- 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: 44
10-year publication summary
|
6
|
4
|
3
|
6
|
5
|
2
|
1
|
2
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 12735 |
4 |
| NEC Corporation | 32703 |
3 |
| NTT DoCoMo, Inc. | 11501 |
3 |
| ZTE Corporation | 39218 |
3 |
| Simo Holdings Inc. | 25 |
3 |
| TBD Safety, LLC | 4 |
3 |
| Microsoft Technology Licensing, LLC | 51439 |
2 |
| Giesecke & Devrient GmbH | 990 |
2 |
| Shanghai Fudan Microelectronics Group Company Limited | 13 |
2 |
| Giesecke+Devrient Mobile Security GmbH | 586 |
2 |
| Malikie Innovations Limited | 7703 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Sony Ericsson Mobile Communications AB | 2014 |
1 |
| Nokia Corporation | 6965 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
| Renesas Electronics Corporation | 6305 |
1 |
| Huawei Device Co., Ltd. | 2758 |
1 |
| Harris Corporation | 1591 |
1 |
| Nokia Technologies Oy | 15057 |
1 |
| Boe Technology Group Co., Ltd. | 35384 |
1 |
| Other owners | 6 |