- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/18 - Mining picks; Holders therefor
Patent holdings for IPC class E21C 35/18
Total number of patents in this class: 351
10-year publication summary
|
33
|
43
|
44
|
33
|
32
|
24
|
14
|
13
|
7
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 507 |
45 |
| The Sollami Company | 51 |
35 |
| Kennametal Inc. | 1380 |
26 |
| Element Six GmbH | 99 |
21 |
| Sandvik Intellectual Property AB | 1634 |
15 |
| Schlumberger Technology Corporation | 9690 |
14 |
| Betek GmbH & Co. KG | 140 |
14 |
| Caterpillar Paving Products Inc. | 628 |
14 |
| Element Six Abrasives S.A. | 148 |
12 |
| Caterpillar Inc. | 8877 |
11 |
| Joy Global Underground Mining LLC | 331 |
11 |
| Novatek IP, LLC | 55 |
10 |
| Element Six (UK) Limited | 178 |
10 |
| US Synthetic Corporation | 601 |
9 |
| ESCO Group LLC | 321 |
8 |
| BOMAG GmbH | 405 |
6 |
| Joy MM Delaware, Inc. | 58 |
6 |
| Vermeer Manufacturing Company | 615 |
6 |
| Carriere Industrial Supply Limited | 9 |
5 |
| Metalogenia Research & Technologies S.L. | 90 |
5 |
| Other owners | 68 |