Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5125942 | Process for the production of mineral wool fibres of low shot content | Peter-Roger Nyssen, Dirk Berkenhaus, Ewald Strzelczyk | 1992-06-30 |
| 5114631 | Process for the production from thermoplastic polymers of superfine fibre nonwoven fabrics | Peter-Roger Nyssen, Dirk Berkenhaus | 1992-05-19 |
| 4937020 | Production of very fine polymer fibres | Wolfram Wagner, Peter-Roger Nyssen, Dirk Berkenhaus | 1990-06-26 |
| 4838917 | Process and apparatus for the production of very fine mineral fibers, in particular glass fibers | Wolfram Wagner, Roger Nyssen, Dirk Berkenhaus | 1989-06-13 |
| 4676815 | Apparatus for the production of fine mineral fibres | Wolfram Wagner, Peter-Roger Nyssen, Gunter Espanion, Dirk Berkenhaus, Gunter Haladuda +1 more | 1987-06-30 |