- 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 17/00 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patent holdings for IPC class E21B 17/00
Total number of patents in this class: 2488
10-year publication summary
|
365
|
355
|
224
|
176
|
146
|
128
|
112
|
71
|
64
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20403 |
476 |
| Schlumberger Technology Corporation | 10217 |
131 |
| Baker Hughes Incorporated | 5514 |
124 |
| Schlumberger Canada Limited | 7137 |
114 |
| Services Petroliers Schlumberger | 5616 |
106 |
| Schlumberger Technology B.v. | 5058 |
105 |
| Baker Hughes, a GE Company, LLC | 2138 |
74 |
| Saudi Arabian Oil Company | 12390 |
50 |
| Schlumberger Holdings Limited | 2870 |
39 |
| Evolution Engineering Inc. | 311 |
38 |
| Prad Research and Development Limited | 2696 |
36 |
| National Oilwell Varco, L.P. | 1624 |
33 |
| Weatherford Technology Holdings, LLC | 2107 |
30 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
30 |
| Baker Hughes Holdings LLC | 3013 |
28 |
| Thru Tubing Solutions, Inc. | 364 |
20 |
| Chevron U.S.A. Inc. | 3844 |
18 |
| Nextstream Wired Pipe, LLC | 36 |
18 |
| Landmark Graphics Corporation | 1521 |
17 |
| Smith International, Inc. | 741 |
17 |
| Other owners | 984 |