Patents by Inventor Fredrik Lars Jarhede

Fredrik Lars Jarhede 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).

  • Methods and apparatus for measuring the light absorbance of a substance in a solution
    Patent number: 9322772
    Abstract: Disclosed is an apparatus for measuring the absorbance of a substance in a solution, comprising: i) a sample cell (30) of known path length (b) for containing said solution (S), said cell being transparent to light of a predefined wavelength spectrum; ii) plural LED's each being independently operable by means of a controller (25) each for emitting light, within said predefined wavelength spectrum, along a light path; iii) a band pass filter (22) in the light path; iv) a beam splitter (24) for dividing light from said source propagating along the path into a first portion and a second portion, said first portion being directable by the beam splitter toward a reference detector (42) and said second portion being directable into the cell (30); v) a reference detector (42) for detecting the intensity of said first portion of light directed by said beam splitter; and vi) a sample detector (40) for detecting the intensity of the second portion propagating from the cell; the apparatus allowing a sample in the cell
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 26, 2016
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Hanno Ehring, Fredrik Lars Jarhede, Erik Ostlund
  • METHODS AND APPARATUS FOR MEASURING THE LIGHT ABSORBANCE OF A SUBSTANCE IN A SOLUTION
    Publication number: 20150153272
    Abstract: Disclosed is an apparatus for measuring the absorbance of a substance in a solution, comprising: i) a sample cell (30) of known path length (b) for containing said solution (S), said cell being transparent to light of a predefined wavelength spectrum; ii) plural LED's each being independently operable by means of a controller (25) each for emitting light, within said predefined wavelength spectrum, along a light path; iii) a band pass filter (22) in the light path; iv) a beam splitter (24) for dividing light from said source propagating along the path into a first portion and a second portion, said first portion being directable by the beam splitter toward a reference detector (42) and said second portion being directable into the cell (30); v) a reference detector (42) for detecting the intensity of said first portion of light directed by said beam splitter; and vi) a sample detector (40) for detecting the intensity of the second portion propagating from the cell; the apparatus allowing a sample in the cell
    Type: Application
    Filed: May 30, 2013
    Publication date: June 4, 2015
    Applicant: GE HEALTHCARE BIO-SCIENCES AB
    Inventors: Hanno Ehring, Fredrik Lars Jarhede, Erik Ostlund