Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5560990 | Fiber blend | Otto M. Ilg, Dominick A. Burlone, William Theuer, Heinz Berbner, Karl-Heinz Ott +1 more | 1996-10-01 |
| 5478640 | Electrical insulating paper | Heinz Berbner, Karl-Heinz Ott, Hans D. Zettler | 1995-12-26 |