- 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: 344
10-year publication summary
|
30
|
25
|
36
|
23
|
18
|
31
|
32
|
11
|
23
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20730 |
45 |
| Saudi Arabian Oil Company | 12833 |
32 |
| Schlumberger Technology Corporation | 10608 |
15 |
| Altus Intervention (technologies) AS | 65 |
15 |
| Baker Hughes Holdings LLC | 3011 |
15 |
| Baker Hughes Incorporated | 5295 |
12 |
| Aramco Services Company | 3904 |
12 |
| Typhon Technology Solutions (U.S.), LLC | 93 |
11 |
| Bauer Maschinen GmbH | 217 |
9 |
| Forum US, Inc. | 331 |
6 |
| Fallback LLC | 8 |
6 |
| Weatherford Technology Holdings, LLC | 2011 |
5 |
| Altus Intervention AS | 19 |
5 |
| Interwell Technology AS | 32 |
4 |
| Katch Kan Holdings Ltd. | 55 |
4 |
| Qinterra Technologies AS | 38 |
4 |
| Wellbore Energy Solutions, LLC | 7 |
4 |
| Welltec AS | 297 |
4 |
| Baker Hughes, a GE Company, LLC | 2115 |
4 |
| Master Sinkers (Pty) Ltd | 7 |
4 |
| Other owners | 128 |