- 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 1/673 - Quenching devices for die quenching
Patent holdings for IPC class C21D 1/673
Total number of patents in this class: 722
10-year publication summary
|
82
|
64
|
68
|
48
|
41
|
37
|
27
|
51
|
47
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2672 |
123 |
| ThyssenKrupp Steel Europe AG | 990 |
57 |
| Nippon Steel Corporation | 6871 |
37 |
| Voestalpine Stahl GmbH | 388 |
32 |
| Schwartz GmbH | 60 |
23 |
| Voestalpine Metal Forming GmbH | 84 |
22 |
| Autotech Engineering S.L. | 185 |
21 |
| ThyssenKrupp AG | 3409 |
19 |
| Benteler Automobiltechnik GmbH | 305 |
17 |
| JFE Steel Corporation | 7527 |
17 |
| Bayerische Motoren Werke Aktiengesellschaft | 15272 |
16 |
| Magna International Inc. | 1195 |
16 |
| Tata Steel Ijmuiden B.V. | 326 |
15 |
| ArcelorMittal Investigacion y Desarrollo SL | 207 |
13 |
| Volkswagen AG | 7461 |
12 |
| Gestamp HardTech AB | 98 |
11 |
| GM Global Technology Operations LLC | 16124 |
10 |
| Ford Global Technologies, LLC | 21509 |
10 |
| POSCO Co., Ltd. | 2012 |
10 |
| Salzgitter Flachstahl GmbH | 163 |
8 |
| Other owners | 233 |