- 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 22/05 - 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
Patent holdings for IPC class C23C 22/05
Total number of patents in this class: 267
10-year publication summary
|
26
|
22
|
27
|
31
|
27
|
11
|
14
|
10
|
13
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2272 |
15 |
| Nippon Steel Corporation | 6207 |
10 |
| Nihon Parkerizing Co., Ltd. | 287 |
8 |
| POSCO | 2186 |
7 |
| Henkel AG & Co. KGaA | 10535 |
6 |
| JFE Steel Corporation | 6816 |
6 |
| Chemetall GmbH | 383 |
5 |
| Nanovis, LLC | 36 |
5 |
| Nisshin Steel Co., Ltd. | 394 |
5 |
| Shenzhen Hengzhaozhi Technology Co., Ltd. | 64 |
5 |
| The Regents of the University of California | 19868 |
4 |
| The Boeing Company | 20042 |
4 |
| Baoshan Iron & Steel Co., Ltd. | 959 |
4 |
| Shikoku Chemicals Corporation | 91 |
4 |
| Hewlett-Packard Development Company, L.P. | 25903 |
3 |
| Lam Research Corporation | 5217 |
3 |
| PPG Industries Ohio, Inc. | 3457 |
3 |
| Alantum Europe GmbH | 38 |
3 |
| Arizona Board of Regents on behalf of Arizona State University | 2605 |
3 |
| MacDermid Enthone Inc. | 238 |
3 |
| Other owners | 161 |