Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5276763 | Infrared radiator with protected reflective coating and method for manufacturing same | Wolfgang Gobel, Klaus Schmitz | 1994-01-04 |
| 4748071 | Decal for decoration with bright noble metal | Gunter Landgraf | 1988-05-31 |
| 4713512 | Microwave stable tableware | Joachim Straub, Gunter Landgraf | 1987-12-15 |
| 4594107 | Decorative burnish gold composition | Gunter Landgraf | 1986-06-10 |