- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 37/00 - Cast-iron alloys
Patent holdings for IPC class C22C 37/00
Total number of patents in this class: 147
10-year publication summary
|
13
|
8
|
12
|
6
|
10
|
7
|
7
|
5
|
5
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1971 |
22 |
| JFE Steel Corporation | 6965 |
10 |
| Tupy S.A. | 32 |
7 |
| Caterpillar Inc. | 9640 |
5 |
| Toshiba Kikai Kabushiki Kaisha | 282 |
4 |
| Kabushiki Kaisha Riken | 292 |
3 |
| TPR Co., Ltd. | 161 |
3 |
| TPR Industry Co., Ltd. | 50 |
3 |
| Nippon Steel Rolls Corporation | 5 |
3 |
| LG Electronics Inc. | 73588 |
2 |
| Hyundai Motor Company | 22369 |
2 |
| Asada Katan Chutetu-syo Co., Ltd. | 2 |
2 |
| Doosan Infracore Co., Ltd. | 309 |
2 |
| Federal-Mogul Burscheid GmbH | 283 |
2 |
| Henan Province Zynp Corporation | 2 |
2 |
| Kubota Corporation | 3986 |
2 |
| Newsouth Innovations Pty Limited | 599 |
2 |
| Scania CV AB | 2400 |
2 |
| T & e Pumps Ltd. | 5 |
2 |
| Tenova S.p.A. | 156 |
2 |
| Other owners | 65 |