Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7753627 | Single-lip drill and method for the production thereof | Heiner Baumgärtner | 2010-07-13 |
| 6287245 | Deep drilling device | — | 2001-09-11 |
| 6148516 | Metallic cylinder head gasket | Armin Diez | 2000-11-21 |
| 5875548 | Method of making a metallic cylinder head gasket | Armin Diez | 1999-03-02 |
| 5695200 | Metallic cylinder head gasket with rounded deformation limiter | Armin Diez | 1997-12-09 |