- 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 22/73 - 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 characterised by the process
Patent holdings for IPC class C23C 22/73
Total number of patents in this class: 291
10-year publication summary
|
23
|
35
|
28
|
23
|
28
|
23
|
27
|
15
|
22
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Henkel AG & Co. KGaA | 10343 |
48 |
| Chemetall GmbH | 381 |
30 |
| PPG Industries Ohio, Inc. | 3444 |
17 |
| The Boeing Company | 19909 |
9 |
| Novelis Inc. | 704 |
6 |
| Chemeon Surface Technology, LLC | 21 |
5 |
| JFE Steel Corporation | 6549 |
5 |
| POSCO Co., Ltd. | 1298 |
5 |
| Rtx Corporation | 9094 |
5 |
| Atotech Deutschland GmbH | 566 |
4 |
| Nihon Parkerizing Co., Ltd. | 281 |
4 |
| Arconic Technologies LLC | 231 |
4 |
| The Regents of the University of California | 19503 |
3 |
| Centre National de La Recherche Scientifique | 10091 |
3 |
| Entegris, Inc. | 1809 |
3 |
| Goodrich Corporation | 2086 |
3 |
| Nippon Steel Corporation | 6000 |
3 |
| Nisshin Steel Co., Ltd. | 398 |
3 |
| REM Technologies, Inc. | 16 |
3 |
| Rhodia Operations | 1588 |
3 |
| Other owners | 125 |