- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 5/667 - Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic layer
Patent holdings for IPC class G11B 5/667
Total number of patents in this class: 167
10-year publication summary
|
8
|
13
|
9
|
7
|
8
|
8
|
6
|
2
|
3
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JPMorgan Chase Bank, National Association | 8977 |
32 |
| Seagate Technology LLC | 3974 |
19 |
| Sony Corporation | 29876 |
15 |
| Resonac Hard Disk Corporation | 208 |
14 |
| Showa Denko K.K. | 2047 |
13 |
| SANYO Special Steel Co., Ltd. | 250 |
13 |
| Toshiba Corporation | 12754 |
9 |
| Fuji Electric Co., Ltd. | 5565 |
6 |
| International Business Machines Corporation | 62871 |
4 |
| Hoya Corporation | 2398 |
4 |
| Toshiba Electronic Devices & Storage Corporation | 2439 |
4 |
| Tohoku University | 3051 |
3 |
| Showa Denko HD Singapore Pte Ltd. | 5 |
3 |
| Sony Group Corporation | 16259 |
3 |
| Hitachi Metals, Ltd. | 1813 |
2 |
| Western Digital Technologies, Inc. | 1923 |
2 |
| Fuji Electric Device Technology Co., Ltd. | 9 |
2 |
| Fuji Electric (Malaysia) Sdn, Bhd. | 5 |
2 |
| Hoya Glass Disk Vietnam II Ltd. | 15 |
2 |
| Seagate Technology International | 13 |
2 |
| Other owners | 13 |