- 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 1/14 - Percussion drilling with a reciprocating impulse member driven by a rotating mechanism
Patent holdings for IPC class E21B 1/14
Total number of patents in this class: 24
10-year publication summary
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0
|
3
|
0
|
0
|
1
|
4
|
4
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Montabert | 59 |
4 |
| Mincon International Limited | 54 |
2 |
| SJM Designs Pty Ltd. | 3 |
2 |
| University of Surrey | 217 |
2 |
| Koki Holdings Co.,Ltd | 889 |
2 |
| Schlumberger Canada Limited | 7293 |
1 |
| Schlumberger Technology B.v. | 5166 |
1 |
| Schlumberger Holdings Limited | 2831 |
1 |
| Atlas Copco Rock Drills AB | 143 |
1 |
| China University of Petroleum (Beijing) | 281 |
1 |
| Flexidrill Limited | 46 |
1 |
| Lewal Drilling Ltd. | 2 |
1 |
| Prad Research and Development Limited | 2693 |
1 |
| Services Petroliers Schlumberger | 5784 |
1 |
| Daedong Eng Co., Ltd. | 9 |
1 |
| BLK Ventures LLC | 1 |
1 |
| NOV Worldwide C.V. | 2 |
1 |
| Other owners | 0 |