Patents by Inventor Pirkko-Leena Aarnikoivu

Pirkko-Leena Aarnikoivu 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 manufacture of paper and a paper machine
    Patent number: 6413371
    Abstract: The invention concerns a method for manufacture of paper, most appropriately for porous paper for color powder printing. In the method paper is manufactured by means of a paper machine. In the method the paper stock is fed out of the headbox (100) into the wire part (200), in which wire part (200) water is drained out of the paper web in both directions. In the method the paper web (W) is passed from the wire part (200) into the press section (300) in order to press water out of the paper web (W), and after the press section (300), the paper web (W) is dried in the dryer section (400) and coated/pigmented in the coating section (500), dried in an after-dryer section (600) and calendered in a calender (600), and reeled in a reel-up (800).
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: July 2, 2002
    Assignee: Metso Paper, Inc.
    Inventors: Pasi Ahonen, Juha S. Kinnunen, Mari Taipale, Pirkko-Leena Aarnikoivu