- 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 47/16 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the drill string or casing
Patent holdings for IPC class E21B 47/16
Total number of patents in this class: 521
10-year publication summary
|
54
|
34
|
48
|
48
|
25
|
28
|
20
|
19
|
12
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20862 |
114 |
| ExxonMobil Upstream Research Company | 2406 |
40 |
| Schlumberger Technology Corporation | 10673 |
32 |
| Baker Hughes Oilfield Operations, LLC | 2289 |
27 |
| Schlumberger Canada Limited | 7283 |
19 |
| Services Petroliers Schlumberger | 5775 |
18 |
| Baker Hughes Incorporated | 5273 |
17 |
| Schlumberger Technology B.v. | 5164 |
16 |
| Saudi Arabian Oil Company | 12997 |
14 |
| Prad Research and Development Limited | 2693 |
13 |
| Schlumberger Holdings Limited | 2834 |
12 |
| Helmerich & Payne Technologies, LLC | 101 |
11 |
| Baker Hughes Oilfield Operations LLC | 19 |
9 |
| Cold Bore Technology Inc. | 34 |
8 |
| Baker Hughes, a GE Company, LLC | 2113 |
8 |
| Acoustic Data Limited | 16 |
8 |
| Weatherford Technology Holdings, LLC | 2017 |
7 |
| National Oilwell Varco, L.P. | 1665 |
6 |
| EOG Resources, Inc. | 82 |
5 |
| IntelliServ, LLC | 87 |
5 |
| Other owners | 132 |