Class F27B : FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
Subclass 1/04: Shaft or like vertical or substantially vertical furnaces (for preheating, burning, calcining or cooling lime, magnesia or dolomite C04B 2/12) with two or more shafts or chambers, e.g. multi-storey Combinations or arrangements of shafts
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11280546 | Process for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace, and furnace used | Oct 05, 16 | Mar 22, 22 | S.A. LHOIST RECHERCHE et DEVELOPPEMENT |
| 11034616 | System having a furnace and method for operating such a system | Mar 03, 17 | Jun 15, 21 | MAERZ OFENBAU AG; THYSSENKRUPP AG; |
| 10947125 | Furnace and method for operating a furnace | Mar 03, 17 | Mar 16, 21 | MAERZ OFENBAU AG; THYSSENKRUPP AG; |
| 10301219 | Parallel-flow regenerative lime kilns and processes for burning and cooling carbonate rock in same | Jul 28, 14 | May 28, 19 | MAERZ OFENBAU AG |
| 9499872 | Iron reduction process and equipment | Feb 07, 13 | Nov 22, 16 | VALEAS RECYCLING AB, VAL'EAS RECYCLING SOLUTIONS AB, |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0106,711 | METHOD FOR BURNING CARBON-CONTAINING MATERIAL IN A PFR SHAFT FURNACE | Feb 23, 21 | Apr 06, 23 | Maerz Ofenbau AG; THYSSENKRUPP AG; |
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