Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7794571 | Method for managing lamella vibrations of a lip channel of a head box and the lamella for the lip channel of the headbox | Hannu Lepomäki, Petri Jetsu, Jukka Heikkinen, Ari Puurtinen | 2010-09-14 |
| 6808601 | Method for mixing dilution liquid into a stock flow in a paper or board machine to control basis weight using coarse and fine controls | — | 2004-10-26 |
| 6770171 | Method and system for controlling headbox in a paper/board machine | Jari Hamalainen, Hannu Lepomäki, Pasi Sirviö | 2004-08-03 |
| 6551459 | Regulation system for the short circulation and headbox of a paper machine or equivalent | Hannu Lepomäki, Petri Jetsu, Petri Nyberg, Hannu Karema, Markku Kellomaki +1 more | 2003-04-22 |
| 6471827 | Method and device for measurement of the retention profile and for control of the retention in a paper/board machine | Antti Poikolainen, Ari Puurtinen, Mika Viertola | 2002-10-29 |
| 6402893 | Control equipment for the headbox tip lath in a paper machine or such and method of tip lath control | Jarmo Kirvesmäki, Kari Pitkajarvi, Tommi Korolainen, Ilkka Kemiläinen | 2002-06-11 |
| 6368462 | Headbox for a paper or board making machine | Antti Poikolainen | 2002-04-09 |