- 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 22/06 - 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
Patent holdings for IPC class C23C 22/06
Total number of patents in this class: 189
10-year publication summary
13
|
14
|
8
|
10
|
33
|
22
|
6
|
8
|
6
|
2
|
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 |
ArcelorMittal Investigacion y Desarrollo SL | 209 |
12 |
POSCO | 2222 |
11 |
Chemetall GmbH | 382 |
9 |
JFE Steel Corporation | 6067 |
9 |
ArcelorMittal | 1887 |
7 |
PPG Industries Ohio, Inc. | 3430 |
6 |
Nihon Parkerizing Co., Ltd. | 274 |
6 |
Nippon Steel Corporation | 5649 |
6 |
Shenzhen Hongchangfa Technology Co., Ltd. | 20 |
5 |
Nippon Paint Co., Ltd. | 105 |
4 |
POSCO Co., Ltd. | 1059 |
4 |
Shenzhen Hengzhaozhi Technology Co., Ltd. | 64 |
4 |
BASF SE | 19740 |
3 |
Atotech Deutschland GmbH | 586 |
3 |
Ewald Dorken AG | 266 |
3 |
MacDermid Enthone Inc. | 237 |
3 |
Shenzhen Yingheng Technology Co., Ltd. | 13 |
3 |
Advanced Technologies, Inc. | 9 |
2 |
Applied Membrane Technology, Inc. | 12 |
2 |
Other owners | 73 |