- 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 22/83 - Chemical after-treatment
Patent holdings for IPC class C23C 22/83
Total number of patents in this class: 388
10-year publication summary
|
23
|
39
|
20
|
32
|
37
|
12
|
10
|
7
|
7
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Henkel AG & Co. KGaA | 10743 |
43 |
| Chemetall GmbH | 372 |
41 |
| PPG Industries Ohio, Inc. | 3318 |
29 |
| PRC-DeSoto International, Inc. | 571 |
15 |
| Atotech Deutschland GmbH | 522 |
15 |
| Nihon Parkerizing Co., Ltd. | 297 |
13 |
| JFE Steel Corporation | 7599 |
12 |
| Rhodia Operations | 1487 |
7 |
| Hamilton Sundstrand Corporation | 5013 |
5 |
| Mecaprotec Industries | 10 |
5 |
| Nippon Steel Corporation | 6945 |
5 |
| Rtx Corporation | 10141 |
5 |
| BASF SE | 21320 |
4 |
| DIPSOL Chemicals Co., Ltd. | 60 |
4 |
| Nippon Paint Surf Chemicals Co., Ltd. | 99 |
4 |
| Taisei Plas Co., Ltd. | 41 |
4 |
| Toyo Kohan Co., Ltd. | 437 |
4 |
| The Boeing Company | 20196 |
3 |
| a et a Mader | 27 |
3 |
| ArcelorMittal | 2720 |
3 |
| Other owners | 164 |