- 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: 54
10-year publication summary
|
7
|
3
|
9
|
3
|
6
|
6
|
5
|
3
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nocira, LLC | 26 |
6 |
| Eargo, Inc. | 67 |
5 |
| Turtle Beach Corporation | 69 |
3 |
| Samsung Electronics Co., Ltd. | 144675 |
2 |
| Cochlear Limited | 1873 |
2 |
| CVR Global, Inc. | 25 |
2 |
| PGS Geophysical AS | 536 |
2 |
| Recursion Pharmaceuticals, Inc. | 183 |
2 |
| Apple Inc. | 54577 |
1 |
| Sony Ericsson Mobile Communications AB | 1802 |
1 |
| International Business Machines Corporation | 61144 |
1 |
| Hewlett-Packard Development Company, L.P. | 25933 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4040 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 31084 |
1 |
| Tsinghua University | 5855 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4914 |
1 |
| Nokia Technologies Oy | 17625 |
1 |
| ams International AG | 429 |
1 |
| Chiun MAI Communication Systems, Inc. | 341 |
1 |
| Cunningham Bounds, LLC | 4 |
1 |
| Other owners | 18 |