- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 25/04 - Deaf-aid sets comprising pocket amplifiers
Patent holdings for IPC class H04R 25/04
Total number of patents in this class: 39
10-year publication summary
|
3
|
4
|
5
|
5
|
2
|
2
|
1
|
2
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Advanced Bionics AG | 638 |
3 |
| Finewell Co., Ltd. | 59 |
3 |
| Microsoft Technology Licensing, LLC | 54464 |
2 |
| Mayo Foundation for Medical Education and Research | 3386 |
2 |
| Bowie-wiggins LLC | 4 |
2 |
| Earlens Corporation | 142 |
2 |
| Kabushiki Kaisya Leben Hanbai | 51 |
2 |
| GN Hearing A/S | 1363 |
2 |
| Oticon A/S | 892 |
2 |
| Audus B.V. | 8 |
2 |
| The Regents of the University of California | 20790 |
1 |
| IntriCon Corporation | 11 |
1 |
| K/S Himpp | 61 |
1 |
| The Medical College of Wisconsin, Inc. | 456 |
1 |
| Sonitum Inc. | 5 |
1 |
| Starkey Laboratories, Inc. | 1373 |
1 |
| Strata Audio LLC | 3 |
1 |
| Trustees of Boston University | 992 |
1 |
| UWM Research Foundation, Inc. | 167 |
1 |
| Wolfson Dynamic Hearing Pty Ltd | 5 |
1 |
| Other owners | 7 |