- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 3/00 - Circuits for transducers
Patent holdings for IPC class H04R 3/00
Total number of patents in this class: 11369
10-year publication summary
|
832
|
960
|
1098
|
1163
|
1173
|
1163
|
1121
|
945
|
767
|
55
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 139001 |
375 |
| Cirrus Logic, Inc. | 1748 |
289 |
| Yamaha Corporation | 4075 |
285 |
| Sony Corporation | 31541 |
281 |
| Bose Corporation | 2921 |
253 |
| Apple Inc. | 52750 |
234 |
| Nokia Technologies Oy | 16542 |
230 |
| Sonos, Inc. | 2462 |
185 |
| Qualcomm Incorporated | 81865 |
181 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
152 |
| Amazon Technologies, Inc. | 25909 |
146 |
| Microsoft Technology Licensing, LLC | 52886 |
137 |
| Sony Group Corporation | 12664 |
137 |
| Dolby Laboratories Licensing Corporation | 4057 |
131 |
| Huawei Technologies Co., Ltd. | 106762 |
121 |
| Nippon Telegraph and Telephone Corporation | 16332 |
121 |
| Google LLC | 40853 |
118 |
| Harman International Industries, Incorporated | 2539 |
115 |
| Knowles Electronics, LLC | 605 |
104 |
| Shure Acquisition Holdings, Inc. | 498 |
94 |
| Other owners | 7680 |