- 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: 660
10-year publication summary
|
64
|
65
|
73
|
61
|
48
|
39
|
35
|
50
|
33
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9313 |
41 |
| General Electric Company | 13830 |
26 |
| Tocalo Co., Ltd. | 103 |
24 |
| GE Infrastructure Technology, LLC | 6196 |
14 |
| Siemens AG | 24547 |
13 |
| Caterpillar Inc. | 9509 |
12 |
| Nippon Steel & Sumikin Hardfacing Co., Ltd. | 22 |
10 |
| Siemens Energy Global GmbH & Co. KG | 2923 |
10 |
| Nippon Steel Corporation | 6181 |
9 |
| Federal-Mogul Burscheid GmbH | 283 |
8 |
| Praxair S.T. Technology, Inc. | 130 |
8 |
| Safran Aircraft Engines | 6250 |
8 |
| Applied Materials, Inc. | 18433 |
7 |
| Ford Global Technologies, LLC | 20487 |
7 |
| Nissan Motor Co., Ltd. | 12391 |
7 |
| SMS Group GmbH | 1113 |
7 |
| The University of Liverpool | 303 |
7 |
| Tenneco Inc | 285 |
7 |
| Hamilton Sundstrand Corporation | 4834 |
6 |
| Rolls-Royce Corporation | 1727 |
6 |
| Other owners | 423 |