- All sections
- C - Chemistrymetallurgy
- C23F - Non-mechanical removal of metallic material from surfacesinhibiting corrosion of metallic materialinhibiting incrustation in generalmulti-step processes for surface treatment of metallic material involving at least one process provided for in class and at least one process covered by subclass or or class
- C23F 1/46 - Regeneration of etching compositions
Patent holdings for IPC class C23F 1/46
Total number of patents in this class: 91
10-year publication summary
|
6
|
10
|
7
|
4
|
5
|
6
|
6
|
8
|
8
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Atotech Deutschland GmbH | 566 |
5 |
| Chengdu Honghua Environmental Science & Technology Co., Ltd | 10 |
5 |
| Sumitomo Electric Industries, Ltd. | 14990 |
3 |
| Tokyo Electron Limited | 12127 |
3 |
| MEC Company Ltd. | 79 |
3 |
| Sigma Engineering AB | 4 |
3 |
| Sumitomo Electric Printed Circuits, Inc. | 290 |
3 |
| Novellus Systems, Inc. | 508 |
2 |
| Andritz AG | 226 |
2 |
| Aperam | 114 |
2 |
| Semes Co., Ltd. | 1340 |
2 |
| Wuxi Suntech Power Co., Ltd. | 58 |
2 |
| Tessenderlo Group | 9 |
2 |
| Eve Recycling SARL | 2 |
2 |
| Kuttler Automation Systems (Suzhou) Co., Ltd. | 2 |
2 |
| Huizhou Zhending Environmental Protection Technology Co., Ltd. | 2 |
2 |
| Atotech Deutschland GmbH & Co. KG | 368 |
2 |
| 3m Innovative Properties Company | 17969 |
1 |
| BASF SE | 20421 |
1 |
| SNECMA S.A. | 1150 |
1 |
| Other owners | 43 |