- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/50 - Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
Patent holdings for IPC class H04M 1/50
Total number of patents in this class: 23
10-year publication summary
|
2
|
0
|
2
|
1
|
2
|
1
|
0
|
0
|
0
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BlackBerry Limited | 5958 |
4 |
| Lisnr, Inc. | 42 |
4 |
| Research In Motion Limited | 2283 |
3 |
| LG Electronics Inc. | 69257 |
2 |
| Qualcomm Incorporated | 76576 |
1 |
| Cisco Technology, Inc. | 18858 |
1 |
| Marvell International Ltd. | 1224 |
1 |
| ZTE Corporation | 39218 |
1 |
| Microsoft Technology Licensing, LLC | 51439 |
1 |
| GTE Automatic Electric Incorporated | 8 |
1 |
| Keefe Commissary Network, L.L.C. | 6 |
1 |
| Sanechips Technology Co., Ltd. | 1030 |
1 |
| Marvell Asia PTE, Ltd. | 6841 |
1 |
| Cavium International | 5549 |
1 |
| Other owners | 0 |