- 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 10/48 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
Patent holdings for IPC class E21B 10/48
Total number of patents in this class: 115
10-year publication summary
|
6
|
3
|
10
|
7
|
5
|
7
|
2
|
4
|
0
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boart Longyear Manufacturing and Distribution Inc. | 110 |
13 |
| Baker Hughes Incorporated | 5248 |
10 |
| Smith International, Inc. | 718 |
8 |
| Longyear TM, Inc. | 100 |
8 |
| Boart Longyear Company | 157 |
7 |
| Baker Hughes Holdings LLC | 3001 |
7 |
| Schlumberger Technology Corporation | 10881 |
6 |
| SF Diamond Co.,Ltd. | 32 |
5 |
| Diamond Products, Limited | 43 |
4 |
| National Oilwell Varco, L.P. | 1686 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2322 |
4 |
| Veracio Ltd. | 63 |
4 |
| Schlumberger Canada Limited | 7366 |
3 |
| Schlumberger Technology B.v. | 5183 |
3 |
| Sandvik Intellectual Property AB | 1475 |
3 |
| Services Petroliers Schlumberger | 5828 |
3 |
| Ulterra Drilling Technologies, L.P. | 124 |
3 |
| Halliburton Energy Services, Inc. | 20946 |
2 |
| Bly IP Inc. | 31 |
2 |
| Comrod AS | 48 |
2 |
| Other owners | 14 |