- 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 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
Patent holdings for IPC class E21B 34/14
Total number of patents in this class: 2632
10-year publication summary
|
250
|
272
|
204
|
173
|
216
|
196
|
223
|
258
|
208
|
66
|
| 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 |
479 |
| Schlumberger Technology Corporation | 9690 |
143 |
| Weatherford Technology Holdings, LLC | 2135 |
137 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
135 |
| Baker Hughes Incorporated | 5689 |
123 |
| Saudi Arabian Oil Company | 11322 |
82 |
| Baker Hughes, a GE Company, LLC | 2171 |
68 |
| NCS Multistage Inc. | 172 |
66 |
| Packers Plus Energy Services Inc. | 120 |
57 |
| Baker Hughes Holdings LLC | 3060 |
55 |
| Schlumberger Canada Limited | 6913 |
54 |
| Schlumberger Technology B.v. | 4951 |
46 |
| Services Petroliers Schlumberger | 5426 |
46 |
| SC Asset Corporation | 48 |
33 |
| Innovex Downhole Solutions, Inc. | 182 |
30 |
| Cameron International Corporation | 1305 |
22 |
| Kobold Corp. | 42 |
22 |
| Thru Tubing Solutions, Inc. | 361 |
20 |
| Aramco Services Company | 3504 |
19 |
| Weatherford / Lamb, Inc. | 158 |
19 |
| Other owners | 976 |