- 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 33/14 - Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
Patent holdings for IPC class E21B 33/14
Total number of patents in this class: 1822
10-year publication summary
|
207
|
233
|
159
|
147
|
144
|
138
|
115
|
116
|
88
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21242 |
498 |
| Saudi Arabian Oil Company | 13949 |
203 |
| Schlumberger Technology Corporation | 11549 |
131 |
| Weatherford Technology Holdings, LLC | 2074 |
85 |
| Schlumberger Canada Limited | 7571 |
56 |
| Schlumberger Technology B.v. | 5270 |
44 |
| Services Petroliers Schlumberger | 5981 |
43 |
| Baker Hughes Oilfield Operations, LLC | 2472 |
29 |
| Aramco Services Company | 4162 |
28 |
| Baker Hughes Holdings LLC | 2994 |
21 |
| Hydra Systems AS | 48 |
19 |
| Cameron International Corporation | 1368 |
16 |
| Schlumberger Holdings Limited | 2730 |
15 |
| ConocoPhillips Company | 1696 |
15 |
| Baker Hughes Incorporated | 5033 |
14 |
| Prad Research and Development Limited | 2679 |
14 |
| Expro North Sea Limited | 237 |
12 |
| Thru Tubing Solutions, Inc. | 402 |
12 |
| Packers Plus Energy Services Inc. | 119 |
11 |
| Baker Hughes, a GE Company, LLC | 2092 |
9 |
| Other owners | 547 |