- 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 22/20 - Orthophosphates containing aluminium cations
Patent holdings for IPC class C23C 22/20
Total number of patents in this class: 64
10-year publication summary
|
6
|
7
|
2
|
1
|
3
|
6
|
6
|
4
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7247 |
18 |
| POSCO Co., Ltd. | 1647 |
10 |
| Nippon Steel Corporation | 6666 |
9 |
| Yuken Industry Co., Ltd. | 63 |
3 |
| Henkel AG & Co. KGaA | 10714 |
2 |
| Baoshan Iron & Steel Co., Ltd. | 1060 |
2 |
| ChemTreat, Inc. | 253 |
2 |
| DIPSOL Chemicals Co., Ltd. | 60 |
2 |
| Rolls-Royce PLC | 3178 |
1 |
| PPG Industries Ohio, Inc. | 3382 |
1 |
| Atotech Deutschland GmbH | 539 |
1 |
| Chemetall GmbH | 388 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2846 |
1 |
| MTU Aero Engines GmbH | 450 |
1 |
| Nihon Parkerizing Co., Ltd. | 292 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
1 |
| Praxair S.T. Technology, Inc. | 120 |
1 |
| Rembrandtin Lack GmbH Nfg. KG | 5 |
1 |
| Tata Steel Limited | 168 |
1 |
| ThyssenKrupp Steel Europe AG | 976 |
1 |
| Other owners | 4 |