- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 7/20 - Details, accessories or equipment specially adapted for rotary-drum furnaces
Patent holdings for IPC class F27B 7/20
Total number of patents in this class: 387
10-year publication summary
|
32
|
15
|
19
|
16
|
12
|
8
|
39
|
24
|
33
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ThyssenKrupp AG | 3329 |
29 |
| FLSmidth A/S | 785 |
27 |
| KHD Humboldt Wedag GmbH | 193 |
25 |
| ThyssenKrupp Industrial Solutions AG | 630 |
20 |
| thyssenkrupp Polysius GmbH | 169 |
18 |
| Polysius AG | 38 |
10 |
| Andritz Oy | 294 |
8 |
| Holcim Technology Ltd. | 487 |
8 |
| Fives FCB | 66 |
6 |
| Amrize Technology Switzerland LLC | 721 |
6 |
| Sudbayerisches Portland-zementwerk Gebr. Wiesbock & Co. GmbH | 16 |
5 |
| Mitsubishi Ube Cement Corporation | 61 |
5 |
| Guangzhou Tinci Materials Technology Co., Ltd. | 161 |
4 |
| Quantum IR Technologies, LLC | 19 |
4 |
| Puraglobe Holding GmbH | 5 |
4 |
| Tinci Materials (Taizhou) Co., Ltd. | 10 |
4 |
| Air Products and Chemicals, Inc. | 1474 |
3 |
| Alite GmbH | 20 |
3 |
| Carmeuse Lime, Inc. | 33 |
3 |
| Coolbrook Oy | 75 |
3 |
| Other owners | 192 |