- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/46 - Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
Patent holdings for IPC class H04M 3/46
Total number of patents in this class: 187
10-year publication summary
|
17
|
28
|
23
|
19
|
13
|
17
|
4
|
6
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 50209 |
9 |
| Verizon Patent And Licensing Inc. | 6900 |
8 |
| Huawei Technologies Co., Ltd. | 100781 |
7 |
| RingCentral, Inc. | 731 |
7 |
| Movius Interactive Corporation | 48 |
7 |
| T-Mobile USA, Inc. | 3668 |
7 |
| Qualcomm Incorporated | 76576 |
6 |
| International Business Machines Corporation | 60644 |
6 |
| British Telecommunications Public Limited Company | 2575 |
4 |
| Cisco Technology, Inc. | 18858 |
4 |
| Hearsay Social, Inc. | 37 |
4 |
| Vonage Business Inc. | 171 |
4 |
| AT&T Intellectual Property I, L.P. | 9886 |
3 |
| Avaya Inc. | 1529 |
3 |
| Microsoft Technology Licensing, LLC | 51439 |
3 |
| BCE Inc. | 431 |
3 |
| Comcast Cable Communications, LLC | 4075 |
3 |
| Rockwilli RMR, LLC | 6 |
3 |
| Smartwatcher Technologies AG | 12 |
3 |
| France Telecom | 1618 |
3 |
| Other owners | 90 |