- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/06 - Calling substations, e.g. by ringing the calling signal being supplied from the subscriber's line circuit
Patent holdings for IPC class H04M 3/06
Total number of patents in this class: 15
10-year publication summary
|
4
|
1
|
0
|
0
|
2
|
0
|
2
|
1
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| State Farm Mutual Automobile Insurance Company | 3338 |
6 |
| Verizon Patent And Licensing Inc. | 7495 |
2 |
| TP Lab, Inc. | 81 |
2 |
| LG Electronics Inc. | 75045 |
1 |
| AT&T Intellectual Property I, L.P. | 9859 |
1 |
| Cisco Technology, Inc. | 22300 |
1 |
| CTI Group (Holding) Inc. | 1 |
1 |
| Alvaria, Inc. | 287 |
1 |
| Other owners | 0 |