Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883565 | Process for electrophoretic white and colored enamelling | Hans-Peter Hoffmann | 1989-11-28 |
| 4822463 | Process for the electrophoretic formation of selfcleaning enamel free from aluminum on steel sheet parts | Hans-Peter Hoffmann | 1989-04-18 |