Patents by Inventor Ari UKKONEN

Ari UKKONEN 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).

  • Method and apparatus for monitoring number density of aerosol particles
    Patent number: 12146809
    Abstract: An apparatus for measuring aerosol particles includes a charging unit to form charged particles by charging particles of an aerosol sample flow by diffusion charging, and a collecting unit to provide an electric current by collecting charges from the charged particles by diffusion of the charged particles, the electric current being indicative of number density of aerosol particles of the aerosol sample flow. The internal pressure of the collecting unit is maintained at a reduced value in order to provide a flat response of the electric current for detecting nanoparticles of different sizes.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: November 19, 2024
    Assignee: Dekati Oy
    Inventors: Anssi Arffman, Ari Ukkonen, Markus Nikka, Esa Luntta, Erkki Lamminen
  • Diluting device for aerosol measurements
    Patent number: 11692914
    Abstract: The aerosol diluting apparatus includes a first diluting unit to provide a first modified sample flow by combining an aerosol sample flow with a first diluting gas flow, an ejector unit to draw the first modified sample flow from the first diluting unit to the ejector unit and to provide a second modified sample flow by mixing a second dilution gas flow with the first modified sample flow, a control unit, and a control valve, wherein the control unit and the control valve are arranged to adjust flow rate of the second dilution gas flow according to an inlet pressure of the aerosol sample flow, so as to keep the dilution factor of the diluting apparatus substantially independent of the inlet pressure.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: July 4, 2023
    Assignee: Dekati Oy
    Inventors: Ville Niemelä, Leo Holma, Sami Lundahl, Ari Ukkonen
  • METHOD AND APPARATUS FOR MONITORING NUMBER DENSITY OF AEROSOL PARTICLES
    Publication number: 20230060801
    Abstract: An apparatus for measuring aerosol particles includes a charging unit to form charged particles by charging particles of an aerosol sample flow by diffusion charging, and a collecting unit to provide an electric current by collecting charges from the charged particles by diffusion of the charged particles, the electric current being indicative of number density of aerosol particles of the aerosol sample flow. The internal pressure of the collecting unit is maintained at a reduced value in order to provide a flat response of the electric current for detecting nanoparticles of different sizes.
    Type: Application
    Filed: February 2, 2021
    Publication date: March 2, 2023
    Applicant: Dekati Oy
    Inventors: Anssi ARFFMAN, Ari UKKONEN, Markus NIKKA, Esa LUNTTA, Erkki LAMMINEN
  • DILUTING DEVICE FOR AEROSOL MEASUREMENTS
    Publication number: 20220163430
    Abstract: The aerosol diluting apparatus includes a first diluting unit to provide a first modified sample flow by combining an aerosol sample flow with a first diluting gas flow, an ejector unit to draw the first modified sample flow from the first diluting unit to the ejector unit and to provide a second modified sample flow by mixing a second dilution gas flow with the first modified sample flow, a control unit, and a control valve, wherein the control unit and the control valve are arranged to adjust flow rate of the second dilution gas flow according to an inlet pressure of the aerosol sample flow, so as to keep the dilution factor of the diluting apparatus substantially independent of the inlet pressure.
    Type: Application
    Filed: February 10, 2020
    Publication date: May 26, 2022
    Applicant: Dekati Oy
    Inventors: Ville NIEMELÄ, Leo HOLMA, Sami LUNDAHL, Ari UKKONEN