Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540958 | Bell and hopper for shaft furnaces | Peter Heinrich, Hartmut Hille, Marko Ricke | 2003-04-01 |
| 6144689 | Cooling plate for shaft furnaces | Karl-Heinz Schmialek, Hartmut Hille, Peter Heinrich | 2000-11-07 |
| 6132673 | Cooling plates for shaft furnaces | Hartmut Hille | 2000-10-17 |
| 5938432 | Top closing device for shaft furnaces | Peter Heinrich, Hartmut Hille, Marco Ricke | 1999-08-17 |
| 5678806 | Plate coolers for shaft furnaces | Hartmut Hille | 1997-10-21 |
| 5676908 | Plate for cooling shaft furnaces | Axel Kubbutat, Karl Spickermann | 1997-10-14 |
| 5650119 | Cooling plate for a blast furnance | Hartmut Hille | 1997-07-22 |