- 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: 81
10-year publication summary
|
8
|
7
|
9
|
7
|
5
|
4
|
3
|
3
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wirtgen GmbH | 499 |
26 |
| Caterpillar Inc. | 9579 |
6 |
| Element Six GmbH | 105 |
6 |
| Keystone Engineering & Mfg. LLC | 12 |
6 |
| Betek GmbH & Co. KG | 141 |
5 |
| Everpads Co., Ltd. | 22 |
5 |
| Carriere Industrial Supply Limited | 10 |
3 |
| Kennametal Inc. | 1389 |
2 |
| Element Six Abrasives S.A. | 147 |
2 |
| IHC Holland IE B.V. | 265 |
2 |
| Joy Global Underground Mining LLC | 347 |
2 |
| ESCO Group LLC | 314 |
2 |
| Suzhou Wuyuansu Machinery Manufacturing Co., Ltd | 7 |
2 |
| Cqms Pty Ltd | 114 |
1 |
| Joy MM Delaware, Inc. | 56 |
1 |
| Leo Dynamische Investering B.V. | 6 |
1 |
| Metalogenia Research & Technologies S.L. | 103 |
1 |
| US Synthetic Corporation | 622 |
1 |
| Vermeer Manufacturing Company | 638 |
1 |
| Element Six (UK) Limited | 217 |
1 |
| Other owners | 5 |