- All sections
- H - Electricity
- H01P - Waveguidesresonators, lines or other devices of the waveguide type
- H01P 1/38 - Circulators
Patent holdings for IPC class H01P 1/38
Total number of patents in this class: 204
10-year publication summary
|
18
|
25
|
29
|
18
|
18
|
13
|
19
|
17
|
9
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Skyworks Solutions, Inc. | 3884 |
25 |
| Raytheon Company | 8463 |
12 |
| International Business Machines Corporation | 62182 |
11 |
| Honeywell International Inc. | 12796 |
7 |
| Huawei Technologies Co., Ltd. | 119891 |
7 |
| Shenzhen Huayang Technology Development Co., Ltd | 16 |
6 |
| Allumax TTI, LLC | 49 |
5 |
| Mitsubishi Electric Corporation | 47556 |
4 |
| TDK Corporation | 6803 |
4 |
| The Trustees of Columbia University in the City of New York | 3616 |
4 |
| Qorvo US, Inc. | 2363 |
4 |
| Trans-tech, Inc. | 30 |
4 |
| Ericsson | 22283 |
3 |
| Murata Manufacturing Co., Ltd. | 25506 |
3 |
| Lockheed Martin Corporation | 3278 |
3 |
| Harris Corporation | 1346 |
3 |
| 3D Glass Solutions, Inc. | 83 |
3 |
| Focusmw Ip. Inc. | 61 |
3 |
| Hengdian Group Dmegc Magnetics Co., Ltd | 182 |
3 |
| HRL Laboratories, LLC | 1623 |
3 |
| Other owners | 87 |