- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 25/04 - Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing using flat record carriers, e.g. disc, card
Patent holdings for IPC class G11B 25/04
Total number of patents in this class: 326
10-year publication summary
|
20
|
37
|
34
|
27
|
22
|
18
|
16
|
23
|
9
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Corporation | 12698 |
53 |
| JPMorgan Chase Bank, National Association | 8657 |
52 |
| Toshiba Electronic Devices & Storage Corporation | 2281 |
44 |
| Seagate Technology LLC | 3979 |
34 |
| Western Digital Technologies, Inc. | 1804 |
15 |
| Nidec Corporation | 2771 |
13 |
| Hoya Corporation | 2736 |
8 |
| Mitsubishi Electric Corporation | 47655 |
6 |
| Nidec Sankyo Corporation | 1061 |
6 |
| Minebea Mitsumi Inc. | 1886 |
6 |
| Panasonic Corporation | 19530 |
5 |
| Hitachi, Ltd. | 15918 |
4 |
| Fujitsu Limited | 17007 |
3 |
| Dell Products L.P. | 16416 |
3 |
| Pioneer Corporation | 3837 |
3 |
| The Furukawa Electric Co., Ltd. | 3701 |
3 |
| UACJ Corporation | 725 |
3 |
| Lnw Gaming, Inc. | 1881 |
3 |
| Sony Corporation | 30368 |
2 |
| Headway Technologies, Inc. | 684 |
2 |
| Other owners | 58 |