- 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: 1754
10-year publication summary
|
164
|
142
|
107
|
124
|
159
|
164
|
106
|
75
|
76
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 22355 |
122 |
| Skyworks Solutions, Inc. | 3450 |
89 |
| Qualcomm Incorporated | 76576 |
85 |
| Qorvo US, Inc. | 2018 |
79 |
| Mitsubishi Electric Corporation | 43934 |
75 |
| Ericsson | 20417 |
48 |
| NXP USA, Inc. | 4155 |
45 |
| NEC Corporation | 32703 |
41 |
| Samsung Electronics Co., Ltd. | 131630 |
26 |
| Texas Instruments Incorporated | 19376 |
26 |
| Apple Inc. | 50209 |
21 |
| Huawei Technologies Co., Ltd. | 100781 |
20 |
| MACOM Technology Solutions Holdings, Inc. | 784 |
20 |
| Morgan Stanley Senior Funding, Inc., AS Agent | 1727 |
20 |
| Panasonic Corporation | 20786 |
19 |
| Intel Corporation | 45621 |
19 |
| Analog Devices, Inc. | 3475 |
16 |
| Toshiba Corporation | 12017 |
15 |
| BioSig Technologies, Inc. | 49 |
15 |
| Sumitomo Electric Industries, Ltd. | 14131 |
14 |
| Other owners | 939 |