Patents by Inventor Paavo TOLONEN

Paavo TOLONEN 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).

  • Screen assembly for pulp digesters and other treatment vessels in pulp production
    Patent number: 11255046
    Abstract: A screen assembly for a digester, impregnation vessel or other treatment vessel for separation of cooking liquor or treatment liquor from lignocellulosic material, typically in a form of chips, in the production of chemical cellulose pulp, which screen assembly includes a plurality of screen panels (17) of woven wire mesh cloth and attachment device configured to attach the screen panels to a support frame of the digester or vessel.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: February 22, 2022
    Assignee: Andritz Oy
    Inventors: Henri Kesseli, Paavo Tolonen
  • SCREEN ASSEMBLY FOR PULP DIGESTERS AND OTHER TREATMENT VESSELS IN PULP PRODUCTION
    Publication number: 20190242059
    Abstract: A screen assembly for a digester, impregnation vessel or other treatment vessel for separation of cooking liquor or treatment liquor from lignocellulosic material, typically in a form of chips, in the production of chemical cellulose pulp, which screen assembly includes a plurality of screen panels (17) of woven wire mesh cloth and attachment device configured to attach the screen panels to a support frame of the digester or vessel.
    Type: Application
    Filed: October 16, 2017
    Publication date: August 8, 2019
    Inventors: Henri KESSELI, Paavo TOLONEN