- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/78 - Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
Patent holdings for IPC class H04M 1/78
Total number of patents in this class: 47
10-year publication summary
|
0
|
0
|
0
|
0
|
1
|
1
|
21
|
6
|
15
|
1
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 629 |
43 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Canon Inc. | 36841 |
1 |
| Nice Systems B.V. | 1 |
1 |
| Shenzhen Voxtech Co., Ltd. | 98 |
1 |
| Other owners | 0 |