- 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: 1153
10-year publication summary
|
75
|
77
|
86
|
74
|
60
|
37
|
48
|
40
|
32
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 54215 |
59 |
| Dolby Laboratories Licensing Corporation | 4262 |
51 |
| Samsung Electronics Co., Ltd. | 153573 |
27 |
| Google LLC | 43739 |
27 |
| Cisco Technology, Inc. | 22256 |
26 |
| Imagination Technologies Limited | 1776 |
26 |
| Amazon Technologies, Inc. | 27683 |
24 |
| Bose Corporation | 3077 |
24 |
| Qualcomm Incorporated | 90109 |
23 |
| Hewlett-Packard Development Company, L.P. | 25370 |
20 |
| Shure Acquisition Holdings, Inc. | 556 |
19 |
| Apple Inc. | 58049 |
18 |
| Huawei Technologies Co., Ltd. | 119891 |
17 |
| Tencent Technology (Shenzhen) Company Limited | 15627 |
17 |
| Biamp Systems, LLC | 374 |
16 |
| Yamaha Corporation | 4067 |
14 |
| Cerence Operating Company | 426 |
14 |
| Ankura Trust Company, LLC | 320 |
13 |
| Sonos, Inc. | 2787 |
12 |
| Avago Technologies International Sales Pte. Limited | 8600 |
11 |
| Other owners | 695 |