- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/16 - Automatic or semi-automatic exchanges with lock-out or secrecy provision in party-line systems
Patent holdings for IPC class H04M 3/16
Total number of patents in this class: 567
10-year publication summary
|
56
|
36
|
30
|
27
|
21
|
9
|
6
|
3
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 159473 |
35 |
| Malikie Innovations Limited | 6343 |
24 |
| Qualcomm Incorporated | 93847 |
21 |
| T-Mobile Innovations LLC | 4177 |
17 |
| Ericsson | 23154 |
15 |
| Apple Inc. | 59414 |
13 |
| Huawei Technologies Co., Ltd. | 125335 |
13 |
| Cellco Partnership d/b/a Verizon Wireless | 616 |
9 |
| Microsoft Technology Licensing, LLC | 54693 |
9 |
| T-Mobile USA, Inc. | 4559 |
9 |
| AT&T Intellectual Property I, L.P. | 10069 |
8 |
| Cisco Technology, Inc. | 22656 |
8 |
| Verizon Patent And Licensing Inc. | 7693 |
8 |
| NEC Corporation | 37532 |
7 |
| Alcatel Lucent SA | 1527 |
7 |
| Google LLC | 44900 |
7 |
| Kimips LLC | 30 |
7 |
| International Business Machines Corporation | 62864 |
6 |
| Palo Alto Networks, Inc. | 1665 |
6 |
| LG Electronics Inc. | 76299 |
5 |
| Other owners | 333 |