- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/28 - Automatic routine testing
Patent holdings for IPC class H04M 3/28
Total number of patents in this class: 55
10-year publication summary
|
13
|
7
|
7
|
8
|
4
|
1
|
7
|
3
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cyara Solutions Pty Ltd | 67 |
25 |
| Genesys Cloud Services, Inc., FORMERLY Genesys Telecommunications Laboratories, Inc. | 950 |
8 |
| AT&T Intellectual Property I, L.P. | 9437 |
2 |
| Akamai Technologies, Inc. | 741 |
2 |
| BlackBerry Limited | 5171 |
1 |
| Microsoft Technology Licensing, LLC | 53473 |
1 |
| NTT Communications Corporation | 292 |
1 |
| Nippon Telegraph and Telephone West Corporation | 25 |
1 |
| Nippon Telegraph And Telephone East Corporation | 25 |
1 |
| RingCentral, Inc. | 748 |
1 |
| ADTRAN GmbH | 27 |
1 |
| Blue Jeans Network, Inc. | 18 |
1 |
| Harman International Industries, Incorporated | 2592 |
1 |
| Martello Technologies Corporation | 12 |
1 |
| NEC Platforms, Ltd. | 1146 |
1 |
| Nokia Siemens Networks GmbH & Co. KG | 512 |
1 |
| Pegatron Corporation | 588 |
1 |
| ROHDE & Schwarz GmbH & Co. KG | 1916 |
1 |
| Volkswagen Aktiengesellschaft | 211 |
1 |
| X Development LLC | 1301 |
1 |
| Other owners | 2 |