- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/673 - Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code
Patent holdings for IPC class H04M 1/673
Total number of patents in this class: 154
10-year publication summary
|
22
|
19
|
21
|
14
|
4
|
6
|
6
|
3
|
3
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 59117 |
24 |
| Kimips LLC | 30 |
18 |
| Samsung Electronics Co., Ltd. | 158605 |
9 |
| Nokia Corporation | 4699 |
6 |
| Kyocera Corporation | 14433 |
6 |
| Malikie Innovations Limited | 6390 |
6 |
| LG Electronics Inc. | 75910 |
5 |
| Huawei Technologies Co., Ltd. | 124379 |
3 |
| ZTE Corporation | 44288 |
3 |
| Microsoft Technology Licensing, LLC | 54524 |
3 |
| Motorola Mobility LLC | 2874 |
3 |
| Huawei Device Co., Ltd. | 2740 |
3 |
| Advanced New Technologies Co., Ltd. | 2287 |
3 |
| Qualcomm Incorporated | 93006 |
2 |
| NEC Corporation | 37227 |
2 |
| AT&T Mobility II LLC | 1889 |
2 |
| Wistron Corporation | 2442 |
2 |
| Nokia Technologies Oy | 21548 |
2 |
| Xiaomi Inc. | 1746 |
2 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 23524 |
2 |
| Other owners | 48 |