- All sections
- H - Electricity
- H03H - Impedance networks, e.g. resonant circuitsresonators
- H03H 21/00 - Adaptive networks
Patent holdings for IPC class H03H 21/00
Total number of patents in this class: 331
10-year publication summary
|
38
|
29
|
35
|
30
|
28
|
14
|
14
|
17
|
10
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 36702 |
16 |
| Dolby Laboratories Licensing Corporation | 4277 |
12 |
| Huawei Technologies Co., Ltd. | 120661 |
9 |
| Medtronic, Inc. | 9729 |
7 |
| Asahi Kasei Microdevices Corporation | 577 |
6 |
| Avago Technologies International Sales Pte. Limited | 8602 |
6 |
| Gcoa Co., Ltd. | 27 |
6 |
| Apple Inc. | 58181 |
5 |
| Bose Corporation | 3091 |
5 |
| Amazon Technologies, Inc. | 27758 |
4 |
| University of Florida Research Foundation, Inc. | 4150 |
4 |
| Nokia Technologies Oy | 20497 |
4 |
| Avatekh, Inc. | 16 |
4 |
| Wilus Institute of Standards and Technology Inc. | 848 |
4 |
| Telefonaktiebolaget LM Ericsson (publ) | 28655 |
4 |
| Ericsson | 22319 |
3 |
| Robert Bosch GmbH | 43646 |
3 |
| Cisco Technology, Inc. | 22347 |
3 |
| Mitsubishi Electric Corporation | 47655 |
3 |
| NPX B.V. | 2757 |
3 |
| Other owners | 220 |