- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 19/20 - Driving; Starting; Stopping; Control thereof
Patent holdings for IPC class G11B 19/20
Total number of patents in this class: 402
10-year publication summary
|
93
|
52
|
23
|
31
|
40
|
24
|
11
|
20
|
26
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nidec Corporation | 2579 |
62 |
| JPMorgan Chase Bank, National Association | 10964 |
52 |
| Seagate Technology LLC | 4228 |
26 |
| Toshiba Corporation | 12017 |
20 |
| Minebea Mitsumi Inc. | 1461 |
20 |
| Toshiba Electronic Devices & Storage Corporation | 1602 |
19 |
| Rohm Co., Ltd. | 5843 |
13 |
| EVault, Inc. | 62 |
10 |
| NTN Corporation | 5008 |
9 |
| Western Digital Technologies, Inc. | 1043 |
9 |
| LG Innotek Co., Ltd. | 6758 |
8 |
| Samsung Electronics Co., Ltd. | 131630 |
5 |
| International Business Machines Corporation | 60644 |
5 |
| Fujitsu Limited | 19265 |
5 |
| Samhongsa Co., Ltd. | 36 |
5 |
| Panasonic Corporation | 20786 |
4 |
| Renesas Electronics Corporation | 6305 |
4 |
| Koninklijke Philips Electronics N.V. | 13133 |
4 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
4 |
| Headway Technologies, Inc. | 715 |
4 |
| Other owners | 114 |