- 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
|
0
|
0
|
4
|
1
|
0
|
0
|
1
|
0
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| State Farm Mutual Automobile Insurance Company | 2560 |
4 |
| TP Lab, Inc. | 121 |
3 |
| AT&T Intellectual Property I, L.P. | 9886 |
2 |
| Verizon Patent And Licensing Inc. | 6900 |
2 |
| LG Electronics Inc. | 69257 |
1 |
| CTI Group (Holding) Inc. | 1 |
1 |
| Ringing Tone Technologies | 1 |
1 |
| Alvaria Cayman (cx) | 322 |
1 |
| Other owners | 0 |