- Sections
- E - Constructions fixes
- E21D - Puitstunnelsgaleriesvastes chambres souterraines
- E21D 9/04 - Creusement de galeries en terrain de faible consistanceDispositifs à cet effet non prévus ailleurs
Détention brevets de la classe E21D 9/04
Brevets de cette classe: 35
Historique des publications depuis 10 ans
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3
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1
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3
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0
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3
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1
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3
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0
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1
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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Chemical Grouting Co., Ltd. | 4 |
2 |
| Geopier Foundation Company, Inc. | 143 |
2 |
| Nippon Steel Corporation | 6982 |
2 |
| P.I. Engineering, Inc. | 11 |
2 |
| China Railway Siyuan Survey and Design Group Co., Ltd. | 69 |
2 |
| Baro Construction Key-Technology Co., Ltd. | 6 |
1 |
| China Railway Engineering Equipment Group Co., Ltd. | 54 |
1 |
| China University of Mining and Technology | 1316 |
1 |
| GS Engineering & Construction Corp. | 34 |
1 |
| Hyundai Engineering & Construction Co., Ltd. | 23 |
1 |
| Research Institute of Highway Ministry of Transport | 28 |
1 |
| Shandong University | 1160 |
1 |
| Shandong University of Science and Technology | 546 |
1 |
| Shimizu Corporation | 101 |
1 |
| Universidad de Alicante | 238 |
1 |
| Vermeer Manufacturing Company | 675 |
1 |
| Qingdao Jingli Engineering Co,. Ltd. | 5 |
1 |
| CM Partners Co., Ltd. | 2 |
1 |
| Junglim Architecture | 1 |
1 |
| Railway Safety Institute Co. Ltd. | 1 |
1 |
| Autres propriétaires | 10 |