- 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 |