- 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: 2519
10-year publication summary
|
299
|
194
|
154
|
129
|
117
|
98
|
67
|
67
|
65
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21117 |
486 |
| Schlumberger Technology Corporation | 11238 |
135 |
| Baker Hughes Incorporated | 5140 |
123 |
| Schlumberger Canada Limited | 7485 |
110 |
| Services Petroliers Schlumberger | 5916 |
104 |
| Schlumberger Technology B.v. | 5239 |
103 |
| Baker Hughes, a GE Company, LLC | 2101 |
74 |
| Saudi Arabian Oil Company | 13814 |
57 |
| Evolution Engineering Inc. | 300 |
38 |
| National Oilwell Varco, L.P. | 1701 |
38 |
| Schlumberger Holdings Limited | 2757 |
36 |
| Prad Research and Development Limited | 2686 |
36 |
| Baker Hughes Oilfield Operations, LLC | 2402 |
33 |
| Weatherford Technology Holdings, LLC | 2033 |
28 |
| Baker Hughes Holdings LLC | 2991 |
27 |
| Thru Tubing Solutions, Inc. | 382 |
20 |
| Chevron U.S.A. Inc. | 4044 |
19 |
| Vallourec Oil and Gas France | 455 |
19 |
| Nextstream Wired Pipe, LLC | 36 |
18 |
| Landmark Graphics Corporation | 1510 |
17 |
| Other owners | 998 |