Patents by Inventor Timo Rantala

Timo Rantala 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: 6328851
    Abstract: The invention relates to a method and equipment for controlling properties of paper, in which method the effect of the flow of retention agent (Fra) and the stock flow (Fts) on the basis weight of the paper (BW) is modelled. The fulfilled modelling is used to adjust the basis weight of the paper (BW) by controlling simultaneously the flow of retention agent (Fra) and the stock flow (Fts).
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: December 11, 2001
    Assignee: Metso Paper Automation OY
    Inventors: Taisto Huhtelin, Risto Kuusisto, Lin Tian, Timo Rantala, Jukka Nokelainen
  • Patent number: 6319362
    Abstract: The invention relates to a method and equipment for controlling properties of paper, which method comprises modelling the effect of the flow of retention agent (Fra) both on the amount of filler in the white water and on the paper ash content (ASH), and the effect of the flow of filler (Ffi) both on the paper ash content (ASH) and on the amount of filler in the white water. The fulfilled modelling is used to adjust the amount of filler in the white water and the paper ash content (ASH) by controlling simultaneously the flow of retention agent (Fra) and the flow of filler (Ffi).
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: November 20, 2001
    Assignee: Metso Paper Automation Oy
    Inventors: Taisto Huhtelin, Risto Kuusisto, Lin Tian, Timo Rantala, Jukka Nokelainen