Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810190 | Method and apparatus calcining mineral raw materials utilizing solid fuel | — | 1989-03-07 |
| 4534731 | Process and apparatus for calcining limestone | Max Ranner | 1985-08-13 |
| 4482280 | Feeding apparatus for uniflow regenerative shaft furnaces for calcining limestone and similar mineral materials | Horst Waldert | 1984-11-13 |
| 4480991 | Process of and apparatus for operating a shaft furnace | — | 1984-11-06 |
| 4392821 | Calcining furnace with gas-permeable wall structure | Norbert Berger | 1983-07-12 |
| 4382779 | Regenerative shaft furnace for burning carbonate-containing raw materials | — | 1983-05-10 |
| 4315735 | Process for calcining mineral raw materials in a uniflow regenerative shaft furnace | Karl Scheibenreif | 1982-02-16 |
| 4289482 | Fuel lance structure for a uniflow regenerative shaft furnace | — | 1981-09-15 |