- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 5/31 - Structure or manufacture of heads, e.g. inductive using thin film
Patent holdings for IPC class G11B 5/31
Total number of patents in this class: 1813
10-year publication summary
|
142
|
152
|
140
|
120
|
120
|
82
|
77
|
67
|
47
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 3985 |
507 |
| JPMorgan Chase Bank, National Association | 8630 |
380 |
| Headway Technologies, Inc. | 685 |
200 |
| Toshiba Corporation | 12578 |
141 |
| International Business Machines Corporation | 62002 |
83 |
| TDK Corporation | 6784 |
75 |
| Toshiba Electronic Devices & Storage Corporation | 2182 |
75 |
| SAE Magnetics (H.K.) Ltd. | 319 |
43 |
| Western Digital Technologies, Inc. | 1801 |
33 |
| Konica Minolta Opto, Inc. | 1001 |
29 |
| Hitachi, Ltd. | 15835 |
22 |
| Fujitsu Limited | 17288 |
20 |
| Seiko Instruments Inc. | 460 |
19 |
| FUJIFILM Corporation | 30106 |
14 |
| Pioneer Corporation | 4005 |
8 |
| Pioneer Micro Technology Corporation | 58 |
7 |
| JPMorgan Chase Bank, N.A., AS The Agent | 2657 |
7 |
| Konica Minolta, Inc. | 8983 |
6 |
| Sony Corporation | 30568 |
5 |
| Oracle International Corporation | 13291 |
5 |
| Other owners | 134 |