- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27D - Details or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace
- F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices
Patent holdings for IPC class F27D 21/00
Total number of patents in this class: 751
10-year publication summary
|
59
|
56
|
49
|
50
|
62
|
49
|
54
|
41
|
40
|
54
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7011 |
39 |
| Hatch Ltd. | 215 |
22 |
| ArcelorMittal | 2357 |
20 |
| Danieli & C. Officine Meccaniche S.p.A. | 713 |
13 |
| Primetals Technologies Austria GmbH | 546 |
13 |
| SMS Group GmbH | 1135 |
13 |
| Ivoclar Vivadent AG | 1052 |
12 |
| Paul Wurth S.A. | 419 |
12 |
| Outotec (Finland) Oy | 477 |
11 |
| PaneraTech, Inc. | 33 |
11 |
| POSCO | 2177 |
11 |
| Refractory Intellectual Property GmbH & Co. KG | 543 |
11 |
| Siemens AG | 24366 |
10 |
| Applied Materials, Inc. | 19072 |
10 |
| SMS Siemag Aktiengesellschaft | 504 |
10 |
| Tokyo Electron Limited | 13031 |
9 |
| Air Products and Chemicals, Inc. | 1450 |
9 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 490 |
9 |
| Metso Metals Oy | 208 |
9 |
| Illinois Tool Works Inc. | 11517 |
8 |
| Other owners | 489 |