- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 41/257 - Treating devices or parts thereof to modify a piezo-electric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
Patent holdings for IPC class H01L 41/257
Total number of patents in this class: 227
10-year publication summary
|
17
|
22
|
24
|
28
|
23
|
17
|
10
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30514 |
31 |
| Murata Manufacturing Co., Ltd. | 25744 |
25 |
| Canon Inc. | 43817 |
12 |
| Taiyo Yuden Co., Ltd. | 2029 |
9 |
| Ricoh Company, Ltd. | 13342 |
8 |
| TDK Corporation | 6858 |
6 |
| Canon Kabushiki Kaisha | 7314 |
6 |
| Kyocera Corporation | 14359 |
5 |
| Daikin Industries, Ltd. | 10499 |
5 |
| Seiko Epson Corporation | 20256 |
4 |
| Toshiba Medical Systems Corporation | 2041 |
3 |
| Olympus Corporation | 12939 |
3 |
| Epcos AG | 641 |
3 |
| Continental Automotive GmbH | 4503 |
3 |
| NGK Insulators, Ltd. | 5236 |
3 |
| a School Corporation Kansai University | 91 |
3 |
| Kureha Corporation | 1059 |
3 |
| Physik Instrumente (PI) GmbH & Co. KG | 226 |
3 |
| GE Precision Healthcare LLC | 5788 |
3 |
| Konica Minolta, Inc. | 9119 |
2 |
| Other owners | 87 |