Patents by Inventor Fredrik Winquist

Fredrik Winquist 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).

  • Sulphite sensor and method for measuring sulphite concentration in a substance
    Patent number: 10113989
    Abstract: The present invention relates to a method for measuring a concentration of sulphite in a substance in a gas cleaning process, the method comprising the steps of sending a plurality of voltage pulses through the substance by a first electrode (11) and a second electrode (20), which first and second electrodes (11, 20) are in contact with the substance, receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of sulphite in the substance. The present invention further relates to a sulphite sensor (1) for performing such a method.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: October 30, 2018
    Assignee: General Electric Technology GmbH
    Inventors: Fredrik Jens Brogaard, Mikael Larsson, Fredrik Winquist
  • ELECTROCHEMICAL METHODS AND SYSTEM FOR DETECTING CADMIUM
    Publication number: 20160320339
    Abstract: The present invention relates to improvements of detecting cadmium in cereal samples with a voltammometric stripping method. The improvements include contacting the sample with one or several agents and adaptations of a corresponding system for fast, reliable and ambulatory measurements of cadmium in cereal samples.
    Type: Application
    Filed: July 15, 2016
    Publication date: November 3, 2016
    Inventors: Fredrik Winquist, Pär-Johan Lööf
  • SULPHITE SENSOR AND METHOD FOR MEASURING SULPHITE CONCENTRATION IN A SUBSTANCE
    Publication number: 20140231272
    Abstract: The present invention relates to a method for measuring a concentration of sulphite in a substance in a gas cleaning process, the method comprising the steps of sending a plurality of voltage pulses through the substance by a first electrode (11) and a second electrode (20), which first and second electrodes (11, 20) are in contact with the substance, receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of sulphite in the substance. The present invention further relates to a sulphite sensor (1) for performing such a method.
    Type: Application
    Filed: October 8, 2012
    Publication date: August 21, 2014
    Inventors: Fredrik Jens Brogaard, Mikael Larsson, Fredrik Winquist
  • Electronic tongue as ozone detector
    Patent number: 6841053
    Abstract: An electronic tongue for the detection of ozone is based on voltammetry, and comprises at least one working electrode and a counter electrode, wherein the working electrode(s) is(are) made of one or more transition metals or Au, or alloys thereof, or alloys thereof with other metals. The data processing is made by multivariate analysis. The sensor can be implemented on-line or in-line in a processing plant where it is desirable to monitor and control ozone levels, e.g. sterilization and purification plants.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 11, 2005
    Assignee: Otre AB
    Inventors: Fredrik Winquist, Carina Högberg, Christina Krantz-Rückler, Kjell Ekberg
  • Electronic tongue as ozone detector
    Publication number: 20020157946
    Abstract: An electronic tongue for the detection of ozone is based on voltammetry, and comprises at least one working electrode and a counter electrode, wherein the working electrode(s) is(are) made of one or more transition metals or Au, or alloys thereof, or alloys thereof with other metals. The data processing is made by multivariate analysis. The sensor can be implemented on-line or in-line in a processing plant where it is desirable to monitor and control ozone levels, e.g. sterilization and purification plants.
    Type: Application
    Filed: December 20, 2001
    Publication date: October 31, 2002
    Inventors: Fredrik Winquist, Carina Hogberg, Christina Krantz-Ruckler, Kjell Ekberg