- 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: 626
10-year publication summary
|
65
|
54
|
64
|
66
|
43
|
40
|
29
|
38
|
33
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9483 |
45 |
| General Electric Company | 13859 |
16 |
| Nissan Motor Co., Ltd. | 12572 |
14 |
| Siemens AG | 24353 |
13 |
| Siemens Energy Global GmbH & Co. KG | 3026 |
12 |
| Bayerische Motoren Werke Aktiengesellschaft | 14506 |
11 |
| Tenneco Inc | 211 |
11 |
| GE Infrastructure Technology, LLC | 6252 |
11 |
| Ford Global Technologies, LLC | 20755 |
9 |
| Safran Aircraft Engines | 6317 |
9 |
| Caterpillar Inc. | 9644 |
8 |
| Nippon Steel Corporation | 6396 |
8 |
| Rolls-Royce Corporation | 1760 |
8 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 134 |
7 |
| SMS Group GmbH | 1134 |
7 |
| Tocalo Co., Ltd. | 105 |
7 |
| The University of Liverpool | 310 |
7 |
| Ford Motor Company | 2707 |
6 |
| Oerlikon Surface Solutions AG, Pfaffikon | 549 |
6 |
| Daimler AG | 3351 |
5 |
| Other owners | 406 |