- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 21/08 - Track changing or selecting
Patent holdings for IPC class G11B 21/08
Total number of patents in this class: 231
10-year publication summary
|
7
|
4
|
7
|
4
|
10
|
9
|
11
|
13
|
4
|
1
|
| 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 | 8556 |
28 |
| Toshiba Corporation | 12320 |
22 |
| Toshiba Electronic Devices & Storage Corporation | 1954 |
16 |
| Seagate Technology LLC | 3971 |
14 |
| Suncall Corporation | 187 |
7 |
| Sony Corporation | 31093 |
5 |
| Oracle America, Inc. | 3150 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
5 |
| Pioneer Corporation | 4377 |
5 |
| Teradyne, Inc. | 541 |
5 |
| International Business Machines Corporation | 61207 |
4 |
| Oracle International Corporation | 12925 |
4 |
| Seiko Epson Corporation | 19319 |
3 |
| SAE Magnetics (H.K.) Ltd. | 331 |
3 |
| EMC IP Holding Company LLC | 10835 |
3 |
| Intri-plex Technologies, Inc. | 37 |
3 |
| Magnecomp Corporation | 201 |
3 |
| Rakuten Group, Inc. | 1628 |
3 |
| Resonac Hard Disk Corporation | 178 |
3 |
| Panasonic Corporation | 20136 |
2 |
| Other owners | 88 |