- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 1/21 - Arrangement of devices for discharging
Patent holdings for IPC class F27B 1/21
Total number of patents in this class: 54
10-year publication summary
|
5
|
4
|
5
|
3
|
3
|
4
|
7
|
3
|
6
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Primetals Technologies Austria GmbH | 573 |
8 |
| TMT Tapping-Measuring-Technology GmbH | 13 |
5 |
| Hybrit Development AB | 72 |
4 |
| POSCO | 2147 |
3 |
| S.A. Lhoist Recherche et Developpement | 205 |
3 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
2 |
| HYL Technologies, S.A. de C.V. | 46 |
2 |
| Midrex Technologies, Inc. | 118 |
2 |
| Nucor Corporation | 418 |
2 |
| Vicat | 102 |
2 |
| Harbisonwalker International Holdings, Inc. | 54 |
2 |
| ONEJOON GmbH | 35 |
2 |
| Aisin Takaoka Co., Ltd. | 98 |
1 |
| Eugene Technology Co., Ltd. | 183 |
1 |
| Itrec B.V. | 504 |
1 |
| Nippon Electrode Company, Ltd. | 23 |
1 |
| Nippon Steel Corporation | 6843 |
1 |
| Refractory Intellectual Property GmbH & Co. KG | 564 |
1 |
| SMS Group GmbH | 1194 |
1 |
| Solex Thermal Science Inc. | 18 |
1 |
| Other owners | 9 |