- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/18 - Mining picksHolders therefor
Patent holdings for IPC class E21C 35/18
Total number of patents in this class: 342
10-year publication summary
|
37
|
33
|
31
|
27
|
20
|
15
|
12
|
7
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 498 |
41 |
| The Sollami Company | 54 |
34 |
| Kennametal Inc. | 1389 |
27 |
| Element Six GmbH | 107 |
21 |
| Schlumberger Technology Corporation | 10868 |
14 |
| Betek GmbH & Co. KG | 146 |
14 |
| Caterpillar Paving Products Inc. | 672 |
14 |
| Sandvik Intellectual Property AB | 1476 |
14 |
| Element Six Abrasives S.A. | 147 |
12 |
| Joy Global Underground Mining LLC | 347 |
12 |
| Caterpillar Inc. | 9628 |
11 |
| Novatek IP, LLC | 55 |
10 |
| Element Six (UK) Limited | 218 |
10 |
| US Synthetic Corporation | 617 |
8 |
| ESCO Group LLC | 315 |
7 |
| BOMAG GmbH | 403 |
6 |
| Carriere Industrial Supply Limited | 10 |
6 |
| Joy MM Delaware, Inc. | 56 |
6 |
| Metalogenia Research & Technologies S.L. | 104 |
5 |
| Vermeer Manufacturing Company | 638 |
5 |
| Other owners | 65 |