- 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: 1753
10-year publication summary
|
189
|
142
|
152
|
140
|
121
|
121
|
82
|
76
|
62
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 3979 |
496 |
| JPMorgan Chase Bank, National Association | 8445 |
378 |
| Headway Technologies, Inc. | 699 |
183 |
| Toshiba Corporation | 12104 |
132 |
| International Business Machines Corporation | 60336 |
81 |
| TDK Corporation | 6573 |
77 |
| Toshiba Electronic Devices & Storage Corporation | 1822 |
67 |
| SAE Magnetics (H.K.) Ltd. | 333 |
43 |
| Konica Minolta Opto, Inc. | 1122 |
29 |
| Fujitsu Limited | 18413 |
23 |
| Hitachi, Ltd. | 15274 |
22 |
| Western Digital Technologies, Inc. | 1670 |
22 |
| Seiko Instruments Inc. | 513 |
19 |
| FUJIFILM Corporation | 28873 |
9 |
| Pioneer Corporation | 4592 |
8 |
| Pioneer Micro Technology Corporation | 59 |
7 |
| Konica Minolta, Inc. | 8566 |
6 |
| Sony Corporation | 31486 |
5 |
| Oracle International Corporation | 12628 |
5 |
| Hutchinson Technology Incorporated | 311 |
5 |
| Other owners | 136 |