Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12209516 | Armored poppet valve and method for the production thereof | Stefan Kellermann | 2025-01-28 |
| 12049836 | Valve stem seal comprising a valve rotating device | Dirk Schober, Frank Zwein, Florian Ringeling, Stefan Kellermann | 2024-07-30 |
| 11951561 | Method for producing a welded cavity valve | ANTONIUS WOLKING | 2024-04-09 |
| 11898473 | Method and device for manufacturing hollow, internally cooled valves | Dirk Schober | 2024-02-13 |
| 11850655 | Process and device for manufacturing hollow, internally cooled valves | ANTONIUS WOLKING, GUIDO BAYARD | 2023-12-26 |
| 11813658 | Method for producing a hollow valve for internal combustion engines | ANTONIUS WOLKING, Johannes Knust | 2023-11-14 |
| 11654471 | Method for producing a hollow valve for internal combustion engines | ANTONIUS WOLKING, GUIDO BAYARD | 2023-05-23 |
| 11333046 | Internally cooled valve for an internal combustion engine | ANTONIUS WOLKING, Fernando Arias, Florian Ringeling | 2022-05-17 |
| 11313257 | Cavity valve with optimized shaft interior geometry, and method for producing same | ANTONIUS WOLKING, Andreas Heinek, GUIDO BAYARD | 2022-04-26 |
| 11260448 | Method for the production of hollow chamber valves | ANTONIUS WOLKING, GUIDO BAYARD, Andreas Heinek | 2022-03-01 |
| 11154957 | Method for cross-wedge rolling poppet valves | ANTONIUS WOLKING, GUIDO BAYARD | 2021-10-26 |
| 10243094 | Method for producing a conductive multiple substrate stack | — | 2019-03-26 |