- 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 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: 415
10-year publication summary
|
57
|
49
|
28
|
33
|
29
|
22
|
20
|
27
|
23
|
4
|
| 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 |
81 |
| Baker Hughes Incorporated | 5689 |
26 |
| Saudi Arabian Oil Company | 11322 |
26 |
| Schlumberger Technology Corporation | 9690 |
16 |
| Weatherford Technology Holdings, LLC | 2135 |
16 |
| Schlumberger Canada Limited | 6913 |
14 |
| ConocoPhillips Company | 1657 |
12 |
| Schlumberger Technology B.v. | 4951 |
11 |
| Services Petroliers Schlumberger | 5426 |
11 |
| Aramco Services Company | 3504 |
8 |
| Baker Hughes, a GE Company, LLC | 2171 |
7 |
| Schlumberger Holdings Limited | 2947 |
6 |
| Cameron International Corporation | 1305 |
6 |
| Proppant Express Solutions, LLC | 30 |
6 |
| Advanced Upstream Ltd. | 35 |
6 |
| ExxonMobil Upstream Research Company | 2525 |
5 |
| Prad Research and Development Limited | 2696 |
5 |
| Kureha Corporation | 1026 |
4 |
| DYNAenergetics Europe GmbH | 205 |
4 |
| Armor Tools International Inc. | 14 |
3 |
| Other owners | 142 |