- 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 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: 2227
10-year publication summary
|
180
|
162
|
158
|
179
|
160
|
135
|
122
|
144
|
102
|
22
|
| 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 |
326 |
| Weatherford Technology Holdings, LLC | 2135 |
130 |
| Schlumberger Technology Corporation | 9690 |
119 |
| Saudi Arabian Oil Company | 11322 |
116 |
| Baker Hughes Incorporated | 5689 |
115 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
90 |
| Schlumberger Canada Limited | 6913 |
89 |
| Services Petroliers Schlumberger | 5426 |
78 |
| Schlumberger Technology B.v. | 4951 |
76 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
67 |
| Baker Hughes, a GE Company, LLC | 2171 |
54 |
| Enventure Global Technology, L.L.C. | 113 |
43 |
| Shell Oil Company | 2196 |
42 |
| Baker Hughes Holdings LLC | 3060 |
35 |
| Aramco Services Company | 3504 |
33 |
| Halliburton Manufacturing and Services Limited | 63 |
33 |
| Welltec Oilfield Solutions AG | 140 |
33 |
| Schlumberger Holdings Limited | 2947 |
32 |
| Prad Research and Development Limited | 2696 |
30 |
| Welltec AS | 301 |
30 |
| Other owners | 656 |