- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/428 - Arrangements for placing incoming calls on hold
Patent holdings for IPC class H04M 3/428
Total number of patents in this class: 296
10-year publication summary
|
26
|
28
|
23
|
24
|
23
|
18
|
18
|
16
|
10
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Avaya Inc. | 1345 |
18 |
| Google LLC | 43436 |
18 |
| Apple Inc. | 57166 |
12 |
| T-Mobile USA, Inc. | 4328 |
10 |
| Verint Americas Inc. | 596 |
9 |
| Arlington Technologies, LLC | 619 |
9 |
| Samsung Electronics Co., Ltd. | 151485 |
8 |
| Global Tel*Link Corporation | 425 |
8 |
| Qualcomm Incorporated | 88827 |
7 |
| Huawei Technologies Co., Ltd. | 118145 |
7 |
| United Services Automobile Association (USAA) | 3118 |
7 |
| Malikie Innovations Limited | 6799 |
7 |
| First Orion Corp. | 178 |
6 |
| Microsoft Technology Licensing, LLC | 54168 |
5 |
| Verizon Patent And Licensing Inc. | 7409 |
4 |
| 8x8, Inc. | 460 |
4 |
| NEC Platforms, Ltd. | 1071 |
4 |
| Alvaria, Inc. | 291 |
4 |
| Ankura Trust Company, LLC | 324 |
4 |
| Sony Ericsson Mobile Communications AB | 1594 |
3 |
| Other owners | 142 |