- 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 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
Patent holdings for IPC class E21B 23/03
Total number of patents in this class: 238
10-year publication summary
|
14
|
15
|
14
|
16
|
20
|
15
|
23
|
12
|
23
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21103 |
35 |
| Baker Hughes Oilfield Operations, LLC | 2395 |
21 |
| Schlumberger Technology Corporation | 11089 |
14 |
| Petroleum Technology Company AS | 98 |
12 |
| Saudi Arabian Oil Company | 13716 |
12 |
| Cameron International Corporation | 1355 |
9 |
| Weatherford Technology Holdings, LLC | 2036 |
8 |
| Evolution Engineering Inc. | 300 |
5 |
| Impact Selector International, LLC | 112 |
5 |
| Welltec AS | 300 |
5 |
| Baker Hughes, a GE Company, LLC | 2103 |
4 |
| Baker Hughes Holdings LLC | 3000 |
4 |
| Schlumberger Canada Limited | 7446 |
3 |
| Schlumberger Technology B.v. | 5224 |
3 |
| Baker Hughes Incorporated | 5168 |
3 |
| Aarbakke Innovation A.S. | 30 |
3 |
| Aker Well Service AS | 20 |
3 |
| Gulfstream Services, Inc. | 58 |
3 |
| Hunting Titan, Inc. | 244 |
3 |
| Services Petroliers Schlumberger | 5888 |
3 |
| Other owners | 80 |