- All sections
- C - Chemistry; metallurgy
- C23C - Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating 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: 611
10-year publication summary
|
65
|
60
|
69
|
69
|
47
|
43
|
30
|
41
|
33
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9069 |
43 |
| General Electric Company | 17801 |
16 |
| Nissan Motor Co., Ltd. | 12320 |
16 |
| Siemens AG | 24575 |
14 |
| Bayerische Motoren Werke Aktiengesellschaft | 13816 |
11 |
| Tenneco Inc | 283 |
11 |
| GE Infrastructure Technology, LLC | 6103 |
11 |
| Ford Global Technologies, LLC | 20039 |
9 |
| Caterpillar Inc. | 9149 |
8 |
| Nippon Steel Corporation | 5982 |
8 |
| Rolls-Royce Corporation | 1718 |
8 |
| Siemens Energy Global GmbH & Co. KG | 2822 |
8 |
| Ford Motor Company | 2733 |
7 |
| SMS Group GmbH | 1077 |
7 |
| The University of Liverpool | 294 |
7 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 125 |
6 |
| Safran Aircraft Engines | 6021 |
6 |
| Tocalo Co., Ltd. | 99 |
6 |
| Daimler AG | 3419 |
5 |
| Hilti Aktiengesellschaft | 3363 |
5 |
| Other owners | 399 |