- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 99/00 - Subject matter not provided for in other groups of this subclass
Patent holdings for IPC class H03F 99/00
Total number of patents in this class: 177
10-year publication summary
|
24
|
16
|
3
|
3
|
3
|
3
|
3
|
4
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cirrus Logic, Inc. | 1771 |
17 |
| Bose Corporation | 2971 |
9 |
| Qualcomm Incorporated | 84760 |
7 |
| Texas Instruments Incorporated | 19481 |
6 |
| Rohm Co., Ltd. | 6414 |
6 |
| Cirrus Logic International Semiconductor Ltd. | 864 |
5 |
| Crestron Electronics Inc. | 700 |
5 |
| Hewlett-Packard Development Company, L.P. | 25933 |
4 |
| Yamaha Corporation | 4094 |
4 |
| Toshiba Corporation | 12317 |
3 |
| HTC Corporation | 2293 |
3 |
| Fortemedia, Inc. | 142 |
3 |
| Harman International Industries, Incorporated | 2618 |
3 |
| Logitech Europe S.A. | 1308 |
3 |
| Apple Inc. | 54577 |
2 |
| Robert Bosch GmbH | 42596 |
2 |
| Infineon Technologies AG | 8210 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 31084 |
2 |
| Mediatek Inc. | 5069 |
2 |
| Semiconductor Components Industries, L.L.C. | 5252 |
2 |
| Other owners | 87 |