Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4418894 | Furnace taphole drilling apparatus and method | — | 1983-12-06 |
| 4403516 | Furnace probe | Victor Kremer | 1983-09-13 |
| 4368813 | Distribution chute control apparatus and method | — | 1983-01-18 |
| 4354665 | Valve for opening and closing a fluid conduit | Leon Ulveling | 1982-10-19 |
| 4322197 | Process and installation for charging a shaft furnace | Rene N. Mahr, Henri Radoux, Emile Lonardi | 1982-03-30 |
| 4307987 | Shaft furnace charging apparatus | Edouard Legille, Rene N. Mahr | 1981-12-29 |
| 4273492 | Charging device for shaft furnaces | Edouard Legille | 1981-06-16 |
| 4266907 | Device for handling the various components of an installation for the injection of pre-heated air into a shaft furnace | — | 1981-05-12 |
| 4243351 | Method of and apparatus for charging a furnace | Edouard Legille, Rene N. Mahr | 1981-01-06 |
| 4227682 | Guide and support structure for furnace taphole plugging or drilling device | Leon Ulveling, Jean Metz | 1980-10-14 |
| 4214608 | Apparatus for opening and closing a fluid conduit | Leon Ulveling | 1980-07-29 |
| 4201373 | Guiding and positioning mechanism for a plugging or drilling device | Leon Ulveling, Jean Metz | 1980-05-06 |
| 4190074 | Pressure equalization valve and technique for shaft furnace | Michel Kirchen | 1980-02-26 |