Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6675445 | Method and device for producing a mineral wool nonwoven fabric | Ludwig Schorr | 2004-01-13 |
| 4940478 | Method of melting raw materials | Heinz-Jurgen Ungerer, Klaus Sistermann | 1990-07-10 |