- Sections
- E - Constructions fixes
- E21D - Puitstunnelsgaleriesvastes chambres souterraines
- E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
Détention brevets de la classe E21D 21/00
Brevets de cette classe: 679
Historique des publications depuis 10 ans
|
52
|
80
|
61
|
55
|
52
|
33
|
50
|
47
|
44
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Sandvik Intellectual Property AB | 1398 |
31 |
| China University of Mining and Technology | 1308 |
29 |
| FCI Holdings Delaware, LLC | 100 |
24 |
| NCM Innovations (Pty) Ltd | 35 |
22 |
| Hilti Aktiengesellschaft | 3668 |
20 |
| FCI Holdings Delaware, Inc. | 41 |
20 |
| Sandvik Mining and Construction Australia (production/supply) Pty Ltd. | 62 |
20 |
| Minova International Limited | 94 |
19 |
| Innovative Mining Products (Pty) Ltd, TA New Concept Mining | 32 |
17 |
| Epiroc Drilling Tools Aktiebolag | 92 |
14 |
| Sandvik Mining and Construction Australia (Production Supply) Pty Ltd | 21 |
13 |
| Shandong University of Science and Technology | 545 |
11 |
| DYWIDAG-Systems International Pty Limited | 14 |
10 |
| Rocbolt Technologies (Pty) Ltd. | 10 |
10 |
| Garock Pty Ltd | 9 |
8 |
| Gazmick Pty Ltd | 10 |
8 |
| DSI Underground Australia Pty Limited | 14 |
8 |
| Sandvik Mining and Construction Tools AB | 197 |
7 |
| Epiroc Drilling Tools AB | 7 |
7 |
| 1311854 Ontario Limited | 18 |
6 |
| Autres propriétaires | 375 |