- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
Patent holdings for IPC class H01L 21/306
Total number of patents in this class: 8074
10-year publication summary
|
842
|
923
|
789
|
767
|
792
|
554
|
489
|
449
|
423
|
270
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiwan Semiconductor Manufacturing Company, Ltd. | 43400 |
1168 |
| Tokyo Electron Limited | 12899 |
542 |
| International Business Machines Corporation | 61471 |
378 |
| Applied Materials, Inc. | 18892 |
372 |
| Screen Holdings Co., Ltd. | 2887 |
307 |
| Samsung Electronics Co., Ltd. | 147622 |
210 |
| Lam Research Corporation | 5310 |
192 |
| GLOBALFOUNDRIES U.S. Inc. | 6415 |
125 |
| Intel Corporation | 47129 |
120 |
| United Microelectronics Corp. | 4249 |
106 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1758 |
90 |
| Micron Technology, Inc. | 26210 |
86 |
| Kioxia Corporation | 10441 |
79 |
| Fujimi Incorporated | 743 |
68 |
| FUJIFILM Corporation | 29586 |
59 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10946 |
59 |
| Ebara Corporation | 2188 |
58 |
| Infineon Technologies AG | 8255 |
54 |
| Semiconductor Manufacturing International (Beijing) Corporation | 1033 |
51 |
| Texas Instruments Incorporated | 19445 |
49 |
| Other owners | 3901 |