- 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 43/10 - Setting of casings, screens or liners in wells
Patent holdings for IPC class E21B 43/10
Total number of patents in this class: 2269
10-year publication summary
|
162
|
158
|
179
|
160
|
135
|
123
|
147
|
119
|
78
|
40
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20749 |
347 |
| Schlumberger Technology Corporation | 10627 |
129 |
| Saudi Arabian Oil Company | 12858 |
124 |
| Weatherford Technology Holdings, LLC | 2014 |
120 |
| Baker Hughes Incorporated | 5289 |
98 |
| Schlumberger Canada Limited | 7235 |
91 |
| Shell Internationale Research Maatschappij B.V. | 3544 |
86 |
| Baker Hughes Oilfield Operations, LLC | 2269 |
81 |
| Services Petroliers Schlumberger | 5756 |
77 |
| Schlumberger Technology B.v. | 5148 |
75 |
| Baker Hughes, a GE Company, LLC | 2115 |
54 |
| Enventure Global Technology, L.L.C. | 93 |
41 |
| Shell Oil Company | 2141 |
41 |
| Aramco Services Company | 3910 |
36 |
| Halliburton Manufacturing and Services Limited | 58 |
33 |
| Baker Hughes Holdings LLC | 3007 |
32 |
| Welltec AS | 297 |
31 |
| Schlumberger Holdings Limited | 2841 |
30 |
| Prad Research and Development Limited | 2694 |
30 |
| Cameron International Corporation | 1329 |
23 |
| Other owners | 690 |