- 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 17/20 - Flexible or articulated drilling pipes
Patent holdings for IPC class E21B 17/20
Total number of patents in this class: 784
10-year publication summary
|
101
|
103
|
95
|
66
|
63
|
68
|
44
|
33
|
33
|
0
|
| 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 |
102 |
| Schlumberger Technology Corporation | 10217 |
49 |
| Schlumberger Canada Limited | 7137 |
30 |
| Saudi Arabian Oil Company | 12390 |
29 |
| Baker Hughes Holdings LLC | 3013 |
26 |
| Schlumberger Technology B.v. | 5058 |
22 |
| Services Petroliers Schlumberger | 5616 |
22 |
| Baker Hughes, a GE Company, LLC | 2138 |
20 |
| Schlumberger Holdings Limited | 2870 |
19 |
| Baker Hughes Incorporated | 5514 |
15 |
| Prad Research and Development Limited | 2696 |
15 |
| Thru Tubing Solutions, Inc. | 364 |
15 |
| Aramco Services Company | 3735 |
10 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
9 |
| National Oilwell Varco Denmark I/S | 133 |
8 |
| National Oilwell Varco, L.P. | 1624 |
8 |
| Athabasca Oil Corporation | 21 |
7 |
| Technip France | 717 |
7 |
| Ziebel AS | 28 |
7 |
| Advanced Composite Products & Technology, Inc. | 7 |
6 |
| Other owners | 358 |