- 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: 244
10-year publication summary
|
14
|
7
|
4
|
7
|
4
|
10
|
9
|
11
|
13
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JPMorgan Chase Bank, National Association | 10964 |
27 |
| Toshiba Corporation | 12017 |
22 |
| Toshiba Electronic Devices & Storage Corporation | 1602 |
16 |
| Seagate Technology LLC | 4228 |
14 |
| Suncall Corporation | 166 |
7 |
| Sony Corporation | 32931 |
6 |
| Pioneer Corporation | 4843 |
6 |
| Oracle America, Inc. | 3928 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
5 |
| Teradyne, Inc. | 579 |
5 |
| Seiko Epson Corporation | 18724 |
4 |
| Oracle International Corporation | 12313 |
4 |
| International Business Machines Corporation | 60644 |
3 |
| Panasonic Corporation | 20786 |
3 |
| SAE Magnetics (H.K.) Ltd. | 355 |
3 |
| EMC IP Holding Company LLC | 11079 |
3 |
| Intri-plex Technologies, Inc. | 39 |
3 |
| Magnecomp Corporation | 197 |
3 |
| Rakuten Group, Inc. | 1547 |
3 |
| Resonac Corporation | 2233 |
3 |
| Other owners | 99 |