- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 7/00 - Arrangements for interconnection between switching centres
Patent holdings for IPC class H04M 7/00
Total number of patents in this class: 3658
10-year publication summary
|
425
|
421
|
404
|
386
|
313
|
306
|
211
|
172
|
131
|
40
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 8x8, Inc. | 398 |
131 |
| Microsoft Technology Licensing, LLC | 51439 |
98 |
| AT&T Intellectual Property I, L.P. | 9886 |
92 |
| Verizon Patent And Licensing Inc. | 6900 |
80 |
| Twilio, Inc. | 456 |
77 |
| Cisco Technology, Inc. | 18858 |
71 |
| Huawei Technologies Co., Ltd. | 100781 |
71 |
| RingCentral, Inc. | 731 |
70 |
| T-Mobile USA, Inc. | 3668 |
59 |
| Ericsson | 20417 |
57 |
| Level 3 Communications, LLC | 1428 |
47 |
| Genesys Telecommunications Laboratories, Inc. | 749 |
46 |
| Tango Networks, Inc. | 134 |
44 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
44 |
| Metaswitch Networks Ltd | 241 |
42 |
| Samsung Electronics Co., Ltd. | 131630 |
41 |
| CenturyLink Intellectual Property LLC | 1130 |
41 |
| International Business Machines Corporation | 60644 |
38 |
| Avaya Inc. | 1529 |
35 |
| Vonage Business Inc. | 171 |
34 |
| Other owners | 2440 |