Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352296 | Process for cleaning metal surfaces | Klaus Wittel | 1994-10-04 |
| 5203930 | Process of forming phosphate coatings on metal surfaces | Horst Gehmecker, Dieter Hauffe, Lothar Kaul, Thomas Nitschke, Werner Rausch +1 more | 1993-04-20 |