- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining 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: 95
10-year publication summary
|
15
|
10
|
8
|
2
|
7
|
10
|
4
|
6
|
6
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Incorporated | 5514 |
11 |
| Halliburton Energy Services, Inc. | 20403 |
8 |
| Schlumberger Technology Corporation | 10217 |
5 |
| Saudi Arabian Oil Company | 12390 |
5 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
5 |
| Smith International, Inc. | 741 |
4 |
| Baker Hughes Holdings LLC | 3013 |
4 |
| Optionx Holdings Pty Ltd | 8 |
4 |
| National Oilwell DHT, L.P. | 148 |
3 |
| Sandvik Intellectual Property AB | 1546 |
3 |
| Southwest Petroleum University | 442 |
3 |
| Ulterra Drilling Technologies, L.P. | 127 |
3 |
| Barbco, Inc. | 14 |
2 |
| Chengdu University of Technology | 103 |
2 |
| Mitsubishi Materials Corporation | 2405 |
2 |
| Boart Longyear Company | 269 |
2 |
| Kennametal Inc. | 1384 |
1 |
| Aramco Services Company | 3735 |
1 |
| Cardinal Trading Company Pty Ltd | 3 |
1 |
| China University of Petroleum (East China) | 343 |
1 |
| Other owners | 25 |