- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 12/06 - Mechanical cleaning devices
Patent holdings for IPC class E21B 12/06
Total number of patents in this class: 66
10-year publication summary
|
12
|
4
|
6
|
5
|
5
|
9
|
1
|
7
|
6
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
11 |
| National Oilwell Varco, L.P. | 1604 |
4 |
| Schlumberger Technology Corporation | 9690 |
3 |
| Frank's International, LLC | 241 |
3 |
| I3-edge Ltd. | 3 |
3 |
| Baker Hughes Incorporated | 5689 |
2 |
| Bauer Maschinen GmbH | 210 |
2 |
| PDI, Inc. | 3 |
2 |
| Sandvik Mining and Construction Oy | 703 |
2 |
| Soilmec S.p.A. | 78 |
2 |
| Tri-State Environmental, LLC | 16 |
2 |
| Epiroc Rock Drills Aktiebolag | 405 |
2 |
| Samil Engineering & Construction Co.,Ltd | 25 |
2 |
| Schlumberger Canada Limited | 6913 |
1 |
| Schlumberger Technology B.v. | 4951 |
1 |
| Schlumberger Holdings Limited | 2947 |
1 |
| Landmark Graphics Corporation | 1526 |
1 |
| Caterpillar Inc. | 8877 |
1 |
| ANDREAS STIHL AG & Co. KG | 818 |
1 |
| Atlas Copco Bhmt | 1 |
1 |
| Other owners | 19 |