- 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 47/18 - 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 well fluid
Patent holdings for IPC class E21B 47/18
Total number of patents in this class: 1240
10-year publication summary
|
138
|
121
|
121
|
91
|
66
|
75
|
72
|
57
|
42
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
326 |
| Schlumberger Technology Corporation | 10914 |
120 |
| Evolution Engineering Inc. | 301 |
93 |
| Baker Hughes, a GE Company, LLC | 2109 |
36 |
| Schlumberger Canada Limited | 7373 |
35 |
| Baker Hughes Incorporated | 5243 |
35 |
| Baker Hughes Oilfield Operations, LLC | 2334 |
31 |
| Saudi Arabian Oil Company | 13428 |
30 |
| Services Petroliers Schlumberger | 5835 |
29 |
| Schlumberger Technology B.v. | 5189 |
24 |
| Unanimous A.I., Inc. | 45 |
16 |
| Halliburton Manufacturing and Services Limited | 58 |
14 |
| Erdos Miller, Inc. | 36 |
14 |
| Scientific Drilling International, Inc. | 168 |
13 |
| Baker Hughes Holdings LLC | 2999 |
12 |
| Bench Tree Group, LLC | 63 |
11 |
| ExxonMobil Upstream Research Company | 2390 |
11 |
| Nabors Drilling Technologies USA, Inc. | 562 |
11 |
| Weatherford Technology Holdings, LLC | 2033 |
10 |
| Rime Downhole Technologies, LLC | 27 |
10 |
| Other owners | 359 |