- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/665 - Preventing unauthorised calls to a telephone set by checking the validity of a code
Patent holdings for IPC class H04M 1/665
Total number of patents in this class: 28
10-year publication summary
|
5
|
6
|
1
|
6
|
2
|
1
|
1
|
0
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semafone Limited | 12 |
3 |
| ZTE Corporation | 43749 |
2 |
| Microsoft Technology Licensing, LLC | 54289 |
2 |
| Samsung Electronics Co., Ltd. | 155224 |
1 |
| Apple Inc. | 58268 |
1 |
| BlackBerry Limited | 4930 |
1 |
| Qualcomm Incorporated | 90870 |
1 |
| AT&T Intellectual Property I, L.P. | 9905 |
1 |
| Bank of America Corporation | 8273 |
1 |
| Alibaba Group Holding Limited | 6906 |
1 |
| GM Global Technology Operations LLC | 15941 |
1 |
| Industrial Technology Research Institute | 5128 |
1 |
| NTT DoCoMo, Inc. | 14454 |
1 |
| AT&T Mobility II LLC | 1895 |
1 |
| Nokia Technologies Oy | 20731 |
1 |
| Invoca, Inc. | 75 |
1 |
| The Toronto-Dominion Bank | 3134 |
1 |
| Qiku Internet Network Scientific (Shenzhen) Co., Ltd. | 61 |
1 |
| Shenzhen Yiteli Network Technology Co., Ltd | 48 |
1 |
| Stephanie Carole Berlin | 1 |
1 |
| Other owners | 4 |