- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 35/183 - Mining picksHolders therefor with inserts or layers of wear-resisting material
Patent holdings for IPC class E21C 35/183
Total number of patents in this class: 237
10-year publication summary
|
18
|
18
|
21
|
29
|
19
|
25
|
13
|
11
|
2
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Element Six GmbH | 105 |
30 |
| US Synthetic Corporation | 624 |
20 |
| Kennametal Inc. | 1388 |
19 |
| Element Six Abrasives S.A. | 147 |
19 |
| The Sollami Company | 54 |
19 |
| Sandvik Intellectual Property AB | 1484 |
13 |
| Betek GmbH & Co. KG | 144 |
12 |
| Wirtgen GmbH | 501 |
11 |
| Element Six (UK) Limited | 216 |
11 |
| Schlumberger Technology Corporation | 10691 |
9 |
| Caterpillar Inc. | 9539 |
9 |
| Novatek IP, LLC | 55 |
5 |
| Keystone Engineering & Mfg. LLC | 12 |
5 |
| BOMAG GmbH | 402 |
4 |
| Sandvik Mining and Construction G.m.b.H. | 91 |
4 |
| Metalogenia, S.A. | 53 |
3 |
| Mitsubishi Materials Corporation | 2438 |
3 |
| ESCO Group LLC | 314 |
3 |
| Apergy BMCS Acquisition Corporation | 7 |
3 |
| Carriere Industrial Supply Limited | 10 |
2 |
| Other owners | 33 |