- 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 43/116 - Gun or shaped-charge perforators
Patent holdings for IPC class E21B 43/116
Total number of patents in this class: 907
10-year publication summary
|
57
|
65
|
50
|
59
|
59
|
69
|
52
|
31
|
52
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21020 |
202 |
| Schlumberger Technology Corporation | 10957 |
65 |
| Hunting Titan, Inc. | 247 |
54 |
| Schlumberger Canada Limited | 7403 |
35 |
| Geodynamics, Inc. | 195 |
34 |
| DYNAenergetics Europe GmbH | 255 |
31 |
| Schlumberger Technology B.v. | 5203 |
26 |
| Services Petroliers Schlumberger | 5852 |
26 |
| Wells Fargo Bank, National Association | 4020 |
25 |
| Baker Hughes Incorporated | 5233 |
23 |
| Baker Hughes Holdings LLC | 3010 |
19 |
| Dorf Ketal Chemicals FZE | 198 |
18 |
| ExxonMobil Upstream Research Company | 2386 |
17 |
| Schlumberger Holdings Limited | 2796 |
16 |
| Prad Research and Development Limited | 2688 |
16 |
| Saudi Arabian Oil Company | 13512 |
14 |
| Harrison Jet Guns II, L.P., Harrison Jet Guns Management Company, L.L.C., a Texas Limited Liability Company | 25 |
13 |
| Owen Oil Tools LP | 87 |
13 |
| XConnect, LLC | 54 |
13 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 71 |
12 |
| Other owners | 235 |