- 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 10/55 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
Patent holdings for IPC class E21B 10/55
Total number of patents in this class: 446
10-year publication summary
|
53
|
47
|
53
|
60
|
40
|
24
|
14
|
15
|
17
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Holdings LLC | 3002 |
85 |
| US Synthetic Corporation | 614 |
59 |
| Halliburton Energy Services, Inc. | 21078 |
50 |
| Smith International, Inc. | 714 |
46 |
| Schlumberger Technology Corporation | 11054 |
32 |
| Ulterra Drilling Technologies, L.P. | 129 |
20 |
| Baker Hughes Incorporated | 5175 |
17 |
| Saudi Arabian Oil Company | 13656 |
11 |
| Baker Hughes, a GE Company, LLC | 2106 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2390 |
10 |
| National Oilwell DHT, L.P. | 122 |
8 |
| National Oilwell Varco, L.P. | 1699 |
7 |
| CNPC USA Corp. | 169 |
5 |
| Diamond Innovations, Inc. | 236 |
5 |
| Varel Europe S.A.S. | 30 |
5 |
| Element Six (UK) Limited | 221 |
5 |
| Varel International Ind., LLC | 44 |
5 |
| NOV Downhole Eurasia Limited | 46 |
3 |
| Shear Bits, Inc. | 10 |
3 |
| Aramco Services Company | 4095 |
2 |
| Other owners | 57 |