- 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: 773
10-year publication summary
|
101
|
101
|
103
|
95
|
66
|
63
|
68
|
42
|
28
|
10
|
| 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 |
101 |
| Schlumberger Technology Corporation | 9690 |
46 |
| Schlumberger Canada Limited | 6913 |
31 |
| Saudi Arabian Oil Company | 11322 |
28 |
| Baker Hughes Holdings LLC | 3060 |
26 |
| Schlumberger Technology B.v. | 4951 |
23 |
| Services Petroliers Schlumberger | 5426 |
23 |
| Schlumberger Holdings Limited | 2947 |
20 |
| Baker Hughes, a GE Company, LLC | 2171 |
20 |
| Baker Hughes Incorporated | 5689 |
15 |
| Prad Research and Development Limited | 2696 |
15 |
| Thru Tubing Solutions, Inc. | 361 |
15 |
| Aramco Services Company | 3504 |
9 |
| National Oilwell Varco Denmark I/S | 135 |
8 |
| Athabasca Oil Corporation | 21 |
7 |
| National Oilwell Varco, L.P. | 1604 |
7 |
| Technip France | 737 |
7 |
| Ziebel AS | 28 |
7 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
7 |
| Advanced Composite Products & Technology, Inc. | 11 |
6 |
| Other owners | 352 |