- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 7/04 - Arrangements for interconnection between switching centres for compensating differences of line impedance
Patent holdings for IPC class H04M 7/04
Total number of patents in this class: 14
10-year publication summary
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Adtran, Inc. | 443 |
2 |
| Panasonic Corporation | 20786 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
1 |
| National Semiconductor Corporation | 1411 |
1 |
| Newport Media, Inc. | 35 |
1 |
| Hewlett Packard Enterprise Development LP | 10702 |
1 |
| Actelis Networks Inc. | 9 |
1 |
| Dali Systems Co. Ltd. | 115 |
1 |
| MaxLinear, Inc. | 708 |
1 |
| Mitel Networks Corporation | 455 |
1 |
| SBC Technology Resources, Inc. | 1 |
1 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
1 |
| META Platforms, Inc. | 7514 |
1 |
| Other owners | 0 |