- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/19 - Means for fixing picks or holders
Patent holdings for IPC class E21C 35/19
Total number of patents in this class: 171
10-year publication summary
|
25
|
25
|
13
|
15
|
13
|
14
|
9
|
2
|
3
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 502 |
24 |
| The Sollami Company | 52 |
20 |
| Kennametal Inc. | 1388 |
9 |
| Betek GmbH & Co. KG | 144 |
8 |
| Novatek IP, LLC | 55 |
8 |
| Joy Global Underground Mining LLC | 347 |
8 |
| Caterpillar Paving Products Inc. | 669 |
7 |
| ESCO Group LLC | 313 |
7 |
| Carriere Industrial Supply Limited | 10 |
6 |
| Element Six GmbH | 105 |
6 |
| Sandvik Intellectual Property AB | 1490 |
6 |
| Schlumberger Technology Corporation | 10652 |
5 |
| BOMAG GmbH | 401 |
5 |
| US Synthetic Corporation | 624 |
5 |
| Everpads Co., Ltd. | 22 |
4 |
| Vermeer Manufacturing Company | 634 |
4 |
| Element Six (UK) Limited | 211 |
4 |
| Caterpillar Global Mining Europe GmbH | 85 |
3 |
| Minnovation Limited | 7 |
3 |
| Bradken Resources Pty Limited | 153 |
2 |
| Other owners | 27 |