- 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 17/02 - CouplingsJoints
Patent holdings for IPC class E21B 17/02
Total number of patents in this class: 2757
10-year publication summary
|
196
|
188
|
163
|
152
|
200
|
212
|
166
|
154
|
151
|
63
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21293 |
525 |
| Schlumberger Technology Corporation | 11730 |
208 |
| Schlumberger Canada Limited | 7602 |
115 |
| Schlumberger Technology B.v. | 5297 |
110 |
| Services Petroliers Schlumberger | 6020 |
110 |
| Baker Hughes Oilfield Operations, LLC | 2524 |
86 |
| Baker Hughes Incorporated | 4952 |
75 |
| Baker Hughes, a GE Company, LLC | 2105 |
58 |
| Saudi Arabian Oil Company | 14135 |
57 |
| Weatherford Technology Holdings, LLC | 2151 |
50 |
| Prad Research and Development Limited | 2667 |
35 |
| Schlumberger Holdings Limited | 2708 |
34 |
| Cameron International Corporation | 1366 |
32 |
| Evolution Engineering Inc. | 301 |
32 |
| Baker Hughes Holdings LLC | 2990 |
31 |
| Nextstream Wired Pipe, LLC | 36 |
22 |
| IntelliServ, LLC | 76 |
18 |
| Think and Vision GmbH | 30 |
18 |
| National Oilwell Varco, L.P. | 1699 |
17 |
| S+s Industries Technology LLC | 24 |
17 |
| Other owners | 1107 |