- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/652 - Means for playing back the recorded messages by remote control over a telephone line
Patent holdings for IPC class H04M 1/652
Total number of patents in this class: 11
10-year publication summary
|
2
|
4
|
1
|
1
|
2
|
0
|
0
|
0
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| eBay Inc. | 3298 |
5 |
| Unify Patente GmbH & Co. KG | 301 |
2 |
| Panasonic Corporation | 20786 |
1 |
| Delphi Technologies, Inc. | 487 |
1 |
| Huawei Device Co., Ltd. | 2758 |
1 |
| Essence Security International (E.S.I) LTD. | 72 |
1 |
| Other owners | 0 |