- 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: 7705
10-year publication summary
817
|
842
|
923
|
789
|
767
|
787
|
533
|
462
|
419
|
122
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
1047 |
Tokyo Electron Limited | 11599 |
518 |
International Business Machines Corporation | 60644 |
390 |
Applied Materials, Inc. | 16587 |
368 |
Screen Holdings Co., Ltd. | 2431 |
249 |
Lam Research Corporation | 4775 |
208 |
Samsung Electronics Co., Ltd. | 131630 |
193 |
GLOBALFOUNDRIES U.S. Inc. | 6459 |
125 |
Intel Corporation | 45621 |
114 |
United Microelectronics Corp. | 3921 |
100 |
Semiconductor Manufacturing International (Shanghai) Corporation | 1764 |
90 |
Micron Technology, Inc. | 24960 |
86 |
Kioxia Corporation | 9847 |
73 |
Fujimi Incorporated | 676 |
60 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
57 |
Infineon Technologies AG | 8189 |
56 |
Ebara Corporation | 1951 |
55 |
FUJIFILM Corporation | 27102 |
51 |
Semiconductor Manufacturing International (Beijing) Corporation | 1019 |
51 |
Shin-Etsu Handotai Co., Ltd. | 1277 |
50 |
Other owners | 3764 |