Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11808067 | Door arrester | Peter Hoffmann, Heiner Ackers, Gundolf Heinrichs | 2023-11-07 |
| 11492828 | Door holder | Peter Hoffmann, Gundolf Heinrichs, Dietmar Rehborn | 2022-11-08 |
| 11359423 | Retainer housing for a door check | Peter Hoffmann, Josef KASBERGER, Heiner Ackers | 2022-06-14 |
| 10767402 | Door check and method for blocking a door check | Peter Hoffmann, Gundolf Heinrichs, Matthias Brinker, Heiner Ackers, Dietmar Rehborn | 2020-09-08 |
| 7870641 | Door stay with support housing | Peter Hoffmann, Gundolf Heinrichs | 2011-01-18 |