- 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 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
Patent holdings for IPC class C23C 4/02
Total number of patents in this class: 621
10-year publication summary
|
65
|
60
|
69
|
69
|
47
|
43
|
30
|
42
|
33
|
18
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9313 |
44 |
| General Electric Company | 13830 |
16 |
| Siemens AG | 24547 |
14 |
| Nissan Motor Co., Ltd. | 12391 |
14 |
| Bayerische Motoren Werke Aktiengesellschaft | 14246 |
11 |
| Tenneco Inc | 285 |
11 |
| GE Infrastructure Technology, LLC | 6196 |
11 |
| Siemens Energy Global GmbH & Co. KG | 2923 |
11 |
| Ford Global Technologies, LLC | 20487 |
9 |
| Caterpillar Inc. | 9509 |
8 |
| Nippon Steel Corporation | 6181 |
8 |
| Rolls-Royce Corporation | 1727 |
8 |
| Safran Aircraft Engines | 6250 |
8 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 133 |
7 |
| SMS Group GmbH | 1113 |
7 |
| Tocalo Co., Ltd. | 103 |
7 |
| The University of Liverpool | 303 |
7 |
| Ford Motor Company | 2708 |
6 |
| Daimler AG | 3403 |
5 |
| Hilti Aktiengesellschaft | 3459 |
5 |
| Other owners | 404 |