- 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 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
Patent holdings for IPC class E21B 27/00
Total number of patents in this class: 367
10-year publication summary
|
25
|
36
|
23
|
18
|
31
|
32
|
14
|
25
|
23
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21305 |
53 |
| Saudi Arabian Oil Company | 14275 |
39 |
| Schlumberger Technology Corporation | 11839 |
20 |
| Aramco Services Company | 4194 |
13 |
| Altus Intervention (technologies) AS | 54 |
13 |
| Baker Hughes Holdings LLC | 3023 |
13 |
| Typhon Technology Solutions (U.S.), LLC | 105 |
11 |
| Bauer Maschinen GmbH | 246 |
9 |
| Baker Hughes Incorporated | 4922 |
7 |
| Fallback LLC | 9 |
7 |
| Forum US, Inc. | 347 |
6 |
| Welltec AS | 318 |
6 |
| Weatherford Technology Holdings, LLC | 2160 |
5 |
| Altus Intervention AS | 18 |
4 |
| Interwell Technology AS | 32 |
4 |
| Katch Kan Holdings Ltd. | 54 |
4 |
| Qinterra Technologies AS | 34 |
4 |
| Wellbore Energy Solutions, LLC | 7 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2534 |
4 |
| Baker Hughes, a GE Company, LLC | 2051 |
4 |
| Other owners | 137 |