- 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: 363
10-year publication summary
|
32
|
15
|
17
|
13
|
12
|
8
|
32
|
22
|
24
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FLSmidth A/S | 780 |
28 |
| KHD Humboldt Wedag GmbH | 190 |
24 |
| ThyssenKrupp AG | 3382 |
24 |
| ThyssenKrupp Industrial Solutions AG | 632 |
20 |
| thyssenkrupp Polysius GmbH | 138 |
13 |
| Polysius AG | 45 |
11 |
| Holcim Technology Ltd. | 488 |
7 |
| Andritz Oy | 288 |
6 |
| Fives FCB | 60 |
6 |
| Amrize Technology Switzerland LLC | 678 |
6 |
| CEMAG Anlagenbau Dessau GmbH | 7 |
5 |
| Sudbayerisches Portland-zementwerk Gebr. Wiesbock & Co. GmbH | 16 |
5 |
| Mitsubishi Ube Cement Corporation | 55 |
5 |
| FLSmidth Cement A/S | 113 |
5 |
| Guangzhou Tinci Materials Technology Co., Ltd. | 94 |
4 |
| Pyrogenesis Canada, Inc. | 67 |
4 |
| Refractory Intellectual Property GmbH & Co. KG | 555 |
4 |
| Quantum IR Technologies, LLC | 19 |
4 |
| Tinci Materials (Taizhou) Co., Ltd. | 10 |
4 |
| Air Products and Chemicals, Inc. | 1453 |
3 |
| Other owners | 175 |