- 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: 319
10-year publication summary
|
25
|
37
|
32
|
31
|
25
|
14
|
10
|
24
|
15
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 112134 |
14 |
| Avaya Inc. | 1395 |
14 |
| Google LLC | 42096 |
13 |
| Microsoft Technology Licensing, LLC | 53667 |
12 |
| Micro Macro Assets LLC | 17 |
12 |
| ZTE Corporation | 42269 |
11 |
| Apple Inc. | 54714 |
8 |
| 8x8, Inc. | 439 |
8 |
| Capital One Services, LLC. | 9112 |
8 |
| State Farm Mutual Automobile Insurance Company | 3106 |
7 |
| Samsung Electronics Co., Ltd. | 145630 |
6 |
| Verizon Patent And Licensing Inc. | 7077 |
6 |
| Vonage Business Inc. | 172 |
6 |
| Malikie Innovations Limited | 7150 |
6 |
| International Business Machines Corporation | 61198 |
5 |
| NEC Corporation | 35567 |
5 |
| RingCentral, Inc. | 763 |
5 |
| IPC Systems, Inc. | 77 |
5 |
| NEC Platforms, Ltd. | 1153 |
5 |
| Research In Motion Limited | 1969 |
4 |
| Other owners | 159 |