- 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: 649
10-year publication summary
|
61
|
67
|
56
|
36
|
30
|
27
|
19
|
8
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
37 |
| Malikie Innovations Limited | 7703 |
36 |
| Qualcomm Incorporated | 76576 |
19 |
| Huawei Technologies Co., Ltd. | 100781 |
19 |
| T-Mobile Innovations LLC | 3213 |
16 |
| Ericsson | 20417 |
15 |
| Apple Inc. | 50209 |
13 |
| Cellco Partnership d/b/a Verizon Wireless | 669 |
9 |
| Microsoft Technology Licensing, LLC | 51439 |
9 |
| Nokia Technologies Oy | 15057 |
9 |
| Cisco Technology, Inc. | 18858 |
8 |
| Google LLC | 38759 |
8 |
| T-Mobile USA, Inc. | 3668 |
8 |
| AT&T Intellectual Property I, L.P. | 9886 |
7 |
| NEC Corporation | 32703 |
7 |
| Alcatel Lucent SA | 1723 |
7 |
| Verizon Patent And Licensing Inc. | 6900 |
7 |
| International Business Machines Corporation | 60644 |
6 |
| Motorola, Inc. | 2873 |
6 |
| Global Tel*Link Corporation | 431 |
6 |
| Other owners | 397 |