- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 5/73 - Base layers
Patent holdings for IPC class G11B 5/73
Total number of patents in this class: 927
10-year publication summary
|
52
|
61
|
52
|
50
|
64
|
90
|
63
|
71
|
65
|
50
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoya Corporation | 2756 |
192 |
| FUJIFILM Corporation | 29702 |
82 |
| JPMorgan Chase Bank, National Association | 8592 |
75 |
| The Furukawa Electric Co., Ltd. | 3702 |
58 |
| UACJ Corporation | 705 |
57 |
| Sony Group Corporation | 14299 |
49 |
| Resonac Hard Disk Corporation | 186 |
48 |
| Sony Corporation | 30910 |
45 |
| Seagate Technology LLC | 3971 |
41 |
| Konica Minolta Opto, Inc. | 1052 |
31 |
| Fuji Electric Co., Ltd. | 5214 |
18 |
| Western Digital Technologies, Inc. | 1756 |
17 |
| Agc, Inc. | 4944 |
17 |
| Asahi Glass Company, Limited | 2758 |
15 |
| Nippon Electric Glass Co., Ltd. | 2471 |
12 |
| International Business Machines Corporation | 61596 |
11 |
| Konica Minolta Advanced Layers, Inc. | 217 |
11 |
| Hoya Glass Disk Vietnam II Ltd. | 13 |
10 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2879 |
9 |
| Nippon Sheet Glass Company, Limited | 981 |
9 |
| Other owners | 120 |