- 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 10/48 - 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: 106
10-year publication summary
|
11
|
9
|
3
|
10
|
8
|
5
|
11
|
3
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boart Longyear Company | 262 |
21 |
| Longyear TM, Inc. | 139 |
11 |
| Baker Hughes Incorporated | 5689 |
10 |
| Smith International, Inc. | 761 |
8 |
| Baker Hughes Holdings LLC | 3060 |
7 |
| Diamond Products, Limited | 44 |
4 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
4 |
| Schlumberger Technology Corporation | 9690 |
3 |
| National Oilwell Varco, L.P. | 1604 |
3 |
| Sandvik Intellectual Property AB | 1634 |
3 |
| SF Diamond Co.,Ltd. | 21 |
3 |
| Ulterra Drilling Technologies, L.P. | 124 |
3 |
| Veracio Ltd. | 40 |
3 |
| Halliburton Energy Services, Inc. | 20165 |
2 |
| Bly IP Inc. | 35 |
2 |
| Comrod AS | 47 |
2 |
| Groupe Fordia Inc. | 21 |
2 |
| S-421 Holdings Ltd. | 2 |
2 |
| Skeels, Todd | 2 |
2 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
1 |
| Other owners | 10 |