- All sections
- G - Physics
- G02B - Optical elements, systems or apparatus
- G02B 9/44 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having four components only arranged + –– + both – components being biconcave
Patent holdings for IPC class G02B 9/44
Total number of patents in this class: 3
10-year publication summary
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0
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0
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0
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0
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0
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1
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1
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0
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Zhejiang Sunny Optics Co., Ltd. | 357 |
2 |
| Largan Precision Co., Ltd. | 1533 |
1 |
| Other owners | 0 |