- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/44 - Additional connecting arrangements for providing access to frequently-wanted subscribers, e.g. abbreviated dialling
Patent holdings for IPC class H04M 3/44
Total number of patents in this class: 77
10-year publication summary
|
19
|
14
|
14
|
8
|
7
|
3
|
3
|
3
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Microsoft Technology Licensing, LLC | 51439 |
6 |
| Zhuangzi Li and Associates | 8 |
5 |
| Amazon Technologies, Inc. | 24422 |
3 |
| BCE Inc. | 431 |
3 |
| Google LLC | 38759 |
3 |
| NEC Corporation | 32703 |
2 |
| ZTE Corporation | 39218 |
2 |
| Genesys Telecommunications Laboratories, Inc. | 749 |
2 |
| Movius Interactive Corporation | 48 |
2 |
| REBTEL Networks AB | 24 |
2 |
| Shanghai Chule (Coo Tek) Information Technology Co., Ltd. | 3 |
2 |
| Orange | 1759 |
2 |
| Thryv, Inc. | 326 |
2 |
| Alvaria Cayman (cx) | 322 |
2 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
1 |
| Cisco Technology, Inc. | 18858 |
1 |
| Alcatel-Lucent USA Inc. | 604 |
1 |
| Google Technology Holdings LLC | 2658 |
1 |
| Hyundai Motor Company | 19021 |
1 |
| Avaya Inc. | 1529 |
1 |
| Other owners | 33 |