- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 21/02 - Driving or moving of heads
Patent holdings for IPC class G11B 21/02
Total number of patents in this class: 614
10-year publication summary
|
48
|
22
|
29
|
7
|
9
|
8
|
7
|
7
|
7
|
2
|
| 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 | 8565 |
150 |
| Seagate Technology LLC | 3969 |
88 |
| Toshiba Corporation | 12367 |
58 |
| Marvell Asia PTE, Ltd. | 6530 |
34 |
| Cavium International | 5007 |
34 |
| Avago Technologies International Sales Pte. Limited | 8748 |
32 |
| International Business Machines Corporation | 61305 |
13 |
| Texas Instruments Incorporated | 19443 |
11 |
| NHK Spring Co., Ltd. | 1870 |
10 |
| Pioneer Corporation | 4340 |
9 |
| Western Digital Technologies, Inc. | 1755 |
8 |
| FUJIFILM Corporation | 29437 |
7 |
| Hewlett Packard Enterprise Development LP | 10727 |
7 |
| Samsung Electronics Co., Ltd. | 146811 |
6 |
| SAE Magnetics (H.K.) Ltd. | 328 |
6 |
| LSI Corporation | 158 |
5 |
| TDK Corporation | 6761 |
5 |
| Toshiba Electronic Devices & Storage Corporation | 1982 |
5 |
| Alter Domus (US) LLC, AS Agent for The Secured Parties | 210 |
4 |
| Apple Inc. | 55174 |
3 |
| Other owners | 119 |