- 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: 603
10-year publication summary
64
|
65
|
60
|
69
|
69
|
47
|
42
|
30
|
37
|
14
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rtx Corporation | 8674 |
43 |
General Electric Company | 18133 |
18 |
Siemens AG | 24990 |
18 |
Nissan Motor Co., Ltd. | 12249 |
17 |
GE Infrastructure Technology, LLC | 5873 |
12 |
Bayerische Motoren Werke Aktiengesellschaft | 13126 |
11 |
Tenneco Inc | 274 |
11 |
Ford Global Technologies, LLC | 19702 |
9 |
Siemens Energy Global GmbH & Co. KG | 2775 |
8 |
Ford Motor Company | 2817 |
7 |
Caterpillar Inc. | 8877 |
7 |
Nippon Steel Corporation | 5649 |
7 |
Rolls-Royce Corporation | 1686 |
7 |
Mitsubishi Heavy Industries Aero Engines, Ltd. | 121 |
6 |
Praxair S.T. Technology, Inc. | 133 |
6 |
Safran Aircraft Engines | 5739 |
6 |
Tocalo Co., Ltd. | 94 |
6 |
The University of Liverpool | 281 |
6 |
Daimler AG | 3462 |
5 |
Hilti Aktiengesellschaft | 3227 |
5 |
Other owners | 388 |