- 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: 318
10-year publication summary
|
36
|
32
|
30
|
24
|
14
|
9
|
23
|
15
|
13
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 116370 |
14 |
| Avaya Inc. | 1364 |
14 |
| Google LLC | 43201 |
13 |
| Microsoft Technology Licensing, LLC | 54342 |
12 |
| Micro Macro Assets LLC | 17 |
12 |
| ZTE Corporation | 43127 |
11 |
| 8x8, Inc. | 449 |
9 |
| Apple Inc. | 56571 |
8 |
| Capital One Services, LLC. | 9504 |
8 |
| State Farm Mutual Automobile Insurance Company | 3202 |
7 |
| Samsung Electronics Co., Ltd. | 149582 |
6 |
| Verizon Patent And Licensing Inc. | 7380 |
6 |
| Vonage Business Inc. | 177 |
6 |
| Malikie Innovations Limited | 6896 |
6 |
| Research In Motion Limited | 1718 |
5 |
| International Business Machines Corporation | 61792 |
5 |
| NEC Corporation | 36322 |
5 |
| RingCentral, Inc. | 778 |
5 |
| CenturyLink Intellectual Property LLC | 1264 |
5 |
| IPC Systems, Inc. | 82 |
5 |
| Other owners | 156 |