- 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 1/40 - Alkaline compositions for etching other metallic material
Patent holdings for IPC class C23F 1/40
Total number of patents in this class: 86
10-year publication summary
|
5
|
7
|
5
|
6
|
7
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9
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4
|
3
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6
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokuyama Corporation | 1483 |
9 |
| FUJIFILM Corporation | 30594 |
7 |
| Tata Steel Ijmuiden B.V. | 328 |
5 |
| Atotech Deutschland GmbH | 522 |
4 |
| Shenzhen Candortech Incorporated Company | 6 |
4 |
| Hyundai Motor Company | 24808 |
3 |
| Samsung Electronics Co., Ltd. | 158442 |
2 |
| E. I. du Pont de Nemours and Company | 3486 |
2 |
| Shin-Etsu Chemical Co., Ltd. | 6120 |
2 |
| Kia Motors Corporation | 7718 |
2 |
| DONGWOO FINE-CHEM Co., Ltd. | 1438 |
2 |
| EKC Technology, Inc. | 84 |
2 |
| Entegris, Inc. | 2011 |
2 |
| Toppan Printing Co., Ltd. | 2082 |
2 |
| Versum Materials US, LLC | 680 |
2 |
| Tech Met, Inc. | 18 |
2 |
| Chasm Advanced Materials, Inc. | 33 |
2 |
| Kioxia Corporation | 10856 |
2 |
| Apple Inc. | 59027 |
1 |
| The Boeing Company | 20186 |
1 |
| Other owners | 28 |