Patent holdings for IPC class E21B 33/126

Total number of patents in this class: 217

10-year publication summary

22
15
10
13
11
17
19
14
9
3
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20419
38
Schlumberger Technology Corporation
10241
14
Rubberatkins Limited
32
13
Weatherford Technology Holdings, LLC
2105
9
Baker Hughes Oilfield Operations, LLC
2120
9
Baker Hughes Holdings LLC
3009
7
Schlumberger Canada Limited
7147
6
Baker Hughes Incorporated
5508
6
Saudi Arabian Oil Company
12423
6
Schlumberger Technology B.v.
5068
5
Services Petroliers Schlumberger
5626
5
Isolation Equipment Services Inc.
22
3
Oil States Energy Services, L.L.C.
75
3
Pilot Drilling Control Limited
11
3
Saltel Industries
64
3
Weatherford U.K. Limited
73
3
Welltec AS
297
3
ExxonMobil Upstream Research Company
2454
2
HydraWell Inc.
6
2
Packers Plus Energy Services Inc.
123
2
Other owners 75