- 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
111
|
83
|
75
|
78
|
87
|
76
|
62
|
36
|
44
|
15
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Microsoft Technology Licensing, LLC | 51439 |
61 |
Dolby Laboratories Licensing Corporation | 3883 |
43 |
Imagination Technologies Limited | 1458 |
27 |
Samsung Electronics Co., Ltd. | 131630 |
24 |
Google LLC | 38759 |
24 |
Qualcomm Incorporated | 76576 |
23 |
Cisco Technology, Inc. | 18858 |
23 |
Bose Corporation | 2880 |
23 |
Mitel Networks Corporation | 455 |
23 |
Amazon Technologies, Inc. | 24422 |
22 |
Hewlett-Packard Development Company, L.P. | 28538 |
21 |
Apple Inc. | 50209 |
18 |
Huawei Technologies Co., Ltd. | 100781 |
18 |
Shure Acquisition Holdings, Inc. | 449 |
17 |
Tencent Technology (Shenzhen) Company Limited | 12951 |
17 |
ClearOne Inc. | 132 |
16 |
Yamaha Corporation | 4054 |
15 |
Cerence Operating Company | 447 |
14 |
Texas Instruments Incorporated | 19376 |
11 |
Avago Technologies International Sales Pte. Limited | 9260 |
11 |
Other owners | 703 |