- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 29/02 - Propulsion of machines for slitting or completely freeing the mineral from the seam by means on the machine exerting a thrust against fixed supports
Patent holdings for IPC class E21C 29/02
Total number of patents in this class: 24
10-year publication summary
|
1
|
4
|
0
|
0
|
2
|
0
|
0
|
1
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9540 |
5 |
| Joy Global Underground Mining LLC | 348 |
5 |
| Bucyrus Europe GmbH | 32 |
3 |
| The Charles Machine Works, Inc. | 406 |
1 |
| Famur Institute Sp. z.o.o. | 1 |
1 |
| Herrenknecht AG | 203 |
1 |
| HeNan Polytechnic University | 98 |
1 |
| Famur S.A. | 5 |
1 |
| Bucyrus DBT Europe GmbH | 10 |
1 |
| Sany Heavy Equipment Co., Ltd. | 77 |
1 |
| Limited Liability Company "corum Group" | 16 |
1 |
| Sany Heavy Integrated Coal Minging Equipment Co., Ltd | 12 |
1 |
| Yimin Zhang | 2 |
1 |
| NOVUS Hi-Tech Robotic Systemz Private Ltd | 26 |
1 |
| Other owners | 0 |