- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/58 - Arrangements for transferring received calls from one subscriber to anotherArrangements affording interim conversations between either the calling or the called party and a third party
Patent holdings for IPC class H04M 3/58
Total number of patents in this class: 321
10-year publication summary
|
25
|
36
|
32
|
30
|
24
|
14
|
9
|
23
|
15
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 113340 |
14 |
| Avaya Inc. | 1386 |
14 |
| Google LLC | 42451 |
13 |
| Microsoft Technology Licensing, LLC | 53829 |
12 |
| Micro Macro Assets LLC | 17 |
12 |
| ZTE Corporation | 42628 |
11 |
| 8x8, Inc. | 444 |
9 |
| Apple Inc. | 55287 |
8 |
| Capital One Services, LLC. | 9227 |
8 |
| State Farm Mutual Automobile Insurance Company | 3131 |
7 |
| Samsung Electronics Co., Ltd. | 147131 |
6 |
| Verizon Patent And Licensing Inc. | 7120 |
6 |
| Vonage Business Inc. | 172 |
6 |
| Malikie Innovations Limited | 7099 |
6 |
| Research In Motion Limited | 2015 |
5 |
| International Business Machines Corporation | 61353 |
5 |
| NEC Corporation | 35827 |
5 |
| RingCentral, Inc. | 766 |
5 |
| IPC Systems, Inc. | 80 |
5 |
| AT&T Intellectual Property I, L.P. | 9550 |
4 |
| Other owners | 160 |