- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 4/14 - Fluid operated hammers
Patent holdings for IPC class E21B 4/14
Total number of patents in this class: 391
10-year publication summary
|
26
|
17
|
26
|
16
|
24
|
15
|
32
|
22
|
19
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mincon International Limited | 54 |
29 |
| Sandvik Mining and Construction Oy | 836 |
23 |
| Center Rock Inc. | 45 |
15 |
| Sandvik Intellectual Property AB | 1482 |
14 |
| Tracto-Technik GmbH & Co. KG | 170 |
13 |
| Halliburton Energy Services, Inc. | 20911 |
10 |
| Sandvik Mining and Construction Tools AB | 172 |
9 |
| DrillCo Tools S.A. | 11 |
8 |
| Epiroc Drilling Tools Aktiebolag | 82 |
7 |
| Hammergy AS | 6 |
6 |
| Varel Mining and Industrial LLC | 8 |
6 |
| Terelion, LLC | 48 |
6 |
| Caterpillar Inc. | 9579 |
5 |
| Rockmore International, Inc. | 10 |
5 |
| Strada Design Limited | 9 |
5 |
| National Technology & Engineering Solutions of Sandia, LLC | 1902 |
5 |
| Ignis Technologies Pty Ltd | 7 |
5 |
| Epiroc Drilling Tools LLC | 29 |
5 |
| Epiroc Rock Drills Aktiebolag | 520 |
5 |
| Rig Technologies International Pty Ltd | 15 |
5 |
| Other owners | 205 |