- All sections
- C - Chemistrymetallurgy
- 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: 140
10-year publication summary
|
17
|
17
|
13
|
10
|
7
|
2
|
9
|
9
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1985 |
11 |
| Kabushiki Kaisha Riken | 286 |
7 |
| Aisin Takaoka Co., Ltd. | 98 |
5 |
| Akebono Brake Industry Co., Ltd. | 359 |
4 |
| Ferry-capitain | 10 |
4 |
| HD Hyundai Infracore Co., Ltd | 274 |
4 |
| Siemens AG | 24525 |
3 |
| LG Electronics Inc. | 72737 |
3 |
| Doosan Infracore Co., Ltd. | 309 |
3 |
| UD Trucks Corporation | 123 |
3 |
| Sediver | 9 |
3 |
| Toyota Motor Corporation | 31764 |
2 |
| Elkem AS | 61 |
2 |
| Hinode, Ltd. | 15 |
2 |
| MAHLE International GmbH | 2759 |
2 |
| Scania CV AB | 2386 |
2 |
| Shandong University of Technology | 118 |
2 |
| Toshiba Kikai Kabushiki Kaisha | 285 |
2 |
| Wartsila Finland Oy | 741 |
2 |
| GE Infrastructure Technology, LLC | 6209 |
2 |
| Other owners | 72 |