- 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 22/47 - 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 oxalates containing also phosphates
Patent holdings for IPC class C23C 22/47
Total number of patents in this class: 24
10-year publication summary
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Centre National de La Recherche Scientifique | 9632 |
3 |
Universite de Pau et des Pays de L'adour | 85 |
3 |
Soule Peintures Industrielles Aero | 3 |
3 |
DIPSOL Chemicals Co., Ltd. | 57 |
2 |
Nihon Parkerizing Co., Ltd. | 274 |
2 |
BASF SE | 19740 |
1 |
Komatsu Ltd. | 4265 |
1 |
ChemTreat, Inc. | 198 |
1 |
Cotec Corporation | 2 |
1 |
Enthone Inc. | 65 |
1 |
Goertek Inc. | 2477 |
1 |
Nippon Kazai Co., Ltd. | 3 |
1 |
Nippon Steel Corporation | 5649 |
1 |
POSCO Co., Ltd. | 1059 |
1 |
Shenzhen Hengzhaozhi Technology Co., Ltd. | 64 |
1 |
Atotech Deutschland GmbH & Co. KG | 354 |
1 |
Other owners | 0 |