- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 3/19 - Arrangement of devices for discharging
Patent holdings for IPC class F27B 3/19
Total number of patents in this class: 86
10-year publication summary
|
6
|
4
|
4
|
4
|
2
|
3
|
1
|
3
|
7
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2317 |
11 |
| Pyrotek, Inc. | 200 |
5 |
| ATI Properties LLC | 204 |
4 |
| Hyundai Steel Company | 431 |
4 |
| Primetals Technologies Austria GmbH | 539 |
4 |
| SMS Siemag Aktiengesellschaft | 506 |
4 |
| Danieli & C. Officine Meccaniche S.p.A. | 718 |
3 |
| Siemens AG | 24421 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2875 |
2 |
| Korea Hydro & Nuclear Power Co., Ltd. | 467 |
2 |
| Process Technology International, Inc. | 4 |
2 |
| Refractory Intellectual Property GmbH & Co. KG | 541 |
2 |
| SABIC Global Technologies B.V. | 4359 |
2 |
| Seoul Engineering Co., Ltd. | 10 |
2 |
| Tounetsu Co., Ltd. | 28 |
2 |
| Momek Tappingmate AS | 2 |
2 |
| Hertha Metals, Inc. | 10 |
2 |
| Corning Incorporated | 10294 |
1 |
| Siemens VAI Metals Technologies GmbH | 221 |
1 |
| ABB Schweiz AG | 7023 |
1 |
| Other owners | 28 |