- All sections
- C - Chemistry; metallurgy
- C21D - Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making 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: 122
10-year publication summary
13
|
10
|
7
|
7
|
15
|
11
|
14
|
5
|
14
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JFE Steel Corporation | 6067 |
19 |
Danieli & C. Officine Meccaniche S.p.A. | 680 |
9 |
NTN Corporation | 5008 |
6 |
NV Bekaert SA | 750 |
4 |
Temper Corporation | 41 |
4 |
Voestalpine Schienen GmbH | 16 |
4 |
NSK Ltd. | 2719 |
3 |
Rolls-Royce Corporation | 1686 |
3 |
Temper Axle Products Corporation | 78 |
3 |
ZF Friedrichshafen AG | 6820 |
2 |
Ajax Tocco Magnethermic Corporation | 96 |
2 |
ArcelorMittal | 1887 |
2 |
Chugai Ro Co., Ltd. | 124 |
2 |
Houghton Technical Corp. | 115 |
2 |
Neturen Co., Ltd. | 193 |
2 |
Neturen Takuto Co., Ltd. | 3 |
2 |
POSCO | 2222 |
2 |
Safran Landing Systems Canada Inc. / Safran Systemes D'atterrissage Canada Inc. | 101 |
2 |
ZF Wind Power Antwerpen N.V. | 165 |
2 |
Safran Landing Systems UK Ltd | 165 |
2 |
Other owners | 45 |