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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 19/10 - SlipsSpiders

Patent holdings for IPC class E21B 19/10

Total number of patents in this class: 414

10-year publication summary

38
41
45
38
34
31
25
17
17
10
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Frank's International, LLC
238
47
Weatherford Technology Holdings, LLC
2015
34
Itrec B.V.
503
22
Schlumberger Technology Corporation
10662
12
Nabors Drilling Technologies USA, Inc.
557
11
Baker Hughes Incorporated
5277
6
Ensco International Incorporated
54
6
Frank's International, Inc.
63
6
The Wellboss Company, LLC
102
6
Cameron International Corporation
1332
5
FMC Technologies, Inc.
599
5
GE Oil & Gas Pressure Control LP
75
5
National Oilwell Varco, L.P.
1661
5
Saudi Arabian Oil Company
12947
5
Baker Hughes Oilfield Operations, LLC
2288
5
Halliburton Energy Services, Inc.
20835
4
Forum US, Inc.
337
4
Frank's Casing Crew and Rental Tools, Inc.
13
4
Hydril USA Distribution LLC
213
4
Mhwirth AS
129
4
Other owners 214

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