- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 7/004 - Recording, reproducing or erasing methods; Read, write or erase circuits therefor
Patent holdings for IPC class G11B 7/004
Total number of patents in this class: 312
10-year publication summary
|
8
|
2
|
5
|
4
|
3
|
2
|
2
|
7
|
7
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pioneer Corporation | 4843 |
42 |
| Panasonic Corporation | 20786 |
36 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
36 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
19 |
| Sony Corporation | 32931 |
16 |
| Hitachi Consumer Electronics Co., Ltd. | 300 |
15 |
| Samsung Electronics Co., Ltd. | 131630 |
13 |
| LG Electronics Inc. | 69257 |
13 |
| Sharp Kabushiki Kaisha | 18957 |
10 |
| NEC Corporation | 32703 |
8 |
| Pioneer Digital Design and Manufacturing Corporation | 29 |
7 |
| Taiyo Yuden Co., Ltd. | 1809 |
6 |
| Ricoh Company, Ltd. | 13266 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
5 |
| FUJIFILM Corporation | 27102 |
4 |
| Koninklijke Philips Electronics N.V. | 13133 |
4 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| TDK Corporation | 6306 |
3 |
| JVC Kenwood Corporation | 2774 |
3 |
| Case Western Reserve University | 1727 |
3 |
| Other owners | 60 |