- 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: 617
10-year publication summary
|
101
|
76
|
67
|
50
|
54
|
45
|
31
|
29
|
24
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AT&T Intellectual Property I, L.P. | 9427 |
21 |
| Microsoft Technology Licensing, LLC | 53372 |
20 |
| Telefonaktiebolaget LM Ericsson (publ) | 27703 |
18 |
| Level 3 Communications, LLC | 1248 |
17 |
| Verizon Patent And Licensing Inc. | 7028 |
16 |
| Cyara Solutions Pty Ltd | 67 |
14 |
| Huawei Technologies Co., Ltd. | 109769 |
13 |
| 8x8, Inc. | 430 |
13 |
| Twilio, Inc. | 561 |
13 |
| Malikie Innovations Limited | 7238 |
13 |
| T-Mobile USA, Inc. | 4017 |
11 |
| Ericsson | 21438 |
10 |
| Aylus Networks, Inc. | 31 |
9 |
| Movius Interactive Corporation | 54 |
9 |
| Vonage Business Inc. | 169 |
9 |
| Ribbon Communications Operating Company, Inc. | 478 |
9 |
| Intel Corporation | 46639 |
7 |
| Pindrop Security, Inc. | 242 |
7 |
| Ultratec, Inc. | 83 |
7 |
| Zoom Video Communications, Inc. | 576 |
7 |
| Other owners | 374 |