altering the amount of light propagating out of the membrane plane.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: March 4, 2014
    Assignees: Sintef, The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jon Olav Grepstad, Stig Morten Borch, Ib-Rune Johansen, Aasmund Sudbo, Olav Solgaard
  • Publication number: 20120002913
    Abstract: This invention relates to an optical sensor element comprising a photonic crystal constituted by a membrane of a chosen transparent material, the membrane being provided with a number of defined openings in a chosen pattern, the pattern being adapted to provide resonance at a chosen wavelength or range of wavelengths, wherein said openings are provided with a reactive material acting as a receptor for a chosen type of molecules, e.g. proteins, the presence of which alters the resonance and/or scattering conditions in the sensor element thus altering the amount of light propagating out of the membrane plane.
    Type: Application
    Filed: March 24, 2010
    Publication date: January 5, 2012
    Applicant: SINTEF
    Inventors: Jon Olav Grepstad, Stig Morten Borch, Ib-Rune Johansen, Aasmund Sudbo, Olav Solgaard