- 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 22/05 - 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 using aqueous solutions
Patent holdings for IPC class C23C 22/05
Total number of patents in this class: 264
10-year publication summary
15
|
26
|
22
|
27
|
30
|
28
|
10
|
13
|
9
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ArcelorMittal | 1887 |
15 |
Nihon Parkerizing Co., Ltd. | 274 |
9 |
Nippon Steel Corporation | 5649 |
9 |
POSCO | 2222 |
7 |
JFE Steel Corporation | 6067 |
6 |
Shikoku Chemicals Corporation | 78 |
6 |
Henkel AG & Co. KGaA | 10129 |
5 |
Nisshin Steel Co., Ltd. | 401 |
5 |
Shenzhen Hengzhaozhi Technology Co., Ltd. | 64 |
5 |
The Boeing Company | 19843 |
4 |
Alantum Europe GmbH | 30 |
4 |
Chemetall GmbH | 382 |
4 |
MacDermid Enthone Inc. | 237 |
4 |
Nanovis, LLC | 31 |
4 |
The Regents of the University of California | 18943 |
3 |
Hewlett-Packard Development Company, L.P. | 28538 |
3 |
Lam Research Corporation | 4775 |
3 |
PPG Industries Ohio, Inc. | 3430 |
3 |
Advanced Technologies, Inc. | 9 |
3 |
Arizona Board of Regents on behalf of Arizona State University | 2226 |
3 |
Other owners | 159 |