- 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
|
6
|
3
|
2
|
5
|
5
|
2
|
2
|
1
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bose Corporation | 2880 |
10 |
| Canon Inc. | 36841 |
2 |
| Cirrus Logic, Inc. | 1719 |
2 |
| EADS Construcciones Aeronauticas, S.A. | 55 |
2 |
| NEC Platforms, Ltd. | 1106 |
2 |
| Tencent Technology (Shenzhen) Company Limited | 12951 |
2 |
| Honor Device Co., Ltd. | 3469 |
2 |
| Qualcomm Mems Technologies, Inc. | 628 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Huawei Technologies Co., Ltd. | 100781 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
1 |
| Nippon Telegraph and Telephone Corporation | 14195 |
1 |
| RingCentral, Inc. | 731 |
1 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
1 |
| Airoha Technology Corp. | 174 |
1 |
| MaxLinear, Inc. | 708 |
1 |
| Plantronics, Inc. | 305 |
1 |
| RSUPPORT Co., Ltd. | 30 |
1 |
| Tecteon plc | 2 |
1 |
| Tyco Safety Products Canada Ltd. | 109 |
1 |
| Other owners | 2 |