- All sections
- B - Performing operationstransporting
- B21J - Forginghammeringpressing metalrivetingforge furnaces
- B21J 7/28 - Drives for hammersTransmission means therefor for power hammers operated by hydraulic or liquid pressure
Patent holdings for IPC class B21J 7/28
Total number of patents in this class: 23
10-year publication summary
|
1
|
2
|
1
|
7
|
3
|
2
|
1
|
3
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cell Impact AB | 20 |
12 |
| Langenstein & Schemann GmbH | 42 |
4 |
| GFM - GmbH | 33 |
2 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
1 |
| Beijing Ningyuan Xingda Technology Development Co., Ltd. | 1 |
1 |
| Jiangsu Hengfan Heavy Industry Technology Co., Ltd. | 1 |
1 |
| Jiangsu Huawei Machinery Manufacturing Co., Ltd. | 5 |
1 |
| Obschestvo S Ogranichennoy Otvetstvennostyu "nauchno-proizvodstvennoe Predpriyatie "molot" | 1 |
1 |
| Other owners | 0 |