Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5325580 | Process for the production of enamelled workpieces | Hermann Gruber, Eberhard Arning, Hans-Peter Hoffmann, Alain Viquesnel, Dieter Margotte +1 more | 1994-07-05 |
| 5250475 | Black glass pastes for glazing and their production | Ruggero Bertocchi | 1993-10-05 |
| 4970375 | High-temperature heating systems and a process for their production | Hans-Joachim Schittenhelm | 1990-11-13 |