- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 7/0033 - Recording, reproducing or erasing systems characterised by the shape of the carrier with cards
Patent holdings for IPC class G11B 7/0033
Total number of patents in this class: 11
10-year publication summary
|
2
|
1
|
1
|
1
|
1
|
1
|
1
|
2
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 30451 |
2 |
| Fujikura Ltd. | 3038 |
2 |
| Sony Group Corporation | 15128 |
2 |
| NEC Corporation | 36595 |
1 |
| Toshiba Corporation | 12677 |
1 |
| Koninklijke Philips Electronics N.V. | 8089 |
1 |
| Dai Nippon Printing Co., Ltd. | 4204 |
1 |
| Moorecroft LLP | 2 |
1 |
| Other owners | 0 |