- 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 17/07 - Telescoping joints for varying drill string lengths; Shock absorbers
Patent holdings for IPC class E21B 17/07
Total number of patents in this class: 647
10-year publication summary
|
61
|
56
|
49
|
29
|
26
|
65
|
43
|
36
|
37
|
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 |
81 |
| Schlumberger Technology Corporation | 10217 |
34 |
| Baker Hughes Incorporated | 5514 |
18 |
| Schlumberger Canada Limited | 7137 |
16 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
16 |
| Schlumberger Technology B.v. | 5058 |
15 |
| Weatherford Technology Holdings, LLC | 2107 |
15 |
| Services Petroliers Schlumberger | 5616 |
15 |
| Sandvik Intellectual Property AB | 1546 |
14 |
| Bauer Maschinen GmbH | 219 |
12 |
| Lord Corporation | 479 |
11 |
| Grant Prideco, Inc. | 404 |
9 |
| National Oilwell Varco, L.P. | 1624 |
9 |
| Scientific Drilling International, Inc. | 164 |
9 |
| Baker Hughes, a GE Company, LLC | 2138 |
9 |
| Schlumberger Holdings Limited | 2870 |
8 |
| Prad Research and Development Limited | 2696 |
8 |
| Saudi Arabian Oil Company | 12390 |
8 |
| Ashmin Holding LLC | 18 |
7 |
| Cameron International Corporation | 1322 |
7 |
| Other owners | 326 |