- 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 1/34 - Alkaline compositions for etching copper or alloys thereof
Patent holdings for IPC class C23F 1/34
Total number of patents in this class: 47
10-year publication summary
5
|
8
|
3
|
2
|
2
|
1
|
6
|
6
|
6
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Samsung Electronics Co., Ltd. | 131630 |
2 |
E. I. du Pont de Nemours and Company | 4345 |
2 |
Tokyo Electron Limited | 11599 |
2 |
Novellus Systems, Inc. | 559 |
2 |
Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
2 |
Atotech Deutschland GmbH | 586 |
2 |
EKC Technology, Inc. | 30 |
2 |
MEC Company Ltd. | 76 |
2 |
Namics Corporation | 393 |
2 |
Sachem, Inc. | 74 |
2 |
POSTECH Research and Business Development Foundation | 518 |
2 |
3m Innovative Properties Company | 18406 |
1 |
Samsung Display Co., Ltd. | 30585 |
1 |
International Business Machines Corporation | 60644 |
1 |
The Boeing Company | 19843 |
1 |
FUJIFILM Corporation | 27102 |
1 |
Texas Instruments Incorporated | 19376 |
1 |
Konica Minolta, Inc. | 8349 |
1 |
The Board of Trustees of the Leland Stanford Junior University | 6054 |
1 |
Idemitsu Kosan Co., Ltd. | 3995 |
1 |
Other owners | 16 |