- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 15/04 - Recording calls in printed, perforated, or other permanent form
Patent holdings for IPC class H04M 15/04
Total number of patents in this class: 15
10-year publication summary
|
1
|
1
|
2
|
5
|
1
|
3
|
0
|
3
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Inmate Text Service, LLC | 5 |
3 |
| Value-Added Communications, Inc. | 20 |
2 |
| AT&T Intellectual Property I, L.P. | 9886 |
1 |
| Ericsson | 20417 |
1 |
| Deutsche Telekom AG | 1801 |
1 |
| Five9, Inc. | 38 |
1 |
| T-Mobile International AG & Co. KG | 102 |
1 |
| T-Mobile USA, Inc. | 3668 |
1 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
1 |
| BlueNote Networks, Inc. | 4 |
1 |
| FUJIFILM Business Innovation Corp. | 7395 |
1 |
| The Fifth Lab Incorporated | 6 |
1 |
| Other owners | 0 |