Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4189314 | Method of utilizing waste dust and waste sludge from blast furnaces and steel works | Hans-Werner Hohle, Wilhelm Janssen, Klaus Ulrich | 1980-02-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4189314 | Method of utilizing waste dust and waste sludge from blast furnaces and steel works | Hans-Werner Hohle, Wilhelm Janssen, Klaus Ulrich | 1980-02-19 |