- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 1/42 - Combinations of transducers with fluid-pressure or other non-electrical amplifying means
Patent holdings for IPC class H04R 1/42
Total number of patents in this class: 55
10-year publication summary
|
3
|
9
|
3
|
6
|
6
|
5
|
3
|
2
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nocira, LLC | 30 |
7 |
| Eargo, Inc. | 69 |
5 |
| Turtle Beach Corporation | 69 |
3 |
| Samsung Electronics Co., Ltd. | 157557 |
2 |
| Cochlear Limited | 1998 |
2 |
| CVR Global, Inc. | 22 |
2 |
| PGS Geophysical AS | 526 |
2 |
| Recursion Pharmaceuticals, Inc. | 227 |
2 |
| Apple Inc. | 58705 |
1 |
| Sony Ericsson Mobile Communications AB | 1392 |
1 |
| International Business Machines Corporation | 62621 |
1 |
| Hewlett-Packard Development Company, L.P. | 25216 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4026 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
1 |
| Tsinghua University | 6212 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5249 |
1 |
| Nokia Technologies Oy | 21069 |
1 |
| ams International AG | 446 |
1 |
| Chiun MAI Communication Systems, Inc. | 350 |
1 |
| Devialet | 148 |
1 |
| Other owners | 18 |