- 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: 259
10-year publication summary
|
23
|
13
|
17
|
22
|
24
|
29
|
29
|
24
|
13
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
32 |
| Murata Manufacturing Co., Ltd. | 22355 |
27 |
| Canon Inc. | 36841 |
13 |
| Taiyo Yuden Co., Ltd. | 1809 |
9 |
| Ricoh Company, Ltd. | 13266 |
8 |
| TDK Corporation | 6306 |
8 |
| NGK Insulators, Ltd. | 4589 |
6 |
| Daikin Industries, Ltd. | 9495 |
6 |
| Canon Kabushiki Kaisha | 6884 |
6 |
| Kyocera Corporation | 12735 |
5 |
| Seiko Epson Corporation | 18724 |
4 |
| Epcos AG | 778 |
4 |
| Toshiba Medical Systems Corporation | 2236 |
3 |
| Olympus Corporation | 13667 |
3 |
| Continental Automotive GmbH | 5573 |
3 |
| a School Corporation Kansai University | 95 |
3 |
| JFE Mineral Company, Ltd. | 67 |
3 |
| Kureha Corporation | 1026 |
3 |
| Physik Instrumente (PI) GmbH & Co. KG | 253 |
3 |
| Xaar Technology Limited | 138 |
3 |
| Other owners | 107 |