- 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: 379
10-year publication summary
|
32
|
15
|
19
|
16
|
12
|
8
|
38
|
23
|
30
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ThyssenKrupp AG | 3409 |
28 |
| FLSmidth A/S | 789 |
27 |
| KHD Humboldt Wedag GmbH | 192 |
25 |
| ThyssenKrupp Industrial Solutions AG | 630 |
20 |
| thyssenkrupp Polysius GmbH | 165 |
17 |
| Polysius AG | 40 |
10 |
| Andritz Oy | 294 |
8 |
| Holcim Technology Ltd. | 485 |
8 |
| Fives FCB | 66 |
6 |
| Amrize Technology Switzerland LLC | 717 |
6 |
| Sudbayerisches Portland-zementwerk Gebr. Wiesbock & Co. GmbH | 16 |
5 |
| Mitsubishi Ube Cement Corporation | 60 |
5 |
| Guangzhou Tinci Materials Technology Co., Ltd. | 158 |
4 |
| Quantum IR Technologies, LLC | 19 |
4 |
| Tinci Materials (Taizhou) Co., Ltd. | 10 |
4 |
| Air Products and Chemicals, Inc. | 1471 |
3 |
| Alite GmbH | 20 |
3 |
| Carmeuse Lime, Inc. | 33 |
3 |
| Fives North American Combustion, Inc. | 47 |
3 |
| Italcementi S.p.A. | 63 |
3 |
| Other owners | 187 |