- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 15/28 - Arrangements for metering, time-control or time-indication with meter at substation
Patent holdings for IPC class H04M 15/28
Total number of patents in this class: 80
10-year publication summary
|
14
|
16
|
6
|
7
|
7
|
7
|
3
|
3
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TracFone Wireless, Inc. | 288 |
14 |
| BlackBerry Limited | 5958 |
4 |
| Qualcomm Incorporated | 76576 |
4 |
| AT&T Intellectual Property I, L.P. | 9886 |
3 |
| Intel Corporation | 45621 |
3 |
| Sony Corporation | 32931 |
2 |
| Sony Ericsson Mobile Communications AB | 2014 |
2 |
| Cisco Technology, Inc. | 18858 |
2 |
| Huawei Technologies Co., Ltd. | 100781 |
2 |
| Microsoft Technology Licensing, LLC | 51439 |
2 |
| Nokia Solutions And Networks Oy | 5698 |
2 |
| eAgency, Inc. | 12 |
2 |
| The Nielsen Company (US), LLC | 2549 |
2 |
| Ivanti, Inc. | 368 |
2 |
| Alcatel Lucent | 4720 |
2 |
| Copernicus, LLC | 2 |
2 |
| Siemens AG | 24990 |
1 |
| AT&T Corporation | 206 |
1 |
| NEC Corporation | 32703 |
1 |
| Alcatel Lucent SA | 1723 |
1 |
| Other owners | 26 |