- All sections
- H - Electricity
- H04S - Stereophonic systems
- H04S 1/00 - Two-channel systems
Patent holdings for IPC class H04S 1/00
Total number of patents in this class: 1710
10-year publication summary
|
135
|
148
|
172
|
158
|
139
|
150
|
141
|
113
|
90
|
61
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4320 |
93 |
| Huawei Technologies Co., Ltd. | 123282 |
74 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5249 |
64 |
| Sony Corporation | 30208 |
53 |
| Qualcomm Incorporated | 91997 |
47 |
| Samsung Electronics Co., Ltd. | 157557 |
45 |
| Apple Inc. | 58705 |
44 |
| Dolby International AB | 1027 |
44 |
| Sonos, Inc. | 2853 |
44 |
| Yamaha Corporation | 4071 |
41 |
| Nokia Technologies Oy | 21069 |
38 |
| JVC Kenwood Corporation | 3133 |
36 |
| Dolby International AB | 916 |
32 |
| Voyetra Turtle Beach, Inc. | 524 |
31 |
| Sony Group Corporation | 15597 |
25 |
| Eight Khz, LLC | 41 |
25 |
| Boomcloud 360 Inc. | 75 |
23 |
| Magic Leap, Inc. | 3391 |
20 |
| Koninklijke Philips N.V. | 25832 |
19 |
| Bose Corporation | 3093 |
19 |
| Other owners | 893 |