Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689271 | Coating for metallic substrates | Hans-Joachim Schittenhelm, Werner Joseph | 1987-08-25 |
| 4486542 | Enamel frit and a one-bake two- and multilayer enamelling process | Herbert Salzburg | 1984-12-04 |
| 4430438 | Enamel frit and a process for two-layer and multi-layer one-fire enamelling | Heinz Drave, Jozef Luypaert | 1984-02-07 |