- 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 22/24 - 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 using aqueous acidic solutions with pH < 6 containing hexavalent chromium compounds
Patent holdings for IPC class C23C 22/24
Total number of patents in this class: 65
10-year publication summary
7
|
6
|
5
|
7
|
5
|
4
|
2
|
1
|
3
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JX Nippon Mining & Metals Corporation | 1576 |
5 |
Nippon Steel Corporation | 5649 |
5 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
4 |
Nisshin Steel Co., Ltd. | 401 |
4 |
Abel Co., Ltd. | 8 |
4 |
Shenzhen Candortech Incorporated Company | 6 |
4 |
Henkel AG & Co. KGaA | 10129 |
3 |
POSCO | 2222 |
3 |
JFE Steel Corporation | 6067 |
2 |
Mitsui Mining & Smelting Co., Ltd. | 1373 |
2 |
Shenzhen Hongchangfa Technology Co., Ltd. | 20 |
2 |
SK Nexilis Co., Ltd. | 42 |
2 |
Samsung Electronics Co., Ltd. | 131630 |
1 |
The Boeing Company | 19843 |
1 |
Pratt & Whitney Canada Corp. | 4215 |
1 |
Sumitomo Electric Industries, Ltd. | 14131 |
1 |
Sumitomo Wiring Systems, Ltd. | 9367 |
1 |
The Furukawa Electric Co., Ltd. | 3486 |
1 |
Allfast Fastening Systems, Inc. | 8 |
1 |
Atotech Deutschland GmbH | 586 |
1 |
Other owners | 17 |