- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/66 - Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
Patent holdings for IPC class H04M 1/66
Total number of patents in this class: 1978
10-year publication summary
|
195
|
149
|
122
|
87
|
65
|
54
|
36
|
32
|
13
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 147622 |
87 |
| Apple Inc. | 55446 |
66 |
| Qualcomm Incorporated | 86553 |
64 |
| Malikie Innovations Limited | 7069 |
64 |
| Huawei Technologies Co., Ltd. | 113853 |
51 |
| Ericsson | 21902 |
44 |
| AT&T Intellectual Property I, L.P. | 9588 |
42 |
| T-Mobile Innovations LLC | 3683 |
36 |
| LG Electronics Inc. | 73578 |
31 |
| Nokia Technologies Oy | 18266 |
31 |
| T-Mobile USA, Inc. | 4168 |
29 |
| Google LLC | 42564 |
27 |
| NEC Corporation | 36003 |
26 |
| Microsoft Technology Licensing, LLC | 53910 |
26 |
| ZTE Corporation | 42721 |
25 |
| Cisco Technology, Inc. | 21998 |
22 |
| International Business Machines Corporation | 61471 |
21 |
| Alcatel Lucent SA | 1584 |
21 |
| Intel Corporation | 47129 |
20 |
| Verizon Patent And Licensing Inc. | 7140 |
18 |
| Other owners | 1227 |