Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7910050 | Stopper for a metallurgical melting pot | Markus Fauhl, Jürgen Pernot, Helmut Muller | 2011-03-22 |
| 5279993 | Gas injection stone and process of manufacture thereof | Hans Rothfuss, Herbert Metzger, Jochen Kopia | 1994-01-18 |
| 5202079 | Means and method for determining the degree of wear of a gas injection device | Hans Rothfuss, Herbert Metzger | 1993-04-13 |
| 5152048 | Process for manufacturing a composite assembly of ceramic and steel | Raimund Bruckner, Hans Rothfuss, Ulrich Nebe | 1992-10-06 |
| 5127632 | Gas flushing device including perforated brick and gas flushing stone assembly | Udo Muschner, Herbert Metzger, Hans Rothfuss | 1992-07-07 |
| 5097995 | Flow starting tube for initiating the flow of molten material from a vessel | Clemens Zybok, Manfred Berndt, Rolf Waltenspuhl, Armin Kursfeld, Udo Muschner | 1992-03-24 |
| 5056762 | Apparatus for mounting a gas washing sink in a centered manner in a perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Herbert Metzger | 1991-10-15 |
| 5007621 | Apparatus for mounting a gas washing sink in a centered manner in perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Herbert Metzger | 1991-04-16 |
| 4978108 | Gas washing sink without integral closure member | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Josef Seeger, Herbert Metzger | 1990-12-18 |
| 4971295 | Safety-type gas washing sink having improved heat dissipation properties | Hans Rothfuss, Raimund Bruckner | 1990-11-20 |
| 4911338 | Refractory plate assembly including replaceable refractory erosion unit | Udo Muschner | 1990-03-27 |
| 4730754 | Refractory immersion tube providing laminar flow of molten metal | Heinz Buhr, Jacques Brihay | 1988-03-15 |
| 4728013 | Refractory plate formed with expansion joints | Udo Muschner | 1988-03-01 |
| 4721287 | Sleeve for blowing solid materials into a molten metal bath and method for use thereof | — | 1988-01-26 |
| 4711432 | Gas washing device | Michael James Heinz, Joachim Lange, Udo Muschner, Herbert Naefe, Hans Rothfuss +1 more | 1987-12-08 |
| 4709905 | Casing assembly for injecting material into a metallurgical vessel | Udo Muschner, Pierre Gerber | 1987-12-01 |
| 4695043 | Gas scavenging apparatus for metallurgical vessels | Hans Rothfuss, Udo Muschner, Karl-Heinz Schmitt | 1987-09-22 |