Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11346002 | Composition for coating of metallic surfaces with good adhesion, in particular aluminum materials | Stefan Birkenheuer, Manfred Walter, Nawel Souad Khelfallah | 2022-05-31 |
| 11261531 | Method for pretreating aluminum materials, particularly aluminum wheels | Nawel Souad Khelfallah, Manfred Walter, Marie-Pierre Labeau, Guillaume Gody | 2022-03-01 |