- 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: 408
10-year publication summary
|
39
|
45
|
29
|
42
|
57
|
32
|
40
|
36
|
27
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 1410 |
67 |
| GoPro, Inc. | 2117 |
19 |
| Apple Inc. | 58742 |
18 |
| Samsung Electronics Co., Ltd. | 157719 |
17 |
| Amogreentech Co., Ltd. | 646 |
12 |
| Atlas Elektronik GmbH | 384 |
10 |
| Teledyne Instruments, Inc. | 223 |
9 |
| Finnovate Group LLC | 30 |
9 |
| Nitto Denko Corporation | 8536 |
8 |
| W. L. Gore & Associates, Inc. | 2720 |
7 |
| Goertek Inc. | 2821 |
7 |
| Raytheon Company | 8448 |
6 |
| ThyssenKrupp AG | 3409 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2858 |
5 |
| Sooriakumar, Kathirgamasundaram | 13 |
5 |
| Gentex Corporation | 1968 |
4 |
| PGS Geophysical AS | 526 |
4 |
| Sony Corporation | 30181 |
3 |
| Lockheed Martin Corporation | 3255 |
3 |
| Casio Computer Co., Ltd. | 3496 |
3 |
| Other owners | 186 |