- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining 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: 25
10-year publication summary
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 | 61 |
4 |
Mincon International Limited | 51 |
2 |
SJM Designs Pty Ltd. | 3 |
2 |
University of Surrey | 208 |
2 |
Koki Holdings Co.,Ltd | 860 |
2 |
Schlumberger Canada Limited | 7154 |
1 |
Schlumberger Technology B.v. | 5075 |
1 |
Schlumberger Holdings Limited | 2867 |
1 |
Atlas Copco Rock Drills AB | 159 |
1 |
China University of Petroleum (Beijing) | 272 |
1 |
Flexidrill Limited | 49 |
1 |
Lewal Drilling Ltd. | 3 |
1 |
NOV Worldwide C.V. | 4 |
1 |
Prad Research and Development Limited | 2696 |
1 |
Services Petroliers Schlumberger | 5633 |
1 |
Daedong Eng Co., Ltd. | 9 |
1 |
Mcmillan, Jaron Lyell | 6 |
1 |
BLK Ventures LLC | 1 |
1 |
Other owners | 0 |