- 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 22/73 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
Patent holdings for IPC class C23C 22/73
Total number of patents in this class: 276
10-year publication summary
29
|
23
|
35
|
28
|
23
|
28
|
23
|
27
|
15
|
6
|
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 |
26 |
PPG Industries Ohio, Inc. | 3430 |
17 |
The Boeing Company | 19843 |
9 |
Novelis Inc. | 656 |
6 |
JFE Steel Corporation | 6067 |
5 |
POSCO Co., Ltd. | 1059 |
5 |
Rtx Corporation | 8674 |
5 |
Centre National de La Recherche Scientifique | 9632 |
4 |
Atotech Deutschland GmbH | 586 |
4 |
Nihon Parkerizing Co., Ltd. | 274 |
4 |
Arconic Technologies LLC | 219 |
4 |
Entegris, Inc. | 1736 |
3 |
Goodrich Corporation | 2081 |
3 |
Nippon Steel Corporation | 5649 |
3 |
Nisshin Steel Co., Ltd. | 401 |
3 |
REM Technologies, Inc. | 16 |
3 |
Rhodia Operations | 1645 |
3 |
BASF SE | 19740 |
2 |
The Regents of the University of California | 18943 |
2 |
Other owners | 118 |