- 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: 174
10-year publication summary
|
19
|
25
|
25
|
13
|
15
|
13
|
14
|
7
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 507 |
24 |
| The Sollami Company | 51 |
22 |
| Kennametal Inc. | 1380 |
10 |
| Betek GmbH & Co. KG | 140 |
8 |
| Novatek IP, LLC | 55 |
8 |
| Joy Global Underground Mining LLC | 331 |
8 |
| ESCO Group LLC | 321 |
8 |
| Caterpillar Paving Products Inc. | 628 |
7 |
| Carriere Industrial Supply Limited | 9 |
6 |
| Element Six GmbH | 99 |
6 |
| Sandvik Intellectual Property AB | 1634 |
6 |
| US Synthetic Corporation | 601 |
6 |
| BOMAG GmbH | 405 |
5 |
| Schlumberger Technology Corporation | 9690 |
4 |
| Everpads Co., Ltd. | 20 |
4 |
| Vermeer Manufacturing Company | 615 |
4 |
| Element Six (UK) Limited | 178 |
4 |
| Caterpillar Global Mining Europe GmbH | 86 |
3 |
| Joy MM Delaware, Inc. | 58 |
3 |
| Minnovation Limited | 8 |
3 |
| Other owners | 25 |