- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 5/04 - Circuit arrangements
Patent holdings for IPC class H04R 5/04
Total number of patents in this class: 1928
10-year publication summary
|
60
|
106
|
133
|
162
|
196
|
238
|
239
|
360
|
428
|
56
|
| 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 107772 |
94 |
| Sonos, Inc. | 1452 |
92 |
| Apple Inc. | 38919 |
86 |
| Bose Corporation | 2646 |
82 |
| Dolby Laboratories Licensing Corporation | 3290 |
64 |
| Sony Corporation | 43704 |
61 |
| Nokia Technologies Oy | 11471 |
45 |
| Harman International Industries, Incorporated | 2148 |
43 |
| Qualcomm Incorporated | 59101 |
42 |
| Yamaha Corporation | 4035 |
39 |
| Cirrus Logic, Inc. | 1535 |
33 |
| Microsoft Technology Licensing, LLC | 48171 |
25 |
| Voyetra Turtle Beach, Inc. | 250 |
22 |
| Facebook Technologies, LLC | 2292 |
21 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 3887 |
20 |
| Boomcloud 360 Inc. | 45 |
19 |
| Creative Technology Ltd | 723 |
19 |
| DTS, Inc. | 367 |
19 |
| Koss Corporation | 132 |
19 |
| LG Electronics Inc. | 61477 |
18 |
| Other owners | 1065 |