- 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: 628
10-year publication summary
|
65
|
54
|
64
|
66
|
43
|
40
|
29
|
38
|
33
|
29
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9611 |
46 |
| General Electric Company | 13827 |
16 |
| Nissan Motor Co., Ltd. | 12683 |
14 |
| Siemens AG | 24323 |
13 |
| Siemens Energy Global GmbH & Co. KG | 3096 |
12 |
| Bayerische Motoren Werke Aktiengesellschaft | 14735 |
11 |
| GE Infrastructure Technology, LLC | 6196 |
11 |
| Ford Global Technologies, LLC | 20962 |
9 |
| Safran Aircraft Engines | 6420 |
9 |
| Caterpillar Inc. | 9866 |
8 |
| Federal-Mogul Powertrain LLC | 267 |
8 |
| Nippon Steel Corporation | 6526 |
8 |
| Rolls-Royce Corporation | 1753 |
8 |
| Ford Motor Company | 2699 |
7 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 135 |
7 |
| SMS Group GmbH | 1142 |
7 |
| Tocalo Co., Ltd. | 107 |
7 |
| Oerlikon Surface Solutions AG, Pfaffikon | 547 |
6 |
| The University of Liverpool | 314 |
6 |
| Hilti Aktiengesellschaft | 3541 |
5 |
| Other owners | 410 |