Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123152 | Yankee cylinder with a plasma-sprayed carbide coating | Bjarne Hellman, Jorma Majava | 1992-06-23 |
| 4810850 | Method of arc spraing and filler wire for producing a coating which is highly resistant to mechanical and/or chemical wear | Bjarne Hellman, Juha Huusko | 1989-03-07 |