- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/675 - Preventing unauthorised calls from a telephone set by electronic means the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip
Patent holdings for IPC class H04M 1/675
Total number of patents in this class: 45
10-year publication summary
|
4
|
3
|
6
|
5
|
2
|
1
|
2
|
1
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 13409 |
4 |
| NEC Corporation | 34584 |
3 |
| NTT DoCoMo, Inc. | 12382 |
3 |
| ZTE Corporation | 41221 |
3 |
| Simo Holdings Inc. | 28 |
3 |
| TBD Safety, LLC | 4 |
3 |
| Samsung Electronics Co., Ltd. | 139798 |
2 |
| Microsoft Technology Licensing, LLC | 52979 |
2 |
| Giesecke & Devrient GmbH | 914 |
2 |
| Giesecke+Devrient Mobile Security GmbH | 503 |
2 |
| Malikie Innovations Limited | 7342 |
2 |
| Sony Ericsson Mobile Communications AB | 1868 |
1 |
| Nokia Corporation | 6116 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 2681 |
1 |
| Hitachi Construction Machinery Co., Ltd. | 2566 |
1 |
| Renesas Electronics Corporation | 6152 |
1 |
| Huawei Device Co., Ltd. | 2758 |
1 |
| Harris Corporation | 1497 |
1 |
| Nokia Technologies Oy | 16838 |
1 |
| Boe Technology Group Co., Ltd. | 39133 |
1 |
| Other owners | 7 |