Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7993491 | End part of an air dryer, air dryer, method in the end part of an air dryer and use of fan | Pertti Heikkila, Johan Lindholm, Markku Laitonen | 2011-08-09 |
| 6598315 | Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying | Pertti Heikkila | 2003-07-29 |
| 6511015 | Method and apparatus for stabilizing the running of a web in a paper machine or a like | Pertti Heikkila, Olli Huhtala, Heli Kankare | 2003-01-28 |
| 6293031 | Method and apparatus for drying a coated paper web or the like | Knut Ringbom | 2001-09-25 |
| 6289607 | Flotation dryer unit and method of use | Rami Aaltonen, Roland Banecki, Pertti Heikkila, Bertel Karlstedt | 2001-09-18 |
| 5570519 | Method and device in contact-free treatment of a web | Matti Lepisto, Eelis Matilainen, Bertel Karlstedt | 1996-11-05 |