- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/20 - General features of equipment for removal of chippings, e.g. for loading on conveyor
Patent holdings for IPC class E21C 35/20
Total number of patents in this class: 94
10-year publication summary
|
10
|
13
|
4
|
9
|
12
|
7
|
4
|
5
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 344 |
28 |
| Sandvik Intellectual Property AB | 1392 |
6 |
| Sandvik Mining and Construction G.m.b.H. | 94 |
5 |
| Prairie Machine & Parts Mfg. - Partnership | 40 |
4 |
| Shanxi Tiandi Coal Mining Machinery Co., Ltd. | 27 |
4 |
| Prairie Machine & Parts Mfg. (1978) Ltd. | 7 |
3 |
| Ccteg Taiyuan Research Institute | 9 |
3 |
| Caterpillar Global Mining Europe GmbH | 85 |
2 |
| Hazemag & EPR GmbH | 26 |
2 |
| Joy MM Delaware, Inc. | 56 |
2 |
| MineSense Technologies Ltd. | 63 |
2 |
| Stantec Consulting Ltd. | 23 |
2 |
| Optima Mining Systems Pty Ltd | 3 |
2 |
| Caterpillar Inc. | 10280 |
1 |
| Komatsu Ltd. | 4751 |
1 |
| American Equipment & Machine, Inc. | 1 |
1 |
| Bouygues Travaux Publics | 29 |
1 |
| Caterpillar Global Mining Highwall Miners LLC | 4 |
1 |
| Caterpillar Paving Products Inc. | 730 |
1 |
| China University of Mining and Technology, Beijing | 105 |
1 |
| Other owners | 22 |