- 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 10/23 - Roller bits characterised by bearing, lubrication or sealing details with drilling fluid supply to the bearings
Patent holdings for IPC class E21B 10/23
Total number of patents in this class: 26
10-year publication summary
|
6
|
4
|
2
|
1
|
1
|
0
|
1
|
0
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1484 |
6 |
| Epiroc Drilling Tools LLC | 29 |
4 |
| Halliburton Energy Services, Inc. | 20862 |
3 |
| Baker Hughes Incorporated | 5273 |
2 |
| Atlas Copco Secoroc LLC | 19 |
2 |
| Varel International Ind., L.P. | 69 |
2 |
| Caterpillar Inc. | 9530 |
1 |
| Aktiebolaget SKF | 2937 |
1 |
| Cardinal Trading Company Pty Ltd | 3 |
1 |
| Deep Casing Tools, Ltd. | 35 |
1 |
| Sandvik Mining and Construction Oy | 823 |
1 |
| Hunting Energy Services, LLC | 34 |
1 |
| Baker Hughes Holdings LLC | 3004 |
1 |
| Other owners | 0 |