- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 19/08 - Current supply arrangements for telephone systems with current supply sources at the substations
Patent holdings for IPC class H04M 19/08
Total number of patents in this class: 131
10-year publication summary
|
31
|
17
|
16
|
21
|
17
|
12
|
6
|
7
|
3
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| British Telecommunications Public Limited Company | 2575 |
13 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 18739 |
8 |
| Cisco Technology, Inc. | 18858 |
7 |
| Ericsson | 20417 |
6 |
| Huawei Technologies Co., Ltd. | 100781 |
6 |
| Microsemi P.O.E. Ltd. | 25 |
5 |
| Microsemi Corporation | 125 |
4 |
| AT&T Intellectual Property I, L.P. | 9886 |
3 |
| ZTE Corporation | 39218 |
3 |
| CommScope Connectivity Belgium BVBA | 497 |
3 |
| Global Tel*Link Corporation | 431 |
3 |
| Goplug Bags, Inc. | 7 |
3 |
| Canon Inc. | 36841 |
2 |
| Intel Corporation | 45621 |
2 |
| Thomson Licensing | 4027 |
2 |
| RPX Corporation | 1571 |
2 |
| Nokia Technologies Oy | 15057 |
2 |
| Adtran, Inc. | 443 |
2 |
| CommScope Connectivity UK Limited | 87 |
2 |
| CommScope Technologies LLC | 4937 |
2 |
| Other owners | 51 |