- 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 22/03 - 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 non-aqueous solutions containing phosphorus compounds
Patent holdings for IPC class C23C 22/03
Total number of patents in this class: 43
10-year publication summary
|
3
|
0
|
3
|
3
|
2
|
4
|
1
|
4
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6334 |
5 |
| Novelis Inc. | 755 |
4 |
| Toto Ltd. | 1208 |
3 |
| Quaker Chemical Corporation | 219 |
2 |
| Surfactis Technologies | 11 |
2 |
| Sumitomo Electric Industries, Ltd. | 15593 |
1 |
| FUJIFILM Corporation | 29543 |
1 |
| Sumitomo Wiring Systems, Ltd. | 10444 |
1 |
| PPG Industries Ohio, Inc. | 3443 |
1 |
| Northwestern University | 3408 |
1 |
| AutoNetworks Technologies, Ltd. | 6648 |
1 |
| Biological Dynamics, Inc. | 38 |
1 |
| Höganäs AB | 308 |
1 |
| IFP | 155 |
1 |
| Johnson Matthey Public Limited Company | 1867 |
1 |
| Kyushu University, National University Corporation | 1658 |
1 |
| MacDermid Enthone Inc. | 239 |
1 |
| POSCO Co., Ltd. | 1571 |
1 |
| Rhodia Operations | 1587 |
1 |
| Rolex S.A. | 674 |
1 |
| Other owners | 12 |