- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 41/00 - Methods of underground or surface miningLayouts therefor
Patent holdings for IPC class E21C 41/00
Total number of patents in this class: 130
10-year publication summary
|
10
|
13
|
12
|
4
|
6
|
6
|
6
|
8
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Technological Resources Pty. Limited | 446 |
20 |
| Sandvik Mining and Construction Oy | 863 |
5 |
| Wirtgen GmbH | 515 |
5 |
| Epiroc Rock Drills Aktiebolag | 606 |
5 |
| Opti-minez Pty Ltd | 7 |
4 |
| Caterpillar Inc. | 10025 |
3 |
| Komatsu Ltd. | 4658 |
3 |
| Joy MM Delaware, Inc. | 56 |
3 |
| The University of Melbourne | 558 |
3 |
| Joy Global Underground Mining LLC | 349 |
3 |
| Active Minerals International, LLC | 51 |
2 |
| Dyno Nobel Inc. | 169 |
2 |
| Enaex Servicios S.A. | 20 |
2 |
| Her Majesty The Queen in Right of Canada AS represented by The Minister of Natural Resources Canada | 52 |
2 |
| Mindspark Technologies Pty Ltd | 12 |
2 |
| Modular Mining Systems, Inc. | 90 |
2 |
| Pinnacle Potash International, Ltd., General Partner, Sabine International, Inc., a Texas corporation | 5 |
2 |
| Teck Resources Limited | 53 |
2 |
| Tenax S.p.A. | 43 |
2 |
| Underground Extraction Technologies Pty Ltd | 17 |
2 |
| Other owners | 56 |