Patent holdings for IPC class E21B 4/12

Total number of patents in this class: 18

10-year publication summary

2
9
3
0
0
2
0
0
2
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20862
6
Welltec AS
297
2
Schlumberger Technology Corporation
10673
1
Panasonic Intellectual Property Management Co., Ltd.
31221
1
Aramco Services Company
3936
1
Robertson Intellectual Properties, LLC
90
1
Aramco Overseas Company B.V.
20
1
Geoprober Ltd.
7
1
Baker Hughes, a GE Company, LLC
2113
1
Baker Hughes, LLC
12
1
Zhaw - Zurcher Hochschule fur angewandte Wissenschaften
13
1
Baker Hughes Holdings LLC
3004
1
Other owners 0