- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 23/087 - Magazines; Cassettes for housing webs or filaments having two distinct ends using two different reels or cores
Patent holdings for IPC class G11B 23/087
Total number of patents in this class: 45
10-year publication summary
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0
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0
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1
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1
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5
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3
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8
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6
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4
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
19 |
| JPMorgan Chase Bank, National Association | 10964 |
5 |
| Sony Group Corporation | 10730 |
4 |
| Sony Corporation | 32931 |
3 |
| International Business Machines Corporation | 60644 |
3 |
| Sony Semiconductor Solutions Corporation | 8770 |
3 |
| Hitachi, Ltd. | 16452 |
2 |
| Hitachi Maxell, Ltd. | 451 |
2 |
| Seiko Epson Corporation | 18724 |
1 |
| Brother Industries, Ltd. | 13000 |
1 |
| Western Digital Technologies, Inc. | 1043 |
1 |
| Library of Congress | 7 |
1 |
| Other owners | 0 |