- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 23/03 - Containers for flat record carriers
Patent holdings for IPC class G11B 23/03
Total number of patents in this class: 159
10-year publication summary
|
3
|
8
|
9
|
15
|
13
|
10
|
6
|
4
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 31541 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
15 |
| Panasonic Corporation | 20315 |
13 |
| International Business Machines Corporation | 60129 |
8 |
| Hoya Corporation | 2745 |
7 |
| Quantum Corporation | 308 |
5 |
| Sony Semiconductor Solutions Corporation | 9714 |
4 |
| FUJIFILM Corporation | 28805 |
3 |
| Seagate Technology LLC | 3929 |
3 |
| TDK Corporation | 6539 |
3 |
| MeadWestvaco Corporation | 356 |
3 |
| Hitachi Consumer Electronics Co., Ltd. | 285 |
2 |
| Oracle America, Inc. | 3434 |
2 |
| Nidec Corporation | 2601 |
2 |
| Trade Guys International Pty Ltd. | 2 |
2 |
| Innovative Polymers Pte. Ltd. | 6 |
2 |
| Sony Group Corporation | 12664 |
2 |
| Samsung Electronics Co., Ltd. | 139001 |
1 |
| 3m Innovative Properties Company | 17957 |
1 |
| Sony Computer Entertainment Inc. | 1047 |
1 |
| Other owners | 61 |