- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 7/1381 - Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
Patent holdings for IPC class G11B 7/1381
Total number of patents in this class: 21
10-year publication summary
|
1
|
2
|
2
|
2
|
2
|
1
|
0
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0
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0
|
0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 30181 |
5 |
| Panasonic Corporation | 19019 |
3 |
| Hitachi Consumer Electronics Co., Ltd. | 282 |
2 |
| Hamamatsu Photonics K.K. | 4681 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
1 |
| Purdue Research Foundation | 3916 |
1 |
| Hitachi-LG Data Storage, Inc. | 182 |
1 |
| IM Co., Ltd. | 16 |
1 |
| National Central University | 256 |
1 |
| Sony Semiconductor Solutions Corporation | 11577 |
1 |
| Universite de Bordeaux 1 | 53 |
1 |
| Amethystum Storage Technology Co., Ltd. | 14 |
1 |
| Folio Photonics, Inc. | 6 |
1 |
| Other owners | 0 |