- All sections
- C - Chemistry; metallurgy
- C23F - Non-mechanical removal of metallic material from surfaces; inhibiting corrosion of metallic material; inhibiting incrustation in general; multi-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 1/38 - Alkaline compositions for etching refractory metals
Patent holdings for IPC class C23F 1/38
Total number of patents in this class: 60
10-year publication summary
5
|
8
|
6
|
3
|
4
|
1
|
7
|
5
|
5
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Biomet 3i, LLC | 305 |
6 |
Entegris, Inc. | 1736 |
5 |
FUJIFILM Corporation | 27102 |
4 |
Selenium Medical | 109 |
4 |
E. I. du Pont de Nemours and Company | 4345 |
2 |
Mitsubishi Electric Corporation | 43934 |
2 |
Wako Pure Chemical Industries, Ltd. | 153 |
2 |
EKC Technology, Inc. | 30 |
2 |
Mitsubishi Gas Chemical Company, Inc. | 3188 |
2 |
Oerlikon Surface Solutions AG, Pfaffikon | 556 |
2 |
Sachem, Inc. | 74 |
2 |
Technic France | 10 |
2 |
Versum Materials US, LLC | 591 |
2 |
Samsung Display Co., Ltd. | 30585 |
1 |
Semiconductor Energy Laboratory Co., Ltd. | 10902 |
1 |
Showa Denko K.K. | 2539 |
1 |
Idemitsu Kosan Co., Ltd. | 3995 |
1 |
Advansix Resins & Chemicals LLC | 278 |
1 |
DONGWOO FINE-CHEM Co., Ltd. | 1163 |
1 |
Jcu Corporation | 87 |
1 |
Other owners | 16 |