Patent holdings for IPC class E21B 47/085

Total number of patents in this class: 175

10-year publication summary

5
2
6
19
14
28
26
12
17
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.
20684
51
Schlumberger Technology Corporation
10591
14
Saudi Arabian Oil Company
12785
13
Darkvision Technologies Inc.
80
7
Schlumberger Canada Limited
7201
5
Services Petroliers Schlumberger
5739
5
Schlumberger Technology B.v.
5138
4
ConocoPhillips Company
1668
4
Pipelines 2 Data (p2d) Limited
18
4
Prad Research and Development Limited
2695
4
Schlumberger Holdings Limited
2847
3
Baker Hughes Incorporated
5301
3
Aramco Services Company
3894
3
GE Energy Oilfield Technology, Inc.
20
3
Baker Hughes Oilfield Operations, LLC
2251
3
WWT International Coiled Tubing Services, LLC
3
3
Toshiba Corporation
12261
2
CARBO Ceramics Inc.
237
2
China Petroleum & Chemical Corporation
1858
2
Pile Dynamics, Inc.
24
2
Other owners 38