- 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: 1750
10-year publication summary
|
143
|
107
|
124
|
160
|
164
|
106
|
84
|
79
|
59
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24465 |
157 |
| Qualcomm Incorporated | 84971 |
88 |
| Skyworks Solutions, Inc. | 3707 |
87 |
| Mitsubishi Electric Corporation | 45962 |
84 |
| Qorvo US, Inc. | 2205 |
80 |
| Ericsson | 21704 |
46 |
| NXP USA, Inc. | 4299 |
46 |
| NEC Corporation | 35521 |
41 |
| Texas Instruments Incorporated | 19480 |
25 |
| Samsung Electronics Co., Ltd. | 145416 |
24 |
| Apple Inc. | 54658 |
21 |
| MACOM Technology Solutions Holdings, Inc. | 821 |
21 |
| Panasonic Corporation | 20136 |
19 |
| Intel Corporation | 46949 |
19 |
| Huawei Technologies Co., Ltd. | 111975 |
19 |
| Morgan Stanley Senior Funding, Inc., AS Agent | 1592 |
19 |
| Nippon Telegraph and Telephone Corporation | 17275 |
18 |
| Sumitomo Electric Industries, Ltd. | 15428 |
16 |
| Analog Devices, Inc. | 3378 |
16 |
| Toshiba Corporation | 12320 |
15 |
| Other owners | 889 |