- 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 4/18 - After-treatment
Patent holdings for IPC class C23C 4/18
Total number of patents in this class: 675
10-year publication summary
|
65
|
73
|
61
|
48
|
39
|
35
|
52
|
34
|
30
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9885 |
42 |
| General Electric Company | 13806 |
27 |
| Tocalo Co., Ltd. | 106 |
20 |
| GE Infrastructure Technology, LLC | 6206 |
15 |
| Siemens AG | 24199 |
12 |
| Caterpillar Inc. | 10151 |
12 |
| Siemens Energy Global GmbH & Co. KG | 3261 |
11 |
| Nippon Steel & Sumikin Hardfacing Co., Ltd. | 22 |
10 |
| Nippon Steel Corporation | 6703 |
9 |
| Praxair S.T. Technology, Inc. | 120 |
9 |
| Safran Aircraft Engines | 6551 |
9 |
| Federal-Mogul Burscheid GmbH | 280 |
8 |
| Applied Materials, Inc. | 20053 |
7 |
| Ford Global Technologies, LLC | 21296 |
7 |
| Nissan Motor Co., Ltd. | 12778 |
7 |
| SMS Group GmbH | 1169 |
7 |
| Hamilton Sundstrand Corporation | 5018 |
6 |
| Dai-Ichi High Frequency Co., Ltd. | 37 |
6 |
| Rolls-Royce Corporation | 1679 |
6 |
| Tokyo Electron Limited | 13553 |
5 |
| Other owners | 440 |