- 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: 1743
10-year publication summary
|
235
|
189
|
142
|
152
|
140
|
121
|
122
|
82
|
75
|
23
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 4228 |
503 |
| JPMorgan Chase Bank, National Association | 10964 |
369 |
| Headway Technologies, Inc. | 715 |
180 |
| Toshiba Corporation | 12017 |
123 |
| International Business Machines Corporation | 60644 |
86 |
| TDK Corporation | 6306 |
83 |
| Toshiba Electronic Devices & Storage Corporation | 1602 |
59 |
| SAE Magnetics (H.K.) Ltd. | 355 |
43 |
| Konica Minolta Opto, Inc. | 1179 |
29 |
| Fujitsu Limited | 19265 |
23 |
| Hitachi, Ltd. | 16452 |
22 |
| Western Digital Technologies, Inc. | 1043 |
22 |
| Seiko Instruments Inc. | 660 |
19 |
| FUJIFILM Corporation | 27102 |
9 |
| Pioneer Corporation | 4843 |
8 |
| Pioneer Micro Technology Corporation | 59 |
7 |
| Konica Minolta, Inc. | 8349 |
6 |
| Sony Corporation | 32931 |
5 |
| Oracle International Corporation | 12313 |
5 |
| Hutchinson Technology Incorporated | 310 |
5 |
| Other owners | 137 |