- 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: 705
10-year publication summary
|
77
|
60
|
65
|
46
|
41
|
32
|
25
|
45
|
40
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2510 |
114 |
| ThyssenKrupp Steel Europe AG | 977 |
56 |
| Nippon Steel Corporation | 6673 |
37 |
| Voestalpine Stahl GmbH | 378 |
31 |
| Schwartz GmbH | 58 |
23 |
| ThyssenKrupp AG | 3448 |
20 |
| Voestalpine Metal Forming GmbH | 78 |
20 |
| Autotech Engineering S.L. | 173 |
20 |
| Benteler Automobiltechnik GmbH | 301 |
17 |
| JFE Steel Corporation | 7259 |
17 |
| Bayerische Motoren Werke Aktiengesellschaft | 14949 |
16 |
| Magna International Inc. | 1203 |
16 |
| Tata Steel Ijmuiden B.V. | 318 |
15 |
| ArcelorMittal Investigacion y Desarrollo SL | 208 |
13 |
| Volkswagen AG | 7403 |
12 |
| Gestamp HardTech AB | 102 |
11 |
| GM Global Technology Operations LLC | 15700 |
10 |
| Ford Global Technologies, LLC | 21196 |
10 |
| POSCO Co., Ltd. | 1649 |
9 |
| Salzgitter Flachstahl GmbH | 161 |
8 |
| Other owners | 230 |