- 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 22/50 - Treatment of iron or alloys based thereon
Patent holdings for IPC class C23C 22/50
Total number of patents in this class: 156
10-year publication summary
9
|
15
|
12
|
13
|
18
|
13
|
15
|
10
|
7
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Henkel AG & Co. KGaA | 10129 |
14 |
POSCO | 2222 |
11 |
Toyo Kohan Co., Ltd. | 413 |
11 |
JFE Steel Corporation | 6067 |
8 |
ArcelorMittal | 1887 |
6 |
PPG Industries Ohio, Inc. | 3430 |
5 |
Nihon Parkerizing Co., Ltd. | 274 |
5 |
Nippon Steel Corporation | 5649 |
5 |
Voestalpine Stahl GmbH | 311 |
4 |
Aesculap AG | 1306 |
3 |
POSCO Co., Ltd. | 1059 |
3 |
Freiborne Industries, Inc. | 4 |
3 |
The United States of America as represented by the Secretary of the Navy | 2734 |
2 |
Ethicon, Inc. | 1310 |
2 |
Atotech Deutschland GmbH | 586 |
2 |
Chemetall GmbH | 382 |
2 |
Goodrich Corporation | 2081 |
2 |
Hyundai Steel Company | 310 |
2 |
Poligrat GmbH | 11 |
2 |
Yuken Industry Co., Ltd. | 60 |
2 |
Other owners | 62 |