- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 1/44 - Special adaptations for subaqueous use, e.g. for hydrophone
Patent holdings for IPC class H04R 1/44
Total number of patents in this class: 387
10-year publication summary
|
27
|
39
|
45
|
29
|
42
|
57
|
32
|
39
|
35
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 1106 |
60 |
| GoPro, Inc. | 1968 |
19 |
| Apple Inc. | 54714 |
17 |
| Samsung Electronics Co., Ltd. | 145630 |
15 |
| Amogreentech Co., Ltd. | 607 |
12 |
| Atlas Elektronik GmbH | 397 |
10 |
| Teledyne Instruments, Inc. | 232 |
9 |
| Finnovate Group LLC | 28 |
9 |
| Nitto Denko Corporation | 8217 |
8 |
| W. L. Gore & Associates, Inc. | 2683 |
7 |
| Raytheon Company | 8397 |
6 |
| Goertek Inc. | 2654 |
6 |
| ThyssenKrupp AG | 3280 |
5 |
| Massachusetts Institute of Technology | 10041 |
4 |
| The United States of America as represented by the Secretary of the Navy | 2744 |
4 |
| PGS Geophysical AS | 536 |
4 |
| Innogrity Pte Ltd | 8 |
4 |
| Sony Corporation | 31080 |
3 |
| Lockheed Martin Corporation | 3277 |
3 |
| Casio Computer Co., Ltd. | 3424 |
3 |
| Other owners | 179 |