- 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: 2146
10-year publication summary
|
226
|
195
|
149
|
124
|
89
|
68
|
53
|
30
|
22
|
1
|
| 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 |
90 |
| Malikie Innovations Limited | 7703 |
79 |
| Apple Inc. | 50209 |
66 |
| Qualcomm Incorporated | 76576 |
66 |
| Huawei Technologies Co., Ltd. | 100781 |
53 |
| Ericsson | 20417 |
45 |
| AT&T Intellectual Property I, L.P. | 9886 |
42 |
| Nokia Technologies Oy | 15057 |
41 |
| T-Mobile Innovations LLC | 3213 |
36 |
| LG Electronics Inc. | 69257 |
34 |
| Cisco Technology, Inc. | 18858 |
30 |
| NEC Corporation | 32703 |
29 |
| Google LLC | 38759 |
28 |
| Microsoft Technology Licensing, LLC | 51439 |
27 |
| T-Mobile USA, Inc. | 3668 |
27 |
| ZTE Corporation | 39218 |
26 |
| International Business Machines Corporation | 60644 |
22 |
| Intel Corporation | 45621 |
22 |
| Alcatel Lucent SA | 1723 |
21 |
| Sony Corporation | 32931 |
20 |
| Other owners | 1342 |