- 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 17/10 - Wear protectors; Centralising devices
Patent holdings for IPC class E21B 17/10
Total number of patents in this class: 2366
10-year publication summary
|
234
|
262
|
193
|
201
|
223
|
229
|
212
|
179
|
140
|
32
|
| 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 |
301 |
| Saudi Arabian Oil Company | 11322 |
124 |
| Schlumberger Technology Corporation | 9690 |
113 |
| Weatherford Technology Holdings, LLC | 2135 |
58 |
| Baker Hughes Incorporated | 5689 |
49 |
| Schlumberger Canada Limited | 6913 |
46 |
| Schlumberger Technology B.v. | 4951 |
42 |
| Services Petroliers Schlumberger | 5426 |
42 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
35 |
| Innovex Downhole Solutions, Inc. | 182 |
34 |
| Baker Hughes, a GE Company, LLC | 2171 |
33 |
| Baker Hughes Holdings LLC | 3060 |
31 |
| Aramco Services Company | 3504 |
26 |
| National Oilwell Varco, L.P. | 1604 |
26 |
| Evolution Engineering Inc. | 313 |
25 |
| Petromac IP Limited | 30 |
24 |
| Schlumberger Holdings Limited | 2947 |
23 |
| Frank's International, LLC | 241 |
22 |
| Prad Research and Development Limited | 2696 |
18 |
| Impact Selector International, LLC | 117 |
17 |
| Other owners | 1277 |