- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 25/06 - Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
Patent holdings for IPC class E21C 25/06
Total number of patents in this class: 94
10-year publication summary
|
6
|
8
|
20
|
13
|
7
|
9
|
8
|
2
|
5
|
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 |
40 |
| Joy MM Delaware, Inc. | 58 |
7 |
| Sandvik Intellectual Property AB | 1634 |
7 |
| Wirtgen GmbH | 507 |
6 |
| Shanxi Tiandi Coal Mining Machinery Co., Ltd. | 14 |
5 |
| Ccteg Taiyuan Research Institute | 5 |
5 |
| China University of Mining and Technology | 1189 |
3 |
| US Synthetic Corporation | 601 |
2 |
| G2 Routers, LLC | 4 |
2 |
| Caterpillar Inc. | 8877 |
1 |
| Asphalt Zipper, Inc. | 19 |
1 |
| Atlas Copco Craelius AB | 17 |
1 |
| BOMAG GmbH | 405 |
1 |
| Coneqtec Corp. | 12 |
1 |
| The Government of The United States of America AS represented by The Secretary of The Department of Health and Human Services | 179 |
1 |
| Roadtec, Inc. | 89 |
1 |
| Vermeer Manufacturing Company | 615 |
1 |
| Zhejiang University | 2619 |
1 |
| Epiroc Aktiebolag | 30 |
1 |
| Epiroc Rock Drills Aktiebolag | 405 |
1 |
| Other owners | 6 |