- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 7/12 - Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
Patent holdings for IPC class H04M 7/12
Total number of patents in this class: 610
10-year publication summary
|
100
|
101
|
76
|
67
|
50
|
54
|
44
|
30
|
26
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AT&T Intellectual Property I, L.P. | 9886 |
23 |
| Microsoft Technology Licensing, LLC | 51439 |
21 |
| Verizon Patent And Licensing Inc. | 6900 |
18 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
18 |
| Level 3 Communications, LLC | 1428 |
17 |
| Huawei Technologies Co., Ltd. | 100781 |
13 |
| Malikie Innovations Limited | 7703 |
13 |
| Ericsson | 20417 |
11 |
| 8x8, Inc. | 398 |
11 |
| Twilio, Inc. | 456 |
11 |
| Cyara Solutions Pty Ltd | 58 |
10 |
| Movius Interactive Corporation | 48 |
9 |
| T-Mobile USA, Inc. | 3668 |
9 |
| Vonage Business Inc. | 171 |
9 |
| Ribbon Communications Operating Company, Inc. | 437 |
9 |
| International Business Machines Corporation | 60644 |
8 |
| Aylus Networks, Inc. | 31 |
8 |
| Zoom Video Communications, Inc. | 819 |
8 |
| Intel Corporation | 45621 |
7 |
| GENBAND US LLC | 167 |
6 |
| Other owners | 371 |