- 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 47/085 - Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
Patent holdings for IPC class E21B 47/085
Total number of patents in this class: 175
10-year publication summary
5
|
2
|
6
|
19
|
14
|
28
|
26
|
12
|
17
|
3
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Halliburton Energy Services, Inc. | 20684 |
51 |
Schlumberger Technology Corporation | 10591 |
14 |
Saudi Arabian Oil Company | 12785 |
13 |
Darkvision Technologies Inc. | 80 |
7 |
Schlumberger Canada Limited | 7201 |
5 |
Services Petroliers Schlumberger | 5739 |
5 |
Schlumberger Technology B.v. | 5138 |
4 |
ConocoPhillips Company | 1668 |
4 |
Pipelines 2 Data (p2d) Limited | 18 |
4 |
Prad Research and Development Limited | 2695 |
4 |
Schlumberger Holdings Limited | 2847 |
3 |
Baker Hughes Incorporated | 5301 |
3 |
Aramco Services Company | 3894 |
3 |
GE Energy Oilfield Technology, Inc. | 20 |
3 |
Baker Hughes Oilfield Operations, LLC | 2251 |
3 |
WWT International Coiled Tubing Services, LLC | 3 |
3 |
Toshiba Corporation | 12261 |
2 |
CARBO Ceramics Inc. | 237 |
2 |
China Petroleum & Chemical Corporation | 1858 |
2 |
Pile Dynamics, Inc. | 24 |
2 |
Other owners | 38 |