- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/52 - Arrangements for routing dead number calls to operators
Patent holdings for IPC class H04M 3/52
Total number of patents in this class: 20
10-year publication summary
|
0
|
2
|
1
|
0
|
0
|
5
|
3
|
0
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Afiniti, Ltd. | 299 |
4 |
| Genesys Telecommunications Laboratories, Inc. | 749 |
3 |
| NTT DoCoMo, Inc. | 11501 |
2 |
| Afiniti, Inc. | 31 |
2 |
| International Business Machines Corporation | 60644 |
1 |
| Huawei Technologies Co., Ltd. | 100781 |
1 |
| Verizon Patent And Licensing Inc. | 6900 |
1 |
| Microsoft Technology Licensing, LLC | 51439 |
1 |
| Nice Ltd. | 385 |
1 |
| United Services Automobile Association (USAA) | 2514 |
1 |
| Wells Fargo Bank, National Association | 2945 |
1 |
| Xtone, Inc. | 25 |
1 |
| Red Lion International Management Limited | 1 |
1 |
| Other owners | 0 |