Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6609996 | Method for sealing of a coating on a roll | Kari Niemi, Bjarne Hellman, Pentti Lehtonen | 2003-08-26 |
| 6461687 | Method for manufacturing a paper or board machine and coating composition therefor | Juhani Vestola, Kari Niemi, Pentti Lehtonen, Jorma Majava, Jussi Tuomela +1 more | 2002-10-08 |
| 6167623 | Press roll with a ceramic coating, method for manufacturing the same and coating composition | Kari Niemi, Pentti Lehtonen | 2001-01-02 |
| 5967959 | Press roll with a ceramic coating, method for manufacturing the same and coating composition | Kari Niemi, Pentti Lehtonen | 1999-10-19 |