- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/663 - Preventing unauthorised calls to a telephone set
Patent holdings for IPC class H04M 1/663
Total number of patents in this class: 383
10-year publication summary
|
40
|
33
|
26
|
43
|
26
|
23
|
14
|
11
|
9
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 59241 |
33 |
| Huawei Technologies Co., Ltd. | 124837 |
23 |
| Microsoft Technology Licensing, LLC | 54586 |
17 |
| Samsung Electronics Co., Ltd. | 159029 |
15 |
| ZTE Corporation | 44374 |
13 |
| International Business Machines Corporation | 62805 |
11 |
| OnePIN, Inc. | 70 |
10 |
| Malikie Innovations Limited | 6363 |
9 |
| Qualcomm Incorporated | 93376 |
8 |
| Tencent Technology (Shenzhen) Company Limited | 16195 |
8 |
| AT&T Intellectual Property I, L.P. | 10038 |
7 |
| Google LLC | 44796 |
7 |
| Beijing Qihoo Technology Company Limited | 950 |
6 |
| CenturyLink Intellectual Property LLC | 1287 |
6 |
| YouMail, Inc. | 54 |
6 |
| Ericsson | 23055 |
5 |
| Huawei Device Co., Ltd. | 2741 |
5 |
| First Orion Corp. | 187 |
5 |
| NeuStar, Inc. | 107 |
5 |
| Ooma, Inc. | 78 |
5 |
| Other owners | 179 |