- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/217 - Class D power amplifiersSwitching amplifiers
Patent holdings for IPC class H03F 3/217
Total number of patents in this class: 2207
10-year publication summary
|
188
|
189
|
191
|
160
|
136
|
128
|
121
|
91
|
81
|
73
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cirrus Logic, Inc. | 1803 |
161 |
| Cirrus Logic International Semiconductor Ltd. | 924 |
104 |
| Texas Instruments Incorporated | 19640 |
93 |
| Qualcomm Incorporated | 92859 |
72 |
| NEC Corporation | 37168 |
53 |
| Skyworks Solutions, Inc. | 3965 |
48 |
| Yamaha Corporation | 4083 |
35 |
| STMicroelectronics S.r.l. | 3368 |
34 |
| Samsung Electronics Co., Ltd. | 158442 |
29 |
| Rohm Co., Ltd. | 6877 |
29 |
| Bose Corporation | 3093 |
29 |
| Murata Manufacturing Co., Ltd. | 25809 |
25 |
| NPX B.V. | 2830 |
21 |
| Realtek Semiconductor Corp. | 3513 |
19 |
| Avago Technologies International Sales Pte. Limited | 8534 |
19 |
| Toshiba Corporation | 12594 |
18 |
| Mediatek Inc. | 5379 |
18 |
| Psemi Corporation | 1086 |
18 |
| Apple Inc. | 59027 |
17 |
| Elite Semiconductor Microelectronics Technology Inc. | 147 |
17 |
| Other owners | 1348 |