- All sections
- H - Electricity
- H04S - Stereophonic systems
- H04S 3/02 - Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Patent holdings for IPC class H04S 3/02
Total number of patents in this class: 564
10-year publication summary
|
66
|
74
|
46
|
80
|
51
|
39
|
41
|
15
|
21
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4063 |
153 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4810 |
61 |
| Dolby International AB | 1047 |
61 |
| Nokia Technologies Oy | 16586 |
29 |
| Qualcomm Incorporated | 82009 |
21 |
| Dolby International AB | 559 |
20 |
| DTS, Inc. | 382 |
11 |
| Sonos, Inc. | 2466 |
11 |
| Samsung Electronics Co., Ltd. | 139302 |
9 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6134 |
9 |
| Koninklijke Philips N.V. | 24052 |
8 |
| Huawei Technologies Co., Ltd. | 106915 |
8 |
| Google LLC | 40924 |
7 |
| Electronics and Telecommunications Research Institute | 9037 |
6 |
| Thomson Licensing | 3785 |
6 |
| Bose Corporation | 2925 |
6 |
| Harman International Industries, Incorporated | 2539 |
6 |
| Gcoa Co., Ltd. | 27 |
6 |
| Koninklijke Philips Electronics N.V. | 10809 |
5 |
| Orange S.A. | 1495 |
5 |
| Other owners | 116 |