- All sections
- C - Chemistry; metallurgy
- C23C - Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 2/28 - Thermal after-treatment, e.g. treatment in oil bath
Patent holdings for IPC class C23C 2/28
Total number of patents in this class: 1418
10-year publication summary
|
123
|
114
|
120
|
122
|
110
|
105
|
118
|
91
|
133
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6527 |
374 |
| Nippon Steel Corporation | 5982 |
270 |
| ArcelorMittal | 2047 |
142 |
| POSCO Co., Ltd. | 1290 |
130 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
75 |
| POSCO | 2204 |
62 |
| ThyssenKrupp Steel Europe AG | 953 |
49 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
27 |
| Hyundai Steel Company | 348 |
18 |
| BlueScope Steel Limited | 216 |
17 |
| Voestalpine Stahl GmbH | 340 |
16 |
| ArcelorMittal France | 102 |
13 |
| Tata Steel Ijmuiden B.V. | 300 |
13 |
| Kobe Steel, Ltd. | 862 |
11 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
10 |
| Baoshan Iron & Steel Co., Ltd. | 888 |
10 |
| JFE Galvanizing & Coating Co., Ltd. | 32 |
9 |
| Nucor Corporation | 421 |
9 |
| Salzgitter Flachstahl GmbH | 156 |
9 |
| ThyssenKrupp AG | 3207 |
9 |
| Other owners | 145 |