- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 21/22 - Supporting the headsSupporting the sockets for plug-in heads while the head is out of operative position
Patent holdings for IPC class G11B 21/22
Total number of patents in this class: 65
10-year publication summary
|
2
|
0
|
2
|
2
|
4
|
12
|
2
|
5
|
3
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JPMorgan Chase Bank, National Association | 8593 |
17 |
| Toshiba Corporation | 12516 |
9 |
| Seagate Technology LLC | 3970 |
8 |
| Toshiba Electronic Devices & Storage Corporation | 2073 |
6 |
| SAE Magnetics (H.K.) Ltd. | 328 |
4 |
| Fujitsu Limited | 17689 |
3 |
| Western Digital Technologies, Inc. | 1756 |
3 |
| Magnecomp Corporation | 201 |
2 |
| Matsushita Electric Industrial Co., Ltd. | 1019 |
1 |
| TDK Corporation | 6873 |
1 |
| NTN Corporation | 4978 |
1 |
| Agency for Science, Technology and Research | 3657 |
1 |
| Asahi Kasei Kabushiki Kaisha | 2706 |
1 |
| Benhov GmbH, LLC | 23 |
1 |
| CLO Systems, LLC | 4 |
1 |
| Dai-Ichi Seiko Co., Ltd. | 262 |
1 |
| EMC IP Holding Company LLC | 10774 |
1 |
| Hitachi Media Electronics Co., Ltd. | 17 |
1 |
| NEC Platforms, Ltd. | 1140 |
1 |
| NOK Corporation | 2238 |
1 |
| Other owners | 1 |