- 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: 194
10-year publication summary
|
19
|
24
|
16
|
3
|
3
|
3
|
3
|
3
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cirrus Logic, Inc. | 1719 |
18 |
| Sonos, Inc. | 2274 |
13 |
| Bose Corporation | 2880 |
9 |
| Qualcomm Incorporated | 76576 |
6 |
| Texas Instruments Incorporated | 19376 |
6 |
| Rohm Co., Ltd. | 5843 |
6 |
| Hewlett-Packard Development Company, L.P. | 28538 |
5 |
| Crestron Electronics Inc. | 649 |
5 |
| Yamaha Corporation | 4054 |
4 |
| Cirrus Logic International Semiconductor Ltd. | 792 |
4 |
| Toshiba Corporation | 12017 |
3 |
| Infineon Technologies Austria AG | 1954 |
3 |
| HTC Corporation | 2219 |
3 |
| Fortemedia, Inc. | 140 |
3 |
| Harman International Industries, Incorporated | 2443 |
3 |
| Logitech Europe S.A. | 1188 |
3 |
| Samsung Electronics Co., Ltd. | 131630 |
2 |
| Apple Inc. | 50209 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Infineon Technologies AG | 8189 |
2 |
| Other owners | 92 |