- 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 10/24 - Roller bits - characterised by bearing, lubrication or sealing details - characterised by lubricating details
Patent holdings for IPC class E21B 10/24
Total number of patents in this class: 56
10-year publication summary
|
18
|
8
|
5
|
6
|
5
|
7
|
2
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1542 |
10 |
| Halliburton Energy Services, Inc. | 20438 |
9 |
| Baker Hughes Holdings LLC | 3009 |
5 |
| Baker Hughes Incorporated | 5504 |
4 |
| Smith International, Inc. | 740 |
4 |
| Caterpillar Inc. | 9166 |
3 |
| Varel International Ind., L.P. | 70 |
3 |
| Aktiebolaget SKF | 2839 |
1 |
| Cardinal Trading Company Pty Ltd | 3 |
1 |
| Element Six Limited | 120 |
1 |
| Gearhart United Pty Ltd | 4 |
1 |
| HYDAC Technology GmbH | 227 |
1 |
| M-I L.L.C. | 855 |
1 |
| ND Downhole Technology Ltd. | 1 |
1 |
| PDB Tools, Inc. | 2 |
1 |
| Sandvik Mining and Construction Oy | 787 |
1 |
| SKF Lubrication Systems Germany AG | 2 |
1 |
| Strada Design Limited | 9 |
1 |
| Strada Design Limited | 3 |
1 |
| Tiger 19 Partners, Ltd | 7 |
1 |
| Other owners | 5 |