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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 10/18 - Roller bits characterised by conduits or nozzles for drilling fluids

Patent holdings for IPC class E21B 10/18

Total number of patents in this class: 96

10-year publication summary

15
10
8
2
7
10
4
6
6
2
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Baker Hughes Incorporated
5277
11
Halliburton Energy Services, Inc.
20835
9
Baker Hughes Oilfield Operations, LLC
2288
6
Schlumberger Technology Corporation
10662
5
Saudi Arabian Oil Company
12947
5
Smith International, Inc.
720
4
Baker Hughes Holdings LLC
3005
4
Optionx Holdings Pty Ltd
11
4
National Oilwell DHT, L.P.
131
3
Sandvik Intellectual Property AB
1484
3
Southwest Petroleum University
465
3
Barbco, Inc.
13
2
Chengdu University of Technology
119
2
Mitsubishi Materials Corporation
2437
2
Ulterra Drilling Technologies, L.P.
125
2
Boart Longyear Manufacturing and Distribution Inc.
112
2
Kennametal Inc.
1384
1
Aramco Services Company
3929
1
Cardinal Trading Company Pty Ltd
3
1
China University of Petroleum (East China)
370
1
Other owners 25

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