- 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 1/673 - Quenching devices for die quenching
Patent holdings for IPC class C21D 1/673
Total number of patents in this class: 632
10-year publication summary
|
57
|
47
|
82
|
64
|
68
|
48
|
40
|
36
|
20
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 1887 |
76 |
| ThyssenKrupp Steel Europe AG | 924 |
48 |
| Nippon Steel Corporation | 5649 |
32 |
| Voestalpine Stahl GmbH | 311 |
30 |
| Schwartz GmbH | 58 |
23 |
| ThyssenKrupp AG | 3086 |
21 |
| Benteler Automobiltechnik GmbH | 258 |
19 |
| JFE Steel Corporation | 6067 |
18 |
| Voestalpine Metal Forming GmbH | 56 |
17 |
| Tata Steel Ijmuiden B.V. | 283 |
15 |
| Autotech Engineering S.L. | 123 |
15 |
| Bayerische Motoren Werke Aktiengesellschaft | 13126 |
14 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
14 |
| Gestamp HardTech AB | 112 |
12 |
| Volkswagen AG | 6966 |
12 |
| Magna International Inc. | 1236 |
11 |
| Ford Global Technologies, LLC | 19702 |
10 |
| GM Global Technology Operations LLC | 13620 |
9 |
| POSCO Co., Ltd. | 1059 |
8 |
| Salzgitter Flachstahl GmbH | 155 |
8 |
| Other owners | 220 |