- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/193 - Means for fixing picks or holders using bolts as main fixing elements
Patent holdings for IPC class E21C 35/193
Total number of patents in this class: 75
10-year publication summary
|
11
|
8
|
8
|
9
|
9
|
5
|
4
|
4
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 507 |
24 |
| Element Six GmbH | 99 |
6 |
| Caterpillar Inc. | 8877 |
5 |
| Betek GmbH & Co. KG | 140 |
5 |
| Everpads Co., Ltd. | 20 |
5 |
| Carriere Industrial Supply Limited | 9 |
3 |
| Joy Global Underground Mining LLC | 331 |
3 |
| Kennametal Inc. | 1380 |
2 |
| Element Six Abrasives S.A. | 148 |
2 |
| IHC Holland IE B.V. | 277 |
2 |
| Joy MM Delaware, Inc. | 58 |
2 |
| US Synthetic Corporation | 601 |
2 |
| ESCO Group LLC | 321 |
2 |
| Suzhou Wuyuansu Machinery Manufacturing Co., Ltd | 6 |
2 |
| MMD Group Limited | 14 |
2 |
| Cqms Pty Ltd | 111 |
1 |
| Leo Dynamische Investering B.V. | 7 |
1 |
| Metalogenia Research & Technologies S.L. | 90 |
1 |
| Vermeer Manufacturing Company | 615 |
1 |
| Element Six (UK) Limited | 178 |
1 |
| Other owners | 3 |