- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F27B - Furnaces, kilns, ovens, or retorts in general; open sintering or like apparatus
- F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
Patent holdings for IPC class F27B 21/08
Total number of patents in this class: 58
10-year publication summary
|
3
|
0
|
4
|
1
|
0
|
3
|
0
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Zhongye Changtian International Engineering Co., Ltd. | 75 |
14 |
| JFE Steel Corporation | 6538 |
8 |
| Nippon Steel Corporation | 5991 |
7 |
| POSCO | 2204 |
6 |
| Tokuden Co., Ltd. | 38 |
3 |
| China Metallurgical Engineering Co., Ltd. | 4 |
3 |
| Sinosteel Equipment & Engineering Co., Ltd. | 7 |
3 |
| JP Steel Plantech Co. | 81 |
2 |
| POSTECH Academy-industry Foundation | 1101 |
2 |
| Shandong Province Metallurgical Engineering Co., Ltd. | 2 |
2 |
| Alcoa Inc. | 300 |
1 |
| Fujico Co., Ltd. | 19 |
1 |
| Kurimoto, Ltd. | 91 |
1 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 58 |
1 |
| Nanjing Forestry University | 101 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
1 |
| Outotec (Finland) Oy | 489 |
1 |
| Metso Metals Oy | 223 |
1 |
| Other owners | 0 |