Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4425556 | Ceramic cold conductor and method of producing the same | Helmut Schmelz | 1984-01-10 |
| 4407858 | Method for producing films of sintered polycrystalline silicon | Hans-Martin Hellebrand, Helmut Schmelz | 1983-10-04 |
| 4361529 | Method for producing plate or tape shaped silicon crystal bodies having crystalline pillar-like structures, equivalent to columnar structures, for large surface solar cells | Helmut Schmelz | 1982-11-30 |