- 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: 99
10-year publication summary
|
10
|
8
|
2
|
7
|
10
|
4
|
6
|
8
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Incorporated | 5038 |
11 |
| Halliburton Energy Services, Inc. | 21230 |
9 |
| Schlumberger Technology Corporation | 11522 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2464 |
6 |
| Saudi Arabian Oil Company | 13948 |
5 |
| Baker Hughes Holdings LLC | 2991 |
4 |
| Optionx Holdings Pty Ltd | 15 |
4 |
| Smith International, Inc. | 700 |
3 |
| National Oilwell DHT, L.P. | 120 |
3 |
| Sandvik Intellectual Property AB | 1415 |
3 |
| Southwest Petroleum University | 508 |
3 |
| Barbco, Inc. | 10 |
2 |
| Chengdu University of Technology | 132 |
2 |
| Sandvik Mining and Construction Oy | 872 |
2 |
| Ulterra Drilling Technologies, L.P. | 131 |
2 |
| Canopus Drilling Solutions Holding B.V. | 6 |
2 |
| Boart Longyear Manufacturing and Distribution Inc. | 128 |
2 |
| Kennametal Inc. | 1362 |
1 |
| Aramco Services Company | 4162 |
1 |
| Cardinal Trading Company Pty Ltd | 3 |
1 |
| Other owners | 27 |