Détention brevets de la classe E21D 9/14

Brevets de cette classe: 85

Historique des publications depuis 10 ans

2
4
6
2
9
7
7
9
5
8
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Changjiang Survey Planning Design and Research Co., Ltd.
12
4
Electricwaze LLC
13
4
Komatsu Ltd.
4740
3
Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
5
3
China University of Mining and Technology
1313
2
Electricite de France
755
2
Jack Kennedy Metal Products & Buildings, Inc.
32
2
Korea Railroad Research Institute
185
2
P.I. Engineering, Inc.
11
2
Shandong University
1157
2
China Railway 14th Bureau Group Co., Ltd.
14
2
China Railway No.5 Engineering Group Co., Ltd.
18
2
Acciona Infraestructuras, S.A.
13
1
China University of Mining and Technology, Beijing
105
1
ESPROS Photonics AG
30
1
FCC Construccion S.A.
7
1
Hazemag & EPR GmbH
26
1
Line-x LLC
45
1
Metro de Madrid, S.A.
9
1
Ocean University of China
213
1
Autres propriétaires 47