- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/331 - Transistors
Patent holdings for IPC class H01L 21/331
Total number of patents in this class: 762
10-year publication summary
|
31
|
22
|
19
|
14
|
24
|
31
|
28
|
22
|
13
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Csmc Technologies Fab2 Co., Ltd. | 747 |
36 |
| GLOBALFOUNDRIES U.S. Inc. | 6384 |
32 |
| Murata Manufacturing Co., Ltd. | 25785 |
28 |
| Texas Instruments Incorporated | 19636 |
24 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48539 |
24 |
| Sumitomo Chemical Company, Limited | 8963 |
22 |
| Nippon Telegraph and Telephone Corporation | 15934 |
17 |
| Shenzhen Xinguodu Technology Co., Ltd. | 1923 |
14 |
| Samsung Electronics Co., Ltd. | 158337 |
13 |
| Micron Technology, Inc. | 27709 |
12 |
| Cree, Inc. | 919 |
11 |
| NXP USA, Inc. | 4403 |
11 |
| NXP B.V. | 1392 |
11 |
| Huawei Technologies Co., Ltd. | 123867 |
9 |
| National Semiconductor Corporation | 822 |
9 |
| Fuji Electric Co., Ltd. | 5503 |
9 |
| Morgan Stanley Senior Funding, Inc., AS Agent | 1425 |
9 |
| International Business Machines Corporation | 62742 |
8 |
| ABB Technology AG | 1224 |
8 |
| Hitachi Energy Ltd. | 2600 |
8 |
| Other owners | 447 |