- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 37/04 - Cast-iron alloys containing spheroidal graphite
Patent holdings for IPC class C22C 37/04
Total number of patents in this class: 141
10-year publication summary
|
17
|
17
|
13
|
10
|
7
|
2
|
9
|
9
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 2021 |
12 |
| Kabushiki Kaisha Riken | 274 |
7 |
| Aisin Takaoka Co., Ltd. | 97 |
5 |
| Akebono Brake Industry Co., Ltd. | 361 |
4 |
| Ferry-capitain | 10 |
4 |
| HD Hyundai Infracore Co., Ltd | 262 |
4 |
| Siemens AG | 24565 |
3 |
| LG Electronics Inc. | 71039 |
3 |
| Doosan Infracore Co., Ltd. | 309 |
3 |
| UD Trucks Corporation | 129 |
3 |
| Toyota Motor Corporation | 30455 |
2 |
| Elkem AS | 63 |
2 |
| Hinode, Ltd. | 14 |
2 |
| MAHLE International GmbH | 2705 |
2 |
| Scania CV AB | 2378 |
2 |
| Shandong University of Technology | 116 |
2 |
| Toshiba Kikai Kabushiki Kaisha | 297 |
2 |
| Wartsila Finland Oy | 740 |
2 |
| GE Infrastructure Technology, LLC | 6114 |
2 |
| CRRC Qishuyan Institute Co., Ltd. | 54 |
2 |
| Other owners | 73 |