- 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 10/61 - Drill bits characterised by conduits or nozzles for drilling fluids characterised by nozzle structure
Patent holdings for IPC class E21B 10/61
Total number of patents in this class: 97
10-year publication summary
|
8
|
10
|
10
|
10
|
11
|
7
|
11
|
7
|
4
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 12891 |
10 |
| Baker Hughes Oilfield Operations, LLC | 2273 |
10 |
| Halliburton Energy Services, Inc. | 20769 |
7 |
| Baker Hughes Incorporated | 5281 |
6 |
| Schlumberger Technology Corporation | 10641 |
4 |
| National Oilwell DHT, L.P. | 145 |
4 |
| Baker Hughes Holdings LLC | 3006 |
4 |
| Ulterra Drilling Technologies, L.P. | 125 |
3 |
| Black Diamond Oilfield Rentals LLC | 66 |
3 |
| Aramco Services Company | 3921 |
2 |
| Mincon International Limited | 51 |
2 |
| NOV Downhole Eurasia Limited | 45 |
2 |
| Hard Rock Horizontal Directional Drilling Products, Inc. | 6 |
2 |
| Oy Epiroc Drilling Tools AB | 2 |
2 |
| Klear Drilling Technologies LP | 3 |
2 |
| NTS Amega West USA, Inc. | 10 |
2 |
| CFT Technologies Pty Ltd | 5 |
2 |
| Schlumberger Canada Limited | 7244 |
1 |
| Shell Internationale Research Maatschappij B.V. | 3551 |
1 |
| Shell Oil Company | 2141 |
1 |
| Other owners | 27 |