- 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 3/06 - Adaptation of rotary draw works to drive rotary tables
Patent holdings for IPC class E21B 3/06
Total number of patents in this class: 12
10-year publication summary
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1
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0
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1
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1
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1
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0
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0
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0
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10662 |
2 |
| Halliburton Energy Services, Inc. | 20835 |
1 |
| Applied Technologies Associates, Inc. | 12 |
1 |
| APS Technology, Inc. | 77 |
1 |
| Atlas Copco Secoroc LLC | 19 |
1 |
| Cameron International Corporation | 1332 |
1 |
| FMC Technologies, Inc. | 599 |
1 |
| Premier Coil Solutions, Inc. | 70 |
1 |
| Varco I/P, Inc. | 61 |
1 |
| West Drilling Products AS | 25 |
1 |
| Epiroc Drilling Tools LLC | 29 |
1 |
| Other owners | 0 |