Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666638 | Process for producing sponge iron briquettes from fine ore | — | 1997-09-09 |
| 5630202 | Method for making sponge iron briquettes from fine ore | — | 1997-05-13 |
| 5547357 | Apparatus for hot-briquetting iron sponge | — | 1996-08-20 |
| 5376161 | Steel making process including transporting spong iron briquettes | Friedrich-Hans Grandin | 1994-12-27 |
| 5215765 | Iron sponge briquetting press | — | 1993-06-01 |
| 4925382 | Roller press for compacting fine-grained salts into sheets | Kurt Zech, Raimund Zisselmar | 1990-05-15 |
| 4439384 | Method for manufacturing graules from potassium chloride fines | — | 1984-03-27 |
| 4395944 | Two roll press | Walter Siepermann | 1983-08-02 |
| 4368165 | Roll press and method of regulation of the throughput of a roll press | — | 1983-01-11 |
| 4337023 | Roller press for compacting and briquetting of bulk material | Heinz Koppern, Hartmut Rieschel, Friedhelm Koch | 1982-06-29 |