- 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 17/00 - Drilling rods or pipesFlexible drill stringsKelliesDrill collarsSucker rodsCasingsTubings
Patent holdings for IPC class E21B 17/00
Total number of patents in this class: 2493
10-year publication summary
|
311
|
299
|
194
|
154
|
129
|
117
|
98
|
66
|
66
|
51
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20964 |
483 |
| Schlumberger Technology Corporation | 10898 |
134 |
| Baker Hughes Incorporated | 5246 |
123 |
| Schlumberger Canada Limited | 7369 |
110 |
| Services Petroliers Schlumberger | 5830 |
104 |
| Schlumberger Technology B.v. | 5184 |
103 |
| Baker Hughes, a GE Company, LLC | 2109 |
74 |
| Saudi Arabian Oil Company | 13409 |
55 |
| Evolution Engineering Inc. | 301 |
38 |
| National Oilwell Varco, L.P. | 1689 |
37 |
| Schlumberger Holdings Limited | 2800 |
36 |
| Prad Research and Development Limited | 2691 |
36 |
| Baker Hughes Oilfield Operations, LLC | 2331 |
33 |
| Weatherford Technology Holdings, LLC | 2028 |
29 |
| Baker Hughes Holdings LLC | 2999 |
27 |
| Thru Tubing Solutions, Inc. | 379 |
20 |
| Chevron U.S.A. Inc. | 3996 |
19 |
| Vallourec Oil and Gas France | 454 |
18 |
| Nextstream Wired Pipe, LLC | 36 |
18 |
| Landmark Graphics Corporation | 1524 |
17 |
| Other owners | 979 |