- 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 44/08 - Automatic control of the tool feed in response to the amplitude of the movement of the percussion tool, e.g. jump or recoil
Patent holdings for IPC class E21B 44/08
Total number of patents in this class: 33
10-year publication summary
|
0
|
2
|
4
|
8
|
2
|
2
|
6
|
3
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Helmerich & Payne Technologies, LLC | 101 |
4 |
| ConocoPhillips Company | 1676 |
3 |
| Schlumberger Technology Corporation | 10627 |
2 |
| Halliburton Energy Services, Inc. | 20749 |
2 |
| Landmark Graphics Corporation | 1522 |
2 |
| Mhwirth AS | 129 |
2 |
| Nabors Drilling Technologies USA, Inc. | 555 |
2 |
| Saudi Arabian Oil Company | 12858 |
2 |
| National Technology & Engineering Solutions of Sandia, LLC | 1891 |
2 |
| Baker Hughes Incorporated | 5289 |
1 |
| Massachusetts Institute of Technology | 10013 |
1 |
| Aramco Services Company | 3910 |
1 |
| Bauer Maschinen GmbH | 217 |
1 |
| Intellicess Inc. | 10 |
1 |
| Sandvik Mining and Construction Oy | 811 |
1 |
| Xact Downhole Telemetry Inc. | 11 |
1 |
| Baker Hughes, a GE Company, LLC | 2115 |
1 |
| Exebenus AS | 12 |
1 |
| A&O Technologies LLC | 6 |
1 |
| Epiroc Rock Drills Aktiebolag | 504 |
1 |
| Other owners | 1 |