- 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: 102
10-year publication summary
|
2
|
3
|
1
|
2
|
4
|
11
|
6
|
2
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 3979 |
16 |
| JPMorgan Chase Bank, National Association | 8445 |
15 |
| Toshiba Corporation | 12104 |
8 |
| Fujitsu Limited | 18413 |
8 |
| Toshiba Electronic Devices & Storage Corporation | 1822 |
5 |
| Murata Manufacturing Co., Ltd. | 23881 |
3 |
| Rohm Co., Ltd. | 6405 |
3 |
| Matsushita Electric Industrial Co., Ltd. | 2599 |
2 |
| Texas Instruments Incorporated | 19430 |
2 |
| Renesas Electronics Corporation | 6141 |
2 |
| SAE Magnetics (H.K.) Ltd. | 333 |
2 |
| Western Digital Technologies, Inc. | 1670 |
2 |
| Toshiba Storage Device Corporation | 55 |
2 |
| Resonac Hard Disk Corporation | 172 |
2 |
| Samsung Electronics Co., Ltd. | 140289 |
1 |
| International Business Machines Corporation | 60336 |
1 |
| Canon Inc. | 38486 |
1 |
| Robert Bosch GmbH | 41933 |
1 |
| Koninklijke Philips Electronics N.V. | 10656 |
1 |
| Maxtor Corporation | 13 |
1 |
| Other owners | 24 |