- 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 33/13 - Methods or devices for cementing, for plugging holes, crevices or the like
Patent holdings for IPC class E21B 33/13
Total number of patents in this class: 2584
10-year publication summary
|
209
|
222
|
172
|
152
|
146
|
170
|
123
|
87
|
77
|
70
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
677 |
| Schlumberger Technology Corporation | 10914 |
153 |
| Saudi Arabian Oil Company | 13428 |
135 |
| Schlumberger Canada Limited | 7373 |
104 |
| Schlumberger Technology B.v. | 5189 |
88 |
| Services Petroliers Schlumberger | 5835 |
87 |
| Thru Tubing Solutions, Inc. | 379 |
73 |
| ConocoPhillips Company | 1683 |
56 |
| Baker Hughes Incorporated | 5243 |
52 |
| Schlumberger Holdings Limited | 2800 |
44 |
| Baker Hughes Holdings LLC | 2999 |
43 |
| Prad Research and Development Limited | 2690 |
41 |
| Weatherford Technology Holdings, LLC | 2033 |
36 |
| Bisn Tec Ltd | 80 |
36 |
| Hydra Systems AS | 37 |
28 |
| Baker Hughes Oilfield Operations, LLC | 2334 |
22 |
| Baker Hughes, a GE Company, LLC | 2109 |
22 |
| Aramco Services Company | 4039 |
21 |
| ExxonMobil Upstream Research Company | 2390 |
17 |
| Statoil Petroleum AS | 524 |
17 |
| Other owners | 832 |