- 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: 2288
10-year publication summary
|
140
|
138
|
155
|
135
|
110
|
104
|
114
|
103
|
75
|
78
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21078 |
357 |
| Schlumberger Technology Corporation | 11054 |
129 |
| Saudi Arabian Oil Company | 13656 |
126 |
| Weatherford Technology Holdings, LLC | 2033 |
124 |
| Baker Hughes Incorporated | 5175 |
95 |
| Schlumberger Canada Limited | 7432 |
91 |
| Baker Hughes Oilfield Operations, LLC | 2390 |
85 |
| Shell Internationale Research Maatschappij B.V. | 3545 |
81 |
| Services Petroliers Schlumberger | 5884 |
77 |
| Schlumberger Technology B.v. | 5223 |
75 |
| Baker Hughes, a GE Company, LLC | 2106 |
54 |
| Shell Oil Company | 2133 |
41 |
| Enventure Global Technology, L.L.C. | 84 |
40 |
| Aramco Services Company | 4095 |
37 |
| Halliburton Manufacturing and Services Limited | 58 |
33 |
| Welltec AS | 300 |
31 |
| Schlumberger Holdings Limited | 2790 |
30 |
| Prad Research and Development Limited | 2687 |
30 |
| Baker Hughes Holdings LLC | 3002 |
30 |
| Cameron International Corporation | 1353 |
24 |
| Other owners | 698 |