Patent holdings for IPC class E21B 47/117

Total number of patents in this class: 158

10-year publication summary

3
11
15
5
3
12
23
22
37
28
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
19653
26
Saudi Arabian Oil Company
9448
24
Weatherford Technology Holdings, LLC
2505
8
Schlumberger Technology Corporation
9139
6
Aramco Services Company
3207
6
ConocoPhillips Company
1577
4
Equinor Energy AS
394
4
Vertice Oil Tools Inc.
44
4
Baker Hughes Incorporated
7120
3
Landmark Graphics Corporation
1544
3
Engip LLC
13
3
Hifi Engineering Inc.
109
3
Ingu Solutions Inc.
26
3
Seismos Inc.
37
3
Exedra AS
4
3
Aker Solutions AS
192
2
Expro North Sea Limited
195
2
FMC Technologies, Inc.
590
2
Interwell Norway AS
34
2
Petroleo Brasileiro S.A. - Petrobras
553
2
Other owners 45