- 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 10/44 - Bits with helical conveying portion, e.g. screw type bitsAugers with leading portion or with detachable parts
Patent holdings for IPC class E21B 10/44
Total number of patents in this class: 187
10-year publication summary
|
24
|
23
|
22
|
19
|
25
|
17
|
15
|
17
|
7
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hilti Aktiengesellschaft | 3491 |
14 |
| Halliburton Energy Services, Inc. | 20862 |
13 |
| Robert Bosch GmbH | 42632 |
9 |
| Hubbell Incorporated | 3253 |
6 |
| Bauer Maschinen GmbH | 218 |
6 |
| Smith International, Inc. | 719 |
5 |
| Black & Decker, Inc. | 2407 |
4 |
| Soilmec S.p.A. | 75 |
4 |
| Richard Goren Enterprises, LLC | 8 |
4 |
| Metal Tool Inc. | 10 |
4 |
| Schlumberger Technology Corporation | 10673 |
3 |
| Baker Hughes Incorporated | 5273 |
3 |
| Illinois Tool Works Inc. | 11454 |
3 |
| Auger Torque Europe Limited | 15 |
3 |
| Berkel & Company Contractors, Inc. | 4 |
3 |
| Digga Australia Pty. Ltd. | 21 |
3 |
| Soil Analytics, LLC | 4 |
3 |
| Tercel IP Limited | 37 |
3 |
| Vermeer Manufacturing Company | 634 |
3 |
| Sub-mergent Technologies, Inc. | 11 |
3 |
| Other owners | 88 |