- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering
- C21D 1/63 - Quenching devices for bath quenching
Patent holdings for IPC class C21D 1/63
Total number of patents in this class: 139
10-year publication summary
|
7
|
7
|
15
|
11
|
15
|
5
|
15
|
5
|
13
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7660 |
26 |
| Danieli & C. Officine Meccaniche S.p.A. | 721 |
9 |
| NTN Corporation | 4935 |
6 |
| NSK Ltd. | 2848 |
6 |
| Temper Corporation | 30 |
5 |
| NV Bekaert SA | 725 |
4 |
| Voestalpine Schienen GmbH | 14 |
4 |
| Chugai Ro Co., Ltd. | 133 |
3 |
| Rolls-Royce Corporation | 1684 |
3 |
| Temper Axle Products Corporation | 72 |
3 |
| ZF Friedrichshafen AG | 7268 |
2 |
| Ajax Tocco Magnethermic Corporation | 94 |
2 |
| ArcelorMittal | 2749 |
2 |
| Fives Stein | 107 |
2 |
| Houghton Technical Corp. | 102 |
2 |
| Neturen Co., Ltd. | 198 |
2 |
| Neturen Takuto Co., Ltd. | 5 |
2 |
| POSCO | 2143 |
2 |
| POSCO Co., Ltd. | 2031 |
2 |
| Safran Landing Systems Canada Inc. / Safran Systemes D'atterrissage Canada Inc. | 103 |
2 |
| Other owners | 50 |