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  • All sections
  • E - Fixed constructions
  • E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
  • E21B 44/02 - Automatic control of the tool feed

Patent holdings for IPC class E21B 44/02

Total number of patents in this class: 912

10-year publication summary

38
34
46
50
59
99
85
72
76
39
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20835
138
Schlumberger Technology Corporation
10662
116
Schlumberger Canada Limited
7273
82
Services Petroliers Schlumberger
5772
68
Landmark Graphics Corporation
1525
49
Schlumberger Technology B.v.
5161
45
Saudi Arabian Oil Company
12947
27
Motive Drilling Technologies, Inc.
102
25
Geoquest Systems B.V.
736
23
Nabors Drilling Technologies USA, Inc.
557
20
Baker Hughes Oilfield Operations, LLC
2288
16
Baker Hughes, a GE Company, LLC
2114
14
Technological Resources Pty. Limited
452
13
National Oilwell Varco, L.P.
1661
12
Sandvik Mining and Construction Oy
819
12
Pason Systems Corp.
78
10
Baker Hughes Incorporated
5277
9
Vermeer Manufacturing Company
635
9
ExxonMobil Upstream Research Company
2407
8
Caterpillar Global Mining Equipment LLC
155
7
Other owners 209

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