- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 5/255 - Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to, the recording medium; Pole pieces; Gap features comprising means for protection against wear
Patent holdings for IPC class G11B 5/255
Total number of patents in this class: 77
10-year publication summary
|
10
|
18
|
10
|
12
|
11
|
3
|
6
|
6
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 60644 |
35 |
| JPMorgan Chase Bank, National Association | 10964 |
13 |
| Seagate Technology LLC | 4228 |
7 |
| Oracle International Corporation | 12313 |
5 |
| Toshiba Corporation | 12017 |
3 |
| Quantum Corporation | 332 |
3 |
| SAE Magnetics (H.K.) Ltd. | 355 |
2 |
| Toshiba Electronic Devices & Storage Corporation | 1602 |
2 |
| ddm hopt + schuler GmbH & Co. KG | 15 |
1 |
| GFD Gesellschaft für Diamantprodukte mbH | 24 |
1 |
| MidCap Financial Trust | 147 |
1 |
| National University of Singapore | 2228 |
1 |
| NHK Spring Co., Ltd. | 1657 |
1 |
| Shenzhen Tsimec Co., Ltd. | 1 |
1 |
| Seagate Technologv LLC | 1 |
1 |
| Other owners | 0 |