- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 5/29 - Structure or manufacture of unitary devices formed of plural heads for more than one track
Patent holdings for IPC class G11B 5/29
Total number of patents in this class: 129
10-year publication summary
|
8
|
18
|
14
|
9
|
13
|
4
|
10
|
4
|
13
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 62742 |
42 |
| JPMorgan Chase Bank, National Association | 8959 |
17 |
| FUJIFILM Corporation | 30562 |
13 |
| Seagate Technology LLC | 3962 |
13 |
| Oracle America, Inc. | 2489 |
6 |
| Western Digital Technologies, Inc. | 1901 |
6 |
| Sony Group Corporation | 15780 |
6 |
| Toshiba Corporation | 12584 |
4 |
| Sony Corporation | 30128 |
2 |
| Oracle International Corporation | 13595 |
2 |
| Toshiba Electronic Devices & Storage Corporation | 2337 |
2 |
| Avago Technologies International Sales Pte. Limited | 8545 |
2 |
| ChannelScience, LLC | 9 |
2 |
| Panasonic Corporation | 18896 |
1 |
| Hewlett-Packard Development Company, L.P. | 25172 |
1 |
| Hitachi Maxell, Ltd. | 419 |
1 |
| Headway Technologies, Inc. | 683 |
1 |
| Marvell International Ltd. | 1101 |
1 |
| EMC IP Holding Company LLC | 10617 |
1 |
| IBM Japan Ltd. | 320 |
1 |
| Other owners | 5 |