- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/58 - Anti-side-tone circuits
Patent holdings for IPC class H04M 1/58
Total number of patents in this class: 37
10-year publication summary
|
3
|
2
|
5
|
5
|
2
|
2
|
2
|
1
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bose Corporation | 2958 |
10 |
| Honor Device Co., Ltd. | 4892 |
3 |
| Canon Inc. | 39160 |
2 |
| Cirrus Logic, Inc. | 1763 |
2 |
| EADS Construcciones Aeronauticas, S.A. | 54 |
2 |
| NEC Platforms, Ltd. | 1145 |
2 |
| Tencent Technology (Shenzhen) Company Limited | 14451 |
2 |
| Qualcomm Mems Technologies, Inc. | 628 |
1 |
| Panasonic Corporation | 20198 |
1 |
| Huawei Technologies Co., Ltd. | 110033 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 30711 |
1 |
| Nippon Telegraph and Telephone Corporation | 16996 |
1 |
| RingCentral, Inc. | 747 |
1 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1907 |
1 |
| Airoha Technology Corp. | 178 |
1 |
| MaxLinear, Inc. | 793 |
1 |
| RSUPPORT Co., Ltd. | 29 |
1 |
| Tecteon plc | 2 |
1 |
| Vivo Mobile Communication Co., Ltd. | 11814 |
1 |
| GN Audio A/S | 404 |
1 |
| Other owners | 1 |