Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303766 | Apparatus and method for the manufacture of hot-rolled steel | Rein L. Huisman, Robert F. Gadellaa, Frans Hollander, Leo A. Kuhry | 1994-04-19 |
| 4643403 | Liquid-cooled lance for blowing oxygen onto a steel bath and method of operating the lance | Gerardus P. Buhrmann | 1987-02-17 |
| 4443252 | Process for producing steel in a converter from pig iron and ferrous scrap | Gerardus P. Buhrmann | 1984-04-17 |