Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795725 | Method for the manufacture of refractory bricks containing CaO | Jaap H. Addink, Christiaan M. J. M. Beelen, Hendrik M. Verhoog, Jurrie De Boer | 1989-01-03 |
| 4747985 | Method for the manufacture of a magnesia-carbon brick | Jaap H. Addink, Christian M. J. M. Beelen, Hendrik M. Verhoog, Jurrie De Boer | 1988-05-31 |
| 4535975 | Gas-transmitting wall element for a metallurgical vessel, a metallurgical vessel having such a wall element, and a method of producing steel | Gerardus P. Buhrmann | 1985-08-20 |
| 4465514 | Method of producing steel by the LD process | Gerardus P. Buhrmann | 1984-08-14 |
| 4294431 | Method of providing and maintaining a wear-lining of a steel converter and a steel converter having such a lining | Hendrik M. Verhoog | 1981-10-13 |