- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 21/12 - Raising and loweringBack-spacing or forward-spacing along trackReturning to starting position
Patent holdings for IPC class G11B 21/12
Total number of patents in this class: 101
10-year publication summary
|
2
|
3
|
1
|
2
|
4
|
11
|
6
|
3
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 3972 |
16 |
| JPMorgan Chase Bank, National Association | 8601 |
16 |
| Toshiba Corporation | 12523 |
8 |
| Fujitsu Limited | 17665 |
8 |
| Toshiba Electronic Devices & Storage Corporation | 2083 |
5 |
| Murata Manufacturing Co., Ltd. | 24907 |
3 |
| Rohm Co., Ltd. | 6538 |
3 |
| Western Digital Technologies, Inc. | 1762 |
3 |
| Texas Instruments Incorporated | 19481 |
2 |
| Renesas Electronics Corporation | 5956 |
2 |
| SAE Magnetics (H.K.) Ltd. | 328 |
2 |
| Toshiba Storage Device Corporation | 55 |
2 |
| Resonac Hard Disk Corporation | 185 |
2 |
| Samsung Electronics Co., Ltd. | 148584 |
1 |
| International Business Machines Corporation | 61651 |
1 |
| Canon Inc. | 40790 |
1 |
| Robert Bosch GmbH | 42941 |
1 |
| Maxtor Corporation | 10 |
1 |
| TDK Corporation | 6879 |
1 |
| Headway Technologies, Inc. | 694 |
1 |
| Other owners | 22 |