Patent holdings for IPC class E21B 33/037

Total number of patents in this class: 125

10-year publication summary

18
13
13
17
9
15
3
4
7
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Saudi Arabian Oil Company
12423
9
Cameron International Corporation
1322
6
Statoil Petroleum AS
541
6
Aker Subsea AS
130
5
FMC Kongsberg Subsea AS
251
5
OneSubsea IP UK Limited
399
5
Equinor Energy AS
488
5
Schlumberger Technology Corporation
10241
3
Schlumberger Canada Limited
7147
3
Siemens AG
24573
3
Aker Solutions AS
234
3
ConocoPhillips Company
1677
3
Fluor Technologies Corporation
385
3
FMC Technologies, Inc.
586
3
Interwell Norway AS
58
3
Neodrill AS
39
3
Baker Hughes, a GE Company, LLC
2138
3
Schlumberger Technology B.v.
5068
2
Capwell AS
3
2
Saipem S.A.
227
2
Other owners 48