- 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: 611
10-year publication summary
|
38
|
57
|
74
|
57
|
50
|
39
|
64
|
44
|
57
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24369 |
166 |
| Seiko Epson Corporation | 19281 |
137 |
| Daishinku Corporation | 241 |
76 |
| Nihon Dempa Kogyo Co., Ltd. | 253 |
40 |
| Kyocera Corporation | 13706 |
37 |
| Seiko Instruments Inc. | 503 |
13 |
| HRL Laboratories, LLC | 1599 |
11 |
| Tianjin University | 791 |
7 |
| Epson Toyocom Corporation | 19 |
6 |
| Txc Corporation | 23 |
6 |
| Samsung Electro-mechanics Co., Ltd. | 5529 |
4 |
| Statek Corporation | 17 |
4 |
| Interquip Electronics (Shenzhen) Co., Ltd | 6 |
4 |
| Championx LLC | 491 |
4 |
| Centre National de La Recherche Scientifique | 10350 |
3 |
| Huawei Technologies Co., Ltd. | 111237 |
3 |
| citizen Holdings Co., Ltd. | 310 |
3 |
| Piedek Technical Laboratory | 3 |
3 |
| Skyworks Filter Solutions Japan Co., Ltd. | 124 |
3 |
| Chengdu Timemaker Crystal Technology Co., Ltd | 5 |
3 |
| Other owners | 78 |