- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/80 - Telephone line holding circuits
Patent holdings for IPC class H04M 1/80
Total number of patents in this class: 12
10-year publication summary
|
2
|
1
|
1
|
1
|
0
|
1
|
0
|
2
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qualcomm Incorporated | 76576 |
1 |
| AT&T Intellectual Property I, L.P. | 9886 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
| Ericsson | 20417 |
1 |
| NTT DoCoMo, Inc. | 11501 |
1 |
| BCE Inc. | 431 |
1 |
| Nortel Networks Limited | 103 |
1 |
| Orange | 1759 |
1 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
1 |
| Shenzhen Yoomaa Technology Co., Ltd. | 22 |
1 |
| Cluster LLC | 17 |
1 |
| Arlington Technologies, LLC | 642 |
1 |
| Other owners | 0 |