- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Patent holdings for IPC class H04M 9/08
Total number of patents in this class: 1154
10-year publication summary
|
83
|
75
|
77
|
86
|
74
|
60
|
37
|
48
|
40
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 54319 |
60 |
| Dolby Laboratories Licensing Corporation | 4202 |
49 |
| Samsung Electronics Co., Ltd. | 149087 |
27 |
| Google LLC | 43094 |
27 |
| Imagination Technologies Limited | 1723 |
26 |
| Cisco Technology, Inc. | 22112 |
24 |
| Bose Corporation | 3029 |
24 |
| Qualcomm Incorporated | 87585 |
23 |
| Amazon Technologies, Inc. | 27237 |
22 |
| Hewlett-Packard Development Company, L.P. | 25585 |
21 |
| Shure Acquisition Holdings, Inc. | 535 |
19 |
| Huawei Technologies Co., Ltd. | 115827 |
18 |
| Tencent Technology (Shenzhen) Company Limited | 15172 |
17 |
| Apple Inc. | 56283 |
16 |
| Yamaha Corporation | 4062 |
14 |
| Cerence Operating Company | 425 |
14 |
| ClearOne Inc. | 108 |
13 |
| Ankura Trust Company, LLC | 329 |
13 |
| Sonos, Inc. | 2703 |
11 |
| Avago Technologies International Sales Pte. Limited | 8663 |
11 |
| Other owners | 705 |