- All sections
- C - Chemistrymetallurgy
- C23C - Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 8/66 - Carburising of ferrous surfaces
Patent holdings for IPC class C23C 8/66
Total number of patents in this class: 25
10-year publication summary
|
2
|
5
|
2
|
2
|
1
|
1
|
3
|
3
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15521 |
2 |
| NSK Ltd. | 2791 |
2 |
| Pusan National University Industry-University Cooperation Foundation | 678 |
2 |
| Commonwealth Steel Company Pty Ltd | 5 |
2 |
| Caterpillar Inc. | 9593 |
1 |
| Hilti Aktiengesellschaft | 3498 |
1 |
| Aktiebolaget SKF | 2956 |
1 |
| Aktien-Gesellschaft; der Dillinger Hüttenwerke | 39 |
1 |
| Asco Industries | 2 |
1 |
| China University of Mining and Technology | 1257 |
1 |
| Fuji Kihan Co., Ltd. | 25 |
1 |
| Hyundai Steel Company | 430 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2870 |
1 |
| MAHLE International GmbH | 2781 |
1 |
| National University Corporation Kumamoto University | 386 |
1 |
| Soochow University | 1739 |
1 |
| ThyssenKrupp Steel Europe AG | 956 |
1 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12781 |
1 |
| MA FEI | 5 |
1 |
| Hydromecanique et Frottement | 112 |
1 |
| Other owners | 1 |