- 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: 50
10-year publication summary
|
3
|
1
|
3
|
4
|
7
|
3
|
1
|
4
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Luossavaara-Kiirunavaara AB | 115 |
10 |
| JP Steel Plantech Co. | 83 |
4 |
| Tundra Composites, LLC | 72 |
3 |
| Paul Wurth S.A. | 418 |
2 |
| Primetals Technologies Austria GmbH | 537 |
2 |
| Liaoning Upcera Co., Ltd. | 14 |
2 |
| Zhongye Changtian International Engineering Co., Ltd. | 78 |
2 |
| Zhuzhou Ruideer Metallurgical Equipment Manufacturing Co., Ltd. | 5 |
2 |
| LG Chem, Ltd. | 17636 |
1 |
| Corning Incorporated | 10283 |
1 |
| Siemens VAI Metals Technologies GmbH | 222 |
1 |
| Tsinghua University | 5940 |
1 |
| ALD Vacuum Technologies GmbH | 138 |
1 |
| Desktop Metal, Inc. | 287 |
1 |
| JFE Steel Corporation | 6874 |
1 |
| Jiangsu Huadong Institute of Li-ion Battery Co. Ltd. | 106 |
1 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 55 |
1 |
| Outotec Oyj | 278 |
1 |
| POSCO | 2184 |
1 |
| Primetals Technologies Japan, Ltd. | 166 |
1 |
| Other owners | 11 |