Patents by Inventor Johanna Lyytikainen

Johanna Lyytikainen 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 for applying starch to a paper or paperboard web
    Patent number: 12258715
    Abstract: The invention relates to a method for applying starch to a paper or paperboard web, the method comprising the steps of: providing an aqueous suspension comprising starch particles and at least 1 wt %, based on the dry solid content of the suspension, of an amphiphilic polymer, creating a foam of the aqueous suspension, and applying the foam to the paper or paperboard web. The invention further relates to a paper or paper board product obtained by the method.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: March 25, 2025
    Assignee: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Johanna Lyytikainen
  • METHOD FOR APPLYING STARCH TO A PAPER OR PAPERBOARD WEB
    Publication number: 20220243401
    Abstract: The invention relates to a method for applying starch to a paper or paperboard web, the method comprising the steps of: providing an aqueous suspension comprising starch particles and at least 1 wt %, based on the dry solid content of the suspension, of an amphiphilic polymer, creating a foam of the aqueous suspension, and applying the foam to the paper or paperboard web. The invention further relates to a paper or paper board product obtained by the method.
    Type: Application
    Filed: May 13, 2020
    Publication date: August 4, 2022
    Applicant: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Johanna Lyytikainen