- 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: 195
10-year publication summary
|
19
|
22
|
26
|
29
|
18
|
18
|
12
|
19
|
16
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Skyworks Solutions, Inc. | 3609 |
25 |
| Raytheon Company | 8442 |
12 |
| International Business Machines Corporation | 60178 |
11 |
| Honeywell International Inc. | 14022 |
7 |
| Huawei Technologies Co., Ltd. | 106915 |
6 |
| Shenzhen Huayang Technology Development Co., Ltd | 15 |
6 |
| Allumax TTI, LLC | 41 |
6 |
| Trans-tech, Inc. | 32 |
5 |
| Ericsson | 21171 |
4 |
| Mitsubishi Electric Corporation | 44904 |
4 |
| Harris Corporation | 1511 |
4 |
| The Trustees of Columbia University in the City of New York | 3524 |
4 |
| Qorvo US, Inc. | 2137 |
4 |
| Murata Manufacturing Co., Ltd. | 23743 |
3 |
| Lockheed Martin Corporation | 3308 |
3 |
| 3D Glass Solutions, Inc. | 79 |
3 |
| Partron Co., Ltd. | 131 |
3 |
| Intel Corporation | 46153 |
2 |
| TDK Corporation | 6543 |
2 |
| ZTE Corporation | 41096 |
2 |
| Other owners | 79 |