- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 13/02 - Etching, surface-brightening or pickling compositions containing an alkali metal hydroxide
Patent holdings for IPC class C09K 13/02
Total number of patents in this class: 119
10-year publication summary
|
7
|
5
|
7
|
16
|
5
|
7
|
7
|
7
|
5
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DONGWOO FINE-CHEM Co., Ltd. | 1429 |
10 |
| Versum Materials US, LLC | 677 |
9 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48248 |
6 |
| FUJIFILM Electronic Materials U.S.A., Inc. | 343 |
5 |
| Corning Incorporated | 10500 |
3 |
| Mitsubishi Paper Mills Limited | 225 |
3 |
| SCHOTT Solar AG | 47 |
3 |
| Samsung Electronics Co., Ltd. | 157557 |
2 |
| Merck Patent GmbH | 5725 |
2 |
| FUJIFILM Corporation | 30512 |
2 |
| Texas Instruments Incorporated | 19663 |
2 |
| Tokyo Electron Limited | 13796 |
2 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11127 |
2 |
| Mitsubishi Chemical Corporation | 4721 |
2 |
| ASM IP Holding B.V. | 2387 |
2 |
| Atotech Deutschland GmbH | 524 |
2 |
| Entegris, Inc. | 2008 |
2 |
| GP Solar GmbH | 11 |
2 |
| National University of Singapore | 2582 |
2 |
| Other owners | 54 |