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