Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7846508 | Method for treating wood surfaces | Arend Jouke Kingma, Eva Wagner, Klaus Menzel, Holger Militz, Andreas Krause +2 more | 2010-12-07 |
| 6421934 | Skate boot and getting up aid for such a skate boot | — | 2002-07-23 |
| 6223457 | Skate boot shell for such a skate boot and headpiece for a skate boot | — | 2001-05-01 |
| D430251 | Runner fixture | — | 2000-08-29 |
| D423619 | Goalkeeper shell for ice hockey shoe | — | 2000-04-25 |
| 5072529 | Ice skate | — | 1991-12-17 |