- All sections
- H - Electricity
- H03H - Impedance networks, e.g. resonant circuitsresonators
- H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
Patent holdings for IPC class H03H 9/19
Total number of patents in this class: 655
10-year publication summary
|
57
|
74
|
57
|
50
|
39
|
65
|
44
|
57
|
54
|
24
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 25722 |
179 |
| Seiko Epson Corporation | 20248 |
143 |
| Daishinku Corporation | 259 |
83 |
| Nihon Dempa Kogyo Co., Ltd. | 255 |
44 |
| Kyocera Corporation | 14335 |
43 |
| Seiko Instruments Inc. | 455 |
13 |
| HRL Laboratories, LLC | 1631 |
11 |
| Txc Corporation | 38 |
11 |
| Tianjin University | 900 |
7 |
| Centre National de La Recherche Scientifique | 11016 |
4 |
| Samsung Electro-mechanics Co., Ltd. | 6073 |
4 |
| Epson Toyocom Corporation | 9 |
4 |
| Statek Corporation | 17 |
4 |
| Interquip Electronics (Shenzhen) Co., Ltd | 6 |
4 |
| Championx LLC | 633 |
4 |
| Huawei Technologies Co., Ltd. | 123282 |
3 |
| citizen Holdings Co., Ltd. | 268 |
3 |
| Skyworks Filter Solutions Japan Co., Ltd. | 117 |
3 |
| Universite de Montpellier | 1042 |
3 |
| Chengdu Timemaker Crystal Technology Co., Ltd | 6 |
3 |
| Other owners | 82 |