- 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 37/00 - Methods or apparatus for cleaning boreholes or wells
Patent holdings for IPC class E21B 37/00
Total number of patents in this class: 1034
10-year publication summary
|
90
|
101
|
115
|
101
|
89
|
82
|
92
|
74
|
47
|
10
|
| 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 |
132 |
| Saudi Arabian Oil Company | 11322 |
95 |
| Baker Hughes Incorporated | 5689 |
43 |
| Baker Hughes Holdings LLC | 3060 |
35 |
| Schlumberger Technology Corporation | 9690 |
33 |
| ConocoPhillips Company | 1657 |
24 |
| Baker Hughes, a GE Company, LLC | 2171 |
22 |
| Schlumberger Canada Limited | 6913 |
19 |
| Services Petroliers Schlumberger | 5426 |
18 |
| Schlumberger Technology B.v. | 4951 |
17 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
17 |
| Hydra Systems AS | 38 |
16 |
| Aramco Services Company | 3504 |
15 |
| M-I L.L.C. | 893 |
15 |
| Weatherford Technology Holdings, LLC | 2135 |
14 |
| Odfjell Well Services Norway AS | 18 |
14 |
| Altus Intervention (technologies) AS | 60 |
14 |
| Schlumberger Holdings Limited | 2947 |
13 |
| Petroleo Brasileiro S.A. - Petrobras | 730 |
13 |
| Prad Research and Development Limited | 2696 |
11 |
| Other owners | 454 |