- All sections
- H - Electricity
- H03H - Impedance networks, e.g. resonant circuits; resonators
- 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: 549
10-year publication summary
|
29
|
38
|
57
|
74
|
57
|
50
|
37
|
64
|
44
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 22355 |
150 |
| Seiko Epson Corporation | 18724 |
122 |
| Daishinku Corporation | 220 |
63 |
| Nihon Dempa Kogyo Co., Ltd. | 265 |
37 |
| Kyocera Corporation | 12735 |
33 |
| Seiko Instruments Inc. | 660 |
13 |
| HRL Laboratories, LLC | 1588 |
10 |
| Tianjin University | 695 |
7 |
| Epson Toyocom Corporation | 24 |
6 |
| Txc Corporation | 20 |
5 |
| Ningbo Semiconductor International Corporation (Shanghai Branch) | 155 |
5 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
4 |
| Interquip Electronics (Shenzhen) Co., Ltd | 6 |
4 |
| Championx LLC | 311 |
4 |
| citizen Holdings Co., Ltd. | 332 |
3 |
| Piedek Technical Laboratory | 6 |
3 |
| Skyworks Filter Solutions Japan Co., Ltd. | 136 |
3 |
| Statek Corporation | 13 |
3 |
| Chengdu Timemaker Crystal Technology Co., Ltd | 4 |
3 |
| Samsung Electronics Co., Ltd. | 131630 |
2 |
| Other owners | 69 |