- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/187 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
Patent holdings for IPC class H03F 3/187
Total number of patents in this class: 360
10-year publication summary
|
27
|
28
|
48
|
64
|
52
|
36
|
22
|
20
|
19
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cirrus Logic, Inc. | 1719 |
68 |
| Cirrus Logic International Semiconductor Ltd. | 792 |
29 |
| Qualcomm Incorporated | 76576 |
20 |
| Infineon Technologies AG | 8189 |
11 |
| Skyworks Solutions, Inc. | 3450 |
11 |
| Texas Instruments Incorporated | 19376 |
9 |
| Rohm Co., Ltd. | 5843 |
9 |
| STMicroelectronics S.r.l. | 3693 |
8 |
| STMicroelectronics (Shenzhen) R&D Co. Ltd | 107 |
7 |
| Murata Manufacturing Co., Ltd. | 22355 |
6 |
| Semiconductor Components Industries, L.L.C. | 5345 |
6 |
| ams AG | 807 |
6 |
| Avnera Corporation | 116 |
6 |
| ST-Ericsson SA | 530 |
6 |
| Samsung Electronics Co., Ltd. | 131630 |
5 |
| InvenSense, Inc. | 1014 |
5 |
| Synaptics Incorporated | 1598 |
5 |
| Robert Bosch GmbH | 40953 |
4 |
| Yamaha Corporation | 4054 |
4 |
| Knowles Electronics, LLC | 597 |
4 |
| Other owners | 131 |