- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F27B - Furnaces, kilns, ovens or retorts in generalopen sintering or like apparatus
- F27B 21/00 - Open or uncovered sintering apparatusOther heat-treatment apparatus of like construction
Patent holdings for IPC class F27B 21/00
Total number of patents in this class: 51
10-year publication summary
|
1
|
3
|
4
|
7
|
4
|
1
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4
|
1
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3
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Luossavaara-Kiirunavaara AB | 127 |
11 |
| JP Steel Plantech Co. | 81 |
4 |
| Zhongye Changtian International Engineering Co., Ltd. | 78 |
3 |
| Paul Wurth S.A. | 430 |
2 |
| Primetals Technologies Austria GmbH | 566 |
2 |
| Tundra Composites, LLC | 69 |
2 |
| Liaoning Upcera Co., Ltd. | 14 |
2 |
| Zhuzhou Ruideer Metallurgical Equipment Manufacturing Co., Ltd. | 5 |
2 |
| LG Chem, Ltd. | 17840 |
1 |
| Corning Incorporated | 10426 |
1 |
| Siemens VAI Metals Technologies GmbH | 206 |
1 |
| Tsinghua University | 6112 |
1 |
| ALD Vacuum Technologies GmbH | 139 |
1 |
| Desktop Metal, Inc. | 271 |
1 |
| JFE Steel Corporation | 7362 |
1 |
| Jiangsu Huadong Institute of Li-ion Battery Co. Ltd. | 106 |
1 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 52 |
1 |
| Outotec Oyj | 239 |
1 |
| POSCO | 2155 |
1 |
| Primetals Technologies Japan, Ltd. | 179 |
1 |
| Other owners | 11 |