- 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: 397
10-year publication summary
|
36
|
44
|
29
|
38
|
55
|
32
|
40
|
36
|
24
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 1264 |
60 |
| GoPro, Inc. | 2070 |
19 |
| Samsung Electronics Co., Ltd. | 152304 |
17 |
| Apple Inc. | 57432 |
17 |
| Amogreentech Co., Ltd. | 625 |
12 |
| Atlas Elektronik GmbH | 391 |
10 |
| Finnovate Group LLC | 29 |
9 |
| Nitto Denko Corporation | 8421 |
8 |
| Teledyne Instruments, Inc. | 230 |
8 |
| W. L. Gore & Associates, Inc. | 2715 |
7 |
| Goertek Inc. | 2735 |
7 |
| Raytheon Company | 8473 |
6 |
| ThyssenKrupp AG | 3426 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2818 |
5 |
| Sooriakumar, Kathirgamasundaram | 12 |
5 |
| PGS Geophysical AS | 529 |
4 |
| Sony Corporation | 30536 |
3 |
| Lockheed Martin Corporation | 3274 |
3 |
| Casio Computer Co., Ltd. | 3470 |
3 |
| Thales Australia Limited | 33 |
3 |
| Other owners | 185 |