- All sections
- H - Electricity
- H04S - Stereophonic systems
- H04S 5/02 - Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
Patent holdings for IPC class H04S 5/02
Total number of patents in this class: 476
10-year publication summary
|
45
|
56
|
39
|
38
|
27
|
12
|
11
|
9
|
9
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 32931 |
73 |
| Pioneer Corporation | 4843 |
51 |
| Yamaha Corporation | 4054 |
42 |
| Dolby Laboratories Licensing Corporation | 3883 |
38 |
| Panasonic Corporation | 20786 |
25 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
24 |
| Samsung Electronics Co., Ltd. | 131630 |
23 |
| Dolby International AB | 1076 |
15 |
| Sharp Kabushiki Kaisha | 18957 |
12 |
| JVC Kenwood Corporation | 2774 |
9 |
| Harman International Industries, Incorporated | 2443 |
9 |
| Clarion Co., Ltd. | 896 |
6 |
| Kronoton GmbH | 12 |
6 |
| Sony Group Corporation | 10730 |
6 |
| Socionext Inc. | 1575 |
5 |
| LG Electronics Inc. | 69257 |
4 |
| Harman Becker Automotive Systems GmbH | 645 |
4 |
| Dolby International AB | 422 |
4 |
| Qualcomm Incorporated | 76576 |
3 |
| Huawei Technologies Co., Ltd. | 100781 |
3 |
| Other owners | 114 |