- 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 33/10 - Sealing or packing boreholes or wells in the borehole
Patent holdings for IPC class E21B 33/10
Total number of patents in this class: 430
10-year publication summary
|
28
|
33
|
29
|
22
|
24
|
28
|
24
|
20
|
13
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21284 |
87 |
| Saudi Arabian Oil Company | 14349 |
27 |
| Baker Hughes Incorporated | 4897 |
23 |
| Schlumberger Technology Corporation | 11924 |
18 |
| Schlumberger Canada Limited | 7621 |
14 |
| Weatherford Technology Holdings, LLC | 2165 |
14 |
| Schlumberger Technology B.v. | 5299 |
11 |
| ConocoPhillips Company | 1716 |
11 |
| Services Petroliers Schlumberger | 6033 |
11 |
| Aramco Services Company | 4192 |
8 |
| Baker Hughes Oilfield Operations, LLC | 2556 |
8 |
| Baker Hughes, a GE Company, LLC | 2048 |
7 |
| Schlumberger Holdings Limited | 2675 |
6 |
| Cameron International Corporation | 1367 |
6 |
| Proppant Express Solutions, LLC | 34 |
6 |
| ExxonMobil Upstream Research Company | 2288 |
5 |
| Kureha Corporation | 1072 |
5 |
| Prad Research and Development Limited | 2649 |
5 |
| ExxonMobil Technology and Engineering Company | 1387 |
5 |
| Eavor Technologies Inc. | 110 |
4 |
| Other owners | 149 |