- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 11/02 - Loudspeakers
Patent holdings for IPC class H04R 11/02
Total number of patents in this class: 458
10-year publication summary
|
31
|
37
|
55
|
49
|
55
|
37
|
32
|
28
|
17
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Knowles Electronics, LLC | 597 |
41 |
| Sony Corporation | 32931 |
24 |
| Bose Corporation | 2880 |
23 |
| Apple Inc. | 50209 |
22 |
| Sonion Nederland B.V. | 138 |
21 |
| Google LLC | 38759 |
16 |
| LG Display Co., Ltd. | 11907 |
14 |
| Harman International Industries, Incorporated | 2443 |
13 |
| PS Audio Design Oy | 22 |
13 |
| Huawei Technologies Co., Ltd. | 100781 |
11 |
| Alps Electric Co., Ltd. | 851 |
10 |
| AAC Technologies Pte. Ltd. | 1436 |
10 |
| Cochlear Limited | 1619 |
8 |
| Rion Co., Ltd. | 94 |
8 |
| Alps Alpine Co., Ltd. | 1831 |
8 |
| Panasonic Corporation | 20786 |
7 |
| Earlens Corporation | 149 |
7 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
5 |
| Tsinghua University | 5426 |
5 |
| Alpine Electronics, Inc. | 543 |
5 |
| Other owners | 187 |