- 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: 248
10-year publication summary
|
13
|
17
|
22
|
24
|
28
|
25
|
20
|
13
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 28829 |
31 |
| Murata Manufacturing Co., Ltd. | 23743 |
27 |
| Canon Inc. | 38240 |
13 |
| Taiyo Yuden Co., Ltd. | 1889 |
9 |
| Ricoh Company, Ltd. | 13222 |
8 |
| TDK Corporation | 6543 |
7 |
| NGK Insulators, Ltd. | 4794 |
6 |
| Daikin Industries, Ltd. | 9851 |
6 |
| Canon Kabushiki Kaisha | 6954 |
6 |
| Kyocera Corporation | 13358 |
5 |
| Seiko Epson Corporation | 19005 |
4 |
| Toshiba Medical Systems Corporation | 2157 |
3 |
| Olympus Corporation | 13270 |
3 |
| Epcos AG | 731 |
3 |
| Continental Automotive GmbH | 5540 |
3 |
| a School Corporation Kansai University | 92 |
3 |
| Kureha Corporation | 1024 |
3 |
| Physik Instrumente (PI) GmbH & Co. KG | 254 |
3 |
| Konica Minolta, Inc. | 8552 |
2 |
| Industry-University Cooperation Foundation Hanyang University | 1007 |
2 |
| Other owners | 101 |