- 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 44/02 - Automatic control of the tool feed
Patent holdings for IPC class E21B 44/02
Total number of patents in this class: 1000
10-year publication summary
|
33
|
46
|
50
|
60
|
99
|
84
|
73
|
84
|
70
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21320 |
150 |
| Schlumberger Technology Corporation | 11798 |
133 |
| Schlumberger Canada Limited | 7606 |
94 |
| Services Petroliers Schlumberger | 6024 |
77 |
| Schlumberger Technology B.v. | 5298 |
51 |
| Landmark Graphics Corporation | 1508 |
49 |
| Saudi Arabian Oil Company | 14207 |
27 |
| Geoquest Systems B.V. | 871 |
26 |
| Motive Drilling Technologies, Inc. | 104 |
25 |
| Nabors Drilling Technologies USA, Inc. | 573 |
24 |
| Baker Hughes Oilfield Operations, LLC | 2521 |
18 |
| Technological Resources Pty. Limited | 443 |
14 |
| Baker Hughes, a GE Company, LLC | 2057 |
14 |
| National Oilwell Varco, L.P. | 1698 |
13 |
| Pason Systems Corp. | 86 |
11 |
| Sandvik Mining and Construction Oy | 886 |
11 |
| Vermeer Manufacturing Company | 671 |
10 |
| Baker Hughes Incorporated | 4940 |
9 |
| Caterpillar Global Mining Equipment LLC | 179 |
8 |
| ExxonMobil Upstream Research Company | 2306 |
8 |
| Other owners | 228 |