- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 7/12 - Non-planar diaphragms or cones
Patent holdings for IPC class H04R 7/12
Total number of patents in this class: 789
10-year publication summary
38
|
62
|
92
|
112
|
89
|
109
|
97
|
96
|
80
|
21
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
AAC Technologies Pte. Ltd. | 1436 |
71 |
Goertek Inc. | 2477 |
66 |
AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
49 |
AAC Microtech (Changzhou) Co., Ltd. | 458 |
32 |
Apple Inc. | 50209 |
28 |
Yamaha Corporation | 4054 |
27 |
Bose Corporation | 2880 |
22 |
Sony Corporation | 32931 |
20 |
Pioneer Corporation | 4843 |
16 |
Panasonic Automotive Systems Co., Ltd. | 1440 |
16 |
Tohoku Pioneer Corporation | 477 |
15 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
14 |
PSS Belgium N.V. | 96 |
13 |
B & W Group Ltd | 344 |
12 |
Knowles Electronics, LLC | 597 |
11 |
Sonos, Inc. | 2274 |
11 |
Panasonic Corporation | 20786 |
10 |
Harman International Industries, Incorporated | 2443 |
10 |
Sound Fun Corporation | 15 |
10 |
Matsushita Electric Industrial Co., Ltd. | 4724 |
9 |
Other owners | 327 |