Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6358872 | Mineral fiber composition | Kirsti Marjatta Karppinen, Michael Perander, Antero Olavi Pehkonen, Seija Marketta Maine | 2002-03-19 |
| 5843854 | Mineral fibre composition | Kirsti Marjatta Karppinen, Michael Perander, Antero Olavi Pehkonen, Seija Marketta Maine | 1998-12-01 |
| 5123941 | Apparatus for producing mineral wool | Henning J. E. Lauren | 1992-06-23 |