- 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: 1158
10-year publication summary
|
83
|
75
|
78
|
87
|
76
|
63
|
37
|
48
|
38
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 53739 |
60 |
| Dolby Laboratories Licensing Corporation | 4126 |
48 |
| Samsung Electronics Co., Ltd. | 146534 |
27 |
| Google LLC | 42292 |
27 |
| Imagination Technologies Limited | 1662 |
26 |
| Cisco Technology, Inc. | 19950 |
25 |
| Qualcomm Incorporated | 85550 |
23 |
| Bose Corporation | 2995 |
23 |
| Amazon Technologies, Inc. | 26741 |
22 |
| Hewlett-Packard Development Company, L.P. | 25869 |
21 |
| Huawei Technologies Co., Ltd. | 113006 |
19 |
| Shure Acquisition Holdings, Inc. | 526 |
18 |
| Tencent Technology (Shenzhen) Company Limited | 14799 |
17 |
| Apple Inc. | 55017 |
16 |
| ClearOne Inc. | 134 |
16 |
| Yamaha Corporation | 4082 |
15 |
| Cerence Operating Company | 436 |
14 |
| Ankura Trust Company, LLC | 335 |
13 |
| Avago Technologies International Sales Pte. Limited | 8752 |
11 |
| Cerence Inc. | 283 |
11 |
| Other owners | 706 |