Patents by Inventor Leif Grönberg

Leif Grönberg 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: 10410798
    Abstract: A blank suitable for use as a body of a supercapacitor comprises a first porous semiconductor volume and a second porous semiconductor volume, the second porous semiconductor volume laterally surrounded by the first porous semiconductor volume and separated from it by a trench that is suitable for receiving an electrolyte, whereby the first and second porous semiconductor volume comprise channels opening to the trench. A supercapacitor comprises a body formed by using the blank according to any one of the preceding claims, so that the first porous semiconductor volume acts as one electrode and the second porous semiconductor volume acts as another electrode, with an electrolyte in the trench.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: September 10, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jouni Ahopelto, Grigoras Kestutis, Leif Grönberg, Mika Prunnila
  • Patent number: 10145743
    Abstract: A superconducting thermal detector (bolometer) of THz (sub-millimeter) wave radiation based on sensing the change in the amplitude or phase of a resonator circuit, consisting of a capacitor (Csh) and a superconducting temperature dependent inductor where the said inductor is thermally isolated from the heat bath (chip substrate) by micro-suspensions. The bolometer design includes a thin film inductor located on the membrane, a single or/and multi-layered thin film capacitor, and a thin film absorber of incoming radiation. The bolometer design can also include a lithographic antenna with antenna termination and/or a back reflector beneath the membrane for optimal wavelength detection by the resonance circuit. The superconducting thermal detector (bolometer) and arrays of these detectors operate in a temperature range from 1 Kelvin to 10 Kelvin.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: December 4, 2018
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Andrey Timofeev, Juha Hassel, Arttu Luukanen, Panu Helistö, Leif Grönberg
  • Publication number: 20170229252
    Abstract: A blank suitable for use as a body of a supercapacitor comprises a first porous semiconductor volume and a second porous semiconductor volume, the second porous semiconductor volume laterally surrounded by the first porous semiconductor volume and separated from it by a trench that is suitable for receiving an electrolyte, whereby the first and second porous semiconductor volume comprise channels opening to the trench. A supercapacitor comprises a body formed by using the blank according to any one of the preceding claims, so that the first porous semiconductor volume acts as one electrode and the second porous semiconductor volume acts as another electrode, with an electrolyte in the trench.
    Type: Application
    Filed: October 14, 2015
    Publication date: August 10, 2017
    Inventors: Jouni Ahopelto, Grigoras Kestutis, Leif Grönberg, Mika Prunnila
  • Publication number: 20160018267
    Abstract: A superconducting thermal detector (bolometer) of THz (sub-millimeter) wave radiation based on sensing the change in the amplitude or phase of a resonator circuit, consisting of a capacitor (Csh) and a superconducting temperature dependent inductor where the said inductor is thermally isolated from the heat bath (chip substrate) by micro-suspensions. The bolometer design includes a thin film inductor located on the membrane, a single or/and multi-layered thin film capacitor, and a thin film absorber of incoming radiation. The bolometer design can also include a lithographic antenna with antenna termination and/or a back reflector beneath the membrane for optimal wavelength detection by the resonance circuit. The superconducting thermal detector (bolometer) and arrays of these detectors operate in a temperature range from 1 Kelvin to 10 Kelvin.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 21, 2016
    Inventors: Andrey Timofeev, Juha Hassel, Arttu Luukanen, Panu Helistö, Leif Grönberg