- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/51 - Centralised call answering arrangements requiring operator intervention
Patent holdings for IPC class H04M 3/51
Total number of patents in this class: 4278
10-year publication summary
|
315
|
456
|
485
|
443
|
479
|
446
|
539
|
581
|
407
|
352
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Genesys Telecommunications Laboratories, Inc. | 762 |
289 |
| Avaya Inc. | 2243 |
211 |
| Afiniti, Ltd. | 285 |
139 |
| United Services Automobile Association (USAA) | 2377 |
132 |
| Noble Systems Corporation | 197 |
111 |
| Nice Ltd. | 380 |
90 |
| Capital One Services, LLC. | 6957 |
86 |
| Motorola Solutions, Inc. | 4331 |
83 |
| Verint Americas Inc. | 525 |
69 |
| Virtual Hold Technology Solutions, LLC | 146 |
65 |
| International Business Machines Corporation | 61951 |
57 |
| Microsoft Technology Licensing, LLC | 50893 |
54 |
| Wells Fargo Bank, National Association | 2623 |
53 |
| AT&T Intellectual Property I, L.P. | 10805 |
52 |
| West Technology Group, LLC | 412 |
51 |
| 8x8, Inc. | 377 |
45 |
| State Farm Mutual Automobile Insurance Company | 2387 |
45 |
| T-Mobile USA, Inc. | 3533 |
45 |
| Verizon Patent And Licensing Inc. | 6951 |
40 |
| ZTE Corporation | 38053 |
39 |
| Other owners | 2522 |