- 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: 620
10-year publication summary
|
38
|
57
|
74
|
57
|
50
|
39
|
64
|
44
|
57
|
45
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24861 |
172 |
| Seiko Epson Corporation | 19673 |
138 |
| Daishinku Corporation | 245 |
76 |
| Kyocera Corporation | 14005 |
40 |
| Nihon Dempa Kogyo Co., Ltd. | 256 |
39 |
| Seiko Instruments Inc. | 485 |
13 |
| HRL Laboratories, LLC | 1607 |
11 |
| Txc Corporation | 29 |
9 |
| Tianjin University | 825 |
7 |
| Samsung Electro-mechanics Co., Ltd. | 5671 |
4 |
| Epson Toyocom Corporation | 10 |
4 |
| Statek Corporation | 17 |
4 |
| Interquip Electronics (Shenzhen) Co., Ltd | 6 |
4 |
| Championx LLC | 536 |
4 |
| Centre National de La Recherche Scientifique | 10611 |
3 |
| Huawei Technologies Co., Ltd. | 114620 |
3 |
| citizen Holdings Co., Ltd. | 301 |
3 |
| Skyworks Filter Solutions Japan Co., Ltd. | 123 |
3 |
| Chengdu Timemaker Crystal Technology Co., Ltd | 6 |
3 |
| Ningbo Semiconductor International Corporation (Shanghai Branch) | 146 |
3 |
| Other owners | 77 |