- 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 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: 159
10-year publication summary
|
0
|
5
|
2
|
6
|
18
|
14
|
26
|
26
|
12
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
48 |
| Schlumberger Technology Corporation | 9690 |
13 |
| Saudi Arabian Oil Company | 11322 |
9 |
| Darkvision Technologies Inc. | 61 |
7 |
| Schlumberger Canada Limited | 6913 |
5 |
| Services Petroliers Schlumberger | 5426 |
5 |
| Schlumberger Technology B.v. | 4951 |
4 |
| Prad Research and Development Limited | 2696 |
4 |
| Schlumberger Holdings Limited | 2947 |
3 |
| Baker Hughes Incorporated | 5689 |
3 |
| Aramco Services Company | 3504 |
3 |
| ConocoPhillips Company | 1657 |
3 |
| GE Energy Oilfield Technology, Inc. | 20 |
3 |
| Pipelines 2 Data (p2d) Limited | 17 |
3 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
3 |
| CARBO Ceramics Inc. | 248 |
2 |
| China Petroleum & Chemical Corporation | 1623 |
2 |
| Pile Dynamics, Inc. | 26 |
2 |
| Proforma Engineering Limited | 4 |
2 |
| Reeves Wireline Technologies Limited | 61 |
2 |
| Other owners | 33 |