- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 25/00 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
Patent holdings for IPC class E21C 25/00
Total number of patents in this class: 58
10-year publication summary
|
10
|
2
|
7
|
5
|
4
|
0
|
1
|
3
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 331 |
5 |
| Wirtgen GmbH | 507 |
4 |
| Trimble Navigation Limited | 701 |
3 |
| Sandvik Mining and Construction Oy | 703 |
3 |
| Sany Heavy Equipment Co., Ltd. | 58 |
3 |
| Limited Liability Company "corum Group" | 16 |
3 |
| Kennametal Inc. | 1380 |
2 |
| BOMAG GmbH | 405 |
2 |
| China University of Mining and Technology, Beijing | 66 |
2 |
| Joy MM Delaware, Inc. | 58 |
2 |
| Shenzhen University | 1544 |
2 |
| Plush, Brian | 2 |
2 |
| Critex, LLC, DBA Mr. Manhole | 20 |
2 |
| Caterpillar Inc. | 8877 |
1 |
| Caterpillar Global Mining Europe GmbH | 86 |
1 |
| Raytheon Company | 8535 |
1 |
| ZF Friedrichshafen AG | 6820 |
1 |
| Hilti Aktiengesellschaft | 3227 |
1 |
| Alliance Coal, LLC | 7 |
1 |
| Asphalt Zipper, Inc. | 19 |
1 |
| Other owners | 16 |