- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 47/00 - Machines for obtaining, or the removal of, materials in open-pit mines
Patent holdings for IPC class E21C 47/00
Total number of patents in this class: 109
10-year publication summary
|
12
|
13
|
7
|
9
|
7
|
8
|
2
|
7
|
5
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Surface Mining Inc | 356 |
19 |
| Komatsu Ltd. | 4265 |
16 |
| Wirtgen GmbH | 507 |
11 |
| Hitachi Construction Machinery Co., Ltd. | 2498 |
6 |
| Weatherford Technology Holdings, LLC | 2135 |
4 |
| Technological Resources Pty. Limited | 444 |
4 |
| ThyssenKrupp AG | 3086 |
4 |
| ThyssenKrupp Industrial Solutions AG | 729 |
4 |
| FLSmidth A/S | 923 |
4 |
| Caterpillar Inc. | 8877 |
2 |
| BOMAG GmbH | 405 |
2 |
| Emergent Mining Technologies Pty Ltd | 3 |
2 |
| Mindspark Technologies Pty Ltd | 12 |
2 |
| hummingbird solutions inc | 4 |
2 |
| Hitachi, Ltd. | 16452 |
1 |
| American Equipment & Machine, Inc. | 1 |
1 |
| Bauer Maschinen GmbH | 210 |
1 |
| BHP Billiton Innovation Pty Ltd. | 29 |
1 |
| Caterpillar Paving Products Inc. | 628 |
1 |
| GHD Pty Ltd | 14 |
1 |
| Other owners | 21 |