- 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 22/78 - Pretreatment of the material to be coated
Patent holdings for IPC class C23C 22/78
Total number of patents in this class: 439
10-year publication summary
29
|
36
|
50
|
44
|
59
|
35
|
40
|
26
|
30
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Henkel AG & Co. KGaA | 10129 |
47 |
Chemetall GmbH | 382 |
28 |
JFE Steel Corporation | 6067 |
26 |
PPG Industries Ohio, Inc. | 3430 |
23 |
Nippon Steel Corporation | 5649 |
21 |
ArcelorMittal | 1887 |
19 |
Nihon Parkerizing Co., Ltd. | 274 |
15 |
Novelis Inc. | 656 |
8 |
Nippon Paint Co., Ltd. | 105 |
7 |
The Boeing Company | 19843 |
6 |
Hydro Aluminium Rolled Products GmbH | 118 |
6 |
PRC-DeSoto International, Inc. | 567 |
5 |
Nippon Paint Surf Chemicals Co., Ltd. | 82 |
5 |
POSCO | 2222 |
5 |
ThyssenKrupp AG | 3086 |
5 |
ThyssenKrupp Steel Europe AG | 924 |
5 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
4 |
Nanovis, LLC | 31 |
4 |
Nisshin Steel Co., Ltd. | 401 |
4 |
Santoku Corporation | 85 |
4 |
Other owners | 192 |