- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 7/004 - Recording, reproducing or erasing methodsRead, write or erase circuits therefor
Patent holdings for IPC class G11B 7/004
Total number of patents in this class: 243
10-year publication summary
|
2
|
5
|
4
|
3
|
2
|
2
|
7
|
7
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pioneer Corporation | 4406 |
35 |
| Panasonic Corporation | 20180 |
34 |
| Panasonic Intellectual Property Management Co., Ltd. | 30903 |
19 |
| Matsushita Electric Industrial Co., Ltd. | 1871 |
14 |
| Hitachi Consumer Electronics Co., Ltd. | 285 |
14 |
| Sony Corporation | 31157 |
11 |
| Sharp Kabushiki Kaisha | 18813 |
10 |
| Samsung Electronics Co., Ltd. | 143812 |
9 |
| LG Electronics Inc. | 72357 |
7 |
| Pioneer Digital Design and Manufacturing Corporation | 29 |
7 |
| NEC Corporation | 35291 |
6 |
| Taiyo Yuden Co., Ltd. | 1917 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6274 |
5 |
| FUJIFILM Corporation | 29208 |
4 |
| Mitsubishi Electric Corporation | 45752 |
4 |
| TDK Corporation | 6667 |
3 |
| JVC Kenwood Corporation | 2984 |
3 |
| Case Western Reserve University | 1794 |
3 |
| Hewlett-Packard Development Company, L.P. | 25972 |
2 |
| Mitsubishi Kagaku Media Co., Ltd. | 35 |
2 |
| Other owners | 45 |