- 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: 146
10-year publication summary
|
11
|
17
|
17
|
13
|
10
|
7
|
2
|
9
|
9
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 2175 |
12 |
| Kabushiki Kaisha Riken | 265 |
7 |
| Aisin Takaoka Co., Ltd. | 101 |
5 |
| Akebono Brake Industry Co., Ltd. | 354 |
4 |
| Ferry-capitain | 10 |
4 |
| HD Hyundai Infracore Co., Ltd | 252 |
4 |
| Siemens AG | 24990 |
3 |
| LG Electronics Inc. | 69257 |
3 |
| Doosan Infracore Co., Ltd. | 313 |
3 |
| UD Trucks Corporation | 137 |
3 |
| Toyota Motor Corporation | 28582 |
2 |
| Hyundai Motor Company | 19021 |
2 |
| Elkem AS | 66 |
2 |
| Federal-Mogul Burscheid GmbH | 284 |
2 |
| MAHLE International GmbH | 2670 |
2 |
| Scania CV AB | 2330 |
2 |
| Shandong University of Technology | 113 |
2 |
| Toshiba Kikai Kabushiki Kaisha | 300 |
2 |
| Wartsila Finland Oy | 740 |
2 |
| GE Infrastructure Technology, LLC | 5873 |
2 |
| Other owners | 78 |