- All sections
- C - Chemistrymetallurgy
- C23C - Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 22/50 - Treatment of iron or alloys based thereon
Patent holdings for IPC class C23C 22/50
Total number of patents in this class: 151
10-year publication summary
|
15
|
12
|
13
|
19
|
13
|
15
|
10
|
7
|
2
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Henkel AG & Co. KGaA | 10574 |
15 |
| POSCO | 2187 |
11 |
| Toyo Kohan Co., Ltd. | 420 |
11 |
| JFE Steel Corporation | 6852 |
8 |
| Nippon Steel Corporation | 6255 |
7 |
| ArcelorMittal | 2289 |
6 |
| PPG Industries Ohio, Inc. | 3453 |
4 |
| Nihon Parkerizing Co., Ltd. | 288 |
4 |
| POSCO Co., Ltd. | 1568 |
4 |
| Aesculap AG | 1393 |
3 |
| Goodrich Corporation | 2129 |
3 |
| Voestalpine Stahl GmbH | 355 |
3 |
| Freiborne Industries, Inc. | 4 |
3 |
| Ethicon, Inc. | 1179 |
2 |
| Hyundai Steel Company | 427 |
2 |
| Poligrat GmbH | 9 |
2 |
| Yuken Industry Co., Ltd. | 63 |
2 |
| Halliburton Energy Services, Inc. | 20901 |
1 |
| BASF SE | 20915 |
1 |
| Bayer MaterialScience AG | 800 |
1 |
| Other owners | 58 |