- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/68 - Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
Patent holdings for IPC class H03F 3/68
Total number of patents in this class: 1761
10-year publication summary
|
142
|
107
|
124
|
160
|
164
|
106
|
81
|
78
|
59
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 23928 |
153 |
| Qualcomm Incorporated | 82781 |
88 |
| Skyworks Solutions, Inc. | 3625 |
88 |
| Mitsubishi Electric Corporation | 45128 |
84 |
| Qorvo US, Inc. | 2151 |
81 |
| Ericsson | 21298 |
47 |
| NXP USA, Inc. | 4223 |
45 |
| NEC Corporation | 34721 |
41 |
| Samsung Electronics Co., Ltd. | 140622 |
26 |
| Texas Instruments Incorporated | 19457 |
26 |
| Apple Inc. | 53280 |
21 |
| MACOM Technology Solutions Holdings, Inc. | 813 |
21 |
| Panasonic Corporation | 20286 |
19 |
| Intel Corporation | 46267 |
19 |
| Huawei Technologies Co., Ltd. | 108034 |
19 |
| Morgan Stanley Senior Funding, Inc., AS Agent | 1626 |
19 |
| Nippon Telegraph and Telephone Corporation | 16586 |
18 |
| Analog Devices, Inc. | 3414 |
16 |
| Toshiba Corporation | 12136 |
15 |
| Sumitomo Electric Industries, Ltd. | 15094 |
15 |
| Other owners | 900 |