- All sections
- H - Electricity
- H01P - Waveguidesresonators, lines or other devices of the waveguide type
- H01P 1/212 - Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
Patent holdings for IPC class H01P 1/212
Total number of patents in this class: 78
10-year publication summary
|
8
|
2
|
9
|
5
|
9
|
5
|
10
|
7
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 113006 |
9 |
| Murata Manufacturing Co., Ltd. | 24575 |
7 |
| Kyocera Corporation | 13846 |
4 |
| Knowles Cazenovia Inc. | 49 |
4 |
| Ericsson | 21778 |
3 |
| Mitsubishi Electric Corporation | 46160 |
3 |
| Canon Inc. | 40015 |
2 |
| Denso Corporation | 24334 |
2 |
| Lockheed Martin Corporation | 3276 |
2 |
| KMW Inc. | 728 |
2 |
| Siemens Research Center Limited Liability Company | 8 |
2 |
| Samsung Electronics Co., Ltd. | 146534 |
1 |
| Qualcomm Incorporated | 85550 |
1 |
| NEC Corporation | 35734 |
1 |
| Sumitomo Electric Industries, Ltd. | 15511 |
1 |
| ZTE Corporation | 42552 |
1 |
| Fujikura Ltd. | 2938 |
1 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1939 |
1 |
| ACE Technologies Corporation | 140 |
1 |
| Anritsu Corporation | 404 |
1 |
| Other owners | 29 |