- 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 22/42 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing molybdates, tungstates or vanadates containing also phosphates
Patent holdings for IPC class C23C 22/42
Total number of patents in this class: 78
10-year publication summary
6
|
4
|
11
|
5
|
8
|
6
|
3
|
3
|
0
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JFE Steel Corporation | 6067 |
8 |
Nippon Steel Corporation | 5649 |
8 |
Nihon Parkerizing Co., Ltd. | 274 |
6 |
Nisshin Steel Co., Ltd. | 401 |
6 |
POSCO Co., Ltd. | 1059 |
6 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
5 |
Henkel AG & Co. KGaA | 10129 |
4 |
Chemetall GmbH | 382 |
4 |
Ewald Dorken AG | 266 |
3 |
NOROO Coil Coatings, Co., Ltd. | 18 |
2 |
Nippon Steel Coated Sheet Corporation | 26 |
2 |
Shenzhen Hengzhaozhi Technology Co., Ltd. | 64 |
2 |
TDK Corporation | 6306 |
1 |
Hamilton Sundstrand Corporation | 4525 |
1 |
PPG Industries Ohio, Inc. | 3430 |
1 |
Foxconn Technology Co., Ltd. | 123 |
1 |
BASF Coatings Japan Ltd. | 18 |
1 |
Coral Chemical Company | 4 |
1 |
Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | 6 |
1 |
Industrial Control Development, Inc. | 12 |
1 |
Other owners | 14 |