- 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 1/70 - Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
Patent holdings for IPC class C21D 1/70
Total number of patents in this class: 107
10-year publication summary
|
4
|
2
|
5
|
12
|
10
|
5
|
7
|
2
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2402 |
15 |
| Nippon Steel Corporation | 6514 |
13 |
| JFE Steel Corporation | 7074 |
5 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
4 |
| ThyssenKrupp AG | 3349 |
4 |
| ThyssenKrupp Steel Europe AG | 962 |
4 |
| Nihon Parkerizing Co., Ltd. | 291 |
3 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
3 |
| POSCO | 2173 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8900 |
2 |
| Nissan Motor Co., Ltd. | 12673 |
2 |
| NTN Corporation | 4964 |
2 |
| AK Steel Properties, Inc. | 75 |
2 |
| Audi AG | 7400 |
2 |
| Salzgitter Flachstahl GmbH | 162 |
2 |
| Sumitomo Metal Industries, Ltd. | 360 |
2 |
| Tata Steel Nederland Technology BV | 153 |
2 |
| Tateho Chemical Industries Co., Ltd. | 59 |
2 |
| Volkswagen AG | 7384 |
2 |
| Takara Standard Co.,Ltd. | 5 |
2 |
| Other owners | 31 |