- 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 43/263 - Methods for stimulating production by forming crevices or fractures using explosives
Patent holdings for IPC class E21B 43/263
Total number of patents in this class: 307
10-year publication summary
|
23
|
26
|
32
|
38
|
18
|
26
|
24
|
9
|
10
|
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. | 20438 |
45 |
| Schlumberger Technology Corporation | 10263 |
16 |
| Geodynamics, Inc. | 198 |
13 |
| Saudi Arabian Oil Company | 12446 |
11 |
| Schlumberger Canada Limited | 7154 |
10 |
| Triad National Security, LLC | 592 |
10 |
| Schlumberger Technology B.v. | 5075 |
9 |
| Services Petroliers Schlumberger | 5633 |
9 |
| Northrop Grumman Systems Corporation | 2921 |
8 |
| Baker Hughes Incorporated | 5504 |
7 |
| Twin Disc, Inc. | 98 |
7 |
| Schlumberger Holdings Limited | 2867 |
6 |
| ExxonMobil Upstream Research Company | 2454 |
6 |
| Hunting Titan, Inc. | 247 |
6 |
| Thru Tubing Solutions, Inc. | 365 |
6 |
| Owen Oil Tools LP | 95 |
5 |
| Tong Oil Tools Co., Ltd. | 19 |
5 |
| China University of Mining and Technology | 1225 |
4 |
| Dyno Nobel Inc. | 165 |
4 |
| Prad Research and Development Limited | 2696 |
4 |
| Other owners | 116 |