- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 29/077 - Tunnels at least partially built beneath the water-bed characterised by being made by methods involving disturbance thereof all along the location line, e.g. by cut-and-cover or caisson methods
Patent holdings for IPC class E02D 29/077
Total number of patents in this class: 2
10-year publication summary
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0
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1
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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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0
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| No. 2 Engineering Company Ltd. of CCCC First Harbor Engineering Company Ltd. | 5 |
1 |
| CCCC First Harbor Engineering Co., Ltd. | 46 |
1 |
| Other owners | 0 |