- 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 1/84 - Controlled slow cooling
Patent holdings for IPC class C21D 1/84
Total number of patents in this class: 125
10-year publication summary
7
|
31
|
2
|
8
|
3
|
8
|
3
|
7
|
19
|
35
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
POSCO Co., Ltd. | 1059 |
19 |
Baoshan Iron & Steel Co., Ltd. | 832 |
14 |
Nippon Steel Corporation | 5649 |
12 |
JFE Steel Corporation | 6067 |
10 |
ArcelorMittal | 1887 |
5 |
The Boeing Company | 19843 |
3 |
Salzgitter Flachstahl GmbH | 155 |
3 |
Northwestern University | 3112 |
2 |
Aperam | 104 |
2 |
ThyssenKrupp Steel Europe AG | 924 |
2 |
Voestalpine Stahl GmbH | 311 |
2 |
Tecniforja - Forjagem e Estampagem de Peças Técnicas, Lda | 3 |
2 |
NIPPON STEEL Stainless Steel Corporation | 254 |
2 |
Jiangsu Shagang Group Co., Ltd. | 52 |
2 |
Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 32 |
2 |
Siemens AG | 24990 |
1 |
Caterpillar Inc. | 8877 |
1 |
Daimler AG | 3462 |
1 |
Battelle Energy Alliance, LLC | 569 |
1 |
AB SKF | 193 |
1 |
Other owners | 38 |