- 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: 47
10-year publication summary
|
1
|
5
|
4
|
5
|
3
|
3
|
4
|
5
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Primetals Technologies Austria GmbH | 516 |
8 |
| TMT Tapping-Measuring-Technology GmbH | 13 |
5 |
| Danieli & C. Officine Meccaniche S.p.A. | 709 |
3 |
| POSCO | 2204 |
3 |
| Hybrit Development AB | 51 |
3 |
| HYL Technologies, S.A. de C.V. | 43 |
2 |
| Vicat | 93 |
2 |
| ONEJOON GmbH | 25 |
2 |
| Aisin Takaoka Co., Ltd. | 98 |
1 |
| Eugene Technology Co., Ltd. | 169 |
1 |
| Itrec B.V. | 497 |
1 |
| Midrex Technologies, Inc. | 103 |
1 |
| Nippon Electrode Company, Ltd. | 14 |
1 |
| Nippon Steel Corporation | 6038 |
1 |
| Nucor Corporation | 420 |
1 |
| S.A. Lhoist Recherche et Developpement | 169 |
1 |
| Schenck Process LLC | 73 |
1 |
| SMS Group GmbH | 1081 |
1 |
| Solex Thermal Science Inc. | 24 |
1 |
| Street Design Corp. | 6 |
1 |
| Other owners | 7 |