- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 7/125 - Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
Patent holdings for IPC class G11B 7/125
Total number of patents in this class: 539
10-year publication summary
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4
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4
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5
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3
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2
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5
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3
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2
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2
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1
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pioneer Corporation | 4843 |
74 |
| Panasonic Corporation | 20786 |
66 |
| Koninklijke Philips Electronics N.V. | 13133 |
64 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
60 |
| Konica Minolta Opto, Inc. | 1179 |
26 |
| NEC Corporation | 32703 |
21 |
| Sony Corporation | 32931 |
17 |
| Ricoh Company, Ltd. | 13266 |
15 |
| TDK Corporation | 6306 |
11 |
| Hitachi Consumer Electronics Co., Ltd. | 300 |
10 |
| Hewlett-Packard Development Company, L.P. | 28538 |
9 |
| Sharp Kabushiki Kaisha | 18957 |
9 |
| Sanyo Electric Co., Ltd. | 3926 |
8 |
| Samsung Electronics Co., Ltd. | 131630 |
7 |
| Fujitsu Limited | 19265 |
7 |
| FUJIFILM Corporation | 27102 |
7 |
| Mitsubishi Electric Corporation | 43934 |
7 |
| Alps Electric Co., Ltd. | 851 |
7 |
| Asahi Glass Company, Limited | 2985 |
6 |
| Taiyo Yuden Co., Ltd. | 1809 |
6 |
| Other owners | 102 |